I'm running pipes to location for a new combi. The flow and return are 22, so ill run them in 22. The DHW and cold inlet are both 15 at boiler. Would there be any benefit in running up to the boiler in 22 then reducing to 15 at boiler? Or just run it in 15 all the way to the boiler.
-
Looking for a smarter way to manage your heating this winter? We’ve been testing the new Aqara Radiator Thermostat W600 to see how quiet, accurate and easy it is to use around the home. Click here read our review.
Worth increasing pipe sizes
- Thread starter williamglossop
- Start date
- Joined
- 8 May 2017
- Messages
- 10,479
- Reaction score
- 2,775
- Country
15 mm ,copper. No point in using 22mm for cold feed and DHW.
Understood. But it will be PEX to within a meter or so. Does that alter your opinion?
- Joined
- 8 May 2017
- Messages
- 10,479
- Reaction score
- 2,775
- Country
Do it all in copper ,soldered fittings, don't bury it in concrete ,then forget about it all for around 50 years !
That's my opinion ,for what it's worth.
That's my opinion ,for what it's worth.
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
