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AndreasPlü27 Apr 2016 20:13Hello experts,
one of many questions: What is more economical, an air source heat pump or a gas boiler? It’s just one of many points we hardly understand.
We were considering a photovoltaic system with an air source heat pump, but it seems clear that usually, the sun shines the least when you need heating the most.
Is the good old gas boiler actually more economical after all?
Thanks!
one of many questions: What is more economical, an air source heat pump or a gas boiler? It’s just one of many points we hardly understand.
We were considering a photovoltaic system with an air source heat pump, but it seems clear that usually, the sun shines the least when you need heating the most.
Is the good old gas boiler actually more economical after all?
Thanks!
It always depends somewhat on the insulation standard of the house and the average winter cold (objective, not how it feels to you).
The warmer the climate and the better the insulation, the more suitable an air-to-water heat pump becomes.
Installing photovoltaic panels is an option.
The warmer the climate and the better the insulation, the more suitable an air-to-water heat pump becomes.
Installing photovoltaic panels is an option.
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Che.guevara27 Apr 2016 21:45I would also consider aiming for KFW 55;
in that case, more likely an air-to-water heat pump; otherwise, solar thermal.
In both cases, controlled mechanical ventilation is necessary.
If not KFW, then probably gas.
in that case, more likely an air-to-water heat pump; otherwise, solar thermal.
In both cases, controlled mechanical ventilation is necessary.
If not KFW, then probably gas.
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Bieber081528 Apr 2016 07:04AndreasPlü schrieb:
We had considered photovoltaic panels with an air source heat pump, but it’s clear that usually the sun shines the least when you actually need heating. Just leave out the photovoltaic system—that already saves a lot of money.AndreasPlü schrieb:
Isn’t a good old gas heating system more cost-effective? Possibly, but regulations might then require you to take other costly measures. Also, with a heat pump, you can avoid a gas supply connection to the house.For us, the air-to-water heat pump is more economical (of course you can only really know after 10 to 20 years, but based on current assumptions, that’s the case). We are building a KfW70 house in central Germany.
I would be hesitant with an air-source heat pump (air-to-air heat pump) because underfloor heating is not possible with that. If I were to choose a heat pump, I would prefer an air-to-water heat pump (air-to-water heat pump). Currently, the gas solution is probably the most economical option. But who knows what raw material prices will be in the future?
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