What stops a radiator working?

Online Answer
When your radiator is cold at the bottom, it's likely that there's a debris blockage that's restricting the flow of hot water to the whole radiator. Usually, the culprit of this particular problem is sludge, debris, rust and other bits of dirt..
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Radiator paint is readily available from hardware shops and the easiest option is to use spray paint. The finish is just as effective as traditional paint and can be done while leaving your radiator attached to the wall. Spray painting your radiators takes only a few minutes but does require a bit of preparation.
'Yes – drying clothes on radiators makes your boiler work harder than it needs to. This is because the clothes can prevent heat from being released, so your boiler uses more energy (and money) to keep the whole room warm. 'The extra moisture in the air also means that it takes more energy to heat the whole room.
Signs you need a new radiator
  • Your temperature gauge is running hot. If the needle on your temperature gauge is constantly running at the hotter end then there could be an issue. ...
  • Your car is overheating. ...
  • Leaking or low coolant. ...
  • Radiator discolouration or sludge. ...
  • Car heating issues.
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    Contrary to popular belief, vertical radiators work just as well as their horizontal counterparts. ... Science has shown vertical radiators are in fact just as efficient, with a 5000 BTU vertical working just as well as a 5000 BTU horizontal. Yippee!.
    RadflekRecommended by the Energy Saving Trust, Radflek reflects the heat from your the back of your radiators into the room, reducing heat transfer through the wall to the street outside. It's a revolutionary energy saving radiator reflector foil that reflects 95% of the wasted heat energy..