Frequently Asked Questions

What is an Air Handling Unit (AHU)?

An Air Handling Unit (AHU) is the central ventilation system responsible for conditioning and distributing air throughout a building. By controlling airflow, temperature, humidity and filtration, an AHU creates comfortable, healthy and energy-efficient indoor environments.

AHUs are commonly found in commercial offices, hospitals, schools, universities, hotels, manufacturing facilities and data centres where maintaining indoor air quality and environmental stability is critical. Every AHU is different, requiring a control strategy tailored to the building's specific operational requirements.

At iACS, we specialise in intelligent AHU control solutions that maximise performance, simplify operation and provide complete visibility of your ventilation system.

Why is AHU control important?

The control system is the intelligence behind every Air Handling Unit. While the mechanical components move air and condition the environment, it is the control strategy that determines how efficiently and effectively the system operates.

A well-designed control system continuously monitors temperatures, pressures, humidity, airflow and occupancy, making automatic adjustments to maintain comfort while reducing unnecessary energy consumption.

Poorly designed controls can lead to unstable temperatures, excessive energy use, equipment wear and increased maintenance costs. iACS develops bespoke AHU control strategies that optimise performance while ensuring every component operates together efficiently.

Can iACS control any AHU manufacturer?

Yes. Our control solutions are designed to be manufacturer independent.

Whether your Air Handling Unit is new or existing, our engineers can develop a control strategy suitable for virtually any AHU manufacturer or bespoke ventilation system. We regularly work with OEM manufacturers, mechanical contractors, consulting engineers and end users across a wide variety of applications.

Because every project is engineered individually, our systems can be tailored to match the specific components, sensors and equipment installed within your AHU.

Do your AHU controls integrate with Building Management Systems (BMS)?

Yes. Integration is a key part of every iACS control solution.

Our platforms support industry-standard communication protocols including Modbus and BACnet, allowing seamless communication with Building Management Systems and third-party platforms.

This enables facilities managers to monitor alarms, adjust operating parameters, review trends and manage multiple ventilation systems from a single interface while maintaining complete operational visibility.

Can existing AHUs be upgraded without replacing the whole system?

Absolutely! Many Air Handling Units remain mechanically sound for decades but rely on outdated control systems that lack modern functionality. Our retrofit solutions allow existing AHUs to be upgraded with intelligent controls, cloud connectivity, browser-based interfaces and improved energy optimisation without replacing the entire unit.

This provides a cost-effective way of extending equipment life while significantly improving performance, reliability and usability.

Do your AHU controls support EC fan technology?

Yes! Modern EC fan technology offers significant energy savings compared with traditional fan systems, and our control strategies are specifically developed to maximise these benefits.

We support variable speed fan control, pressure optimisation, airflow management and intelligent demand-based operation to deliver efficient ventilation whilst reducing electrical consumption and equipment wear.

Can your controls manage humidity as well as temperature?

Yes! Many ventilation applications require more than simple temperature control. Our systems can manage humidification, dehumidification and overall indoor air quality alongside traditional heating and cooling functions.

This is particularly important within healthcare facilities, laboratories, clean environments and specialist manufacturing applications where maintaining stable humidity levels is essential for both occupant wellbeing and operational performance.

How do your controls improve energy efficiency?

Energy efficiency is built into every control strategy we develop.

Our systems continuously optimise fan speeds, heating and cooling demand, heat recovery operation, occupancy schedules and environmental conditions to minimise unnecessary energy consumption.

Rather than operating equipment at fixed outputs, intelligent control allows every component to respond dynamically to the building's actual requirements, helping reduce running costs while maintaining occupant comfort.

Can Air Handling Units be monitored remotely?

Yes! Our latest control platforms provide secure remote monitoring through browser-based interfaces and cloud connectivity, allowing authorised users to access live operating data from virtually anywhere.

Facilities managers can review alarms, monitor temperatures, analyse trends and make operational adjustments without needing to visit site, improving response times and reducing maintenance costs.

What is a Heat Recovery Unit (HRU)?

A Heat Recovery Unit (HRU) is a ventilation system designed to recover heat from stale extract air and transfer it to incoming fresh air before it enters the building. This process significantly reduces the amount of energy required to heat or cool incoming air, improving overall building efficiency.

Heat Recovery Units are commonly installed in commercial buildings, schools, healthcare facilities, residential developments, hotels and manufacturing environments where fresh air ventilation is required without compromising energy performance.

At iACS, we develop intelligent control strategies that maximise the efficiency of heat recovery systems while maintaining indoor comfort and air quality.

How does a Heat Recovery Unit improve energy efficiency

Rather than exhausting conditioned air directly outside, a Heat Recovery Unit captures the thermal energy contained within the extract air and transfers it to the incoming fresh air supply.

This reduces the demand placed on heating and cooling systems, resulting in lower energy consumption, reduced operating costs and improved building sustainability.

Our control strategies continuously optimise fan operation, heat recovery efficiency and environmental conditions to ensure the unit only consumes the energy required to meet the building's current demand.

Can iACS control any Heat Recovery Unit manufacturer?

Yes! Our controls are manufacturer-independent and can be integrated with most commercial Heat Recovery Units, whether supplied as part of a new project or installed as an upgrade to an existing system.

We work alongside AHU manufacturers, consultants, contractors and end users to develop bespoke control strategies that suit the specific configuration and operational requirements of each installation.

What is the difference between an HRU and an MVHR system?

Both systems recover heat from extract air to improve energy efficiency, but they are typically used in different applications.

Mechanical Ventilation with Heat Recovery (MVHR) systems are commonly installed within residential and smaller commercial buildings, while Heat Recovery Units are generally larger, more configurable systems designed for commercial, healthcare, hospitality, educational and industrial environments.

Regardless of the application, iACS develops intelligent controls that optimise performance while ensuring reliable ventilation and energy-efficient operation.

Can Heat Recovery Units integrate with a Building Management System (BMS)?

Yes! Our Heat Recovery Unit controls support industry-standard communication protocols including Modbus and BACnet, allowing seamless integration with Building Management Systems.

This enables facilities teams to monitor system performance, review alarms, adjust operating schedules and access live operational data through a central management platform.

Can your Heat Recovery Unit controls be monitored remotely?

Absolutely! Our latest control platforms provide secure browser-based access and cloud connectivity, allowing authorised users to remotely monitor system status, temperatures, alarms and operating trends from virtually anywhere.

Remote access helps reduce maintenance visits, improves response times and provides greater visibility of building performance.

How do your controls optimise heat recovery performance?

Every Heat Recovery Unit operates differently depending on occupancy, weather conditions and building demand.

Our intelligent control strategies continuously adjust fan speeds, dampers, heating and cooling stages, frost protection and heat recovery operation to maximise efficiency while maintaining the required indoor conditions.

This ensures the heat recovery process is optimised throughout the year rather than operating at fixed settings.

Can existing Heat Recovery Units be upgraded?

Yes! Many older Heat Recovery Units remain mechanically reliable but are controlled by outdated systems that offer limited functionality and poor energy performance.

Our retrofit solutions replace obsolete controls with modern intelligent platforms, providing improved efficiency, enhanced monitoring, browser-based interfaces, cloud connectivity and easier maintenance without replacing the complete ventilation system.

What industries use your Heat Recovery Unit controls?

Our Heat Recovery Unit control solutions are installed across a wide variety of sectors, including commercial offices, healthcare facilities, educational buildings, hotels, leisure centres, residential developments, manufacturing sites and public buildings.

Each project is engineered around the specific operational requirements of the building to ensure reliable, efficient and compliant ventilation performance.

What is a Fan Coil Unit (FCU)?

A Fan Coil Unit (FCU) is a compact HVAC system designed to heat or cool individual rooms or zones within a building. It consists of a fan and one or more heating and cooling coils that work together to maintain comfortable indoor temperatures.

Unlike central ventilation systems, Fan Coil Units provide localised environmental control, making them ideal for hotels, apartments, offices, healthcare facilities, and educational buildings where different spaces require independent temperature control.

At iACS, we develop intelligent Fan Coil Unit control solutions that maximise occupant comfort while reducing energy consumption and simplifying building management.

What are the benefits of intelligent Fan Coil Unit controls?

An intelligent control system allows every Fan Coil Unit to respond dynamically to changing room conditions rather than operating at fixed outputs.

Our control strategies continuously manage fan speed, heating and cooling demand, occupancy status, and room temperature to deliver consistent comfort while reducing unnecessary energy usage.

The result is improved occupant satisfaction, lower operating costs, quieter operation, and greater visibility of HVAC performance throughout the building.

Can iACS control both 2-pipe and 4-pipe Fan Coil Units?

Yes.

Our Fan Coil Unit control platform supports both 2-pipe and 4-pipe applications, allowing flexibility across a wide range of HVAC installations.

Whether the system uses changeover valves, simultaneous heating and cooling, EC fans, or traditional fan arrangements, our software can be configured around the specific equipment installed within the building.

Do your controls support EC fan motors?

Yes.

Our solutions fully support modern EC fan technology, allowing variable speed control that delivers quieter operation, improved airflow regulation, and significantly lower energy consumption compared with traditional multi-speed fans.

EC fan control also provides smoother temperature regulation and improved occupant comfort.

Can occupancy sensors be integrated with the system?

Absolutely. Our Fan Coil Unit controls can integrate with occupancy sensors, key card systems, window contacts, and other room management devices.

When a room becomes unoccupied, the control system automatically adjusts operating mode to reduce unnecessary heating or cooling while ensuring the room can quickly return to comfortable conditions when required.

This feature is particularly valuable within hotels, serviced apartments, student accommodation, and commercial office environments.

Can Fan Coil Units communicate with a Building Management System?

Yes.

Our controls support open communication protocols including Modbus and BACnet, allowing Fan Coil Units to integrate seamlessly with Building Management Systems.

Facilities teams can monitor room temperatures, alarms, operating modes, occupancy status, and energy performance through a single central interface.

Can Fan Coil Units be monitored remotely?

Yes.

Through browser-based access and cloud connectivity, authorised users can remotely monitor operating conditions, review alarms, analyse trends, and make adjustments where required.

Remote visibility helps reduce maintenance response times while providing valuable insight into system performance across the entire building.

What types of buildings benefit from intelligent Fan Coil Unit controls?

Fan Coil Units are commonly installed in environments where individual room comfort is important.

Typical applications include:

• Hotels and hospitality
• Residential apartments
• Commercial offices
• Healthcare facilities
• Universities and student accommodation
• Leisure facilities
• Mixed-use developments

Each environment has different occupancy patterns and comfort requirements, which is why every iACS control strategy is tailored around the building's specific operational needs.

Can existing Fan Coil Unit systems be upgraded?

Yes.

Many older Fan Coil Unit installations operate using outdated thermostats and legacy control systems.

Our retrofit solutions replace these with intelligent controllers that provide improved comfort, browser-based monitoring, cloud connectivity, occupancy control, and modern BMS integration without replacing the existing Fan Coil Unit itself.

This allows building owners to modernise HVAC performance while minimising disruption and capital expenditure.

What is a smoke extract system?

A smoke extract system is a life safety ventilation system designed to remove smoke, heat, and toxic gases from a building during a fire. By extracting smoke from affected areas and protecting escape routes, these systems help improve visibility, reduce temperatures, and provide occupants and emergency services with safer conditions during evacuation.

Smoke extract systems are commonly installed in commercial buildings, apartment developments, shopping centres, healthcare facilities, car parks, and other multi-occupancy environments where smoke management is a critical part of the building's fire strategy.

Why are smoke extract systems important?

During a fire, smoke often presents a greater risk than the flames themselves. Dense smoke can quickly reduce visibility, limit evacuation routes, and expose occupants to harmful gases.

An intelligent smoke extract system helps control smoke movement throughout the building, maintaining clearer escape routes while supporting the overall fire strategy. Effective smoke management also assists emergency services by improving visibility and reducing heat build-up during firefighting operations.

What types of smoke ventilation systems can iACS support?

Our smoke extract control solutions support a wide variety of smoke ventilation applications, including:

• Smoke extract systems
• Stairwell pressurisation
• Corridor ventilation
• Car park ventilation
• Environmental ventilation
• Multi-zone smoke control
• Hybrid smoke and day-to-day ventilation systems

Every control strategy is tailored around the specific building layout, fire strategy, and operational requirements.

Can your smoke extract systems integrate with fire alarm systems?

Yes. Our smoke extract controls are designed to integrate seamlessly with fire alarm systems, enabling automatic operation during emergency conditions.

The control platform receives signals from the fire alarm system and coordinates fans, dampers, pressure systems, and associated equipment according to the approved cause-and-effect strategy, ensuring reliable and repeatable operation when it matters most.

Can smoke extract systems integrate with Building Management Systems (BMS)?

Yes. Our systems support industry-standard communication protocols including Modbus and BACnet, allowing Building Management Systems to monitor operational status, alarms, fan operation, damper positions, pressures, and other key system parameters.

This provides facilities managers with greater visibility while maintaining separation between life safety functions and routine building management.

Can smoke extract systems be monitored remotely?

Yes. Our intelligent control platforms support remote monitoring, allowing authorised users to view alarms, system status, operational trends, and equipment performance from a secure browser-based interface.

Remote diagnostics help maintenance teams identify issues quickly, improve response times, and reduce unnecessary site visits while maintaining confidence in system availability.

Can existing smoke extract systems be upgraded?

Absolutely. Many existing smoke ventilation systems rely on ageing control panels that offer limited diagnostics, outdated communication methods, and reduced operational visibility.

Our retrofit solutions allow existing smoke extract systems to be modernised with intelligent controls, improved monitoring, cloud connectivity, and enhanced integration while retaining much of the existing mechanical infrastructure where appropriate.

What buildings commonly require smoke extract systems?

Smoke extract systems are installed across a wide variety of commercial and residential buildings where smoke management forms part of the fire strategy.

Typical applications include:

• Commercial offices
• Apartment developments
• High-rise residential buildings
• Hospitals
• Shopping centres
• Hotels
• Educational facilities
• Multi-storey car parks
• Mixed-use developments

Every building has unique fire engineering requirements, which is why each control strategy is individually developed.

How are smoke extract systems commissioned?

Commissioning involves validating every aspect of the smoke control strategy before the building becomes operational.

Our engineers test fan operation, damper sequencing, pressure control, fire alarm integration, cause-and-effect logic, alarms, communications, and emergency operating modes to ensure the complete system performs exactly as intended under all operating conditions.

What is an HVAC controls retrofit?

An HVAC controls retrofit is the process of replacing or upgrading the control system of an existing HVAC installation without replacing the entire mechanical plant.

Rather than removing Air Handling Units, Heat Recovery Units, Fan Coil Units, or associated equipment that may still be mechanically sound, a retrofit focuses on modernising the intelligence behind the system. This typically includes replacing obsolete controllers, updating software, improving communications, adding remote monitoring, and optimising control strategies.

A controls retrofit allows building owners to significantly improve system performance while avoiding the cost and disruption of complete plant replacement.

Why should I retrofit my existing HVAC controls?

Many HVAC systems continue operating for 20–30 years or more, but their control systems often become outdated much sooner.

Legacy controls may suffer from poor energy efficiency, limited diagnostics, obsolete hardware, and little or no remote visibility.

Retrofitting allows you to benefit from modern intelligent controls, browser-based monitoring, cloud connectivity, improved BMS integration, and advanced energy optimisation while extending the operational life of your existing HVAC equipment.

Can my existing Air Handling Unit be upgraded instead of replaced?

Yes. In many cases the Air Handling Unit itself remains mechanically reliable, making a controls retrofit the most cost-effective solution.

By replacing the legacy control panel and software with an intelligent iACS platform, the AHU can continue operating while benefiting from modern functionality, improved energy performance, and greater operational visibility.

Our engineers assess each project individually to determine the most appropriate upgrade strategy.

What are the benefits of retrofitting HVAC controls?

Retrofitting offers a wide range of operational and financial benefits, including:

• Reduced capital expenditure compared with full replacement
• Improved energy efficiency
• Modern browser-based interfaces
• Remote monitoring and diagnostics
• Enhanced Building Management System integration
• Improved reliability
• Easier maintenance
• Extended equipment lifespan
• Future-ready communication protocols

The result is a more intelligent HVAC system without replacing equipment that is still mechanically fit for purpose.

Can retrofit controls integrate with my existing Building Management System?

Absolutely. Our retrofit solutions support industry-standard communication protocols including Modbus and BACnet, allowing older HVAC systems to integrate with existing or upgraded Building Management Systems.

This provides facilities teams with improved visibility, alarm monitoring, trend analysis, and centralised control while maintaining compatibility with wider building infrastructure.

Will a retrofit reduce disruption compared with replacing the whole system?

Yes. One of the biggest advantages of a controls retrofit is that the majority of the existing HVAC equipment can remain in place.

Because only the control system is being upgraded, installation time is often significantly reduced, disruption to building occupants is minimised, and projects can frequently be completed without major alterations to the mechanical installation.

Can cloud monitoring be added during a retrofit?

Yes. Many retrofit projects include the addition of cloud connectivity, browser-based monitoring, remote diagnostics, and intelligent alarm management.

This allows facilities managers and maintenance teams to monitor system performance remotely, identify faults more quickly, and make informed operational decisions without always attending site.

What types of systems can iACS retrofit?

We regularly retrofit a wide range of HVAC applications, including:

• Air Handling Units
• Heat Recovery Units
• Fan Coil Units
• Smoke Extract Systems
• Plant Room Controls
• Ventilation Systems
• Heating and Cooling Plant
• Legacy BMS Interfaces

Every retrofit strategy is developed around the existing installation and the future operational requirements of the building.

Can obsolete control systems be replaced?

Yes. Many buildings continue to rely on discontinued controllers or unsupported control platforms that are becoming increasingly difficult to maintain.

Our retrofit solutions replace obsolete hardware with modern intelligent controls while preserving as much of the existing HVAC infrastructure as possible.

This improves reliability, future supportability, and long-term operational confidence.

What is the iX control platform?

iX is iACS's intelligent HVAC control platform, developed to provide a flexible, scalable, and future-ready solution for modern building services. Rather than being designed for a single application, iX forms the foundation of multiple HVAC control strategies including Air Handling Units, Heat Recovery Units, Fan Coil Units, and bespoke ventilation applications.

By combining intelligent software, modern communication protocols, cloud connectivity, and application-specific control logic, iX provides building owners, consultants, and facilities managers with complete visibility and control over their HVAC systems.

Can iX integrate with a Building Management System (BMS)?  

Yes.

iX has been developed to integrate seamlessly with modern Building Management Systems through industry-standard communication protocols including Modbus and BACnet.

This allows facilities managers to monitor system status, alarms, trends, operating modes, and performance data while maintaining centralised visibility across multiple HVAC assets.

Does iX support remote monitoring?

Absolutely.

The iX platform provides secure browser-based access and cloud connectivity, allowing authorised users to remotely monitor HVAC systems from virtually anywhere.

Live operational data, alarms, historical trends, and system diagnostics can all be accessed remotely, helping engineering teams respond more quickly to faults while reducing unnecessary site visits.

Can iX improve energy efficiency?

Yes.

Energy optimisation is one of the core principles behind the iX platform.

Rather than operating equipment at fixed outputs, iX continuously adjusts fan speeds, heating and cooling demand, heat recovery operation, and environmental control strategies based on the building's real operating conditions.

This intelligent approach helps reduce energy consumption while maintaining stable comfort conditions and extending equipment life.

Is iX suitable for retrofit projects?

Yes.

Many existing HVAC systems can be upgraded with the iX platform without replacing the complete mechanical installation.

By replacing outdated controllers and software with modern intelligent controls, retrofit projects gain improved operational visibility, browser-based monitoring, cloud connectivity, advanced control strategies, and easier long-term maintenance.

Can iX be customised for bespoke projects?

Yes.

Every project is different, which is why the iX platform has been developed with flexibility in mind.

Our engineering team regularly develops bespoke control strategies, specialist software functionality, custom operating sequences, and unique integrations to meet specific project requirements where standard control solutions are not sufficient.

How easy is iX to operate?

The platform has been designed to simplify day-to-day operation.

Modern browser-based interfaces, intuitive navigation, live dashboards, alarm management, and clear operational information allow engineers and facilities teams to interact with HVAC systems more efficiently than traditional control platforms.

This reduces training requirements while improving confidence in system operation.

Why choose iX from iACS?

iX represents more than a controller, it represents decades of HVAC controls experience brought together into one intelligent platform.

Designed, developed, manufactured, commissioned, and supported entirely by iACS, the platform combines practical engineering knowledge with modern software development to deliver reliable, scalable, and future-ready HVAC control solutions.

Whether supporting a single Air Handling Unit or a complete building services strategy, iX provides the flexibility, performance, and long-term support required for today's buildings.

What is iX-HTM?

iX-HTM is iACS's specialist healthcare HVAC control platform, developed specifically for critical healthcare environments where environmental stability, operational reliability, and intelligent ventilation control are essential.

Built upon the iX platform, iX-HTM incorporates healthcare-focused control strategies designed to support hospitals, operating theatres, isolation rooms, laboratories, treatment areas, and other specialist environments where ventilation performance directly contributes to patient safety and building operation.

The platform combines intelligent AHU control, remote monitoring, advanced alarm management, and flexible Building Management System integration into one complete healthcare solution.

Why is specialist HVAC control important in healthcare environments?

Healthcare buildings operate under far more demanding conditions than standard commercial buildings.

Operating theatres, isolation rooms, laboratories, and treatment spaces require stable temperature control, controlled airflow, pressure relationships, humidity management, and reliable ventilation performance to help support clinical activities and patient wellbeing.

A purpose-designed control strategy ensures these systems continue operating safely, efficiently, and consistently while providing engineering teams with complete visibility of building performance.

What healthcare applications can iX-HTM support?

The iX-HTM platform has been developed to support a wide range of healthcare ventilation applications including:

• Operating theatres
• Isolation rooms
• Clinical treatment areas
• Hospital wards
• Laboratories
• Pharmacy environments
• Diagnostic facilities
• Healthcare plantrooms
• Specialist ventilation systems

Every control strategy is developed around the specific operational requirements of each healthcare environment.

Can iX-HTM manage pressure-controlled environments?

Yes.

Pressure relationships are critical in many healthcare environments, particularly where contamination control and infection prevention are important.

iX-HTM continuously monitors environmental conditions and manages ventilation systems to help maintain stable pressure relationships between adjacent spaces, ensuring ventilation systems respond intelligently to changing building conditions.

Can iX-HTM integrate with hospital Building Management Systems?

Absolutely. The platform supports industry-standard communication protocols including Modbus and BACnet, allowing seamless integration with hospital Building Management Systems.

Facilities teams can monitor alarms, operating conditions, temperatures, pressures, and system performance while maintaining centralised visibility across multiple ventilation systems and healthcare departments.

Does iX-HTM support remote monitoring?

Yes. Authorised users can securely access live operational data, alarm status, trend information, and environmental performance remotely through browser-based interfaces and cloud connectivity.

Remote visibility helps engineering teams respond more quickly to faults, improve maintenance planning, and reduce unnecessary site visits while maintaining confidence in system operation.

Can existing healthcare HVAC systems be upgraded with iX-HTM?

Yes.

Many hospitals and healthcare facilities continue operating reliable Air Handling Units that are controlled by outdated hardware and software.

Our retrofit solutions allow existing healthcare ventilation systems to be upgraded with iX-HTM, providing modern control functionality, browser-based monitoring, cloud connectivity, improved diagnostics, and enhanced Building Management System integration without replacing the complete HVAC infrastructure.

How does iX-HTM improve operational reliability?

Healthcare buildings cannot afford unnecessary HVAC downtime.

iX-HTM has been developed around resilient control strategies, intelligent alarm management, and continuous system monitoring to provide engineering teams with early visibility of operational issues before they develop into larger problems.

This proactive approach helps maintain stable environmental conditions while supporting long-term reliability across critical healthcare infrastructure.

Can iX-HTM be customised for specialist healthcare projects?

Yes. Every healthcare facility operates differently, which is why iX-HTM has been developed as a flexible software platform rather than a fixed control package.

Our engineering team regularly develops bespoke operating sequences, specialist control routines, custom interfaces, and application-specific functionality to meet the exact requirements of hospitals, laboratories, and specialist healthcare facilities.

What is MV-X?  

MV-X is iACS's intelligent control platform developed specifically for Heat Recovery Units (HRUs), Mechanical Ventilation with Heat Recovery (MVHR) systems, and compact ventilation applications.

Rather than providing a generic HVAC controller, MV-X has been engineered around the operational requirements of modern ventilation systems, combining intelligent airflow control, energy optimisation, browser-based monitoring, and flexible integration into one dedicated platform.

The result is a control solution that improves efficiency, simplifies commissioning, and provides complete visibility of ventilation system performance.

What makes MV-X different from traditional MVHR controls?  

Traditional MVHR controllers often provide only basic fan control and limited operational visibility.

MV-X has been developed to deliver a far more intelligent approach by continuously monitoring temperatures, airflow, fan operation, heat recovery performance, and environmental conditions.

Combined with browser-based access, cloud connectivity, modern communication protocols, and flexible software architecture, MV-X provides facilities teams with significantly greater control, diagnostics, and long-term operational insight.

What types of ventilation systems can MV-X control? ​

MV-X has been designed to support a wide range of ventilation applications, including:

• Heat Recovery Units (HRUs)
• Mechanical Ventilation with Heat Recovery (MVHR)
• Commercial ventilation systems
• Environmental ventilation
• Supply and extract systems
• Compact Air Handling Units
• Energy recovery applications

Each control strategy is configured around the specific operational requirements of the project.

Can MV-X improve energy efficiency?

Yes. Energy optimisation is one of the primary objectives behind the MV-X platform.

The software continuously adjusts fan speeds, heat recovery operation, bypass dampers, heating and cooling demand, and ventilation rates based on real-time environmental conditions.

This intelligent control strategy helps minimise energy consumption while maintaining comfortable indoor conditions and maximising heat recovery performance.

Does MV-X integrate with Building Management Systems?

Absolutely. MV-X supports industry-standard communication protocols including Modbus and BACnet, allowing seamless integration with Building Management Systems.

Facilities managers can monitor operating status, alarms, temperatures, airflow performance, and energy data from a central management platform while maintaining complete visibility across multiple ventilation assets.

Can MV-X be monitored remotely?

Yes.

MV-X provides secure browser-based monitoring and cloud connectivity, allowing authorised users to remotely access system information from virtually anywhere.

Live alarms, operating trends, fan performance, temperatures, and system diagnostics can all be viewed remotely, helping maintenance teams respond more quickly and reduce unnecessary site visits.

Is MV-X suitable for retrofit projects?

Yes. Many Heat Recovery Units and MVHR systems continue operating with outdated controls that offer limited diagnostics and poor energy optimisation.

MV-X can be installed as part of a retrofit project, replacing obsolete controllers with a modern intelligent platform while retaining much of the existing mechanical equipment.

This extends equipment life while significantly improving performance, monitoring, and operational flexibility.

Can MV-X be customised for bespoke ventilation applications?  

Yes.

Every building operates differently, which is why MV-X has been developed as a flexible software platform.

Our engineers can configure bespoke operating sequences, specialist control logic, custom interfaces, and project-specific functionality to suit unique ventilation requirements beyond standard applications.

What industries commonly use MV-X?

MV-X is suitable for a wide range of building types including:

• Commercial offices
• Healthcare facilities
• Educational buildings
• Hotels
• Residential developments
• Manufacturing environments
• Public sector buildings
• Mixed-use developments

Each project benefits from a control strategy engineered around the operational requirements of that specific environment.

What is ES-X?

ES-X is iACS's intelligent smoke extract and smoke ventilation control platform, developed specifically for life safety applications. It has been engineered to provide reliable control of smoke extract systems, stairwell pressurisation, corridor ventilation, environmental ventilation, and multi-zone smoke management.

Designed around modern building requirements, ES-X combines intelligent control logic, browser-based monitoring, remote diagnostics, and seamless integration with fire alarm systems and Building Management Systems.

What makes ES-X different from traditional smoke extract controls?

Many traditional smoke ventilation systems rely on basic control panels with limited diagnostics, minimal system visibility, and little flexibility.

ES-X has been developed to provide a more intelligent approach to smoke control. The platform continuously monitors system status, fan operation, dampers, pressures, alarms, and communications while providing authorised users with complete operational visibility through browser-based interfaces and remote monitoring capabilities.

This allows facilities teams to manage life safety systems more effectively while simplifying maintenance and long-term support.

What smoke ventilation applications can ES-X support? 

ES-X supports a wide range of smoke control applications including:

• Smoke extract systems
• Stairwell pressurisation
• Corridor ventilation
• Environmental ventilation
• Car park ventilation
• Multi-zone smoke control
• Hybrid environmental and smoke ventilation systems
• Firefighter override strategies

Every control strategy is configured around the specific fire engineering requirements of the building.

Can ES-X integrate with fire alarm systems?

Yes. ES-X has been specifically designed to integrate with modern fire alarm systems, allowing automatic operation during emergency conditions.

The platform receives signals from the fire alarm system and coordinates fans, dampers, pressure control equipment, and associated life safety devices according to the approved cause-and-effect strategy.

This ensures reliable and repeatable operation whenever the building enters fire mode.

Does ES-X support Building Management System integration

Absolutely. ES-X supports open communication protocols including Modbus and BACnet, allowing Building Management Systems to monitor operational status, alarms, fan performance, pressures, and system health.

While life safety functions remain protected, facilities teams benefit from centralised visibility of smoke ventilation infrastructure across the building.

Can ES-X be monitored remotely?

Yes. The platform provides secure browser-based monitoring and cloud connectivity, allowing authorised users to remotely access live system information from virtually anywhere.

Facilities managers can monitor alarms, operating conditions, maintenance status, and historical trends, improving response times while reducing unnecessary site visits.

Can existing smoke extract systems be upgraded with ES-X?

Yes. Many existing smoke ventilation systems continue to rely on ageing control panels with limited functionality.

ES-X can be implemented as part of a retrofit project, replacing obsolete controls with an intelligent modern platform while retaining much of the existing mechanical smoke ventilation infrastructure where appropriate.

This improves reliability, operational visibility, and future maintainability without requiring complete system replacement.

Can ES-X be customised for specialist smoke control strategies?

Yes. Every smoke ventilation project has unique fire engineering requirements.

Our engineering team can develop bespoke software functionality, custom operating sequences, pressure control routines, interface logic, and project-specific control strategies that align with the building's fire strategy and operational objectives.

Why choose ES-X from iACS?

ES-X represents decades of experience in HVAC controls and smoke ventilation engineering brought together into one intelligent platform.

Designed, developed, manufactured, commissioned, and supported entirely by iACS, ES-X provides building owners, consultants, contractors, and facilities managers with a modern smoke control solution that is reliable, scalable, easy to manage, and built for long-term operational confidence.

From initial design through commissioning and ongoing support, ES-X delivers a complete smoke ventilation control solution engineered around real-world building performance.

What does iACS manufacture in-house?  

iACS designs and manufactures a wide range of HVAC control solutions from our UK facility. This includes intelligent control panels, bespoke control systems, software platforms, retrofit solutions, and specialist control applications for Air Handling Units, Heat Recovery Units, Fan Coil Units, and Smoke Extract Systems.

By manufacturing in-house, we maintain complete control over quality, consistency, and project delivery while ensuring every system is built around the customer's exact requirements rather than a standard off-the-shelf solution.

Why does in-house manufacturing benefit my project?

Keeping design, software development, panel manufacturing, and testing under one roof provides greater consistency throughout the project.

Our engineering, software, and production teams work closely together, ensuring every control panel reflects the agreed project requirements and control strategy.

This integrated approach reduces communication gaps, improves quality control, speeds up decision making, and provides greater confidence that the delivered solution matches the original design intent.

Are all control panels built in the UK?

Yes.

Every iACS control panel is designed, assembled, wired, and tested within our UK manufacturing facility.

Maintaining production in-house allows us to implement consistent quality procedures, maintain complete traceability, and ensure every project receives the same level of engineering attention regardless of size or complexity.

Can iACS manufacture bespoke control panels?  

Absolutely. Many of our projects involve bespoke HVAC applications where standard control panels are not suitable.

Our engineering team develops custom control panel layouts, bespoke software strategies, specialist interfaces, and project-specific hardware configurations tailored to the operational requirements of each installation.

No two buildings are identical, which is why many of our solutions are engineered specifically for the project rather than selected from a catalogue.

How do you ensure quality during manufacturing?

Quality is embedded throughout our production process.

Every project follows structured engineering procedures supported by detailed documentation, design reviews, quality inspections, and comprehensive factory testing before leaving our facility.

As an ISO 9001 certified organisation, quality management forms part of every stage of our manufacturing process, helping ensure consistency across every control solution we deliver.

Are control panels factory tested before delivery?

Yes. Every control panel undergoes structured Factory Acceptance Testing (FAT) before dispatch.

Testing typically includes verification of wiring, I/O operation, software functionality, communications, safety circuits, alarms, and project-specific operating sequences.

This reduces the likelihood of commissioning issues on site while giving clients confidence that the system has been fully validated before delivery.

Can you manufacture control panels to consultant specifications?

Yes. We regularly manufacture control panels based on consultant specifications, sequences of operation, point schedules, and project documentation.

Our engineering team reviews the supplied information in detail before manufacturing begins, ensuring the finished solution aligns with both the technical specification and the operational requirements of the building.

Do you provide drawings and technical documentation? 

Yes. Every project is supported by the appropriate technical documentation, which may include wiring diagrams, control schematics, point schedules, BMS points lists, panel layouts, software information, and commissioning documentation where applicable.

Providing clear documentation helps simplify installation, commissioning, future maintenance, and long-term asset management.

Can production be adapted for specialist or OEM projects?  

Yes. We regularly work with OEM manufacturers, specialist contractors, and technology partners to develop bespoke control solutions for unique applications.

Our production capability is flexible enough to support one-off specialist projects as well as repeat manufacturing for larger product programmes, allowing customers to benefit from a scalable engineering partnership.

Do iACS provide HVAC controls installation services?

Yes. iACS provides professional installation services for HVAC control systems across a wide range of commercial and specialist applications. Whether the project involves a new Air Handling Unit, Heat Recovery Unit, Smoke Extract System, Fan Coil Unit, or a complete controls retrofit, our engineers can support the installation process from start to finish.

Our goal is to ensure every control solution is installed correctly, integrated efficiently, and prepared for successful commissioning.

What is included within your installation service?  

Our installation service covers far more than mounting a control panel.

Depending on the project scope, we can install control panels, field devices, sensors, actuators, pressure transmitters, variable speed drives, communication networks, and associated HVAC control equipment.

We also coordinate the integration between the controls, mechanical plant, and Building Management System to ensure every part of the system operates together as intended.

Can you install control systems into existing buildings?

Yes.

Many of our installation projects involve upgrading existing HVAC systems within occupied buildings.

Our engineers carefully plan retrofit installations to minimise disruption while maintaining building operation wherever possible. Existing equipment can often remain operational during parts of the installation process, helping reduce downtime and project risk.

Do you install systems throughout the UK?

Yes. Our installation teams support projects across the UK, including commercial developments, healthcare facilities, educational buildings, hospitality venues, industrial sites, and specialist environments.

We regularly coordinate with consultants, mechanical contractors, electrical contractors, and facilities teams to deliver projects efficiently regardless of location.

Can iACS install systems supplied by other manufacturers?

Yes. While many projects involve complete iACS control solutions, we can also support the installation of third-party equipment where appropriate.

Our experience across a wide range of HVAC applications allows us to integrate and install systems within existing building infrastructure while ensuring reliable operation and compatibility.

Do you install sensors, actuators, and field devices?  

Absolutely. A successful HVAC control system relies on accurate field information.

Our engineers install and integrate a wide variety of sensors, actuators, valves, pressure transmitters, dampers, room devices, and other field equipment to ensure the complete control strategy performs exactly as designed.

How do you ensure installation quality?

Every installation follows structured engineering procedures developed specifically for HVAC control systems.

Our engineers work from approved drawings, wiring schedules, and project documentation while maintaining organised cable management, consistent labelling, and thorough verification throughout the installation process.

This structured approach helps simplify commissioning while improving long-term maintenance and system reliability.

Can installation be coordinated with other contractors?

Yes. HVAC projects often involve multiple disciplines working simultaneously.

We regularly coordinate with mechanical contractors, electrical contractors, BMS specialists, consultants, and main contractors to ensure installations are completed efficiently while supporting the overall project programme.

Clear communication throughout the installation phase helps minimise delays and improve project coordination.

What happens after installation is complete?

Once installation has been completed, the system progresses into the commissioning phase.

Our engineers carry out pre-commissioning checks to verify wiring, communications, I/O functionality, and equipment readiness before live operational testing begins.

This ensures the commissioning process starts with a fully prepared and validated installation.

What is HVAC controls commissioning? 

HVAC controls commissioning is the process of testing, validating, and optimising a control system to ensure it performs exactly as designed before the building becomes operational.

During commissioning, our engineers verify that every sensor, actuator, fan, valve, alarm, communication network, and control sequence operates correctly under real-world conditions. This ensures the system delivers the intended levels of comfort, energy efficiency, reliability, and operational performance from day one.

Why is commissioning so important?

Even the best-designed HVAC control system can underperform if it is not commissioned correctly.

Commissioning ensures every component works together as intended, identifying and resolving issues before the building is handed over. It also provides confidence that temperatures, airflow, pressures, alarms, and control strategies are operating correctly while reducing the likelihood of future faults and unnecessary maintenance visits.

A properly commissioned system is more reliable, more efficient, and easier to maintain throughout its lifecycle.

What happens during commissioning?  

Commissioning follows a structured process designed to validate the complete HVAC control strategy.

Typical activities include:

• Verifying all field devices
• Testing inputs and outputs
• Validating fan and valve operation
• Checking communication networks
• Testing alarms and safety functions
• Confirming BMS integration
• Optimising operating parameters
• Demonstrating system performance

Every project is commissioned according to its individual operational requirements.

Can iACS commission systems supplied by other manufacturers? 

Yes. Our commissioning engineers regularly work on projects involving third-party mechanical equipment and HVAC infrastructure.

Provided the installation is suitable and the project requirements are understood, we can support the commissioning of a wide range of ventilation and HVAC systems while ensuring they operate correctly within the wider building services strategy.

Do you optimise systems during commissioning?

Absolutely. Commissioning is not simply about confirming that equipment switches on.

Our engineers review and fine-tune operating parameters, fan speeds, temperature control, pressure relationships, airflow strategies, and energy optimisation routines to ensure the system performs efficiently under real operating conditions.

This optimisation helps improve occupant comfort while reducing long-term energy consumption.

Can you commission systems integrated with a Building Management System?

Yes. Where a Building Management System forms part of the project, we validate communications between the HVAC controls and the BMS.

This includes confirming data exchange, alarms, operating modes, schedules, trends, and control functionality to ensure the two systems operate together seamlessly.

Do you provide commissioning documentation?

Yes. Upon completion, we provide the relevant commissioning documentation required for the project.

Depending on the application, this may include commissioning reports, test records, control sequence verification, alarm validation, BMS point verification, and supporting project documentation.

This provides clients with a clear record of the completed commissioning process and supports future maintenance activities.

Can commissioning be carried out on retrofit projects?  

Yes. Many retrofit projects require existing HVAC systems to be recommissioned following controls upgrades.

Our engineers validate both the existing mechanical equipment and the new control strategy to ensure the upgraded system performs correctly while taking advantage of the enhanced functionality provided by the new controls platform.

What support is available after commissioning?

Our relationship does not end once commissioning has been completed.

iACS provides ongoing technical support, remote diagnostics, optimisation assistance, software updates, and engineering advice to help customers maintain reliable HVAC performance throughout the life of the system.

Should operational requirements change in the future, our engineering team can continue supporting the evolution of the control strategy.