Experiences with brine heat pump

How long does such a processing usually take?

We would not commission our general contractor with this, but probably an external company.

The application must be submitted before commissioning - as far as I can remember, however, you do not have to wait for the funding approval to start. The payout takes forever and three years (~7 months it took for us) So it's best if you just call BAFA - they have even set up a special hotline for this now.

Ok, thanks for the hints. I will then get in touch with the BAFA.

I need an assessment of concrete numbers...

The credit for the air-water heat pump is approximately 7,000 EUR.

Your subsidies amount to 5,250 EUR (4,000 EUR BAFA heating, 500 EUR BAFA drilling, 750 EUR city utilities heating). That makes a total of +12,250 EUR.

There is an offer for a Tecalor TTC Sole heat pump and drilling for a capacity of 5.7 kW -> 18,500 EUR all inclusive.

That means there is a difference of 6,250 EUR. That is quite a "considerable" difference. It will certainly take several years for this to amortize – or what do you think?

Many here have already received such a ground-source heat pump and thus also received an offer, so the price seems justified?

Many thanks for the support.

Price including installation and piping etc. seems okay. With a difference of 30 € per month (just a rough, not too absurd number) that would be 17 years. However, the borehole will last you significantly longer than the heating does. You have to keep that in mind. I would do it, I think – at least if the budget hasn’t been blown yet by the nice corner bathtub with [Whirlpoolfunktion]

Hehe - You obviously know me too well already.

Yes, I simply estimated the difference at about 30 EUR. That is correct - the drilling is definitely for the long term, but whether a heating system today will last another 17 years!? I just dare to doubt that.
One could also mention the advantage of the lower noise level of a brine heat pump, but whether this upgrade is worth it?
As you already said, the budget is unfortunately coming to an end.

The air-to-water heat pump certainly doesn't last longer than a brine heat pump (rather shorter, since there are more components, e.g., the fans, etc.), and the brine heat pump itself is not the expensive part, but the drilling.

from on the go