|What are we talking about?
||How long does it typically take to replace
a cylinder (also known as am immersion tank or geyser)?
||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.