Report
Sources partly disagreeIn short
For a house from 1962 a heat pump usually pays off if a few radiators are replaced and the roof is insulated.
Running costs
Expect €1,100 to €1,600 of power a year on a heat pump tariff. An old gas boiler currently costs more at similar use.
Purchase and funding
The purchase costs €25,000 to €35,000, of which up to 70 percent can be funded. The exact amount depends on income.
What stays open
The sources disagree on how efficient old radiators are. A heat load calculation on site settles it most reliably.