PHAM NEWS | DECEMBER/JANUARY 2026 Energy SavingAwards 19


Energy Management System of the Year Winner: Prefect Controls for Irus+ Control Sensor


Aiming to redefine how energy is controlled and conserved across multi-occupancy buildings, Prefect Irus stands out as a transformative Building Energy Management System. Purpose- built for occupancy-based control, Irus delivers precise, room- level energy management by responding dynamically to real- time usage patterns, dramatically reducing waste without compromising comfort. Central to this performance is the Irus+ControlSensor, the system’s intelligent, multi-sensor device fitted in every room. By monitoring temperature, occupancy, humidity, light, sound pressure and optional CO2, it physically controls each heat source, ensuring rooms are heated only when needed. This granular, room-by-room approach enables heating load savings of up to 50%, a level unmatched by traditional, whole-building control systems. Irus operates via a secure


online platform, giving facilities teams full visibility and the ability to remotely manage every individual room. Its tamper-


Highly Commended: Clarke Controls for EMS


Judge’s comment: “Intelligent BMS operating in more that 180 sites in the UK. A tested product with great reviews and testimonials.”


proof design safeguards settings, while its software ecosystem turns real-time building data into actionable efficiency recommendations that deliver immediate savings. Irus also engages occupants through Direct-to-Room Communications, using behavioural nudges and guidance to further reduce unnecessary


energy use. Because it relies on innovative Mains Borne Signalling, installation requires minimal disruption, making it viable for both new-build and retrofit estates. Proven across more than


180 universities and PBSA sites, Irus consistently reduces heating waste, cuts carbon and strengthens net zero compliance.


Ventilation Product of the Year VES for AirDoor


With the increasing demand for net zero carbon buildings, efficient air distribution and ventilation systems have become vital in the HVAC sector. AirDoor directly addresses one of the biggest sources of energy waste in commercial buildings: weather- driven air infiltration through open entrances. Unlike traditional overdoor heaters or air curtains – often energy-intensive, noisy and ineffective in strong wind conditions – AirDoor creates a stable, invisible air barrier that keeps conditioned air in and the elements out. Using advanced aerodynamic


design validated through computational fluid dynamics, AirDoor monitors real-time conditions and automatically adjusts its variable-speed fans to counteract incoming airflow. This intelligent, demand-based operation ensures that energy is used only when necessary, dramatically reducing HVAC load while maintaining comfortable, consistent indoor conditions. Its performance is proven. This translates to annual electricity savings of c.65,000kWh and


c.20,000 kg of CO2 (using BEIS [2018] CO2 emission factor 0.309 kge / kWh). Gas savings were c.56,000kWh and c.11,400kg of CO2 (using conversion factor 0.203kg per kWh). Extrapolating a conservative figure of 15,000 kg of CO2 per store over the units installed to date provides savings over 700,000kg of CO2 every year. AirDoor delivers up to 95% energy savings vs overhead air curtains and up to 54% savings when conditioning the whole space.


Judge’s comment: “This product provides much better efficiencies to the traditional overhead air curtain and increases energy saving massively.”


In terms of cost savings, a typical AirDoor costs £32,000 to install and £311 to run annually (as it contains no heating/ cooling element). An 18kW overhead door heater costs £10,000 to install and £9,988 to run annually (based on an Envirotec 18kW electric door heater – EAB 1800). By replacing an existing overhead air heater with an AirDoor, the payback period will be 3.44 years, and long term there are significant savings to be made. By installing an AirDoor the


existing HVAC system will consume less energy - meaning that increased energy and financial savings will be made.


The Energy Management System (EMS) from Clarke Controls delivers substantial energy savings for commercial and industrial buildings, with clients regularly cutting heating and energy costs by up to 25%. Precision Targeted Zoning


uses wireless sensors accurate to ±0.5°C, reducing temperature fluctuations and preventing wasted energy. Delay Action Door Switches automatically stop heating in zones where doors are left open, conserving energy in high-traffic areas. The cloud-based interface provides real-time monitoring and control from any device, allowing facilities teams to fine-tune energy use remotely.


Detailed electrical metering identifies high-consumption circuits, enabling targeted interventions. Intelligent scheduling and adaptive controls, including warm-down periods and preheat sessions, ensure comfort while minimising unnecessary consumption. The system learns building usage patterns over time, adjusting heating and lighting to maximise efficiency. Collectively, these features


enable businesses to reduce heating and energy bills by up to 25% or more year-on- year, contributing to both cost savings and environmental sustainability via a reduction in Scope 1 and 2 emissions.


Highly Commended: Testo for the Testo 417 Vane Anemometer


The Testo 417 is designed to help building operators cut energy waste by ensuring ventilation systems run only as hard as needed. The Testo 417 Vane Anemometer is engineered with several core features that directly translate into substantial energy savings for ventilation systems. At its heart, the ability to accurately measure airflow velocity and volume flow is paramount. In HVAC systems, inefficient ventilation – whether it’s over-ventilation or under-ventilation – leads to considerable energy waste. Its large 100mm vane


delivers stable, precise airflow measurements at supply and extract points, allowing


technicians to correctly balance systems and avoid oversupplying conditioned air, a major cause of unnecessary fan, heating and cooling demand. The integrated temperature sensor helps identify thermal losses that force HVAC equipment to work harder, while timed and multi- point averaging highlights performance issues that inflate energy use. By enabling accurate,


repeatable measurements, the Testo 417 ensures ventilation rates match actual building needs, improving efficiency, reducing carbon output and supporting long-term energy savings across HVAC operations.


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