And btw: you don’t need to reach 60°C with a heat pump. That would be pretty inefficient.

Thanks for the feedback.

My boiler gives me control of the temp of the water running through the radiators which is independent of the room air temp thermostat. I set the water to ~55°C which seems to reasonably get the air to 17° without running continuously. I mentioned 60° because I figured that temp would enable someone to heat their room up quickly. I wonder why you say a heat pump would not need 60°. I would think the radiators need to reach a high temp like ~50—60° regardless of the kind of furnace. Maybe I’m doing something inefficient. Should I use a lower temp? I could lower the water temp but then there would be a point where the furnace has to run continuously which i would think is inefficient. I’m not sure how to find the efficiency sweet spot.

UPDATE

That pricetag is just the unit and standard installation probably. Pieces are crazy high Here in Germany because the demand is crazy high. Not many heating installers have made the additional qualifications, so those who did can demand practically anything.

Sounds reasonable. So if the demand has out-stripped supply on heat pumps, I wonder if geo-thermal would actually be cheaper than a heat pump ATM. IIRC the digging would be ~€10k (what I think is a typical price for digging a well.. could be off). Though I don’t suppose you could use wall radiators with geothermal. Since geothermal water is only ~6° warmer in the winter, hydro-radiant flooring would have to be installed.