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| Sorry for changing the idea, but why not a geothermal heat pump? No gas is consumed, only electricity coming from hydro or nuclear energy. If you don't care about CO2 emissions, a lot of cash is saved on fuel anyway. https://www.bfe.admin.ch/bfe/en/home...ient-heat.html | |
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they are too expensive to install, the rebate is not significant enough to pay back within a reasonable time line, you have to have great insulation or it wont work (and you wont qualify for the rebate from your commune) and its suited only really for underfloor heating systems, radiators dont generate enough heat.
Apart from that, they are great.