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HP with UFH night-time only vs constant heating

  • 29-04-2016 5:19pm
    #1
    Denisoftus
    Registered Users, Registered Users 2 Posts: 757 ✭✭✭


    Hey, I've been discussing different options for heating the house with a heat pump + UFH with number of people, including plumbers, electricians, builders.

    So far the most advisable option is to use heatpump at all time with the schedule to increase the heating slightly overnight and decrease slightly during the day.

    I was considering different option to heat only at night (night-meter) and keep it off during the day. This will of course make floor to cool down during the day, but with the screed about 150m should it be not enough to keep it warm until the end of the day?

    What setting do you guys use?

    Cheers.


Comments

  • #2
    DeeJunFan
    Registered Users, Registered Users 2 Posts: 110 ✭✭DeeJunFan


    What depth of insulation will you have below the screed?


  • #3
    Water John
    Registered Users, Registered Users 2 Posts: 21,808 ✭✭✭✭Water John


    The depth of insulation is important but also the sealed nature of the house.
    If the house has a good BER then heating on seems to be the way many are going now.
    If your running costs over a winter are low, then on all the time is the best option.


  • #4
    Denisoftus
    Registered Users, Registered Users 2 Posts: 757 ✭✭✭Denisoftus


    DeeJunFan wrote: »
    What depth of insulation will you have below the screed?

    200mm as far as I know.


  • #5
    Denisoftus
    Registered Users, Registered Users 2 Posts: 757 ✭✭✭Denisoftus


    Water John wrote: »
    The depth of insulation is important but also the sealed nature of the house.
    If the house has a good BER then heating on seems to be the way many are going now.
    If your running costs over a winter are low, then on all the time is the best option.

    House is an old cottage renovated, not everything was done to up to date standards, generally good insulation to the walls, attic, ceiling, very good floor insulation with DPC, windows double glazed but a bit dated, so only winter will show. At the moment pump is only heating water, quite warm outside anyways. For water I put night heating only with 2 hours in the evening, seems to me did a job.

    Plumber still insists on constant heating, but we can't prove it wrong until next winter :)


  • #6
    Water John
    Registered Users, Registered Users 2 Posts: 21,808 ✭✭✭✭Water John


    I'll be interested in your findings, with what is a refit.
    I suspect house will lag in the afternoon, but if you have a dry stove on by then it would be possible a good mix.


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  • #7
    Denisoftus
    Registered Users, Registered Users 2 Posts: 757 ✭✭✭Denisoftus


    After couple of months of living in, I say I'd know. I'll keep you posted.


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