I would like to start a new comparison thread and learn about your energy consumption. I am not completely satisfied with mine.
KFW55
Heated area 200 m2 (2,150 sq ft), underfloor heating
Standard rooms 19°C (66°F), living areas 22°C (72°F), bathroom 23°C (73°F)
Air-to-water heat pump with centralized controlled ventilation system
Domestic hot water temperature 50°C (122°F)
Data collection unfortunately only since April 2019:
I will update the table monthly. November will be included soon, with an estimated 650 kWh.
KFW55
Heated area 200 m2 (2,150 sq ft), underfloor heating
Standard rooms 19°C (66°F), living areas 22°C (72°F), bathroom 23°C (73°F)
Air-to-water heat pump with centralized controlled ventilation system
Domestic hot water temperature 50°C (122°F)
Data collection unfortunately only since April 2019:
| April | 407 |
| May | 347 |
| June | 109 |
| July | 131 |
| August | 144 |
| September | 198 |
| October | 356 |
I will update the table monthly. November will be included soon, with an estimated 650 kWh.
Lumpi_LE schrieb:
13500 is, of course, a significant figure, but not entirely unrealistic.
If the house hasn’t had any energy-efficient renovations, 200 kWh/m²*a (200 kWh/m²*a) is a realistic value. That results in 200 kWh/m²*a × 200 m² (2150 ft²) × 1 year = 40,000 kWh. Annual performance factor = 40,000 / 13,500 = 3.0 — which is also not unrealistic for an uninsulated older building. The consumption energy certificate shows a final energy consumption of 51 kWh/m²*a (51 kWh/m²*a), but it also lists this approximate annual consumption of 13,000 kWh over recent years.
Tobibi schrieb:
51 kWh/m2aYes, that only refers to the electricity consumption of the heat pump.Lumpi_LE schrieb:
Yes, that only refers to the electricity consumption of the heat pump.Sorry for the silly question, but what else is included to reach the 200 kWh/m2a mentioned earlier?
Hello everyone, I think the idea of a comparison is actually quite good. If as many people as possible provide their details as accurately as possible here, eventually we will find a comparable house with similar conditions. In our case (2 people, always at home) it looks like this:
KFW supposedly 40, building is at 720 m (2,362 ft) above sea level
heated area 150 m2 (1,615 sq ft), underfloor heating
all rooms at 22 °C (72 °F)
air-to-water heat pump with decentralized controlled residential ventilation
domestic hot water temperature 50 °C (122 °F) from October to March, otherwise set to 65 °C (149 °F) to optimize photovoltaic use, wood stove heated 8 days a year.
The figures show the total consumption of the heat pump including electric heating element and cooling in June, July, and August (with photovoltaics). Moved in autumn 2018.
November 392
KFW supposedly 40, building is at 720 m (2,362 ft) above sea level
heated area 150 m2 (1,615 sq ft), underfloor heating
all rooms at 22 °C (72 °F)
air-to-water heat pump with decentralized controlled residential ventilation
domestic hot water temperature 50 °C (122 °F) from October to March, otherwise set to 65 °C (149 °F) to optimize photovoltaic use, wood stove heated 8 days a year.
The figures show the total consumption of the heat pump including electric heating element and cooling in June, July, and August (with photovoltaics). Moved in autumn 2018.
| April | 291 |
| May | 226 |
| June | 202 |
| July | 205 |
| August | 192 |
| September | 184 |
| October | 136 |
November 392
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