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Hot water cylinder jacket

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The short answer

Insulate tank and pipes

Price from
£15.00
Time on site
15 minutes to 1 hour

What you get

You get a more energy-efficient hot water system, reduced heat loss from your cylinder, and lower water heating costs.

Get up to 3 quotes

When do you need a Hot water cylinder jacket?

You need a jacket if your tank is bare metal or feels warm. Modern rules say tanks should have plenty of insulation to save energy.

  • Fit one if your tank feels warm
  • Use one for thin factory foam
  • Replace old torn or dusty jackets
  • Get one to improve EPC ratings
  • Landlords need them for efficiency rules

What happens on the day

A pro will check your tank size and look for any leaks first. They wrap the jacket tightly to ensure no heat escapes through gaps.

  • Professional measures your cylinder size
  • Jacket panels wrapped around the tank
  • Straps pulled tight for a snug fit
  • Small holes cut for pipe access
  • Thermostats kept clear for safety
  • Often includes lagging for nearby pipes

How to prepare

  • Clear items out of the airing cupboard
  • Ensure the tank is easily accessible
  • Check the tank for existing leaks
  • Identify where the immersion heater is
  • Wipe dust off the cylinder surface
  • Make sure there is floor space
  • Provide a clear path for the pro

How to improve your result

  • Add foam lagging to nearby pipes
  • Check your cylinder thermostat settings
  • Insulate the cold water tank too
  • Bleed your radiators for extra warmth
  • Upgrade to a smart heating controller

Why it is useful day to day

A good jacket makes your home run much more efficiently every day. It is a small change that offers big rewards for your wallet.

  • Water stays hot much longer
  • Cupboard stays at a better temperature
  • Lower monthly heating bills
  • Boiler or heater runs less often
  • Reduces your home carbon footprint

Why we ask these questions

Getting the right fit is vital for safety and saving money. A pro ensures the jacket works perfectly without causing any electrical issues.

  • Jackets should be 80mm thick
  • Covers must be fire retardant
  • Immersion heaters need to stay clear
  • Proper fit prevents heat loss gaps
  • Professional fitting ensures maximum bill savings

Frequently asked questions

Often needed alongside

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