Here's the completed checklist for an energy-efficient home:

  1. Building insulation - ensuring there are no cold spots.
  2. Use of energy-efficient windows and doors with double-glazed panes and low-conductivity frames.
  3. Ventilation and air recovery system - providing constant access to fresh air, reducing humidity, and preventing air pollution in the building.
  4. Heating with air conditioning and heat pump - using efficient heating systems that save on electricity and gas.
  5. Electric vehicle charging station - having a charging station for electric vehicles in the garage or yard will provide maximum convenience for electric transportation.
  6. Leak protection system - installing a leak detection system that quickly detects and resolves any leaks in the building.

These solutions will help ensure maximum energy efficiency in the home and reduce costs for heating and air conditioning, which will be beneficial for both residents and the environment.