ᐅ Air-to-water or air-to-air heat pump for a new single-family home, 150 sqm?

Created on: 25 Jul 2015 15:58
L
larina
Hello

There are probably similar topics to my question already, but many of the terms still feel like foreign words to me.

Our situation:
We are planning to build a new single-family house of 150sqm (1,615 sq ft) in timber frame construction (prefabricated house) in 2016/2017.
The builder’s “special offer” includes an air-to-air heat pump (Nibe750) for €9,000.
In our development area, neither natural gas connection nor geothermal energy is possible. We do not want either a gas or oil tank.
Now we are facing the question: air-to-air heat pump or air-to-water heat pump?
What are the advantages and disadvantages? What should we consider when making our decision?

Our current plans:
- Underfloor heating
- Possibly solar panels
- Conduits planned for potential future photovoltaic system
- Controlled mechanical ventilation system

Now my question to you:
Have you faced a similar decision and what experiences have you had?
Is an air-to-water heat pump really relatively noisy?
Maybe someone with professional knowledge about heating systems can provide us with information.

Many thanks in advance for reading my questions
D
daytona
28 Sep 2015 14:19
Air is always the worst choice as a medium for heat transfer (cold is also heat) due to its low specific heat capacity. Therefore, I would always prefer liquids, in this case water... (air-to-water heat pump)
L
larina
29 Sep 2015 16:32
Does anyone happen to know the Stiebel Eltron LWZ 304/404??