A puddle under the boiler, or the pressure dropping to zero, won't fix itself, and it can quickly cause real damage. Our Gas Safe engineers are rarely more than an hour away.
Tell us what's happening and we'll call you straight back. No obligation, no call-out fee.
Rated excellent on Trustpilot & Google by 1,000+ customersThanks, we've got it.
We'll call you straight back. For an urgent leak right now, call 020 3633 1526.
★ 9.09/10Checkatrade689 reviews
★ 4.9TrustATrader95 reviews
★★★★★Trustpilot 4.6336 reviews
⏱ 1-hour responserarely more than an hour away
Most leaks are a worn valve, a loose joint or a pressure fault, a repair, not a replacement. We give you an honest, fixed-price diagnosis upfront, so you know exactly what it costs before we touch a thing. No pressure, no scare tactics, no surprise bills.
For over 17 years we have kept North & Inner London warm. When your boiler leaks, a friendly, fully qualified Gas Safe engineer comes to you, rarely more than an hour away, in a van stocked to fix it there and then.
If you're seeing any of these, don't leave it, a small leak gets expensive fast.
Water pooling under the boiler, or a constant drip that won't stop whether it's hot or cold.
The gauge keeps falling to zero and you're topping it up every day, usually a leak somewhere.
Cold radiators or no hot water at the worst possible time, often linked to a leak or fault.
Corrosion, damp patches or staining around the boiler or pipework that is slowly getting worse.
Three quick steps to limit the damage, then leave the rest to us.
Switch it off at the programmer or the fused spur to stop it running while it leaks.
If water is flowing freely, turn off the supply at the stopcock to limit the mess.
Catch the drip, mop up any standing water, and keep it away from sockets and electrics.
We'll talk you through it and get a Gas Safe engineer out to you, usually within the hour.
The good news: most leaks are a straightforward, affordable repair, not a new boiler.
A worn pressure relief valve is one of the most common causes, and one of the cheapest to put right.
Pipe joints and fittings work loose or corrode over time. A quick fix once we trace the source.
If the system pressure is too high it forces water out, usually a simple adjustment or part.
Perished seals or a leaking pump are common with age and straightforward to replace.
Only occasionally is it a cracked heat exchanger, the one repair that can mean a replacement. If it is, we'll show you exactly why, honestly.
Checkatrade 9.09/10 · TrustATrader 4.9 · Gas Safe registered
"Ricky has done an amazing job with the boiler and the leaking water pipes. The boiler was noisy and inefficient, and he resolved all the issues professionally and efficiently… I couldn't be happier with the service."
"Lovely person called to book the appointment, Ricky the engineer was here in under 3 hours. Respectful, clean and explained the process as he went along. Fixed the fault quickly and efficiently."
"They called me straight away, we organised a visit within 2 hours, which was actually closer to an hour… the engineer Dan was incredibly helpful and friendly and sorted the issue efficiently. Massive thumbs up all round."
"Clear about their terms and prices from the outset… the engineer arrived when he said he would and carried out the work quickly and without leaving a mess."
"June was very professional and polite at all times, and turned up on time when expected. Area left clean and all working. Will definitely use again."
"Wayne was absolutely fantastic, he came in record time and fixed my gas leak swiftly. I am very happy with the service I have received today. Thank you Mayfair Plumbers and team!"
| What matters when your boiler leaks | Mayfair Plumbers | Many others |
|---|---|---|
| Gas Safe registered engineers | ✓ | Not always |
| Fixed price agreed before work starts | ✓ | Quoted after |
| No call-out fee | ✓ | £70–£150 |
| Rarely more than an hour away | ✓ | Next day |
| Repair-first, no pushy new-boiler upsell | ✓ | Common |
| 12-month guarantee on the work | ✓ | Varies |
Tell us what's happening. We'll give you advice and book you in, often same day.
A Gas Safe engineer comes to you, rarely more than an hour away across North & Inner London.
We find the cause and tell you the fixed cost to fix it upfront. No surprises, no obligation.
We fix the leak, tidy up, and back the work with a 12-month guarantee.
We repair all major makes: Worcester Bosch, Vaillant, Baxi, Ideal, Bosch and more.
Call and speak to a real person any hour, or send your details and we'll call you straight back with honest, fixed-price advice. No call-out fee.
Call 020 3633 1526We'll call you straight back. No obligation, no call-out fee.
Rated excellent on Trustpilot & Google by 1,000+ customersThanks, we've got it.
We'll call you straight back. For an urgent leak right now, call 020 3633 1526.
Gas Safe engineers across the boroughs, with same-day call-outs. Not sure if we cover you? Just call.
Don't wait for it to get worse. Call and we'll get to you today.
