ᐅ Mechanical ventilation with heat recovery using enthalpy or rotary heat exchangers

Hello everyone,

we are currently planning our new build. The house will have approximately 175 square meters (1880 square feet) of living space.
At the moment, we are researching ventilation systems. We want a central ventilation system with heat recovery and would like to ask if you can recommend any manufacturers or models.
It is important for us to have an efficient ventilation system with quiet operation as well as low maintenance costs (filter changes).

Furthermore, we are interested in whether you generally recommend a central ventilation system with an enthalpy exchanger or with a rotary heat exchanger. Both have their advantages and disadvantages.

Thank you very much for your help.

Good luck

I don’t think there are any devices with rotary heat exchangers anymore... What kind of model is that supposed to be?

So, we have a Zehnder ComfoAir 350q with an enthalpy exchanger, and still, the indoor humidity levels are around 30-35% if that answers your question. I changed the filters for the first time last week. The filters for the unit cost about €33, and the exhaust filters are €10 for 5 pieces. You can hear the system at 2 out of 3 times during the night despite having a silencer. But I guess that would be the case with any other system as well. It’s a subjective matter anyway.

Lumpi_LE schrieb:

I don’t think there are any devices left with rotary heat exchangers... What model is that supposed to be?

HOVAL Homevent units have a rotary heat exchanger

Hoval or Systemair, for example, still offer models with rotary heat exchangers.

Interesting, I thought something like that was long outdated. The advantage is probably the price?
We have a device with an enthalpy exchanger. As with @Zaba12, the air is currently quite dry at around 35% humidity at 23-24°C (73-75°F), which is not surprising given the 60% at 5°C (41°F) outside temperature.