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Optimum Heatpump settings

  • 04-12-2017 5:06pm
    #1
    ArraMusha
    Registered Users, Registered Users 2 Posts: 589 ✭✭✭


    I am trying to find the optimum heatpump settings to use on a new build and there appears to be some conflicting views on this matter. Some advice I read says to only have the heatpump on during nightrate hours and to ‘drive it hard’ during these night rate hours (11pm-8am winter).  
    So I tried this and found that this works well due to the insulation and air tightness. The temperature only ever dropped a degree or so below the set temperature. I have most of the house thermostats on 19 C or 20 C and the bedroom on 17C.(I find it’s too hot to sleep above this). I recorded the kilowatts consumed at night during this setup and it was on average 6KWh. Note, the outside temperatures were not very low up to now (Nov 2017).
    I am thinking of changing the settings to allow for the heatpump to be constantly ON to see if it is more efficient (less power consumption)to do so.  The thinking is that the heatpump would only have to come on for shorter times as different rooms call for heat. I suppose it’s a try and see…or it could be a case of ‘if its no broken don’t try and fix it’ :ermm:. With this setup the electricity day rate will be higher, and the night will be lower, so it may not make sense.
    The optimum may be a combination of both, that is to have it on constant during night rate and for short top ups during the day.  I would appreciate any advice or suggestions anyone has on this.
    Overall I am very happy with the space heating efficiency and I think that the DHW(Domestic Hot Water) heating appears to consume a lot of power.


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