With underfloor heating, no problem at all. With modern aluminium radiators you should be able to get very low too. Ancient cast iron or chappy steel radiators would admittedly require a higher temperature.
Here are the heating curves/ COP for the unit I'm installing. (Edit as I uploaded the wrong chart)
Also keep in mind annual average air temperature in London is 10.8°c and average temperature in January (coldest month) is 4.8°c...
With underfloor heating, no problem at all. With modern aluminium radiators you should be able to get very low too. Ancient cast iron or chappy steel radiators would admittedly require a higher temperature.
Here are the heating curves/ COP for the unit I'm installing. (Edit as I uploaded the wrong chart)
Also keep in mind annual average air temperature in London is 10.8°c and average temperature in January (coldest month) is 4.8°c...
1 Attachment