Insulation Advice

Lagging your hot water pipes, and insulation your hot water cylinder.

The savings

A new, 80mm thick hot water cylinder jacket will save you around £20 a year. The jackets themselves cost about £10 to buy, meaning that you'll reclaim your costs in around 6 months. Insulation for hot water pipes will cost about £10 and save you around £10 a year, which means you could potentially recover the cost of fitting within a year.

You'll be saving about 150kg of CO₂ when you fit a British standard hot water cylinder jacket and about 60kg of CO₂ by lagging hot water pipes.

The following table gives approximate costs, savings and paybacks for hot water cylinder jackets and pipe insulation:

	Hot water tank jacket	Primary pipe insulation
Annual saving per year	£20	£10
DIYPaybackmonths Payback cost	£10	£10
Payback	6 months	1 year
CO2 saving per year	160kg	70kg
(Information supplied by the Energy Saving Trust)

How the savings add up

If everyone in the UK fitted a hot water cylinder jacket, there would be enough CO₂ saved per year to fill over 4.2 million double decker buses.
A hot water jacket costs around £10.

Dorset Energy Advice Centre has hundreds to give away, please call for free on 0800 975 0166  to arrange collection of a free hot water cylinder jacket.

How it is installed

A hot water cylinder jacket costs around £10. Fitting a jacket to a hot water cylinder is a straight forward DIY job. Fitting insulation to pipes is easy if the pipes are accessible and will cost around £10. Professional help may be required to fit insulation to harder to reach pipework.

Call Dorset Energy Advice Centre on 0800 975 0166 for further advice about insulation