Passive House.

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Across
  1. 4. ... exchanger
  2. 8. we can do it with the exhaust air to achive heat
  3. 9. type of ventilation in passive house
  4. 11. machine to cool down the air
Down
  1. 1. line where heat is transfer from the house to the outside
  2. 2. the part of building compartment that keeps heat or cool air inside of the building
  3. 3. type of house appliances used in order to save money
  4. 5. not harmful to the ecology
  5. 6. building cover
  6. 7. type of heat pump used outside of passive house
  7. 10. feauture of windows and doors in passive house