Is A strictly better than B no matter what?
I've read somewhere that A rated windows use solar energy to increase heat inside the house however if the house doesn't get much sun is it pointless to get A rated windows?
The issue I see with that is that B rated windows lose 6 kWh/m2/per year whereas A rated windows gain 2 kWh/m2/per year. If you dont get good sun does that mean A rated windows wont perform at 2 kWh/m2/per year and you may still end up losing energy?
Thanks
I've read somewhere that A rated windows use solar energy to increase heat inside the house however if the house doesn't get much sun is it pointless to get A rated windows?
The issue I see with that is that B rated windows lose 6 kWh/m2/per year whereas A rated windows gain 2 kWh/m2/per year. If you dont get good sun does that mean A rated windows wont perform at 2 kWh/m2/per year and you may still end up losing energy?
Thanks