insulating water heater

Sep 29, 2003 3 Replies

hi there.i have a 100L electric water heater (similar to

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in my yard which i was thinking of insulating by wrapping it in fibreglass wool insulation and spraying evo-stick foam in the gaps. the idea is to cut down on heat losses.



then i started thinking....does the majority of heat escape through the walls which i will be trying to insulate? or does it escape through the hot water piping which i cant really stop happening?



Sam


The majority goes through the walls. However, a significant amount will be lost through the pipes, which should be lagged (insulated) for some distance from the heater with foam. About 60cm/2 foot should do it. (There's no harm in lagging more). The lagging will also make the pipework more resistant to freezing.

Christian.

Looking at the building regulations, it is suggested that you insulate for 1 metre from the vessel, or until it becomes concealed in the building fabric.

Christian.

Can not stopheat loss 100% why not lag hot water pipes as well

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