Such cases have also come to my attention. However, I also hear this from "daredevils" who have a pellet heater as their main heating system. Some have been satisfied for years, others have constant problems. Of course, the "problems" cannot be generalized,
That's right. For every application or idea, there is also a fitting horror story, and usually everyone defends their own model.
With a heat pump, it stands and falls with the skills of the heating engineer and unfortunately also with those of the builder.
That's how I understood it too. However, when building a house with a general contractor, I usually have very little opportunity to specifically influence that. In my case, the builder has no desire at all to deal deeply with the function of his heating system; it should simply work. From earlier times I still remember that people liked to deal with it and optimize it, nowadays I would get a rash from that.
Gas and oil heating systems also ran inefficiently with poorly designed underfloor heating, but this was not reflected in such high costs. At least not directly.
Here in our "transitional home," a floor heating system was newly installed by a reputable specialist company. Laid with about 30 cm intervals, many freezing cold spots, the towel radiator connected directly to the underfloor heating, so of course it never gets warm, etc. We have checked the gas consumption over a few months. It is indeed significantly lower than the owner would like to charge, but it is still far above the amounts sometimes mentioned here. Additionally, hot and cold were switched in the line, etc., in my opinion the whole system here is a mess, which is solely due to the heating installer.
With the heat pump, a room-by-room heating load calculation including an adapted design of the underfloor heating must be made.
I found that out here as well... in retrospect, I have the impression the heating installer did not know that. There is a thermostat in every room, and you are supposed to turn it up or down as needed. Since I didn't have underfloor heating before, this sounded plausible... I was a fool.
Then the heat pump must be properly preset and the user instructed.
Nothing like that here... I also believe the heating installer would interpret the word "properly" differently.
Unfortunately, many heating installers are simply not capable of this. But they won't admit it.
This was presented to us like that in our absence; luckily we will be moving out soon anyway. The installer here didn't really want to, and from what I have read here, he couldn't do it any better.
I am really stunned by what was installed here as "professional" by a specialist company, which is already described here in an amateur forum as a clear failure.
If the requirements are met, you usually have a low-maintenance, comfortable, and affordable heating system.
If I knew a heating engineer or craftsmen in general who meets such requirements, I would do exactly WHAT he recommends. However, I consider this to be probably the biggest challenge when building with a general contractor. Fortunately, we can currently take out some services and assign them ourselves to people whom we at least believe will implement it well. We'll see... :D
What I read here indicates that the installation of poorly adjusted heat pump heating systems is not an isolated case.
That’s all great.
That’s great when it has been installed well and sensibly.
What good are the best datasheets and calculation values if the executing heating installer does not implement this technology appropriately; this is precisely where, in my opinion, the problem lies.