You can build a house without a heating system. What you do is build it to better than PassivHaus insulation standards and then use the active ventilation syste

You can build a house without a heating system. What you do is build it to better than PassivHaus insulation standards and then use the active ventilation system to cool down the house in summer when the sun is shining and the solar panels are working. It's always struck me as odd that we continue to try to heat up houses in winter when solar panels work better in summer. Highly insulated and airtight houses always seem to me to be candidates for cooling down rather than heating up. Build with excess heat in the building, move that to the hot water cylinder, or vent outside as required.