Experience annual billing KfW70 house, high energy efficiency

Ah, but you would have to set a temperature for that, or does the ventilation decide that? The problem is usually that it is very warm outside in the summer and you blow the warm outside air inside. That's why we also turn it off or set it to away in the summer...

Ah, but you would have to set a temperature for that, or does the ventilation decide that?
The problem is usually that it is very warm outside in summer and you blow in the warm outside air. That's why we also turn it off or set it to away in summer...

With the Pluggit, I think the ventilation decides that. It must be warmer than 18 degrees outside, I believe.

The experience of another homeowner (almost the same house, same system but with bypass): You still blow the warm air inside, the whole thing brings very little or nothing. It is simply not an air conditioning system, it’s just ventilation.

In transitional situations, I simply turn off the supply air and keep the exhaust air on and open a few windows on the upper floor slightly tilted. Has the same effect.

or just turn the system completely off or only on at night... Thank you anyway for the explanation of our system

...that whole thing brings very little to nothing...

It should be clear that the bypass can't do anything during the day in the height of summer. However, I would have expected / hoped that with the bypass I could at least bring some cool air into the house at night. I'm curious, the first summer in the house is still ahead...

Hello everyone,

I can only agree with Thorsten. We also have an AP310 with a summer bypass. However, I don’t use it because it doesn’t really help much. In summer, I prefer to take action myself and open two windows upstairs and two to three on the ground floor so that air exchange takes place overnight.

We have now been living for over a year in our Massa Haus with 160 sqm of living space. The first gas bill was at 9000 kWh. But that also included the heating of the screed, and the gas boiler was not properly adjusted yet. For that, our electricity provider complained that they had to refund us so much. We are a household of 4 people and have only consumed 2200 kWh of electricity.

Best regards Matthias

I can only agree with Thorsten.

Hi Matthias,

you are here too. I am very pleased.

Your qualified judgment will help many here.

Best regards
Thorsten