ᐅ From what point does it become worthwhile to install a heat pump in an older building?
Created on: 28 Feb 2022 13:14
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bestaik
Hello,
In an older building, there is currently an oil heating system that is planned to be replaced with a new heating system. The question is whether a heat pump is worthwhile, as it is subsidized at 45%, correct?
Therefore, the question is whether it makes sense to invest in it. Here are the details of the house:
Of course, we plan to install underfloor heating. Given the information above, does a heat pump make sense at all? Or would it be better to opt for a gas heating system?
In an older building, there is currently an oil heating system that is planned to be replaced with a new heating system. The question is whether a heat pump is worthwhile, as it is subsidized at 45%, correct?
Therefore, the question is whether it makes sense to invest in it. Here are the details of the house:
- Solid construction from 1970
- Basement: fully cellar, ceiling height 201 cm (79 inches), exterior insulating coating, 11.5 cm (4.5 inches) solid sand-lime brick 1.8/250
- Ground floor/attic: 11.5 cm (4.5 inches) solid sand-lime brick 1.8/250, 2 cm (0.8 inches) expanded polystyrene, 17 cm (7 inches) sand-lime brick 1.4/150
- Roof: collar beam roof with concrete tiles, insulation also present
Of course, we plan to install underfloor heating. Given the information above, does a heat pump make sense at all? Or would it be better to opt for a gas heating system?
Deliverer schrieb:
If you don’t plan to leave several rooms unheated at the same time (which is generally not recommended), you don’t need a buffer tank. This saves thousands right from the installation and just as much over the lifespan.Well, sometimes it’s enough to heat only the ground floor and not the upper floor. That saves a lot, and the temperature upstairs is still sufficient.
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Deliverer12 Apr 2022 20:46Yes... no... maybe. Probably not. Slightly cooler is okay. It shouldn’t be completely turned off. On one hand, heat from the ground floor will rise to the upper floor (through the ceiling). This causes discomfort on the ground floor, the supply temperature has to be increased, and any potential savings are (possibly more than) lost.
Also, if the two floors are not separated with reasonably airtight barriers, mold problems can occur quickly. (Warm, moist air rises and condenses in cold corners of the rooms.)
If you partially close the heating circuits upstairs and maintain 17°C (63°F), that works. The heat pump won’t have flow issues, and everything is fine again.
Also, if the two floors are not separated with reasonably airtight barriers, mold problems can occur quickly. (Warm, moist air rises and condenses in cold corners of the rooms.)
If you partially close the heating circuits upstairs and maintain 17°C (63°F), that works. The heat pump won’t have flow issues, and everything is fine again.