Insulation Advice

Hot Water Tank Jackets

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 with pipe insulation.

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
DIY 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 512012 to arrange collection of a 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