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  • Son's bedroom too cold and required electric heater in addition to the CH to keep above 16 deg

    That is bonkers

    Was the CH radiator dinner plate sized?!

  • 1m x 0.6 type 11. Room is 2.9 x 2.7m. I'm no expert in radiator sizing but I don't think it was miss sized. The walls are like fridges at this time of year here.

    Hopefully will no longer need to have the CH on overnight after this.

  • I have a mears calc in the van and can work it out for you if you want?!

  • I'm no expert in radiator sizing but I don't think it was miss sized

    It was underpowered as it couldn’t heat the room. Was it single panel? A quick calc puts the required power at around 1000 watts but a single panel type ii at 100*60 will put out 800 and typically you over spec the rads and let TRVs modulate the output.

    Not to say insulating is the wrong thing to do - with a bigger red you just piss more energy down the drain.

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