But hardly anyone uses 60 degrees in the single-family house sector. Most heat pumps, however, go up to 60 degrees - without an electric heating element.
And if a heat pump needs the electric heating element at -10 degrees outside temperature, something went wrong with the planning. Normally, you can simply turn off the electric heating element (except in exposed locations like low mountain ranges) - I did that too (it only switches on for defrosting).
The heat pumps that can do this are completely normal standard devices. You don't need high-tech devices for that. My 3,000€ heat pump also manages this without problems (60 degrees flow temperature + -20 degrees outside temperature without electric heating element).
But I still don't understand. If you operate the heat pump with a 60-degree flow temperature, isn't that an energy disaster?
I also own a small multi-family house (2 large apartments built in 1972 and 3 apartments built in 2004). There is an oil heating system from 2004 installed there, which I also want to replace. There is, of course, no underfloor heating anywhere, only relatively large panel radiators. Would a heat pump be sensible here? Possibly with what kind of auxiliary heating? The boiler was replaced this year for 3,000 euros. Do I need that for a heat pump too? Sorry for my amateur questions.