It seems that you have little experience in construction and you meant a passive house. This is not a bad idea, but it is important to take into account the pec

It seems that you have little experience in construction and you meant a passive house. This is not a bad idea, but it is important to take into account the peculiarities of the terrain. A friend of mine built such a house, but decided to play it safe and bought a pair of radiators on https://www.radiatoroutlet.co.uk/designer-radiators/vertical-radiators https://www.radiatoroutlet.co.uk/designer-radiators/vertical... During the cold winter, the operation of a two-storey Passive house with an area of 160 sq.m will cost 14,500 kW, including 9200 kW for heating. If desired, as I wrote above, the house can be equipped with any additional energy sources, such as a fireplace, an oven, a heat pump, a solar collector for heating water, a wind farm, solar panels, etc.