raymon wrote:I forgot the cop is 4.76 to 7 ° and 3.8 to -7 ° So you will consume about 3-4 times less! More "profitable" than over-insulation but it remains nuclear.
Did you measure or trust blindly the instructions?
For my part I start having some doubts with the one I just installed here: https://www.econologie.com/forums/chantier-d ... 39-90.html
As soon as I put my hand on my anemometer I would make an estimate of the actual COP!
When the pump consumes 500W it looks like it does not return much more 800 1000W but it is for the moment, a feeling impression ... the measures will speak more true!
Edit: ayé I found it !! I'm doing the measurements!