weatherization
/ˌwɛðərəˈzeɪʃən/
noun
- The process of making a building more energy-efficient by sealing it against weather, such as adding insulation or caulking windows and doors.
- Weatherization of the old school building saved the district thousands of dollars in energy bills.
- The city offers free weatherization for low-income homes to reduce heating costs.
- After weatherization, the house stayed warmer in winter and cooler in summer.