Cavity wall and loft insulation can save you money in both the short and long term. Even if you have to pay a small amount for installation, your insulation will pay for itself in around two years, maybe even less if you qualify for the special rates... and if it’s free then you’ll be using less energy at no cost to you at all!

Measure

Cavity wall insulation

Loft insulation

Annual saving (£/yr)

Around £135

Around £175

Payback (based on average instalment costs)

Around 2 years

Around 2 years

Annual CO2 saving

Around 560kg

Around 730kg

Average figures based on an average-sized 3 bed, gas heated semi-detached house with no previous insulation (paying the full cost installation price with no funding subsidy).