ᐅ Actual Heating Consumption Data – User Experiences

Created on: 7 Mar 2016 21:00
G
Goldi09111
Hello dear community,

Since I have encountered various figures during the planning and consideration of our single-family house, I would like to start a thread where everyone is welcome to share all kinds of information.

Please move the topic if I have posted it in the wrong section.

I’ll start with the house of a good friend:

Type – 1.5 stories, gable roof, basement, approximately 140m² (without basement)
Heating – gas condensing boiler with about 400L (105 gallons) buffer tank and solar panels for hot water (2 panels)
Fireplace – yes, but without water jacket
Ventilation – Systemair VC400
Wall construction
- Eder Thermopor 016 – thermal conductivity Lambda 0.16 W/mK
- Insulation mineral wool rigid boards 120mm (5 inches) WLG035 and lightweight exterior plaster 20mm (0.8 inches)
- Heat transfer coefficient U-value 0.18 W/m²K
Number of occupants – 2 adults and 1 child (2–3 years)

Consumption values (as of 2015):

Water/sewage – 50m³/year (1,765 cubic feet/year) → about €250
Electricity – 2,700 kWh → about €900
Gas – 700m³ (24,740 cubic feet) → about €525 (although the house is heated a bit “too comfortably” for our taste)

Waste disposal, broadcasting fees, property tax… are very region-dependent.

I am grateful for any improvements and tips and look forward to strong feedback.
S
Saruss
29 May 2016 15:10
160 sqm (1722 sq ft) of above-ground living space with 1.5 floors, 85 sqm (915 sq ft) in the basement, but only half of it heated this year, KfW 70 standard (or current equivalent), underfloor heating, central ventilation with heat and moisture recovery, 1400 kWh electricity used for heating and hot water in the past 365 days (ground source heat pump).
I prefer not to mention household electricity, considering how much we wash and do laundry with the two little ones...
T
T21150
29 May 2016 18:11
Saruss schrieb:
1400 kWh electricity for heating and hot water in the last 365 days (ground-source heat pump).

Absolutely amazing!!!!!! 🙂

Wow.

COP around 5 or even higher??? 🙄
S
Saruss
29 May 2016 18:39
For heating with a brine inlet temperature slightly above 6 degrees Celsius (43°F), it is usually well above 5 degrees Celsius (41°F), and since it was a mild winter, the heating flow temperature was always below 30 degrees Celsius (86°F), which is a good combination. I am hoping for a really cold winter to see how the brine temperature behaves under high load.
P
Peanuts74
30 May 2016 10:08
PhiTh schrieb:
Now I’ll share about the "hard-working and therefore frugal" household: 2 people, both employed. All appliances are LED and rated A+(++).

Electricity consumption was 650 kWh in 2015 and 600 kWh in 2014 🙂

Huh, how is that possible?
P
Peanuts74
30 May 2016 10:27
ypg schrieb:
Devices that use a lot of electricity, as I recall, are: hair dryers, irons, vacuum cleaners, dryers... Nowadays, laptops, PCs, and TVs—especially plasma screens—are also on the list. Is standby mode still an issue?

Regarding cooking: one person considers cooking as heating a small pan twice for 5-10 minutes, keeping a pot in constant use, occasionally using a kettle, a blender, and a chopper for 20 seconds, and then baking for 45 minutes at 180°C (356°F).

Another person just cooks rice and uses it for salad.

So laptops and TVs should hardly be an issue these days. Our 55-inch Ambilight TV consumes less than 70 watts...