Hello everyone,
So far, our house design has been officially certified by the architect as KfW 70 standard.
However, there are now some changes: a ground source heat pump instead of a gas/solar system, a controlled ventilation system with heat recovery (previously none was planned), and 0.5 glazing instead of 0.7 glazing.
Could these changes affect the KfW rating? Since the architect is currently on vacation for three weeks, I’m unable to ask him =(
Best regards
So far, our house design has been officially certified by the architect as KfW 70 standard.
However, there are now some changes: a ground source heat pump instead of a gas/solar system, a controlled ventilation system with heat recovery (previously none was planned), and 0.5 glazing instead of 0.7 glazing.
Could these changes affect the KfW rating? Since the architect is currently on vacation for three weeks, I’m unable to ask him =(
Best regards
N
nordanney22 May 2013 08:53Wastl schrieb:
But the energy consultant will have done that already. Yes, he calculated that. But even without meeting the KFW 55 standard, we would still install a small photovoltaic system on the roof, as it pays off through self-consumption (and I believe even more so in the future).