ᐅ Fresh water station and buffer tank: a technically better choice?

Created on: 23 Feb 2020 08:16
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freisinger
We have now decided on a ground-source heat pump. Two heating installers have offered different technical options:
1. Alpha Innotec heat pump with a 400-liter (105-gallon) domestic hot water storage tank and no buffer tank
2. Alpha Innotec heat pump with a fresh water station and a large 800-liter (210-gallon) buffer tank

Which option is preferable, or how can I evaluate the advantages and disadvantages?
Mycraft23 Feb 2020 12:42
Definitely version 1.
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Tego12
23 Feb 2020 13:54
Absolutely number one
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freisinger
23 Feb 2020 14:16
Could someone please provide me with a brief explanation in 1-2 sentences? It seems to be clearly number 1.
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Daniel-Sp
23 Feb 2020 18:26
An 800-liter (210-gallon) heating buffer tank is a no-go with a heat pump.
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al3x_
23 Feb 2020 22:05
Daniel-Sp schrieb:

An 800-liter (210-gallon) heating buffer tank with a heat pump is a no-go.
I would also be interested in the reasoning behind that.
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nordanney
23 Feb 2020 22:34
If you can answer the question "Why do I need 800 liters (210 gallons) of heating buffer when I already have 40,000 kg (88,000 lbs) of screed heating buffer (or however much)?" choose option 2. Otherwise, choose option 1.