Heat pump in new building without photovoltaic system

  • Erstellt am 2020-05-03 00:27:52

Bookstar

2020-05-03 16:29:32
  • #1
Unfortunately, I have to correct a few things.

1) Refrigerator, I like the comparison. Those things also tend to break down a lot and make noise. Besides, they consume a lot of electricity.

2) With gas, I don’t need a wood stove. It also has nothing to do with the floor heating. I can gladly run it with higher flow temperatures. It makes a huge difference whether it is 26 degrees or 31 degrees.

3) Even a heat pump should receive annual maintenance, which often costs around 250 euros. Whether you do it yourself is another story, but that’s the manufacturer’s recommendation, which sometimes must be followed for the warranty (depending on the manufacturer).

4) The investment in a heat pump is higher than for a gas heating system, despite the collector obligation. Unless you install a Geisha yourself, but that is probably rare among home builders.

I must vehemently disagree with the last paragraph. The forums are full of this. The heating technicians switch on the system and that’s it. No regulation of the heating curve, etc., takes place. Hydraulic balancing is usually done, but without the rest it brings little.

The result is electricity consumption as you find in masses on the internet. I adjusted my heat pump myself and thus reduced electricity consumption by 50%. But not everyone can do that or has the patience. With gas, that’s not necessary.

Our air-to-water heat pump now runs very well, I can’t complain. Relatively quiet, reasonably economical and trouble-free. Still, with gas I would have saved a lot and saved a lot of money. Unfortunately there is no connection here, and liquid gas was never an option because of the tank.
Heat pumps were popular in the 80s, now they are again. And I firmly believe that they will soon disappear from the market again. Because they are neither ecologically nor economically sustainable.
 

hausnrplus25

2020-05-03 21:47:48
  • #2
Um, well the discussion is quite amusing and maybe helpful in some aspects, but overall it has already been discussed X times in the forum (with the same result as here) and unfortunately completely misses the point of the thread starter's question. He does not want a gas heating system, but rather he is asking about the advantages and disadvantages of a photovoltaic system with a heat pump.

?!
 

Bookstar

2020-05-03 22:20:15
  • #3
Okay is easy to answer, photovoltaic with heat pump is great. But not a requirement.
 

Denk_Mal19

2020-05-04 14:34:06
  • #4
Heat pumps are now technically mature and operate reliably - excessively high electricity consumption is often caused by faulty system planning and execution.
And heat pumps have another advantage: In summer, they can be used actively or passively to cool the house and keep temperatures in a comfortable range even during extended heat periods.

By the way, the advantages of the low gas price will be gone in a few years. Then saving with a gas boiler will be over. Starting in 2021, CO2 pricing will increase in stages, and if Germany adopts the pricing of other countries/pioneers (€120.00 per ton), the gas price will be 80% higher than today's level by 2035!!! Where is the saving effect then?

So my tip and experience: heat pump + photovoltaics is the optimal solution. Don’t save in the wrong place here!
 

T_im_Norden

2020-05-04 15:24:31
  • #5
Can you quickly lend me your crystal ball?

Back then, when night storage heaters were promoted and subsidized with special tariffs, it was also said that this would be the optimal solution.

Whether it is the optimal solution has to be calculated by each individual and also depends on the assumptions made about the price development of gas/electricity, whether the 52 GW cap will be lifted, and whether the expensive smart meters are mandatory.
 

nordanney

2020-05-04 16:05:37
  • #6

Let’s leave the other points out for now. How do you "just quickly" get your place from 20 to 24 degrees with gas heating (with underfloor heating)? For that, you have to bring the entire screed in the living area up to 24 degrees. And "just quickly" back down to 20 degrees again (sure, with windows constantly open that works well and economically in winter)?
 

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