Radiator.

[McNoodle]

I need to remove a radiator to fix it's bracket back in the right position - the whole thing has dropped one end. Do I need to drain the system first, and how if so, or just try and catch the inevitable few litres of water that will try & escape? (It's upstairs in a carpeted bedroom)

[AlBags]

Turn down/off handweel/TRV.
Turn off lockshield under cap firmly.
Slacken connectors each end.
With supports onto which you can lower the radiator, carefully lift slightly off the remaining bracket and pivot the rad down and leave supported while you refix the bracket.
Make sure you have enough pipe movement to reconnect after bracket fitted.
If not you will have to leave both controls off and drain that rad down. Watch for BLACK water inside!

[deggers316]

put loads of old rags or other down the black stuff "iron oxide" will not come out of the carpet

[geno500]

If you are lucky you will not have to drain down the system,shut off both end valves if you are lucky they both will shut sometimes they let by,again if you are lucky there will be enough play in the pipe work to lift the rad from the wall brackets,most times there is not,if there is follow the other posts and slacken just a little the two large nuts and tilt rad forward to get to the faulty bracket,there will be some leak so putsome towels down and a couple of containers,if there is not enough play to lift rad you will have to drain that rad by slowly letting the water out from one of the nuts you have loosened,depending on how big the rad is you should get about a two bucket fulls if the valves have shut off if not you will be draining the system via that rad