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water storage tank

A hot water storage tank (also called a hot water tank, thermal storage tank, hot water thermal storage unit, heat storage tank and hot water cylinder) is a water tank used for storing hot water for space heating or domestic use.
Water is a convenient heat storage medium because it has a high specific heat capacity. This means, compared to other substances, it can store more heat per unit of weight. Water is non-toxic and low cost.
An efficiently insulated tank can retain stored heat for days, reducing fuel costs. Hot water tanks may have a built-in gas or oil burner system, electric immersion heaters. Some types use an external heat exchanger such as a central heating system, or heated water from another energy source. The most typical, in the domestic context, is a fossil-fuel burner, electric immersion elements, or a district heating scheme.Water heaters for washing, bathing, or laundry have thermostat controls to regulate the temperature, in the range of 40 to 60 °C (104 to 140 °F), and are connected to the domestic cold water supply.
Where the local water supply has a high content of dissolved minerals such as limestone, heating the water causes the minerals to precipitate in the tank (scaling). A tank may develop leaks due to corrosion after only a few years, a problem exacerbated by dissolved oxygen in the water which accelerates corrosion of both tank and fittings.

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  1. T

    Replace electric boiler &hot water storage tank 4 Electric CombiBoiler

    Is it worth replacing a Potterton gold 9kw electric boiler with a hot water storage tank for a new Electric Combi Boiler ? Would there a reduction is electric consumption and therefore a saving ? Please advise
  2. dilligaf

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    Can anyone tell me where the feed for the water comes from that feeds into the bottom of this Ventair?
  3. B

    Cold water storage tank overflow

    Hi, I wonder if you could help me. The overflow pipe drips intermittently from the large cold water storage tank in the loft. Not the small F and E tank. The ball valve has been checked and is working ok. The vent pipe from the hot water cylinder is not venting any water into the tank, and the...
  4. J

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  5. Y

    Cleaning Cold Water Storage Tank

    Hello. Decided to clean sediment from my cold water storage tank(just sediment nothing else is there). The pipe to the tank also splits off and feeds the hot water systems header tank(which also needs cleaned, but the boiler man can do that one). The water tank has 3 outlets. The overflow, one...
  6. C

    Leaking Cold water storage tank and overflow

    Hi there Hoping for some advice on a plumbing issue. Bit of background - currently I am not using my gas central heating system. The system is 20+ years old and kept breaking down and various plumbers visited and fixed problems but advised system flushes or a range of options - essentially the...
  7. D

    Air lock from cold water storage tank

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  8. @

    Require lid and insulation jacket for a cold water storage tank in loft

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  9. R

    Water Pump that pumps from river when it detects low water in storage tank

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  10. M

    Cold water storage tank bung

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  11. W

    cold water storage tank in the loft has started to overflow.

    The cold water storage tank in the loft has started to overflow. First post ever and not sure of my way around, I’ve listed my problem the way it happened My central heating system is a gas back boiler, been running fine for years. I usually use an electric immersion tank through the night on...
  12. T

    Electric shower from cold water tank

    Could anybody advise me whether an electric shower can be installed from the rising cold water main that feeds a cold water storage tank. Or if it can be installed from the tank on a shower pump. Or if you'd avoid fitting an electric shower on a cold water storage tank water system. Many thanks.
  13. PDS

    Harleqin Heatstream 200L Direct Mains Pressure Hot Water Storage Tank 200Dir

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  14. V

    Has hot water from expansion pipe damaged cold water storage tank?

    Hi, Trying to get my head around what may have caused our, admittedly very old, plastic cold water storage tank to split and leak through the bathroom ceiling. We have what I believe is referred to as an open vented system - conventional boiler, cold water storage tank and small header tank in...
  15. M

    water storage tank

    hi I'm looking for some inspiration for a new house I am building.. basically the house is quite rural and high up in the mountains, hence water pressure isn't great at the best of times. on top of that it can go off completely frequently enough to be an issue with 2 young kids in the house...
  16. D

    Bye law 30 cold water storage tank

    Hi All, I recently changed the tank in my loft as I am fitting a new digital power shower and the old one wasn't big enough and was made of asbestos. So I bought a Polytank 50 gallon tank and fitted it according to the instructions. My question is - is the dip tube on the overflow supposed to...
  17. J

    Noise as cold water storage tank fills

    I recently replaced the ball valve on my cold water tank in the loft but ever since then my wife has complained about the loud 'whooshing' noise as the cistern fills. We always had some noise with the old valve but I must agree this is much louder. The valve is a type 2 high pressure. Any advice...
  18. H

    Installing Cold Water Storage Tank In Attic

    Re. the overflow pipe: obv should enter the tank above max water level, but should the end of the pipe continue into the cistern and down below max water level? I've read this should be done to prevent draughts coming back along the pipe from outside. Is this correct? The overflow pipe should...
  19. W

    Noise Coming from Loft Water storage tank?

    Hi there, Just had the following email from one of my customers: ''we have a very loud noise coming from the loft like an underground train. It is intermittent but quite alarming at times accompanied by a banging noise.'' This is about a month or so after I installed a new CWSC and F&E tank...
  20. L

    Combi Boiler and using cold water storage tank

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