HRV or ERV Ventilation – Two Solutions from Blauberg AirOne
Blauberg AirOne is a local heat recovery ventilation unit available in both HRV and ERV configurations. Both bring fresh outdoor air into the room, remove stale indoor air, and reduce heat loss associated with ventilation.
The main difference lies in humidity:
Blauberg AirOne HRV recovery heat from the exhaust air, while Blauberg AirOne ERV allows some of the moisture to be recovered in addition to the heat.
Therefore, the choice between HRV and ERV is not about which unit is better, but rather which AirOne version is better suited to the indoor climate of a specific home.
Blauberg AirOne HRV – if you want to remove more moisture
The AirOne HRV is well-suited for homes where high humidity, window condensation, or the need to effectively remove moisture from the building via ventilation are issues.
The HRV version uses the heat from the exhaust air to heat fresh outdoor air, but is not designed to recover moisture.
→ View product: Blauberg AirOne HRV local heat recovery unit
Blauberg AirOne ERV – when the air becomes too dry in winter
The AirOne ERV uses an enthalpy heat exchanger and, in addition to heat, allows some of the indoor air’s humidity to be retained.
This makes the ERV version particularly attractive for new, well-sealed single-family homes where ventilation runs continuously and indoor relative humidity tends to drop too low during cold winters.
→ View the product: Blauberg AirOne ERV humidity-recovery heat exchanger
AirOne HRV or ERV?
| AirOne HRV | AirOne ERV | |
|---|---|---|
| Heat Recovery | ✓ | ✓ |
| Humidity Recovery | – | ✓ |
| Fresh Air Intake | ✓ | ✓ |
| CO₂ Removal | ✓ | ✓ |
| A Home with Excess Moisture | Preferred | Possible |
| Very Dry Indoor Air in Winter | – | Preferred |
| A New Energy-Efficient House | ✓ | Particularly interesting |
| Bedroom | ✓ | ✓ |
I’d like to end this article with a strong CTA:
Should you choose the Blauberg AirOne HRV or ERV?
The right choice depends on the room’s humidity, ventilation needs, and the building’s use. Pro Air OÜ can help you determine which is a better fit for your home: the AirOne HRV with heat recovery or the AirOne ERV with humidity recovery.
