Hi, Im looking at installing a couple of extra rads in my house (about 5000btu each) The central heating system is a drop system (upstairs ring main, then 3 drops to the downstairs rads) Question is, I was looking at tying into the upstairs ring and then doing a fourth drop for the two extra rads. Would it be best to use 22mm or 15mm pipe for the drop? Many thanks in advance
Bit of plumbing advise PLEASE
- Thread starter Richie866
- Start date
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15mm will be ok for the drops if taken from 22mm upstairs circuit
Cheers, most appreciated
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If its a straight drop ( not meters and meters away) you could even use microbore 
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