ᐅ Good Brine-to-Water Heat Pump and Mechanical Ventilation with Heat Recovery Combination

I wanted to ask which combination of ground-source heat pump and controlled residential ventilation system you would recommend? We are building a 140 m² (1,507 sq ft) bungalow next year and plan to install a ground-source heat pump (deep drilling) and controlled residential ventilation system.

This is a matter of philosophy. For our house, we chose the complete Nibe system (Nibe S1155-6 and Nibe ERS 10-400). Communication takes place via Uplink as a software interface, which ensures that the subsidy from BAFA is definitely granted.

I chose the Nibe S1155 because it can operate with a very low flow rate (below 300 liters per hour (80 gallons per hour)), allowing for a much more relaxed layering of the buffer tank for a domestic hot water station and, if necessary, eliminating the need for a heating circuit mixer if the heating volume is smaller.

If BAFA also accepts interfaces like KNX, EnOcean, or similar, then a variety of other combinations are possible. It makes little difference whether you use Nibe (or alpha innotec, Novelan), IDM, or others as your brine-to-water heat pump. What is important to me is a good coefficient of performance (COP), that the brine-to-water heat pump is modulating, and that it has a good low-end capacity. The rest is no rocket science. For mechanical ventilation with heat recovery, manufacturers like Zehnder or Maico are often mentioned. If we hadn’t chosen Nibe, it probably would have been a Zehnder Q350.

Ybias78 schrieb:

I wanted to ask which combination of ground-source heat pump and controlled mechanical ventilation you would recommend? Next year, we are building a 140 sqm (1507 sq ft) bungalow and want to install a ground-source heat pump (deep borehole) and controlled mechanical ventilation.

For ground-source heat pumps, the manufacturer is almost irrelevant. I can’t think of any manufacturer that consistently receives negative feedback for their heat pumps. Make sure the heat pump is modulating and has the lowest possible modulation limit. I can fully recommend Nibe, Alpha Innotec (basically Nibe), and Stiebel Eltron.

For ventilation systems, I would suggest Zehnder or Maico.

Strahleman schrieb:

This is a matter of philosophy. For our house, we chose the complete Nibe system (Nibe S1155-6 and Nibe ERS 10-400). Communication is via Uplink as a software interface, which guarantees full approval by BAFA (the German Federal Office for Economic Affairs and Export Control).
I chose the Nibe S1155 because it can operate at a very low flow rate (below 300 liters per hour (1.3 gallons per hour)), allowing for a more relaxed layering of the water storage for a fresh water station and potentially avoiding the need for a heating circuit mixer if the heating volume is smaller.

If BAFA also accepts KNX, EnOcean, or similar as an interface, then several other combinations are possible. It does not make much difference whether you use Nibe (or alpha innotec, Novelan), IDM, or others as the brine-to-water heat pump. What matters to me personally is a good COP, a modulating brine-to-water heat pump, and a good low load limit. The rest is not rocket science. For controlled ventilation, Zehnder or Maico are often mentioned as manufacturers. If we hadn’t chosen Nibe, it would probably have been a Zehnder Q350.

Are both units noisy? And have you taken any noise reduction measures?

Does anyone have experience with Bosch products (brine-water heat pump and controlled mechanical ventilation for living spaces)?

Ybias78 schrieb:

Are both noisy? And have you taken any noise reduction measures?

Unfortunately, we have no experience yet, as our construction will only start in September. However, we plan to use sound attenuators with the controlled residential ventilation system to keep it as quiet as possible.

Bosch used to be Buderus, so you might find some information under that name. I found it rather unsuitable for the brine-to-water heat pump, as it modulates quite widely (if I remember correctly).