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How can I get hotter water? (with pictures)

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  • eco-friendly_2
    eco-friendly_2 Posts: 604 Forumite
    edited 21 February 2010 at 1:39AM
    VfM4meplse wrote: »
    This is an obvious one: do you have a thermostat on your HW tank that can be turned up?


    Unlikely there's a Hot Water tank in this instance.
  • My apologies I thought Vfm meant a thermostat on the boiler.
  • I'm just confused that the shower is really hot and yet running the tap alone is luke warm.


    As Bettie said the shower head creates a restriction, to prove the point remove the head and fill the bath with the hose. ;)
  • Hi

    You have an Ideal combi. Get some form of boiler cover from BG or whoever. It will let you down sooner or later.
    If you have the 24 kw then you will have a max of 9.6 l/m @35 degrees c temp rise. As others have said this is quite disappointing, and they should have gone for a bigger output. (33 k/w =12 l/m and 34 kw = 14.4 l/m.)
    A combi will dedicate it's entire output to h/w when called for unless there is a fault with the divertor.
    On it's next service have the inlet filter checked.
    You will have no thermostatic control on the hot tap to the bath. (unless there is a TMV under the bath. I would say that's very unlikely though)
    Don't know if the shower is thermostatic though.


    GSR.
    Ask to see CIPHE (Chartered Institute of Plumbing & Heating Engineering)
  • Hi

    You have an Ideal combi. Get some form of boiler cover from BG or whoever. It will let you down sooner or later.

    Absolutely accept that comment actually. Having had other problems with the workmanship in what is a new build -I really don't trust the equipment they have fitted or the ability of those fitting it. I could start a new thread dedicated to boiler cover but any suggestions here would be welcome. I have heard worrying stories about BG cover still meaning you pay for power flushing etc when it's not needed. If i'm to get some cover I want peace of mind.
  • 27col
    27col Posts: 6,554 Forumite
    What you are saying is not logical. They would not do a power flush unless you said that you were prepared to pay for it. In any event, you could always get a 2nd opinion as to whether it was necessary.
    I can afford anything that I want.
    Just so long as I don't want much.
  • What i'm saying 27 is that I have heard bad stories on here and other forums about BG service.

    I will look for some cover from another provider.
  • scotsgirl_3
    scotsgirl_3 Posts: 1,618 Forumite
    We have exactly the same problem with our combi - shower is very hot and powerful, but bath tap useless. For us, running hot tap at about half speed makes all the difference and isn't absurdly slow to fill (plumber told us to do this after we complained lol). The combi just can't heat the water fast enough for a full pelt bath tap in our house. And funnily enough, ours is an Ideal boiler too..........................
  • keystone
    keystone Posts: 10,916 Forumite
    VfM4meplse wrote: »
    This is an obvious one: do you have a thermostat on your HW tank that can be turned up?
    With a combi?

    Cheers
    The difference between genius and stupidity is that genius has it's limits. - Einstein
  • keystone
    keystone Posts: 10,916 Forumite
    edited 21 February 2010 at 6:52PM
    jgallcash wrote: »
    Thanks for the replies. I will definitely check out the model number more closely and confirm.
    That will help in confirmation.
    I'm not running any heating or cold whilst running the bath-literally just the hot water tap for the bath (1 bedroom flat).
    DHW always has priority if CH and DHW are demanded at the same time. If the diverter valve is working correctly then it will shut the heating off whilst you are drawing hot water.
    Would the 24W version struggle to provide water even for a 1 bed flat of 52 square meters?
    Size of flat doesn't matter. Its the flow rate that counts and that will depend on the boiler power. Typically a 24kW combi has a DHW flow rate of around 9 litres per minute at 35 degree rise. If you bath tap is allowing (say) 12 litres a minute to flow into the bath the boiler is puffing a bit and can't keep up so the water is a lot colder than you would hope. The flow rate through the shower head is a great deal less so you always get hot water.
    Thanks for the tip on running the water slowly-that's not something I have not considered.
    Thats a better solution than replacing the boiler - from a financial POV anyway. :)
    Is it true that taps have heat restrictors on? Do mine look normal?
    Some do. Yours looks as though it doesn't.

    Cheers

    Edit - Sorry just spotted that CH has already said some of the above.
    The difference between genius and stupidity is that genius has it's limits. - Einstein
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