Building a single-family house in NRW

To the opponents and/or doubters of controlled residential ventilation:

Get into a car and turn off the air conditioning. In 10 minutes, you will know what the feeling in your house is like during extended stays without ventilation, whether manual or through controlled residential ventilation.

When you then have to open the windows to get air, the stage is reached to start thinking about how much heating energy you are throwing outside through the house instead of being able to keep the windows closed and still get fresh air. The air inside a car is, of course, used up much faster than in a house; it takes a few days there before you start feeling confined.

Those who nowadays forgo air conditioning in their car do not know the difference and barely breathe properly on their longer journeys. For short distances, this phenomenon does not weigh as heavily, since opening the door again supplies fresh air to the interior.

Best regards in short

My Lady, with all due respect, it is not like that in the car, as we have one of two cars without AC. There is still the fan. It always blows fresh air in. In the house, those would be window frame ventilators, forced ventilation. Karsten

No, the ventilation vents are the crank windows at the back. Every six months you have to crank them back up again, then they’ve sagged a bit.

100W power consumption is already increased. If you look at the datasheets, in a single-family house at normal operating levels, about 50W can be expected. However, this largely depends on the correct sizing and the pressure loss, e.g. caused by dense filters.

Economically, it is probably nothing. With a purchase price of over €10,000, you don't need to try to offset the operating costs.

Still want it

Hi,

100W power consumption is quite high though.

I have to honestly admit that I only estimated the 100 W, haven’t gotten around to putting a measuring device in between yet. Will do it asap. Our controlled residential ventilation is rated at about 175 watts consumption at full load; it runs here permanently at about 2/3 load. (350 cbm is max throughput, we run about 220 cbm/h).

But it doesn’t matter, even at 50 watts consumption the controlled residential ventilation doesn’t “pay off.” That’s not what it’s about anyway. It’s about comfort, pollen protection for hay fever sufferers, and a pleasant living climate without constantly having to keep windows open.

Cheers,

Andreas

But it doesn't matter, even with 50 watts consumption the controlled residential ventilation doesn't "pay off".

Why not? It's a controlled residential ventilation with heat recovery, right?