Terraced house, two-storey with pitched roof - Efficiency House 85

Object data

Measures	U-values (W/m²K)		Description
Measures	Before	After	Description
Gable roof/top floor ceiling	0. 80/0.60	0.26	Blown-in insulation 16 cm WLG 040, ceiling with 12 cm (WLG 035) walkable insulation
Plastic windows with thermal insulation glazing from 2004	1.80	1.80	Unchanged
Solid exterior wall, not insulated	1.0	0.17	Insulation of exterior walls, composite thermal insulation system 14 cm (WLG 032)
Basement ceiling	1.0	0.22	Insulation of basement ceiling from below, 6 cm, (WLG 022)

Measures	before	after
Heating/hot water via district heating	Unregulated circulation pump, pipes not insulated, no hydraulic balancing	Highly energy-efficient pump, insulation of pipes in accordance with EnEV, hydraulic balancing carried out and documented
Ventilation	Ventilation via windows and vents	Decentralized ventilation system with heat recovery
Heat transfer	Radiators, manual valves	Radiators, new 1 K thermostatic valves
Other system technology		PV system with approx. 8 kWp output, electricity for own consumption, air-water heat pump

Measures	before	after
Primary energy demand	167 kWh/m²a	22 kWh/m²a
Final energy demand	175 kWh/m²a	43 kWh/m²a
Specific transmission heat loss	1.03 W/m²K	0.40 W/m²K
CO2 emissions	40 kg/m²a	5 kg/m²a