Heat pump experiences - assessment?

  • Erstellt am 2022-06-11 11:25:20

motorradsilke

2022-06-12 08:39:31
  • #1


That is not the case everywhere. We have heat pump electricity for about 20 cents/kWh. My son in the same town pays 11 cents/kWh for gas. If you can even get a gas contract at all.
 

Joedreck

2022-06-12 17:36:54
  • #2
It is indeed a matter of flow temperature and energy costs. The rest can be calculated. With my heating circuit, the flow temperature is still too high. I would probably end up with an annual performance factor of 3. But I would need 4 to be on par with gas. Then I have a heating load of 8KW with NAT. The small Geisha again is not sufficient. The investment would therefore currently be too large to be economical. By the way, it was the same for me 5 years ago, otherwise I would have installed underfloor heating back then. Well, so what.
 

Deliverer

2022-06-12 17:47:00
  • #3
You don't have to tear out new gas heaters right away. There aren't even that many [Sanis] and [WPs] available. The important thing is that from NOW ON, no new gas heaters are installed in new buildings or when replacing heating systems. It doesn't matter at all what is most economical at time X. Because we can discuss (not that it would change anything...) whether we need to be climate neutral by 2035, 2040, or only 2045. But not THAT we have to be. So set the course correctly!
 

BungaSeppel

2022-06-13 10:57:34
  • #4
Okay, first of all, many thanks for your participation here.

I think I will try to involve an engineering firm in the renovation planning and have all energy measures + underfloor heating designed towards the best possible annual performance factor.

Then, initially continue heating with the existing, still well-maintained gas boiler and at some point, when it makes sense (e.g., old gas heating breaks down) and after I have gained experience over one or two winters regarding how warm the house is or how our heating behavior settles, switch over!
 

Deliverer

2022-06-13 18:29:55
  • #5
Yep, taking some time and planning well is certainly not wrong. If the defects then pile up, or there is no more gas, switch over.
 

4lpha0ne

2022-06-20 14:57:54
  • #6

This immediately reminds me of a comparison: The up/down behavior is roughly like constantly accelerating and coasting in a low gear with an internal combustion vehicle instead of maintaining a constant speed in a low rpm range.

Regarding heat pumps: As I noticed in more and more conversations with neighbors in identical houses, they have about 80-100% higher consumption with the standard setting from the heating installer. We are around 23 degrees room temperature. So there is still some room for improvement with the setting.
 

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