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UFH thermostat overheating

Hello,


It's my first post here, so forgive me if this is not the right place for this question.


I've just moved to a flat with underfloor heating and I set my bedroom thermostat at 19 degrees from 5:30pm to 6:30am.
My understanding is that a 19.5 (for the switching differential of 1 degree) it will switch off.
I woke up at 5:30am feeling warm and realised the temperature was 21 degrees.
The heating was not on (as the set temp is 19) but still I don't understand how, at night, in winter, several hours after reaching the set point, it warmed up of 2 degrees more.
Is this normal?

Many thanks for any help,


lou

Comments

  • If the flat is not on the ground floor, it's possible that your neighbours downstairs have turned on their heating early in the morning and you're experiencing the warmth rising up into your property.


    I used to own a first floor maisonette (built 1930's, so insulation between floors not wonderful.) We always noticed when the folks downstairs had come home from work in the evening as the temperature in our living room shot up.
  • Thanks DeepSporran for your reply, I didn't think of that.


    It's a very new flat and the insulation seems pretty good, I'm not even sure if the people downstairs moved in...

    My door was open so I wonder if the heat came from the hall, which was set at 20 until 22:30 and then at 16 (but obviously it must take time to cool down...).
    I did close it at 5:30am and I ended up with 19 (2 degrees less) after an hour, but it does seem very counter-intuitive to me...
  • matelodave
    matelodave Posts: 9,307
    Part of the Furniture 1,000 Posts Name Dropper Photogenic
    Forumite
    What sort of uf heating is it, leccy or hot water. What sort of thermostat is it - some have heat anticipation and will start heating before time so the set temperature is acheived by the set time.
    Never under estimate the power of stupid people in large numbers
  • Hi Matelodave,

    It should be a hot water one, and the thermostat does not start beforehand. It starts at the set time and switches on if the temperature is 0.5 degrees less than the set one, or switches off if the temperature is 0.5 degrees more.

    Do you have any idea?

    Thanks!

    lou
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