Low energy house in Aabenraa

The Krogh Regel family has designed their dream house in a new build district in the small village Loejt Kirkeby in Aabenraa, Denmark.
 

The house was originally designed as a low energy class 2 (according to the Danish building code), but when the family looked into the different technical solutions they decided to bring the energy consumption down to low energy class 1 meaning that it must only use half as much energy as a normal house.

Built
2007
 

Size
340 m2 of which 240.5 m2 is used for living space.

Energy consumption
The energy bill in the low energy house is 400-670 euro per year including hot water. This ends up in annual savings of 1,740-2,000 euro compared to a normal house. Furthermore, the family saves 3,350 euro for not having to connect to district heating. Building this low energy house requires extra investments of up to 13,400 euro. This means a pay back time of 5-6 years.

Insulation
The house is well insulated and tight. Underneath the façade there is 390 mm of Rockwool insulation. Along the inner side of the foundation 75 mm of Rockwool insulation has been put up in their full height to minimise thermal bridges between the foundation and the ground deck.
 

Technical solutions
An efficient heat pump converts the energy in the air outside to heating indoors and ventilates the entire house. Solar panels are used to heat the water