The 50plus

The cost to change a cylinder / immersion tank

0845 22 50 495 or one of our local numbers or book online here.

What are we talking about?

How long does it typically take to replace a cylinder (also known as an immersion tank or geyser)?

Typical time

1 day

Translate time to cost for your postcode by clicking on: Practical services and charges


Being able to turn the water off

Questions to ask

Is there adequate access to the cupboard bearing in mind the existing cylinder needs to come out and a new one put in. What size is the cylinder? What type is the cylinder? Click here for information on cylinder types.


If the situation is akin to the airing cupboard having been built around the cylinder then expect the work to be considerably extended. Also watch out for the old type cylinders in a tight space with little or no insulation. Modern cylinders have around 2" (50mm) of insulation built onto the surface so a same size replacement takes up more space. A new or recent cylinder has factory fitted foam insulation which is blue. Older cylinders are green, orange or have no insulation around bare copper.

Beware system drain down and refill. This is always something that should straightforward but often isn't. Non operational gate valves and airlocks can cause delay.

Common cylinders are available 'off the shelf'. Less common types / sizes need ordering.

Questions? Please contact us.