I have a warmtepomp -- it's great, but it is cooling the house, not the air a only gets it to 5 day degrees down. It's mandatory for new houses in Amsterdam I think and there seem to plans to retrofit old buildings. It helps that we also produce it, but the usual types tried to sabotage that too last time.

As a native English speaker, I love how some Dutch terms are clearly understandable to me without knowing Dutch, “warmtepomp” is a wonderful word :)