The best part is the low flow temperature for the radiators so my cat finds it comfortable to sleep directly on top of them. On the day it was powered on they set it to like 26°c in the middle of december, partly to test it and also a benefit was that the house had been left empty and unheated for months so drying stuff out was helpful. It managed to get the house up to that temperature without any problems.

Bonus: It blows cool air over my garden so in summer when using the BBQ I can sit in the cool breeze if someone uses enough hot water to get it to turn on. Gives a good reason to do some washing up.