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22 or 15mm Central Heating Pipe

Discussion in 'Plumbing and Central Heating' started by tododo, 1 Nov 2018.

  1. tododo

    tododo

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    Hi all

    Plumbers are hard to get hold of at the moment and they don't see to want to commit to a job so forced into doing this myself

    I have three new radiators to hang 2 are in new positions to free up wall space and one is almost the same position

    Its just a query around pipe sizing - at the moment there are 22mmm flow and return coming down the wall from upstairs and then there is a reducer and then everything is in 15mm downstairs I would say

    I asked a plumber that came around the other day and he said 15mm is fine - its been in donkeys years so I suppose it wont make much difference - due to the position of the new rads changing though there will be extra runs of 15mm pipe (1930s semi house) so its not a massive area - what do you think I should do - change all to 22mm and then just have 15mm tails coming off to rads???

    Boiler is 32KW supplying 7 rads (4 upstairs and 3 downstairs (taken 1 out totally so only three left downstairs) and underfloor heating which has just gone in in extension
     
    Last edited: 1 Nov 2018
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  3. terryplumb

    terryplumb

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    Plumber has already told you 15 mm is ok. If you dont believe one that has been to site and you just want some re assurance ......its fine !!!!!:D
     
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    DIYnot Local

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