á Compressor failed after 6 years (Ecoforest ground-source heat pump / well construction by Heth)
Created on: 24 Mar 2023 09:38
J
jx7
After 6.5 years, the compressor of our ground source heat pump has failed.
The expected lifespan of such compressors is stated to be 25-30 years.
Has anyone else experienced something like this?
Could the heat pump have been improperly installed, or what might have caused the damage?
Additionally:
The installing company Brunnebau & Erdwärme Heth from Lorsch is refusing to carry out the repair, citing a shortage of skilled technicians.
Overall, no official Ecoforest partner could be found to do the repair; a local heating and cooling company will now handle the repair.
It is an Ecoforest geothermal heat pump (model C3 3-12KW HTR EH) with a Copeland Scroll compressor ZPV36K1E-1E9-130.
Could it be that the 12kW heat pump was oversized for our house? (There are 190 sqm (2045 sq ft) of underfloor heating and domestic hot water for 5 people supplied by the heat pump. The house is built to nearly KfW-55 standard: final energy demand: 21.4 kWh/(m²¡a) / primary energy demand: 51.4 kWh/(m²¡a) / building envelope thermal quality: 0.25 W/(m²¡K)).
The expected lifespan of such compressors is stated to be 25-30 years.
Has anyone else experienced something like this?
Could the heat pump have been improperly installed, or what might have caused the damage?
Additionally:
The installing company Brunnebau & Erdwärme Heth from Lorsch is refusing to carry out the repair, citing a shortage of skilled technicians.
Overall, no official Ecoforest partner could be found to do the repair; a local heating and cooling company will now handle the repair.
It is an Ecoforest geothermal heat pump (model C3 3-12KW HTR EH) with a Copeland Scroll compressor ZPV36K1E-1E9-130.
Could it be that the 12kW heat pump was oversized for our house? (There are 190 sqm (2045 sq ft) of underfloor heating and domestic hot water for 5 people supplied by the heat pump. The house is built to nearly KfW-55 standard: final energy demand: 21.4 kWh/(m²¡a) / primary energy demand: 51.4 kWh/(m²¡a) / building envelope thermal quality: 0.25 W/(m²¡K)).
There were studies where split systems and single-unit air conditioners were subjected to aging tests, and if I remember correctly, the compressors failed after between 50,000 and 100,000 starts... With 3,000 starts per year, which would be a lot, the compressor would still last about 17â18 years, and then only the outdoor unit would be faulty. So I donât see this as a major issue.
As for the foot-level warmth, I can only disagreeâour supply temperature is 23°C (73°F)... my partner complains that they would like warmer feet.
As for the foot-level warmth, I can only disagreeâour supply temperature is 23°C (73°F)... my partner complains that they would like warmer feet.
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NatureSys25 Mar 2023 12:54Bausparfuchs schrieb:
In summary, you can say this about heat pumps: expensive to install, costly to maintain, and only effective with complex heating systems like underfloor heating. Personally, I don't like underfloor heating at all. Apart from the bathroom, I don't have it anywhere. I find the constant warmth on my feet uncomfortable. It is also slow to respond.Constant foot warmth only occurs at high supply temperatures. In our case, the floor does not feel warm.
W
WilderSueden25 Mar 2023 15:47Yes and no. I can definitely feel the difference when I walk barefoot from the heated hallway into the unheated bedroom. Both have wooden flooring. Of course, the tiles donât feel really warm either, which isnât surprising given the 30°C (86°F) supply temperature.
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Bookstar8725 Mar 2023 22:07Reggert schrieb:
I can only disagree with the idea of warm feet; our supply temperature is 23°C (73°F)... my better half complains that she would like warmer feet 😉 Well, letâs not exaggerate. In winter, with subzero temperatures, youâll definitely have a supply temperature not of 23°C (73°F) but rather between 27 and 32°C (81 and 90°F). And then you can feel that the tile floor is warm. But itâs very comfortable and not comparable to floor heating systems in houses from the 1990s.
Regarding the heat pump: maintenance depends on the manufacturer and is not always mandatory. I have a Novelan, and for the warranty there is no required maintenance like with a car. Basically, almost nothing is done because itâs maintenance-free.
Your start numbers are intense. I have 8,000 over 5 years, which is also a lot, because in the first year, without optimization, I had 4,000.
jx7 schrieb:
The warranty period is already over anyway. Even if we had performed regular maintenance, we would no longer have any warranty.With maintenance, however, you might not have had a broken compressor, since a technician probably would have noticed the high number of starts.kati1337 schrieb:
With regular maintenance, you probably wouldnât have had a broken compressor, since a technician would likely have noticed the high number of starts. We did perform maintenance, but then no further maintenance afterwards. This should have been noticed during the first maintenance.
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