Building a well insulated house means you will need
installs a ventilation system with heat recovery saving
you about 90% of heating and cooling costs compared to just ventilating.
consists of 2 fans: one to extract the stale air out of the house and
to bring fresh air in. Both airflows pass a turning wheel equipped with
special filter material that in winter captures
the heat out of the outgoing air and transfers it to the incoming air.
The material also takes care of filtering the incoming air.
works the other way around and cools down the incoming air using the
cold air coming from inside the house. The system is also used to cool
house at night, when the outside temperature is warmer than the