ᐅ Building Services for a New 230 sqm Urban Villa

Created on: 24 May 2015 13:48

Hello,

we are building a city villa with 230 sqm (2,476 sq ft), KFW 55 standard. We are planning the following technology:

- Air-to-water heat pump Waterkotte Eco Touch DA 5010, series DA 5018

- with a 225-liter (60-gallon) buffer tank for the heat pump, 390-liter (103-gallon) hot water tank

- Ventilation system Waterkotte Eco Vent

- Photovoltaic system 8.1 kWp “Silver Line Heckert STP8.000TL” with E3/DC S10 E 2Z, 4.6 kWh battery storage

- All underfloor heating, all windows with electric blinds

- Piping prepared for a future water-based pellet stove

Construction site is in Schleswig, 24837.

What do you think, does this setup make sense? It’s difficult to get good advice here, so we would like to ask some “regular” consumers about their experiences.

Thank you very much

MKoni25 May 2015 13:24

@BeHaElJa, I have no experience with the costs. People always say that a heat pump uses a lot of electricity.
The fireplace will be added later anyway for the coziness.

We are 6 people (5 of whom are women or girls).

What should I leave out?

Sebastian7925 May 2015 13:24

Buffer tank and the hydronic fireplace

MKoni25 May 2015 13:53

I’m asking about the buffer tank to find out what it should be like. The fireplace is not relevant at the moment; as mentioned earlier, it is planned for later to create a cozy atmosphere.

Sebastian7925 May 2015 14:23

#10

We also have a fireplace – but it is not water-heated.

MKoni26 May 2015 22:31

#11

Hello, I inquired today about the buffer tank, and it is absolutely necessary. Regardless of the manufacturer, I have received 5 quotes from 4 different manufacturers, and all include a buffer tank, which costs around 500 euros net.

The buffer tank is required to operate the heat pump without it shutting down immediately from full load to zero. It is similar to a car not braking before hitting a wall but driving straight into it. The heat pump can run without a buffer tank, but it involves risks and a much shorter service life. This requirement is not just a preference of the heating system installers but a mandate from the manufacturers.

nordanney27 May 2015 00:03

#12

Buffer tank yes, but only for hot water, not for heating! The buffer tank for the heating system is your house.

P.S. Do you also have a buffer tank for your refrigerator? After all, it’s just a compressor working in reverse...

ᐅ Building Services for a New 230 sqm Urban Villa

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