How long will radiators and copper pipes last on a central heating system? I'm going to have a new boiler fitted and want to know whether I can just flush the existing system or should replace the whole lot. I guess the current system is at least 15 years old.
Obviously I can't fit the boiler myself, but if I do decide to replace the whole lot is there any legal reason why I can't do the radiators and pipework myself?
No - fitting radiators and pipework yourself is acceptable.
Your question about the lifetime of radiators and pipework is not as simple as you may think.
It all depends on:
how it was installed - sleeved and protected where necessary
flushed and inhibitors added
inhibitors added eveytime the system was drained.
If it was correctly installed, sleeved, coated/protected flushed with inhibitors added the system will be in very good condition and should cope with a new boiler for many more years.
Any of the above not done properly then there's a risk it may not cope with a new pressuried boiler and may leak.
Weigh up the costs - leave it and it may be ok. Or renew it all properly as described above, sleeved, coated, flushed and inhibitors added and you will not need to re-pipe or change radiators again in your lifetime.
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