Across
- 2. Building that needs no heating
- 4. Wind-based power
- 9. Direction buildings should face
- 10. Room buffer zone
- 11. Used for solar energy
- 13. Home design strategy
- 14. Glass that reflects heat
- 15. Air sealant for openings
Down
- 1. Material that stores heat
- 3. Energy label system
- 5. Efficient roof layer
- 6. Controls light intensity
- 7. Shape of efficient homes
- 8. Outer layer of a building
- 12. Wall insulation material