ᐅ What annual electricity consumption should I specify in the energy contract?
Created on: 9 Jun 2017 10:21
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BigFlow
Hello,
we will have two separate meters: one for the regular household electricity and one for our heating system. This consists of:
- Air-to-water heat pump with an outdoor unit for underfloor heating
- Exhaust air heat pump with a 200-liter (53-gallon) water tank for domestic hot water
- 150 sqm (1,615 sq ft) of usable space
When setting up the new electricity contracts, I would indicate 3000 kWh for household electricity (which has been roughly the consumption so far). For the heating electricity, I am unsure. I was thinking of 5000 kWh. Do you think that will be enough, or should I set it higher from the start? There are many varying reports on the consumption of such systems, so I prefer to estimate on the higher side to avoid unexpected additional charges.
Regarding these special heat pump tariffs with time-of-use restrictions, has anyone experienced the problem of suddenly running out of hot water while showering?
Thank you in advance.
Florian
we will have two separate meters: one for the regular household electricity and one for our heating system. This consists of:
- Air-to-water heat pump with an outdoor unit for underfloor heating
- Exhaust air heat pump with a 200-liter (53-gallon) water tank for domestic hot water
- 150 sqm (1,615 sq ft) of usable space
When setting up the new electricity contracts, I would indicate 3000 kWh for household electricity (which has been roughly the consumption so far). For the heating electricity, I am unsure. I was thinking of 5000 kWh. Do you think that will be enough, or should I set it higher from the start? There are many varying reports on the consumption of such systems, so I prefer to estimate on the higher side to avoid unexpected additional charges.
Regarding these special heat pump tariffs with time-of-use restrictions, has anyone experienced the problem of suddenly running out of hot water while showering?
Thank you in advance.
Florian
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Peanuts744 Aug 2017 11:27BigFlow schrieb:
Hmm, whether this makes economic sense, I might be able to tell you after a few winters 😉
This combination was simply what the developer offered for all the townhouses, so we couldn’t choose anything else. Naively, I suppose that in winter the outdoor unit only has to supply the 35°C (95°F) flow temperature for the underfloor heating, and since the exhaust air heat pump receives the heated air, it can operate more efficiently.Do you live on Mount Everest or why do you need a 35°C (95°F) flow temperature?
Peanuts74 schrieb:
Are you living on Mount Everest or why do you have a 35-degree Celsius (95°F) flow temperature?Since I can leave the house in the morning without an oxygen mask, I’d say no, we’re not living on Mount Everest.
The 35-degree Celsius (95°F) flow temperature is specified in our heating load calculation. I’m not familiar with this myself and have to trust the person who prepared this calculation for now. When winter comes, if it turns out to be complete nonsense, I’m of course grateful for any tips to improve it.
That works, but it’s not exactly economical. The goal is to keep the supply temperature as low as possible, so the heating pipes are installed closer together. However, that would be a bit more expensive in terms of investment, so why not let the customer cover the cost later through higher electricity bills?
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