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  • I'm refurbing a bedroom. Sorting out a knackered ceiling, new plaster, new carpet. Lots of mess. The radiator in the room is old and in a mess so I'm going to replace it.

    Radiator calculators say I need about 4500 BTU for the size of the room. B&Q will sell me a radiator that easily fits in the room which is 9600 BTU for not too much money. It's massively overspecced but there will be a TRV which will keep it in check a bit and in theory it might be useful having a very big radiator if I ever feed it with lower temperature water in a future world where gas boilers are banned.

    Are there any drawbacks to overspeccing a radiator like this?

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