Energy efficiency - Save money with ISOVER

Increased energy efficiency in thermally and economically optimised house constructions is a question of airtightness, as the optimization of fresh air supply through regulated indoor air ventilation, usually combined with heat recovery, requires the building shell to be airtight.

A comparison of thermal needs of different house standards shows, how uncontrolled air exchange increases heating requirements dramatically, by up 20 kWh/m2a An ISOVER Multi-Comfort House, however, requires no more than 15 kWh/m2a of heat input.

In the long term, energy prices are forecast to increase further, so increased airtightness will have a significant role to play in the future, as it leads to higher energy efficiency.

Comparison of thermal needs of different house standards

Old restored house
Average house (post-1980)
Low-energy house
ISOVER Multi-Comfort House (passive house)
Uncontrolled leakage

 

approx. 300 kWh/m²a
approx. 100 kWh/m²a
approx. 50 kWh/m²a
≤ 15 kWh/m²a
≥ 20 kWh/m²a

What does kWh/m2a mean?

kWh/m2a means kilowatt hours per sq. metre per annum

What does kWh/m2a mean?

kWh/m2a means kilowatt hours per sq. metre per annum