My GDF bill amounts to around 1500.00 euros per year for 2 adults and 2 children (less than 3 years).
there are PAC installations that are ecological contrary to what Christophe tell you. With a correct installation of walls and ceiling heating you can decrease this invoice to less than 200 euros / years (2000kw.h).
On the other hand, if you keep your radiators, the heat pumps are pretty bad on the high temperature so solution to put in the trash.
I agree with the others about the insulation: it is useless to find a heating solution as well as it is if you did not first isolated all this bazard.
For christophe
c) the advertised COP is always the best, under laboratory conditions. We never see the term COPA (annualized COP!) Which is what really matters to the user!
d) we never talk about the lifetime of an installation and its maintenance costs (few compressor running 10 h per day exceed 10 years of service life!)
stop making generalities on the PAC based on the big builders as in all the trades are big who hack and who rip and other honest boxes .... it is not on the technology that must be taped but on dishonest people who use it to sell you sea.
I will still redirect you to
http://www.innovert.eu/cop-pompe-a-chaleur-ADEME/resume-des-mesures-ADEME.wee
yes it is a medium cop on the year that they give you and not a lab cop at 7 ° C
the compressor can hold much longer than expected if it is done by compressing for a low temperature differential on low or very low temperature (TBT)
Compressors is not junk just need to know how to optimize their life