Boiler Repairs
A boiler repair is work to get heat or hot water back after a fault — not the same as an annual service. Any work on a gas appliance in the UK must be done by a Gas Safe registered engineer. If you can smell gas, hear a leak, or a carbon monoxide alarm is sounding, leave the property and call the National Gas Emergency Service on 0800 111 999. For the longer decision — manufacturer cap versus a local engineer, and when replacement wins — see boiler repair.
What you can check first
These checks do not involve opening the gas appliance. If any of them restore heat, you may not need a call-out.
- Confirm the programmer or thermostat is calling for heat, and that TRVs on radiators are open.
- Look at the boiler display. A lockout or fault code is useful for the engineer — see our fault codes A–Z.
- Check system pressure on a sealed system. Many combis want about 1–1.5 bar when cold. Filling loops are usually on the underside of the boiler; if you are not sure, leave it. Guide: boiler pressure.
- Use the manufacturer reset only as the instructions describe. Repeated resets without a repair can mask a real fault.
- Frozen condensate pipes are common in cold weather. Thawing from the outside with warm water is a homeowner job; do not use boiling water on plastic pipe.
When to call an engineer
Call a Gas Safe engineer if there is no heat or hot water after those checks, a persistent fault code, a leak from the boiler, ignition failure, or you are not confident topping up pressure. Same-day attendance matters most in winter, for vulnerable occupants, or where a leak is causing damage.
A repair is not a substitute for a service. A well installed, set-up, and serviced boiler fails less often. If the appliance is old, beyond economical repair, or still under manufacturer warranty, say so when you book — warranty work often has to go through the maker, not a third-party call-out. Out of guarantee, several makers sell a one-off fixed-price repair that can beat a multi-part independent quote.
Emergency Hero
Emergency Hero is a UK 24/7 call-out service based in Manchester. They match you to a local tradesperson from a national network for heating and gas, plumbing, electrics, and drainage — including no heat, no hot water, leaks, and blocked drains. They say 87% of emergency call-outs are attended within 90 minutes, and the rest the same day unless you agree otherwise.
A booking agent agrees the price before anyone is sent. That fee covers attendance and the first hour of labour; extra time or parts are quoted separately. Ask for a Gas Safe registration number for heating work, and keep the written quote they text you.
Affiliate link — we may earn a commission if you book. You pay Emergency Hero their price; read their terms before you confirm.
Providers listed on this page have been chosen because they have strong brand reputations. MyBoiler.com is not responsible for, and accepts no liability for, their products, services, workmanship, or any loss or damage arising from your dealings with them. You contract with the provider under their own terms. Affiliate disclosure.