07474 626581: one number, answered 24 hours a day, whether water is coming through the ceiling right now or you just want a straight answer before booking. Emergency Boiler Repair - Honest Plumber Hornsey is at 83 Lightfoot Road, London N8 7JF, and the partner companies we match you with serve Hornsey, Crouch End, Harringay and Wood Green. This page sets out what happens on the call and what to do while you wait.
What Happens When You Call
A person answers and asks what is happening, where you are and whether water is still running. That takes a few minutes. From there we look for the partner company that can reach N8 soonest and suits the fault, and phone you back. We then text you the company's name before anyone arrives.
Finding and Closing Your Stopcock
Turn the stopcock clockwise until it stops, then open the cold taps to drain the pipes. In Hornsey's converted terraces it is usually under the kitchen sink or in a hall cupboard. Look for the boundary valve in the pavement if the internal one is seized, and tell us on the call.
Switch Off the Heating Too
If a heating pipe or radiator is the source, switch the boiler off before you drain anything. A boiler running with no water in the circuit can be damaged.
Gas Instead of Water
If you smell gas, open the windows, leave the property and ring the National Gas Emergency Service on 0800 111 999 from outside. Do not use switches or phones indoors. Only after the gas has been made safe should you ring us.
No Heating or Hot Water
Check the pressure gauge, the programmer and the thermostat, and look for a fault code. In cold weather a frozen condensate pipe is a common culprit. Our boiler breakdown repair page explains the usual faults, and a boiler service helps prevent them.
Is It Your Pipe or the Thames Water Main?
Thames Water is renewing more than 8 km of Victorian mains on 29 Crouch End streets from February 2026, and the July 2021 flash floods showed how quickly Hornsey and Wood Green drains are tested. If neighbours have lost pressure or the street is flooding, the problem may be the network's. A partner company can check the pressure at your stopcock.
A Written Quote, Then the Work
Diagnosis comes first, then the written quote, then the work. The partner company sets out the price before they begin. See how the process works and the all ten services.
The Neighbourhoods We Serve
If your address is just outside, say so on the call and we will confirm who can reach you. Whatever is happening, the number stays the same: 07474 626581. Head back to the home page, read about us or see how how reviews work work.
Frequently Asked Questions
What is the quickest way to reach you in an emergency?
Call 07474 626581, which is answered 24 hours a day, every day of the year. Tell us what is happening, where you are and whether water is still escaping or anyone is vulnerable. We then find the partner company that can reach you soonest and call you back with a realistic time. The online form is fine for non-urgent jobs, but a phone call is always faster for an emergency.
What happens after I call?
We take down the fault and your address, check which independently owned partner company can reach N8 soonest and has the right skills, and phone you back, usually within minutes. When you agree, we text you the company's name and details before anyone arrives. They give a written quote after seeing the fault, do the work and invoice you directly. We stay on the line as your single point of contact.
Where is your address?
Our address is 83 Lightfoot Road, London N8 7JF, in Hornsey. The work itself is done by independently owned partner companies who travel to you, so you do not need to visit. Please call or send the form instead of calling in person. We cover N8, with Crouch End, Harringay and Wood Green also served.
How do I find my stopcock?
In most Hornsey terraces the internal stopcock sits under the kitchen sink or in a cupboard near the front door, and in some flats it is in a bathroom or hallway cupboard. Turn it clockwise until it stops, then open the cold taps to drain the pipes. If you cannot find it, look for the boundary stopcock in a small cover in the pavement outside, and tell us when you call.
What should I do if I smell gas?
Do not use switches, flames or phones indoors. Open doors and windows, turn off the gas at the meter if you can do so safely and leave the property. Call the National Gas Emergency Service on 0800 111 999 from outside. Only after the gas has been made safe should you call us for follow-up plumbing or heating work. A gas smell is never something to book a visit for.
My boiler has stopped. What can I check before calling?
Check the pressure gauge, which should read roughly 1 to 1.5 bar when cold, and that the thermostat and programmer are calling for heat. On a freezing night, look for a frozen condensate pipe. Note any fault code on the display, and try not to reset the boiler repeatedly. If it still will not start, call 07474 626581 and describe what you see.
Is the problem mine or Thames Water's?
Anything inside your property and the supply pipe up to the boundary is generally your responsibility, while the main under the road belongs to Thames Water. If neighbours have lost pressure too, or the street is flooding, the fault may be theirs. Thames Water is renewing Victorian mains on 29 Crouch End streets from February 2026, so short disruptions are possible there. We help you work out which it is.
Do you cover my area?
The core area is N8 around Hornsey High Street, with Crouch End, Harringay and Wood Green served in detail, and the network reaches nearby postcodes such as N4, N15 and N22. Give us your postcode when you call and we will tell you honestly whether a partner company can reach you. See the pages for Crouch End's villas and terraces, Harringay's converted terraces and Wood Green's Noel Park streets.
How much will it cost?
Nothing is priced on the first call. The partner company quotes in writing after they have seen the fault, before any work starts. As a guide, London emergency call-outs often cost £90 to £120 with labour at £75 to £95 an hour, and most boiler repairs fall between £80 and £350. Those are published ranges, not our quotes, and the written figure is what counts.
Who do I pay, and do you charge a fee?
You pay the partner company directly once the work is done. We do not take payment, issue invoices or add a fee on top. If a bill differs from what was agreed, speak to the company first and then call us if it is not resolved. We chase it on your behalf, because we want you to have one number that stays on the job. Our terms cover the detail.
