Heat recovery unit WALLER Wi-Fi CO₂
WALLER Wi-Fi CO₂ is an intelligent variant of the modern WALLER wall-mounted energy recovery unit. Equipped with advanced sensors, it automatically responds when the carbon dioxide level is exceeded, adjusting the unit's operation in real time. Thanks to Wi-Fi connectivity and the option to control it via a mobile app, it is an ideal solution for apartments, offices, conference rooms, hotels, or cafés.
About the product
WALLER Wi-Fi CO₂ is an intelligent variant of the wall-mounted decentralised energy recovery unit, which independently responds to the air quality in the room. Thanks to advanced sensors, the unit automatically adjusts its operation in real time, switching to supply mode once the carbon dioxide threshold is exceeded.
Automatic regulation significantly improves user comfort – there is no need to manually change the operating mode, as the unit takes care of a healthier microclimate on its own. Ductless wall installation means the solution works well in apartments, offices, conference rooms, hotels, and cafés, even in existing buildings.
The ceramic exchanger enables energy recovery which, in regenerative mode, with alternating supply and exhaust in 75-second cycles, recovers heat and moisture, reducing thermal losses. Quiet, energy-efficient operation is ensured by an EC motor with a built-in gravity shutter, while the F7 filter together with the pre-filter keep the supply air clean. Full control, including setting CO₂ thresholds, changing modes, and schedules, is done from the mobile app via Wi-Fi. Energy class „A” allows the unit to qualify for the „Clean Air” programme.
Key features
- Automatic regulation based on the CO₂ level
- Wireless control of the unit via Wi-Fi and a mobile app
- Regenerative mode with heat and moisture recovery
- Ductless installation – fitted in the wall
- Built-in gravity shutter
- Quiet, energy-efficient EC motor operation
- Ceramic exchanger
- F7 filter + pre-filter
- Energy class A
Why choose WALLER Wi-Fi CO₂?
Intelligent decentralised heat recovery responding to air quality
WALLER Wi-Fi CO₂ operates in regenerative mode. If the CO₂ level exceeds the set threshold, the unit automatically switches to supply mode to introduce fresh air and reduce the CO₂ concentration.
Automatic regulation of the unit
The automatic regulation functions significantly improve user comfort. There is no need to manually change the operating mode. The unit independently takes care of the air quality in the room, ensuring a healthier microclimate.
Energy recovery unit with a ceramic exchanger and efficient energy recovery
In regenerative mode, the unit alternately supplies and exhausts air in 75-second cycles, allowing heat and moisture to be recovered. The ceramic exchanger enables energy efficiency to be maximised while reducing thermal losses.
Mobile control from anywhere
Thanks to the mobile app, the user has full control over the unit. They can set CO₂ thresholds, change operating modes, activate schedules, or check the unit’s status.
Supplied with an F7 filter
Ensure the effective and hygienic operation of your wall-mounted energy recovery unit with the included F7 filter. The F7 filter offers an ISO ePM1 ≥50% protection level for more demanding spaces.
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Technical specification
| Parameter | WALLER Wi-Fi CO₂ |
|---|---|
| Product code | WALLER-CO2-2451 |
| Nominal airflow [m³/h] | 50 |
| Voltage / frequency [V/Hz] | 230 / 50–60 |
|
Rated current [A] 3rd / 2nd / 1st stage |
0.06 |
| Heat recovery efficiency [%] | 76 |
|
Motor power [W] 3rd / 2nd / 1st stage |
7.8 |
| Motor IP rating | 22 |
| Weight [kg] | 4.2 |
| Noise level [dB] | 37 |
| Energy efficiency class | A |
Filters
| Filter | WALLER 64 |
|---|---|
| F7 filter | 1 × FEU7-WALLER-2448 |
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WALLER wall-mounted energy recovery units are used in rooms where standard heat recovery cannot be applied.
The choice mainly depends on the requirements of the room.
- For example, you can choose the standard WALLER Wi-Fi model when you need basic ventilation with the possibility of heat and moisture recovery.
- You can choose a decentralised energy recovery unit with a CO2 sensor, which is used in rooms where the carbon dioxide concentration may rise, e.g. in boiler rooms. The wall-mounted energy recovery unit automatically adjusts the humidity level relative to the set value.
- You can also choose a wall-mounted energy recovery unit with an RH (humidity) sensor, e.g. in places where moisture removal is essential, such as basements or bathrooms.
Yes, such a combination will ensure even better air quality. For example, in a home of approximately 100 m², WALLER RH can be installed in the toilet instead of a standard fan, and WALLER CO2 in the living room. Such a setup will ensure the most effective air circulation, maintaining air quality relative to the set parameters.
WALLER energy recovery units feature a ceramic exchanger enabling heat and moisture recovery.
No, a Wi-Fi module is not available in the WALLER 64 energy recovery unit. To control the wall-mounted unit using the app, you need to purchase a wall-mounted energy recovery unit from the WALLER Wi-Fi or WALLER Wi-Fi CO₂/RH series.