ᐅ Possible House Purchase – Air-to-Water Heat Pump Could Become a Money Pit

Created on: 15 Jun 2017 19:31
C
Chris1982_1
Hello experts.

A house that was built solidly three years ago (without insulation) is up for sale.
The house is equipped with an air-to-water heat pump as well as a fireplace. There are no solar thermal or photovoltaic systems.
Heating is provided by the air heat pump and the fireplace, and an energy performance certificate is available. The values have varied somewhat over the three years, but well.

The seller gave me the invoice for the heat pump and the underfloor heating yesterday.

How can I tell if this is a "good" energy concept?
Before I buy, I want to make sure I’m not getting into a money pit.

Do I possibly need the exact external wall thickness (which type of masonry), roof insulation, window specifications, etc. for that?

I would appreciate any information. Have a nice evening and best regards, Chris
C
Chris1982_1
15 Jun 2017 20:53
The exterior wall is built with 36cm (14 inches) thick Poroton bricks. Then plaster. That’s it. No additional insulation.
The house was built at the end of 2013, so about 3.5 years ago.
RobsonMKK15 Jun 2017 20:56
That wall construction is perfectly fine
tomtom7915 Jun 2017 20:56
Is there a mechanical ventilation system with heat recovery installed?
C
Chris1982_1
15 Jun 2017 20:59
Ok, I thought this wall structure had already been installed 30 years ago.
If controlled residential ventilation is what you mean by ventilation: that does not exist.
M
matte
15 Jun 2017 21:01
It was built that way too, but a lot has changed with bricks since then... 😉 Parents built like that 30 years ago, and so do we now.

It’s comparable to a car from 30 years ago versus a brand-new car.
tomtom7915 Jun 2017 21:01
That could be the problem: an air-to-water heat pump without a controlled residential ventilation system. A "ventilation system" without control is pointless.

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