Boiler repair · Croydon
No heating, no hot water, dripping pipes or a fault code you can’t make sense of? Tell us what it’s doing and a Gas Safe engineer will call you back, often with something to try before we even arrive.
Gas Safe registeredNo. 567789Smell gas? Don’t wait for us. Call the National Gas Emergency Service, free, 24 hours.
0800 111 999Common faults
The faults we’re called out to most in Croydon, what usually causes them, and what’s safe to check yourself first. Never remove the boiler’s casing: only a Gas Safe engineer should work inside it.
Pressure dropping below 1 bar usually means a leak somewhere in the system, a failing pressure relief valve or a flat expansion vessel.
Try first: Top it up to about 1.5 bar using the filling loop, following the instructions in your boiler’s manual. If it drops again within days, it needs looking at.
On a combi this is often the diverter valve or a limescale-blocked heat exchanger. South London’s hard water doesn’t help.
Try first: Check the hot water isn’t turned down or switched off on the boiler’s controls.
Commonly a thermostat or programmer fault, a stuck diverter valve, or a failed pump or motorised valve.
Try first: Turn the room thermostat up a few degrees and check the programmer is calling for heat.
Leaks come from worn seals, a failing pump, a corroded heat exchanger or the pressure relief valve discharging.
Try first: Catch the drip, keep it away from electrics, and don’t take the casing off. Call us.
Usually sludge or limescale in the heat exchanger, air in the system, or a pump problem.
Try first: Bleed any radiators that are cold at the top, then re-check the pressure afterwards.
Every make has its own codes. Ignition faults, low pressure and flame-loss codes are the most common we see.
Try first: Note the code, then press reset once. If it locks out again, don’t keep resetting it. Send us the code.
If it stops during a frost, the condensate pipe running outside has very likely frozen and blocked.
Try first: Pour warm (not boiling) water along the outside pipe to thaw it, then reset the boiler.
Faulty ignition electrodes, a gas valve problem, a blocked flue or a supply issue.
Try first: Check other gas appliances work and that the meter has credit if it’s prepay.
Repair or replace
Not every boiler should be repaired. If yours is well past ten years old, the part is expensive or discontinued, or it’s the third call-out this winter, putting the money towards a replacement may be the better deal. We give you the repair price first and let you decide.
And if it is worth fixing, an annual service is the best way to keep it that way. Most breakdowns we see in January started as something a service would have caught in September.
Got a fault code? We have guides for Worcester Bosch, Vaillant, Ideal and Baxi boilers. No heat today? See emergency boiler repair.
How it works
Pick the symptoms, the make and any fault code in the form, or call us. A photo of the display saves a lot of guesswork.
An engineer talks it through, tells you if there’s anything safe to try yourself, and books a visit if it needs one.
We find the fault, tell you what it needs and what it costs before doing anything. If a part has to be ordered, we tell you how long it will take.
Before we leave we check the boiler is burning and venting safely, and tell you honestly if it’s worth repairing again.
FAQ
All the common makes you’ll find in Croydon homes, including Worcester Bosch, Vaillant, Ideal, Baxi, Viessmann, Glow-worm, Potterton and Vokera. Pick the make in the quote form so we can check parts before we arrive.
Call the manufacturer first. Most warranties require their own engineers to carry out repairs, and a third-party repair can void the cover. If the warranty has run out or the manufacturer can’t help, we can.
Yes. Choose “Today, it’s an emergency” in the form or ring us, and tell us if anyone at home is elderly, very young or unwell so we can put them first.
Sometimes. A cheap, common part on a reliable boiler is worth fixing at almost any age. A major part on an older boiler often isn’t. We tell you the cost of the repair before doing it, and if a replacement makes more sense we’ll say so.
Call the National Gas Emergency Service free on 0800 111 999, any time. Turn the gas off at the meter if you can, open doors and windows, and don’t use switches or anything that could cause a spark. Once it’s been made safe, we can repair the fault.
Pick the symptoms, the make and any fault code. A Gas Safe engineer will call you back.