ᐅ New construction with Poroton T7 MW 36.5 blocks without a mechanical ventilation system

Hello everyone,

what do you think, is it necessary to include a mechanical ventilation system with heat recovery in a single-family house (140-160m2 (1506-1722 sq ft)) built with T7 bricks?

According to a construction company, they install this only about once every two years, and then only at the homeowner’s request.

I could imagine that with bricks, the wall can "breathe" to some extent and better regulate the relative humidity.

Thanks for your advice.

Goldi09111 schrieb:
What do you think—is it necessary to install a mechanical ventilation system in a single-family house (140-160m2 (1506-1722 ft2)) built with T7 brick?

Necessary for what purpose—to achieve which goal?

Goldi09111 schrieb:
I can more easily imagine that with brick, the wall can "breathe" or better regulate the relative humidity.

Are you referring to moisture issues or the risk of mold? Indoor air quality?

Goldi09111 schrieb:
what do you think, is it necessary,

YES! No matter what... YES! Nowadays, absolutely!

Yes, my concern is about moisture and building damage.

I can only ventilate once a day but don’t want to have the first signs of mold after three months.

@Yvonne, what is the reason? Why are there still so few houses with mechanical ventilation systems?

Goldi09111 schrieb:
Why are there still so few houses with controlled ventilation systems?

Who says that? If you can make sure to properly ventilate every room two to three times a day... fine, but then during the colder months you lose heating energy. The heat has to be generated again by the heating system. Is that really the purpose?

I mention this because I am currently getting to know many homeowners.

As I have already written, I can only ventilate once a day.

It is understandable that the heating energy has to be supplied again, but the additional investment (~10,000?) first has to be used up, right?