Compared to a classic house, whose energy bill tends to increase progressively, the energy saving of a passive wooden house is 75-80%. Thus, the external energy requirement is lower than in the case of a normal house due to the maximum use of the following heat sources:
The main reason for energy efficiency lies in the thermal insulation of the foundation, walls and structure, through the use of insulation materials and technology without thermal bridges. Thus, the cost of the energy bill will decrease 10 times compared to that issued for a traditional house. In other words, in the case of an ordinary house, the annual maintenance can reach an average of 450 euros, while for a passive house these expenses do not exceed 100 euros.
As for the cost of building such a house, it is 7-10% higher than that of a traditional house. However, it is a once-in-a-lifetime investment for the customer. And, thanks to the passive house structure, the building's running costs are obviously lower, so the investment is recovered in a shorter time.
