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To achieve Net Zero in schools, we need to minimise heat loss, reducing heat plant and fossil fuel consumption. AirMasters can recover up to 90% of the classrooms heat and have a low specific fan power, making them the ideal holistic choice for Net Zero classrooms.
In this table you will see all the relevant key data for the AirMaster product range:
 |  |  |  |  |  |  | |
| Key Statistics | AM 150 | AM 300 | AM 500 | AM 800 | AM 1000 | AM 900 | AM 1200 |
|---|---|---|---|---|---|---|---|
| Capacity (l/s) | 41 | 76 | 153 | 201 | 292 | 222 – 230 | 294 – 363 |
| Capacity (m³/h) | 147 | 275 | 550 | 725 | 1050 | 800 – 830 | 1060 – 1310 |
| Max. SFP (W/l/s) | 1.2 | 1.5 | 0.9 | 0.9 | 1.0 | 1.0 | 0.7 |
| Heat recovery efficiency (%) | 86% | 87% | 90% | 89% | 88% | 96% | 97% |
| Dimensions W x H x D (mm) | 1170 x 261 x 572 | 1180 x 344 x 705 | 1600 x 439 x 779 | 1910 x 474 x 916 | 2325 x 561 x 1283 | 800 x 2323 x 602 – 687 | 496 x 2098 – 2406 x 2427 |
| Weight (kg) | 47 | 85 | 108 | 157 | 302 | 180 | 545 – 630 |
| Duct connections (ø mm) | 125 | 160 | 250 | 315 | 315 | 315 | 400 |
Ensures good indoor air quality regardless of the external conditions
Draught-free air distribution using the Coanda effect, without ducts or diffuser grilles
Low noise: only 35 dB(A) at 1m
< 30 dB(A) for SEN classrooms
ePM10 50% (M5) minimum filter grade
Demand control links fan speed to room CO₂ levels
49 dB attenuation of external noise
BB101 and BB93 compliant
Online monitoring on our Internet of Things platform, Airlinq Online
Automatic summer bypass and night-time cooling
No recirculation of classroom air
Low SFP, high heat recovery
The first step on the road to Net Zero is to achieve energy savings. In the UK, a substantial quantity of these energy savings will be realised by reducing heat loss in existing buildings. Consequently, our building fabric needs to be improved.
However, a classroom’s ventilation demand is significant. The air within these rooms contains a great deal of heat, which we need to conserve if we are to achieve our Net Zero goals.
Using mechanical ventilation with heat recovery (MVHR), we can supply air to the room at an appropriate temperature, whilst maintaining good indoor air quality. AirMaster achieves this with a high heat recovery efficiency and low specific fan power.
AirMaster is a Danish product, which was created approximately 30 years ago. Therefore, we benefit from decades of Danish experience in the mitigation of heat loss, with minimal energy waste
Explore our units and find out more about technical features and installation suitability.
AirMaster Smart Mechanical Ventilation units (SMVs) are decentralised MVHR. They consume a very small amount of energy due heat exchangers, but also have a very low specific fan power (SFP). This is made possible because they use the Coanda Effect to distribute air in the room. Using the Coanda Effect also means that no distribution ductwork is required.
AirMasters are typically fitted with integrated CO2 sensors, enabling demand-controlled ventilation. This benefits both indoor air quality and energy usage: when occupancy is high, the ventilation rate increases, improving the indoor air quality; when occupancy is low, the ventilation rate decreases, reducing energy consumption.
By using heat recovery, the Coanda effect, and having low specific fan powers, AirMasters achieve much lower energy performance than centralised and hybrid mixer boxers, making them an optimal choice for Net Zero school design.
Increasing CO₂ concentrations have a major impact on both the indoor and outdoor environment. To reduce carbon emissions, buildings have been made more air-tight, reducing heat loss and making them more energy efficient. But this is a double-edged sword; with inadequate ventilation, an air-tight room will suffer from poor air quality and a high CO₂ concentration.
Link to impact of CO2 document?
In July 2021 the AirMaster AM 1000 was awarded Passivhaus Component certification under the category of “Decentralised ventilation system (school room).” This makes it possible to use the AM 1000 in Passivhaus school classrooms, as well as other Passivhaus certified buildings.
For Passivhaus schools, the AirMaster AM 1000 is a low-SFP alternative to centralised systems.
Please find relevant links for further reading below, or visit our downloads page.
The key features and benefits of AirMaster products include:
- Ensuring good indoor air quality regardless of external conditions
- Providing draught-free air distribution using the Coanda effect, without ducts or diffuser grilles
- Low noise levels, with only 35 dB(A) at 1m, making them suitable for SEN classrooms (< 30 dB(A))
- Minimum filter grade of ePM10 50% (M5)
- Demand control that links fan speed to room CO₂ levels
- 49 dB attenuation of external noise
- Compliance with BB101 and BB93 standards
- Online monitoring via the Airlinq IoT platform
- Automatic summer bypass and night-time cooling
- No recirculation of classroom air
- Low specific fan power (SFP) and high heat recovery efficiency
The key statistics for the AirMaster product range are as follows:
Model Capacity (l/s) Capacity (m³/h) Max. SFP (W/l/s) Heat recovery efficiency (%) Dimensions (W x H x D mm) Weight (kg) Duct connections (ø mm)
AM 150 41 147 1.2 86% 1170 x 261 x 572 47 125
AM 300 76 275 1.5 87% 1180 x 344 x 705 85 160
AM 500 153 550 0.9 90% 1600 x 439 x 779 108 250
AM 800 201 725 0.9 89% 1910 x 474 x 916 157 315
AM 1000 292 1050 1.0 88% 2325 x 561 x 1283 302 315
AM 900 222 - 230 800 - 830 1.0 96% 800 x 2323 x 602 - 687 180 - 630 315
AM 1200 294 - 363 1060 - 1310 0.7 97% 496 x 2098 - 2406 x 2427 545 - 630 400
The main benefits of using decentralised MVHR systems like AirMaster are:
1. Achieving energy savings: The first step towards Net Zero is to reduce heat loss in existing buildings, and decentralised MVHR systems can help achieve this by conserving the heat within the classrooms.
2. Maintaining good indoor air quality: Decentralised MVHR systems can supply air to the room at an appropriate temperature while maintaining good indoor air quality, which is essential for a learning environment.
3. High heat recovery efficiency: AirMaster units have a high heat recovery efficiency of up to 97%, allowing them to recover a substantial amount of the heat within the classroom.
4. Low specific fan power: AirMaster units have a low specific fan power, further contributing to energy savings and reducing the overall energy consumption of the ventilation system.
AirMaster products have the following online monitoring and IoT features:
- They are compatible with the Airlinq Online IoT platform, which allows for remote monitoring and control of the units.
- Through the Airlinq platform, users can track key performance metrics such as energy usage, indoor air quality (including CO2 levels), and system faults.
- The online monitoring capabilities enable proactive maintenance and optimisation of the ventilation system, helping to ensure it operates efficiently and effectively.
- The IoT integration also allows for seamless integration with building management systems and other smart building technologies.
AirMaster products have been designed with a strong focus on noise and acoustic performance:
- They have low noise levels, with only 35 dB(A) at 1 metre distance, making them suitable for use in SEN (Special Educational Needs) classrooms, where the recommended noise level is below 30 dB(A).
- The
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