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Less hot water since new boiler installed

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  • 09-10-2020 12:19am
    #1
    InPsyDer
    Registered Users Posts: 62 ✭✭


    I live in an apartment block and our gas boiler was just replaced a couple of weeks ago.

    Since then, the hot water seems to run out very quickly compared to previously. Used to get enough hot water for 2+ showers even just running the 1hr boost - now I have it set to heat up water for 1h40m and it's stone cold after 2 showers! I have turned the temp up to just below 70 on both the cylinder and boiler (used to be grand at 60!) - no improvement.

    I can't understand how this could happen with a brand new boiler in place? Our management company uses the same plumbers for loads of jobs so they aren't cowboys or anything. Would be very grateful for any insights! I don't want to call the plumber about this (as he was a grumpy sort) without checking I'm not missing something obvious first!


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    #2
    Dtp1979
    Registered Users Posts: 12,739 ✭✭✭✭Dtp1979


    InPsyDer wrote: »
    I live in an apartment block and our gas boiler was just replaced a couple of weeks ago.

    Since then, the hot water seems to run out very quickly compared to previously. Used to get enough hot water for 2+ showers even just running the 1hr boost - now I have it set to heat up water for 1h40m and it's stone cold after 2 showers! I have turned the temp up to just below 70 on both the cylinder and boiler (used to be grand at 60!) - no improvement.

    I can't understand how this could happen with a brand new boiler in place? Our management company uses the same plumbers for loads of jobs so they aren't cowboys or anything. Would be very grateful for any insights! I don't want to call the plumber about this (as he was a grumpy sort) without checking I'm not missing something obvious first!

    Open the balance valve on the cylinder another half turn. Also check the cylinder stat is at 60


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    #3
    InPsyDer
    Registered Users Posts: 62 ✭✭InPsyDer


    Both cylinder and boiler are set at just under 70.


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    #4
    Dtp1979
    Registered Users Posts: 12,739 ✭✭✭✭Dtp1979


    InPsyDer wrote: »
    Both cylinder and boiler are set at just under 70.

    And the balance valve on the coil?


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    #5
    escortsaffair
    Site Banned Posts: 1 ✭escortsaffair


    Leaking; Low boiler pressure; No heating or hot water; Frozen ... fault, your engineer may recommend that you get a new boiler installed.


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    #6
    Dtp1979
    Registered Users Posts: 12,739 ✭✭✭✭Dtp1979


    escortsaffair wrote: »
    Leaking; Low boiler pressure; No heating or hot water; Frozen ... fault, your engineer may recommend that you get a new boiler installed.

    Wtf are you on about.


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    #7
    jimf
    Registered Users Posts: 3,953 ✭✭✭jimf


    Dtp1979 wrote: »
    Wtf are you on about.

    he could be back
    :p:p:p:p:p:p:p:p:p:p


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    #8
    Dtp1979
    Registered Users Posts: 12,739 ✭✭✭✭Dtp1979


    jimf wrote: »
    he could be back
    :p:p:p:p:p:p:p:p:p:p

    God, who? There’s been so many


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    #9
    John.G
    Registered Users Posts: 3,474 ✭✭✭John.G


    InPsyDer wrote: »
    Both cylinder and boiler are set at just under 70.

    Just feel the cylinder coil flow & return, you shouldn't be able to hold the flow and if the return is relatively cool then check the balancing valve as suggested above, (if fitted) and open it further, anything around one full turn from closed is generally more than adequate, fully open is ~ 4/5 full turns anticlockwise from fully shut.


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    #10
    InPsyDer
    Registered Users Posts: 62 ✭✭InPsyDer


    John.G wrote: »
    check the balancing valve as suggested above, (if fitted) and open it further, anything around one full turn from closed is generally more than adequate, fully open is ~ 4/5 full turns anticlockwise from fully shut.

    Sorry I'm not sure what a balancing valve is? Thanks!


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    #11
    John.G
    Registered Users Posts: 3,474 ✭✭✭John.G


    If you look at the side of the hot water cylinder you will see two x 3/4" copper pipes, the bottom one will be approx a third the way up from the bottom, there should be a valve on this, normally with a wheel (its called a gate valve) then follow post #9.


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