DIY Doctor

Low Mains Water Pressure and Updating to new Boiler

Postby Davearia » Thu Apr 25, 2019 9:56 am


Bought my house 3 years ago, a 50 year plus detached house on the coast of north west England. Lots of heating and insulating projects to do over the next couple of years. So I though I'd join this forum so I can find out some good ideas while getting my house up to scratch.

Currently I have a 22 mm black plastic mains water supply which is giving me around 9 litres of water per minute. The stop tap inside the house is fully on.

This seems low and I am looking at upgrading my boiler as it is too small to heat my detached house. But when you see boilers like the Worcester Greenstar Highflow 550CDi which has a flow rate of 25 litres a minute, it's hard to see how my supply would work with a boiler anywhere near close to this flow rate.

Is this something that is easy to fix please?
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