Pipe freeze to replace radiator ... risky??

georgehere

All I want to do (!) is put in a smaller radiator, one end of pipework stays where it is, shorten the other end keep valve in place, radiator at same height, pipes above floor.

I was thinking that if I can DIY it without draining the system then I could manage it myself, but if I get into draining it down then I am not sure about refilling and it would all get too much for an amateur so I'd probably end up calling someone out and that would cost me.

Mind you, flooding the bedroom wouldn't be a cheap option ...

I have a combi boiler and the radiator is at the end of the line, also the pipes are above the floor on the wall with easy access.

What do you think? Are these kits I see in places like Screwfix any good? On the surface it looks like a moneysaving option for me?

Thanks for any advice.

TiTheRev

I had this done this week to remove a radiator in the kitchen. A plumber did the freeze, removed the radiator and capped the pipes for around £50. Not worth risking doing it yourself if you can find a similarly kind plumber.

rexel

has radiator you have at present not got valves fitted

cybergibbons

I've used both the compressor based professional ones and the spray based ones. They both work fine.

The compressor ones will last as long as they are turned on, and the spray ones probably about 20 minutes before it gets a bit worrying.

I'd always make sure that you have a spare can on hand, and for worst case scenarios, some way of sealing the pipe ends should something unexpected come up.

Also, make a call about flushing and refilling the system, if it has been a while it may be worth while doing that.

27col

Have a couple of push fit stop end caps ready. They can be popped on in a second and just as easily removed. The only thing to remember is that you need to cut the pipe with a pipe cutter, so as to leave a smooth end for the cap to slip over. These caps do not like a pipe that has been sawn.

georgehere

Thanks all for the tips - I am encouraged to give it a go, but will try to get a quote as well ...£50 would be a resonable trade off for me.

[rexel: I should have said a shorter raditor rather than 'smaller', so it will be half the length and require one of the pipes to be shortened]

1984ReturnsForReal_2

I would drain the system & add new inhibitor if you haven't done it for a while.

& also if you are freezing it is better to do it just before or on a bend or joint.