ᐅ Air-to-Water Heat Pump for New Construction – Single-Family Home with Basement – Which Model?

Hello everyone,

The next big step in our new construction planning is coming up --> heating!

We have decided that we want an air-to-water heat pump combined with a central mechanical ventilation with heat recovery system due to various factors. Now, of course, the question arises:

- What is a good combination with a central mechanical ventilation with heat recovery system? Are there devices that work well together? What should we pay attention to?
- Which type (indoor installation / outdoor installation / split system)?
- Which manufacturer / which model?
- Other things to watch out for?

Information about our new build that might be relevant for the technical equipment:

- Construction is planned to start in February/March 2021, but the government subsidy application (e.g., BAFA funding) must be submitted on time
- Single-family house with basement – 150m² (1,615 sq ft)
- Building material: brick
- Underfloor heating only on the ground floor and first floor
- Planned for a future family of four (2 adults and 2 children)

I appreciate any help, as this topic is really broad, there are too many models on the market, and too many differing opinions from construction companies, who of course mostly sell what gives them the highest commissions...

The controlled residential ventilation system is initially not really related to the heat pump. What do you expect from combining them?

Because I assume you want an air-to-water heat pump, not an air-to-air heat pump. These are two different mediums and therefore only partially compatible.

Mycraft schrieb:

Mechanical ventilation with heat recovery initially has little to do with the heat pump. What are you expecting from combining them?

Because I believe you want an air-to-water heat pump, not an air-to-air heat pump. These involve two different media, so they can only be connected to a limited extent.

Yes, I want an air-to-water heat pump and a central ventilation system. The question is whether there are any coordination requirements or if it is even possible to combine the two. If they operate independently, then the focus shifts to deciding which air-to-water heat pump and which central ventilation system should be installed.

Since BAFA also supports controlled residential ventilation when there is a shared control system, most manufacturers have responded by including this option within their product lines.

For example, Wolf offers this with their CHA series and the Wolf controlled residential ventilation system.

The heat pump should be modulating, with minimal starting power and an adjusted maximum capacity.

However, much more important than the device itself is the design of the underfloor heating system. If this is not done properly, even the best heat pump will not be effective.

T_im_Norden schrieb:

Since BAFA also supports controlled residential ventilation systems when there is a central control unit, most manufacturers have responded by offering this option within their product lines.

For example, Wolf with their CHA series and Wolf controlled residential ventilation systems.

Exactly, the question is how BAFA promotes controlled residential ventilation. Does everything have to be centrally controlled, or is a controlled residential ventilation system independent from the heat pump also eligible for support? The question then is how good the models with central control are, or whether it would be better to look for other options.

It says right there: COMMON control! This means both devices must be able to be operated via a shared control unit.