Hello,
My husband and I are currently trying to decide which heating system to install in our planned house.
I insist on having a ventilation system and a wood-burning stove in the living room. So the heating should be compatible with these.
Our chosen construction company has now offered us three heat pumps:
Air-to-water heat pump: Nibe F2040-8 with Nibe VVM320
Exhaust air heat pump: Nibe F750 P with supply air module SAM 40
Ground source heat pump: Nibe 1245-6 with deep drilling
My husband currently prefers the exhaust air heat pump because he thinks it works like the air-to-water heat pump but makes better use of the warm air from running computers... Everywhere I read, though, it says: "Avoid exhaust air heat pumps unless you are building a passive house."
Does the supply air module actually make it function somewhat like an air-to-water heat pump, but with better use of the warm indoor air?
The house is planned as a two-story timber frame construction with KfW 55 standard. To be honest, I am completely overwhelmed by this complicated heating topic. The more information I get, the more complex it seems.
My husband and I are currently trying to decide which heating system to install in our planned house.
I insist on having a ventilation system and a wood-burning stove in the living room. So the heating should be compatible with these.
Our chosen construction company has now offered us three heat pumps:
Air-to-water heat pump: Nibe F2040-8 with Nibe VVM320
Exhaust air heat pump: Nibe F750 P with supply air module SAM 40
Ground source heat pump: Nibe 1245-6 with deep drilling
My husband currently prefers the exhaust air heat pump because he thinks it works like the air-to-water heat pump but makes better use of the warm air from running computers... Everywhere I read, though, it says: "Avoid exhaust air heat pumps unless you are building a passive house."
Does the supply air module actually make it function somewhat like an air-to-water heat pump, but with better use of the warm indoor air?
The house is planned as a two-story timber frame construction with KfW 55 standard. To be honest, I am completely overwhelmed by this complicated heating topic. The more information I get, the more complex it seems.
For gas, there are additional electricity costs of 50-100 EUR as well as approximately 20-30 EUR for chimney sweeping fees, plus the basic charge (in our case 195 EUR for gas; 61 EUR for a heat pump secondary meter and of course 0 EUR for a heat pump on household electricity). The fixed costs for gas are therefore 200-250 EUR higher. Consumption costs are added on top of this.
G
Goldi0911119 Aug 2016 12:18Yes, it is true that the figures cannot be compared directly.
Gas prices here are rather around 5.x cents.
Gas prices here are rather around 5.x cents.
I would definitely choose a ground source heat pump. Drilling for 7,000€ is unnecessary – you can install the ground loop pipes relatively easily at about 1.5 meters (5 feet) deep. Just look up "trench collector" for more information. Costs including labor and excavator rental are around 2,000€ to 2,500€. On the other hand, there is a subsidy of 4,500€ (BAFA). Therefore, the extra cost for the ground source heat pump would only be about 4,000€ to 4,500€! Over the years, this is definitely worthwhile, especially since electricity prices will continue to rise.
Doing it yourself is always cheaper. Sometimes also more cost-effective. Comparing a trench collector done by yourself versus an air-to-water heat pump installed by a professional is not a fair comparison. You would need to compare installing a complete heat pump system yourself. That also goes faster than a trench collector.
If you choose geothermal energy, do it right. One borehole for at least 50 to 100 years and that’s it.
If you choose geothermal energy, do it right. One borehole for at least 50 to 100 years and that’s it.
S
Sebastian7920 Aug 2016 17:37Oh, trench collectors – they don’t work everywhere, but people like to refer to the map anyway...
For us, it wasn’t an option, so we went with drilling, and everything is great.
For us, it wasn’t an option, so we went with drilling, and everything is great.
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