Smart Home Energy 
If your hot water cylinder is warm to the touch, this 80mm jacket stops heat escaping into the airing cupboard instead of your taps — fits in twenty minutes, pays back in a year or two, and you don't need an installer.
Problem it solves
Reduces heat loss from hot water cylinders by adding 80mm insulation, cutting the energy needed to keep water hot and lowering heating bills.
Who it's for
Homeowners or renters with an uninsulated or poorly insulated hot water cylinder, especially those with older immersion heater or indirect boiler systems.
Why we recommend
A no brainer if your hot water tank doesn't already have a jacket. Fast payback.
Savings
- Typical annual saving
- £35–£70/year depending on cylinder size and hot water usage
- Payback period
- 1–2 years
