Is there much benefit of taking a 22mm cold supply in a house to the boiler before it splits to feed the boiler and the rest of the house. The pressure in the area is good. Obviously the outlet from the combi hot is 15mm so the hot will all be in 15mm.
15/22mm cold feed
- Thread starter tomsim
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Deleted member 267285
No.
Not often I disagree with the other pro's on here but .... I must be honest and have to say yes, I'd keep all mains supplies @ 22mm and only drop to 15mm at the branch off points.
I will always try to run a 22mm back bone for any mains supplies and drop to 15mm when branching off, IMO it maximises flow and keeps the water velocity down to minimise flow noise & turbulence/noisy pipework
I will always try to run a 22mm back bone for any mains supplies and drop to 15mm when branching off, IMO it maximises flow and keeps the water velocity down to minimise flow noise & turbulence/noisy pipework
Water mains is in the kitchen drill through to garage to the boiler. Would only be 22mm cold to the boiler if I did take 22mm
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Or just take 15mm through the pipework feeding is 25mm mdpe
The rest of the house is already plumbed from the boiler
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