Emergency Boiler Repair in London
No heating on a freezing night, hot water gone, or the pressure needle on the floor again? Call 07861 933265 or WhatsApp a photo of the boiler’s display. A person answers at any hour, there is no call-out fee, and the price is the same at 2am as at 2pm.
Before you call: note any fault code or flashing light on the display, check the pressure gauge, and look under the boiler for drips. If water is leaking, turn the heating off at the controls and put a bowl under it. Those three things tell us a lot before we arrive.
Quick checks that sometimes fix it
- Power and controls. Is the boiler’s switch or fused spur on, and is the thermostat or timer actually calling for heat? A flat battery in a wireless thermostat stops more boilers than you would think.
- Pressure. Most sealed systems sit around 1 to 1.5 bar when cold. Well below that and the boiler locks out to protect itself.
- One reset, not five. Press reset once, as the manual says. If it locks out again straight away, leave it: repeated resets can hide the real fault.
- A cold snap. If it stopped the morning after a hard frost, see frozen pipes first.
What we repair
Boiler faults come down to a short list of parts more often than not: a pump that has seized, a diverter valve stuck between heating and hot water, a pressure relief valve that has started to pass, an expansion vessel that has lost its charge, or a leak at a joint inside the case. We find which it is, tell you what it will take before we go further, and fix it on the visit when the part is to hand. If the boiler itself is past repairing, we say so plainly.
Pressure that keeps falling with no boiler fault usually means a leak elsewhere in the system. A leaking radiator or valve is the most common culprit, and our central heating repair page covers the rest of the system.
Heating out in a cold house
If the house is getting dangerously cold, keep one room warm with a safe electric heater, close the doors, and keep the elderly and babies in it until the heat is back. If you have an immersion heater on your cylinder, switch it on for hot water in the meantime. For more on what to look at first, read boiler not working: common faults and boiler losing pressure. If there is water on the floor under it, start with boiler leaking water.
The rate
No call-out charge. £110 for the first hour, £45 for each half hour after, plus parts, any day and any hour across London.
Questions people ask
Is a boiler breakdown an emergency?
It is when there is no heat in a cold spell and someone in the house is elderly, very young or unwell, or when water is leaking from the boiler or its pipes. If it is mild and you have an immersion heater for hot water, a booking later in the day may do, at the same rate.
The pressure gauge keeps dropping. Can I just top it up?
Topping up to the level your boiler's manual gives gets the heating back for now. If it falls again within days, the water is going somewhere, usually a weeping radiator valve, a failing pressure relief valve or a tired expansion vessel, and that needs finding before it damages anything.
My boiler stopped in the first frost of the year. What is the likely cause?
On a condensing boiler, a frozen condensate pipe outside is the usual reason, and the boiler shows a fault until it thaws. Our frozen pipes page explains what to do, and if it does not come back after a reset, call us.
How much does an emergency boiler repair cost?
There is no call-out charge. It is £110 for the first hour, then £45 for each additional half hour, plus the cost of any parts, and the rate is the same at night and at weekends.
Can you come out tonight?
Yes. Ring 07861 933265 at any hour and a person answers. We tell you on that call roughly when an engineer can be with you, so you can decide.