מערכות בבניין ירוק

The best way is to insulated your house, windows ,doors, ceiling, and do air tightness

Hi. It's near impossible to insulated your house to get the desired effect in Israel as most contractors don't know how.
As in airtightness , you would need to change all your windows and doors. Install airtightness parr barrier and then install a heater exchange system that pulls air from your bathrooms kitchen ect and blow clean air into your bedrooms and living space

To get a a 100% airtightness you will need this as a normal house. As a normal house will loose its heating or cooling 5 times a hour. So you are heating or cooling you house 5 times more the you need to .