I had researched that Bafa only accepts certain manufacturers, e.g. heat pumps
That is correct for Bafa – but applies exclusively to heat pumps. By the way, the list of heat pumps is 200 pages long (estimated 8,000 to 9,000 models). Everyone will find a suitable heat pump, with every current heat pump also being eligible for funding. There are no requirements at KfW.
So definitely get KfW on board for the renovation?
I would put it differently: Definitely get an energy consultant on board. Because they know all funding options and can tell you which programs are the most useful. Why forego funding? And if you eventually achieve an efficiency house XY, you can look forward to a lot of money. P.S. It’s not only the heat pump with underfloor heating itself that is eligible for funding. The following are also funded: - Floor coverings including removing and disposing of screed - Impact sound insulation / insulation - Underfloor heating - New screed - Electrical work for ERR - New parquet flooring etc. For renovation to an Efficiency House 40EE, there is a generous 50% repayment subsidy. For a loan of €150,000 (which you get for one housing unit at most), you receive €75,000 in gifted funding.