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 11:07nordanney schrieb:
You should get rid of that. After subsidies, it should be suitable for the heat pump—unless you install the heat pump yourself. But as I said, the materials alone already cost around €10,000 (no subsidies then).
Which subsidy are you referring to for photovoltaics? Solar thermal is common, of course.
Photovoltaics should be considered independently of the heat pump. Roof fully covered—what options do you have? A 10 kW system should cost about €12,000.I need to discuss this with the roofer, who is coming anyway in the next few weeks for a repair. I can’t really judge; it’s a three-sided hip roof with roof windows, so we’ll have to see what fits.
We actually wanted to move away from gas, but we’ll only do that if it’s reasonably affordable.
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nordanney4 Mar 2024 11:17Winniefred schrieb:
I need to discuss this with the rooferNo. Find some offers from suppliers first. Give them your roof shape/areas and you will get proposals. A hip roof is very suitable for the plot because of its orientation. The roofer is not the right contact for this.
Winniefred4 Mar 2024 11:20nordanney schrieb:
No. You should get quotes from suppliers first. Give them your roof shape and area, and they will provide suggestions. A hipped roof is actually very suitable for the plot due to its orientation.
The roofer is not the right contact for this. At first, it is about the question of the areas, and I don’t know them; you can’t really estimate that. He once said he would calculate around €10,000 (about $11,000) for us. I will ask him if he can roughly measure the roof for us.
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