Gas Safe registered · Brownhills

Boiler Losing Pressure in Brownhills

Boiler losing pressure in Brownhills? We find the leak rather than refilling it. Clayhanger, Walsall Wood, Pelsall and Shire Oak.

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Topping the pressure up is a five-second job, which is exactly why it gets done for years instead of the leak being found. The ex-council semis and bungalows around Brownhills tend to have long horizontal pipe runs and plenty of joints, and a system that loses pressure slowly is losing it somewhere along them — or out of the relief pipe on the outside wall, which is the version that costs you nothing but a part.
What's involved

Boiler Losing Pressure in Brownhills, done properly

Start outside

A wet or limescaled copper pipe poking through the wall means the expansion vessel or the relief valve, and nothing under your floor is wet. Worth checking before you worry.

Long runs, more joints

The post-war stock here was plumbed in long straight runs under floors and through cupboards. More joints means more places to weep, and they are traceable.

Bungalows hide it well

On a bungalow the pipework often runs in the void with no room below to show a stain, so a pressure test on the boiler side tells us more than looking does.

Stop the refill habit

Fresh water every month rusts the system from the inside. Finding it once is cheaper than a pump, a valve and a power flush later.

Good to know

Boiler Losing Pressure — your questions

It only drops in winter. Is that normal?

It is common, because the system runs hotter and longer, so a weep that hides in summer starts showing. It is still a leak, just a seasonal one you can see.

Can I keep topping it up until spring?

You can, and plenty of people do. The risk is that a slow weep under a floor gets months to do damage you cannot see, and that the constant fresh water sludges the radiators.

What if you cannot find it?

Then we say so rather than start lifting floors on a hunch. Isolating the boiler from the system narrows it to one side, and that alone usually settles what to do next.

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