ᐅ Costs for Heat Pumps and Photovoltaic Systems in Small Older Homes in 2024
Created on: 29 Feb 2024 17:33
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Winniefred
Hello,
we plan to equip our old building with a heat pump and photovoltaic system by 2028. Currently, we heat with gas and have a consumption of about 7,000 kWh/year. The gas heating system was installed in 2010. Since the end of 2023, we also have solar thermal panels on the facade, but I cannot yet say how much energy they save. The house has 88 m² (947 ft²) spread over 3 floors, was built in 1921, the facade insulation dates from 1993, the insulation towards the basement is from 2023, and the roof insulation was done in 2017. The roof is a hipped roof with three sides: one facing southeast, one south, and one southwest, receiving sunlight from early to late. We left space there for a photovoltaic system, which is why the solar thermal panels are mounted on the south facade. On the ground floor (about 37 m² (398 ft²)) we have underfloor heating, and on the other two floors radiators from 2017.
Many of you have good expertise with heat pumps. What would you roughly estimate currently in 2024, and what type of system would be generally suitable here? We need to plan this long term, so we would appreciate a rough estimate. Our plumbing company is completely overloaded and we are not very satisfied with them; therefore, we do not want to consult them. Since the project will not begin for several years, I do not want to involve another company at this stage.
I understand that many details are still unclear. Nevertheless, I would appreciate any responses.
we plan to equip our old building with a heat pump and photovoltaic system by 2028. Currently, we heat with gas and have a consumption of about 7,000 kWh/year. The gas heating system was installed in 2010. Since the end of 2023, we also have solar thermal panels on the facade, but I cannot yet say how much energy they save. The house has 88 m² (947 ft²) spread over 3 floors, was built in 1921, the facade insulation dates from 1993, the insulation towards the basement is from 2023, and the roof insulation was done in 2017. The roof is a hipped roof with three sides: one facing southeast, one south, and one southwest, receiving sunlight from early to late. We left space there for a photovoltaic system, which is why the solar thermal panels are mounted on the south facade. On the ground floor (about 37 m² (398 ft²)) we have underfloor heating, and on the other two floors radiators from 2017.
Many of you have good expertise with heat pumps. What would you roughly estimate currently in 2024, and what type of system would be generally suitable here? We need to plan this long term, so we would appreciate a rough estimate. Our plumbing company is completely overloaded and we are not very satisfied with them; therefore, we do not want to consult them. Since the project will not begin for several years, I do not want to involve another company at this stage.
I understand that many details are still unclear. Nevertheless, I would appreciate any responses.
Winniefred4 Mar 2024 09:56nordanney schrieb:
From the contractor, of course, only the heat pump. Then also the photovoltaic system depending on size and with or without storage. But that won’t be subsidized either.
Yep, 33er (unknown unit) installed for a total of 500€ (?) and that’s it.And roughly, what would additional costs for a photovoltaic system be here? I assume for our needs it wouldn’t have to be very large and probably shouldn’t be, since although we have a very sunny roof, there is limited space on all three sides. Small house, small roof, and there are roof windows as well. 20,000€ just for the heat pump before subsidies seems very high to me – I would have expected it to be much less.
Winniefred schrieb:
20,000 just for the heat pump before any subsidies seems very expensive to me – I would have expected significantly less. It is. In my opinion, it's too much, but I'm not an installer. The material costs are less than half of that, and the labor for a monoblock system can't be that extensive. Once I install it myself at the end of summer, I’ll be able to judge better. Regardless, this is probably the price that installers will charge.
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nordanney4 Mar 2024 10:39dertill schrieb:
It is. In my opinion, it's too much, but I'm not a plumber. The material costs are less than half, and the labor time for a monoblock system can’t be that high. When I install mine by the end of summer, I’ll be able to judge better. Regardless, this is probably the price installers will quote.Material costs being about half could be accurate. But then you also have core drilling, laying pipes, removal of the old gas heating system, the contractor’s profit, and the contractor’s costs for warranty, business operations, etc.When you look at the majority of quotes, which end up in the range of €35,000–50,000 (about $38,000–54,000), €20,000 ($22,000) is actually quite good.
P.S. 1: The new monoblock units from Pana actually consist of an indoor and an outdoor unit. It’s now somewhat more complex.
P.S. 2: My heat pump from 2021 was all in for under €5,000 ($5,400), including my own labor (heat pump, piping up to the thermostatic radiator valves, 300-liter (80-gallon) hot water storage tank, expansion vessels, foundations for the heat pump, etc.). That’s how prices are developing...
Winniefred4 Mar 2024 10:53As of today, photovoltaic systems can at least be subsidized through the Bafa program. We also received a 25% subsidy for the heating system. But of course, the question remains what you should roughly budget for. I was actually hoping to keep the costs for a heat pump plus photovoltaic system under €15,000 (about $16,000).
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nordanney4 Mar 2024 11:03Winniefred schrieb:
At least for now, photovoltaic systems can be subsidized through the Bafa program. We also received a 25% subsidy for the heat pump. But of course, the question remains what costs one should roughly expect. I had actually hoped to keep the combined costs for the heat pump and photovoltaic system under €15,000. You should reconsider that. After subsidies, the heat pump should be affordable—unless you install the heat pump yourself. But as I said, the materials alone already cost around €10,000 (though in that case, no subsidy applies).
Which subsidy for photovoltaic systems do you mean? Solar thermal systems are the usual standard.
Photovoltaic systems should be evaluated separately from the heat pump. If the entire roof is available—what is possible at your place? A 10 kW system should cost around €12,000.
Winniefred4 Mar 2024 11:03Ok, just checked... There are actually no longer any subsidies for photovoltaic systems. Only a low-interest loan is available through the KfW.
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