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| What is the real story around heat pumps? |
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| tszaboo:
--- Quote from: Siwastaja on February 26, 2024, 06:21:16 pm --- --- Quote from: tszaboo on February 26, 2024, 06:12:13 pm ---Yes, because brushing off issues like the OP's issue (who is btw from the Netherlands) --- End quote --- .. whose house is in France and it DOES have underfloor heating lack of which you are complaining about so your game is now exposed, you did not care about helping the OP the slightest bit, you did not even read any of the OP's posts unlike me and others. You are here just trolling and spoon feeding your own case disguised as some sort of advice for others. Now enjoy the actual ignore list because it seems I can't resist replying to dishonest people like you. --- End quote --- Oh no, I've been find out. I'm actually paid by big gas(?) and big district heating. Not someone who was actually interested in this technology, until I've been presented the shortcomings of the technology and calculated the costs of it for myself about a year and a half ago. And didn't see one particular post in 15 pages filled with wall of text. I clearly have an agenda here, good thing you have it all figured out. |
| pcprogrammer:
--- Quote from: Siwastaja on February 26, 2024, 06:21:16 pm --- --- Quote from: tszaboo on February 26, 2024, 06:12:13 pm ---Yes, because brushing off issues like the OP's issue (who is btw from the Netherlands) --- End quote --- .. whose house is in France and it DOES have underfloor heating lack of which you are complaining about so your game is now exposed, you did not care about helping the OP the slightest bit, you did not even read any of the OP's posts unlike me and others. You are here just trolling and spoon feeding your own case disguised as some sort of advice for others. Now enjoy the actual ignore list because it seems I can't resist replying to dishonest people like you. --- End quote --- :-DD :-DD :-DD You got to love a good fight. Still waiting for the second set of quotes. I'm very curious as to what they are going to offer for air to water in terms of output power, and what the price will be for the complete job. What I know so far is that they mainly use Mitsubishi Electric for air to water with split units, so the pipes running to the outside unit hold the refrigerant and not the central heating water. This means they have to fill it with the gas themselves. In France there is a certification for heat pump installers called "Qualipac" and "certifRGE" so there is some reassurance that the ones we invited are not telling total porkies. >:D Also keen to see which brand they will offer for the geothermal system. If they do a proper job and really perform calculations on the house based on what we told them about insulation and the measurements they did it should be in range with my own findings based on previous energy usage. For the geothermal a big portion of the expenses are the drilling of the holes. Unfortunately not a lot of companies around here do that kind of work. We just have to wait and see what they come up with. |
| Siwastaja:
Panasonic also makes some quite decent air-to-water heatpumps, both monoblocks and splits. They do more conservative ratings than most others on the market so you basically know that unit rated for x kW nameplate thermal also provides it even at -15degC or so, making them more cost-effective than they first appear compared to the Chinese ones. I'm happy with my Chinese thing though but Panasonic was on my list of options and not much more expensive if at all. I believe they are somewhat cheaper than Mitsubishi Electric but not sure. |
| pcprogrammer:
--- Quote ---The bigger ones, say over 5kW claimed output, are better (more reliable) with a 3 phase compressor. --- End quote --- Is there a difference in life expectancy and reliability between tri phase and single phase models? For what I have seen of the De Dietrich models there is no difference in price between them. Don't know about other brands. |
| coppice:
--- Quote from: Siwastaja on February 26, 2024, 07:58:11 pm ---Panasonic also makes some quite decent air-to-water heatpumps, both monoblocks and splits. They do more conservative ratings than most others on the market so you basically know that unit rated for x kW nameplate thermal also provides it even at -15degC or so, making them more cost-effective than they first appear compared to the Chinese ones. I'm happy with my Chinese thing though but Panasonic was on my list of options and not much more expensive if at all. I believe they are somewhat cheaper than Mitsubishi Electric but not sure. --- End quote --- My experience has been that Panasonic units are OK when new, but don't offer the lifetime of a Mitsubishi or Daikin. Which Chinese unit do you have? Some are really sophisticated, and high performance, which some are still pretty crude. People like Gree have put serious effort into making world class heat pumps, but that doesn't say much about their lifetimes. They don't have the kind of long track record of Mitsubishi or Daikin. |
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