Immersion tank… Is it really needed ?

davey101 · 08-12-2021 10:51PM #1

Hi

tried searching the forum but no joy finding what I’m looking for.

Im looking into converting my attic which is quite small so trying to determine if I can do away with my current vented system and replace with an unvented one and in the process do away with the immersion and current tank that’s in the attic.

Reason being we never use it as an immersion for heating water and I expect the unvented system will have a tank that can go in the attic which will store the heated water from the gas boiler.

Am I off the mark, seems plausible but I’ve not much of an idea

would appreciate any input from someone in the know.

dathi · 09-12-2021 09:56AM

taken from the building regulations part G Tgds

1.3 The cold water supply to the kitchen sink should be taken directly from the service pipe supplying water to the dwelling; the cold water supply to the bath or shower and the washbasin and to other appliances in the dwelling should be from a cold water storage cistern.

unfortunately to comply with the building regs the water supplying your toilet and wash hand basins must come from a storage tank

09-12-2021 01:24PM

You can replace the boiler with a combi boiler & get rid of the hot water tank but keep cold water tank. Cold water tank will be pushed into the eaves so removing it wont really save any usable space. Combi boiler can't come off the mains as per building regs in post above. It comes from the cold water tank & gets pumped to the boiler. The cold water for bath & shower will go through the same pump to ensure equal pressure

By the looks of things we will all be going Heat Pumps in the future. I can see a lot of people who removed their hot water cylinder having to install it all over again for the heat pump system

davey101 · 09-12-2021 03:04PM

Thanks folks, great information.

Immersion tank… Is it really needed ?

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