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  1. C

    Rads upstairs cold when underfloor heating on downstairs

    I have an unvented oil-fired system. Downstairs is underfloor, upstairs is wet rads. The problem is that when I have both downstairs and upstairs heating on, the rads are cold upstairs. When I turn the underfloor off, the rads upstairs get hot.
  2. C

    Some radiators hot some cold

    Some of my upstairs radiators get hot whilst others stay cold. All rads apart from 2 myson towel rads have Honeywell Radplan thermostats fitted. The 2 Myson towel rads heat up fine, as do 2 of the other rads but the remainder are cold or luke warm at best. I've tried setting all thermostats to...
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