ᐅ The heating options – air-to-air heat pump, air-to-water heat pump, or gas?

Created on: 10 Dec 2015 10:48
H
herann
Hello everyone,

I have long understood that heating is a complex topic. However, the fact that different suppliers give such varied recommendations only adds to our confusion.

We quickly decided on the following heating system – an air-to-water heat pump with controlled ventilation, supported by a photovoltaic system. Our reasons for this choice are:
  • No dependence on fossil fuels
  • Low running costs due to the photovoltaic system
  • Future-proof, since with underfloor heating installed, it would be easier to switch to newer technologies in 25-30 years
  • Comfortable living space thanks to even heat distribution through the floor
Yesterday, we visited a supplier who was very eager to sell us an air-to-air heat pump, offering substantial discounts. They also claimed that air-to-water heat pumps are basically outdated and that air-to-air heat pumps are practically the best on the market.
Strangely, this supplier also offers air-to-water heat pumps.
What do you think about this statement?
Based on my research so far, I understood the situation quite the opposite and have found more negative feedback concerning air-to-air heat pumps.

We were also informed about the “noise” produced by an air-to-water heat pump. We would prefer not to have a split system but a single unit placed in the basement. At the moment, I can’t imagine there would be a noise issue.
Does anyone have experience heating with an air-to-water heat pump?

Additionally, we have the option of a gas condensing boiler (including underfloor heating). Initially, we dismissed this idea, but the lower initial investment costs are making it more appealing now.
Is there anyone who has built with this and can share some insights?

Ultimately, it probably depends on how well the house is insulated, but some kind of heating system has to be installed, and we want to choose the “right” one...

Thank you very much in advance.
Mycraft12 Dec 2015 12:31
Hmm, what should be done here? Just like in the other rooms... simply set the desired/required flow rate at the heating circuit manifold... the room temperature will then result from that...
L
Legurit
12 Dec 2015 12:32
So, we don’t have any at all – the hydraulic balancing will hopefully be carried out properly to meet the desired temperatures – or what do you mean by children’s rooms?
echti2512 Dec 2015 12:36
I was referring to the regulation at night. You usually want it cooler then.
N
nordanney
12 Dec 2015 12:40
echti25 schrieb:
I meant the regulation for nighttime. You actually want it cooler then.
Nowadays, that doesn’t really work anymore with underfloor heating...
echti2512 Dec 2015 12:41
Clear, understandable, thank you
L
Legurit
12 Dec 2015 12:41
I believe this is an illusion – our heating system has been in screed mode in frost protection (rest phase before the next heating cycle) for 2 days now, we ventilate 5 times daily, and the house remains evenly warm. The system is so slow to respond that you can no longer experience sudden temperature drops – if that really matters to you, you need to build differently.