baumhaus815
2017-10-22 11:14:11
- #1
Hello everyone,
we have decided to build with GÜ and the start of construction is now imminent. We now have to decide on a specific controlled residential ventilation system.
The single-family house has three floors (KG, EG, OG), and the floor area of each floor is about 80 sqm. The controlled residential ventilation is planned only for the EG and OG, not for the basement.
We now have the choice between two controlled residential ventilation systems, the Zehnder Comfoair Q350 and the Wolf CWL-300. The Wolf system would be overall (including pipes, installation, etc.) 1,700 euros cheaper.
As far as I can see, the Comfoair 350 is the newer system, has lower noise emissions and a higher heat recovery rate. In addition, it is naturally designed for 50 m3 higher capacity than the CWL-300, which might affect operation in that it could be run at a lower setting and thus operate quieter and more economically.
Now we have the following considerations: Do the lower measured noise values actually make a difference in real life (or only under laboratory conditions)? How about the sizing of the system: Theoretically, 300 m3 max. capacity would be enough for us, but would 350 m3 not be better for practical reasons? Ultimately, the Comfoair Q350 is certainly the better system, but we are asking ourselves whether the 1,700 euro premium is worthwhile for our house...
Which controlled residential ventilation system would you recommend as experts? It is quite difficult as laypersons to make the right decision here.
Thank you in advance!
we have decided to build with GÜ and the start of construction is now imminent. We now have to decide on a specific controlled residential ventilation system.
The single-family house has three floors (KG, EG, OG), and the floor area of each floor is about 80 sqm. The controlled residential ventilation is planned only for the EG and OG, not for the basement.
We now have the choice between two controlled residential ventilation systems, the Zehnder Comfoair Q350 and the Wolf CWL-300. The Wolf system would be overall (including pipes, installation, etc.) 1,700 euros cheaper.
As far as I can see, the Comfoair 350 is the newer system, has lower noise emissions and a higher heat recovery rate. In addition, it is naturally designed for 50 m3 higher capacity than the CWL-300, which might affect operation in that it could be run at a lower setting and thus operate quieter and more economically.
Now we have the following considerations: Do the lower measured noise values actually make a difference in real life (or only under laboratory conditions)? How about the sizing of the system: Theoretically, 300 m3 max. capacity would be enough for us, but would 350 m3 not be better for practical reasons? Ultimately, the Comfoair Q350 is certainly the better system, but we are asking ourselves whether the 1,700 euro premium is worthwhile for our house...
Which controlled residential ventilation system would you recommend as experts? It is quite difficult as laypersons to make the right decision here.
Thank you in advance!