Insulate your home. Cavity wall insulation can cut heat loss through the wall by up to 60 percent.

房屋隔热可以利用空心墙来减少热能损耗，降幅高达60%。

youdao

The research identified a number of initiatives, including projects producing an alternative to denim and one developing cavity wall insulation from processed natural fibres.

研究鉴定了大量的措施，包括牛仔皮质替代品的项目生产以及开发空心绝缘处理的天然纤维。

youdao

Cavity wall insulation slows down the rate at which warm air escapes your property, keeping each room of your house warm even when it is bitterly cold outside.

FORBES: How To Winterize And Heat Your Home For Less

If you are living on means tested benefits AND you live in the hardest-to-heat homes you may be eligible for a free new central heating boiler, insulation for a hot water cylinder, loft, cavity wall and solid wall insulation, draught proofing for doors and windows or renewable energy technologies such as solar panels.

BBC: Battling bills - what help is there?

Improvements could include attic and wall cavity insulation, high-efficiency windows and appliances, duct-sealing, or rooftop solar.

FORBES: California Program Eliminating Upfront Cost Of Energy Upgrades To Launch For Businesses