ᐅ Heating system for a house with an auxiliary building, underfloor heating, gas / geothermal energy

Hello,

I plan to build a house in the next few months (about 4 months). The plot of land is already available (30 x 50m (98 x 164 ft)). I want to build a house (about 165m² (1,776 sq ft) to KfW 40 standard) and an outbuilding (about 100m² (1,076 sq ft), normal insulation standard with 24cm (9.5 inches) T10 brick). The heating system will be installed in the outbuilding. Both the house and the outbuilding need to be heated. In the outbuilding, a heating output of 10-12°C (50-54°F) will be sufficient. The entire system should be realized with underfloor heating. Which type of heating system would you recommend (gas, geothermal, etc.)? What should be taken into consideration?

Regards, Fabian

Hello,

Vwgolfcabrio schrieb:
.... Everything is planned to be done with underfloor heating. Which heating system would you prefer (gas, geothermal...). What should be considered

What heating load was calculated? Has controlled mechanical ventilation been adequately taken into account? What is the actual energy consumption for heating and hot water?

Best regards

Hello,

The house will be equipped with a mechanical ventilation system with heat recovery.

Heating load for the house at 20 degrees Celsius (68°F) is approximately 4000 watts.
Heating load for the outbuilding at 12 degrees Celsius (54°F) is approximately 3500 watts.

What would you suggest?

Hello, here are the requested details:

- House: Heating energy demand: approx. 4000 kWh, Domestic hot water demand approx. 2500 kWh
- Outbuilding: Heating energy demand: approx. 3000 kWh

Are these data sufficient?

Vwgolfcabrio schrieb:

- House: heating energy demand: approx. 4000 kWh, hot water demand approx. 2500 kWh
- Outbuilding: heating energy demand: approx. 3000 kWh. Are these data sufficient?

If the data come from an energy saving ordinance or KfW certificate, they are worthless for this purpose, because using them to size a heating system or estimate demand or consumption is not permitted.
Furthermore, the advisor here doesn’t seem very knowledgeable! The house is a residential building, the outbuilding is a non-residential building! ;-)

Best regards

One can certainly make a recommendation. I tend to favor gas condensing technology. This technology has been tested for decades and is incredibly cost-effective! As for heat pumps, I haven’t heard of any experiences spanning 20 to 30 years yet.