Last seen: Feb 24, 2023
@cathoderay do you have neighbours with similar buildings for their annual heating energy usages? in case the oil figures is some how off?
@yogabob i agree the manufactures COP calculation are only aproximate, but for Vaillant at least, they don't quote heat delivered they quote the '...
@cathoderay this sound like a nightmare. the heat delivered must be wrong, there are reasons for 20% increase in requirements, weather, losses out ...
@cathoderay I agree this is difficult and I have asked those on the open energy monitor forum to compare vaillant reading and their heat meter reading...
@dangermousie I have only the vr700 I think it's called which is the weather comp unit and the main vaillant controller. I don't have the sensocofort ...
@dangermousie good idea to have fresh set of eyes on your install by getting Vaillant to do a service. Although my physical install was pretty compete...
@cathoderay I found the design calculations from all heat pump installers were huge for us. When checked against our gas usage for the previous year a...
What you describe is mentioned in the book Heat Pumps for the Home by John Cantor. Essential reading for a heatpump geek! Page 51 has a thermal ...
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