ᐅ Ground source heat pump / underfloor heating

Hello everyone,
I have a question. Over the weekend, we visited a single-family house that was built in 2004.

It has a ground source heat pump, underfloor heating on the ground floor, and "regular" radiators on the first floor.

We took the opportunity to look into the heating system and found that using "regular" radiators is not ideal for the ground source heat pump.

Does anyone have experience with this?

If this setup is quite disadvantageous, we wonder whether retrofitting would be possible without issues and how much it might cost for about 65 m² (700 sq ft).

Best regards, Jenny

Heat pumps require low supply temperatures to operate as efficiently as possible. Underfloor heating systems are well suited for this, but there are also low-temperature radiators available.
Installing a hydronic (water-based) underfloor heating system afterwards is almost like a major renovation – it’s impractical.

In the end, it doesn’t really matter to you. Just ask for documented energy costs and decide whether that is acceptable for you.

Thank you for your response.
So, the running costs are 800 euros per year. That doesn’t seem like much to us, but according to the owners, they don’t need it warm upstairs. In the bathroom, I would like it to be warm in the morning before getting into the shower. 🙂