For pros

Boiler repair cost in London (2026)

Prices reviewed November 2026

The typical price in London is £80 to £120 (boiler service). Boiler repairs are priced by the fault and the part, and only a Gas Safe registered engineer can work on gas boilers.

💷 Typical boiler repair prices in London

Typical London prices in 2026. A guide only; your quotes will depend on the job.
Boiler service£80 to £120
Boiler repair£100 to £350
Call-out and first hour£80 to £150

What changes the price

  • The fault: a sensor is cheap, a heat exchanger is not.
  • The make and age of the boiler, and the availability of parts.
  • Call-out and out-of-hours charges.
  • Whether the repair is worth it, or a replacement is better.
  • Safety checks the engineer must carry out.

How long it takes

Many boiler faults are fixed in one visit of one to two hours. If a part has to be ordered, expect a return visit a few days later.

How to pay less

  • Service the boiler every year to catch faults early.
  • Have the make, model and error code ready when you book.
  • Ask for a repair and a replacement price if your boiler is old.

Before you hire

  • Ask for the engineer's Gas Safe register number and check it on the Gas Safe Register.
  • Ask them to show their Gas Safe ID card when they arrive.
  • Ask for the call-out fee, and whether it is included if you go ahead with the repair.
  • Ask whether parts carry a guarantee, and for how long.

💬 Questions about boiler repair costs

Why does it have to be a Gas Safe registered engineer?

It's the law. Only Gas Safe registered engineers can work on gas boilers. When you choose boiler repair, we send your request to Gas Safe registered engineers.

How fast can someone come out in London?

No heating in winter is urgent. Choose "Urgently, within 48 hours" and local engineers will prioritise it.

Should I repair or replace my boiler?

If it's under 10 years old, a repair usually makes sense. For older boilers with repeat faults, an engineer can talk you through replacing it.

When should I replace rather than repair?

If the boiler is more than about ten years old and a repair is a large share of the price of a new one, replacing it can be the better deal. An engineer can advise.

Get boiler repair quotes

Use these figures to plan your budget, then compare written quotes for the same work. Your price depends on the job, the size of your home and how soon you need it. Tell us what you need to request up to 3 local quotes; responses depend on availability.

Related guides