Good day,
My newly built semi-detached house (about 150 sqm (1600 sq ft) without basement, KfW55 standard) is now nearly 10 months old. The air-to-water heat pump is working well. However, I recently noticed that a couple of friends also built a new semi-detached house (same builder, without basement, KfW55 standard) and they have the same heating system but with 50% less heating capacity, even though their house is 250 sqm (2700 sq ft)!
I would prefer not to operate my heating system inefficiently, and I also paid more for the heating system!
Who should I contact about this? The builder remains silent on this matter.
My newly built semi-detached house (about 150 sqm (1600 sq ft) without basement, KfW55 standard) is now nearly 10 months old. The air-to-water heat pump is working well. However, I recently noticed that a couple of friends also built a new semi-detached house (same builder, without basement, KfW55 standard) and they have the same heating system but with 50% less heating capacity, even though their house is 250 sqm (2700 sq ft)!
I would prefer not to operate my heating system inefficiently, and I also paid more for the heating system!
Who should I contact about this? The builder remains silent on this matter.
boxandroof schrieb:
And once everything is optimally set, you proceed to, for example, switch off the heating at night for 12 hours because it operates more efficiently during the day. As a result, it only delivers an average of 3 kW of heat and cycles less frequently.I agree with you on everything else, but switching off the heating at night or setting a setback is now proven to be pointless due to the thermal inertia of the screed.
B
boxandroof14 Sep 2018 11:20Exactly. The building’s thermal mass is being used to bridge the low nighttime air temperatures as a heat source for the heat pump. This only makes sense for air-to-water heat pumps, when using photovoltaic systems during the day, with significantly oversized heat pumps to reduce frequent cycling, or conversely, when cheap night electricity is available.
Otherwise, you’re right tomtom79, nighttime setback is of little use in modern houses.
But the original poster isn’t that far yet ;-) First, they need to focus on the basics..
Otherwise, you’re right tomtom79, nighttime setback is of little use in modern houses.
But the original poster isn’t that far yet ;-) First, they need to focus on the basics..
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