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Gas Safe Registered Engineers

Boiler Repair London —
Fast, Reliable, Gas Safe

All makes and models repaired by Gas Safe registered engineers. Same-day service available across all London boroughs.

Book a Boiler Repair020 3887 4364
Gas Safe RegisteredSame-Day Service12-Month GuaranteeNo Fix, No Fee*

4.9★

Rating

Same Day

Availability

Gas Safe

Registered

12 Months

Guarantee

Common Boiler Faults We Fix

Our engineers diagnose and repair all types of boiler problems

No hot water or heating
Strange banging, whistling or gurgling noises
Boiler pressure loss or low pressure warning
Pilot light keeps going out
Boiler displaying error or fault codes
Radiators cold or not heating evenly
Leaking or dripping boiler
Boiler keeps switching itself off

Our 4-Step Repair Process

Straightforward, transparent, and hassle-free

1

Diagnosis

Our Gas Safe engineer arrives and carries out a full diagnostic inspection to identify the fault accurately.

2

Fixed Quote

We give you a clear, upfront price before any work begins. No surprises, no hidden charges.

3

The Repair

We carry most common parts on the van. Most repairs are completed on the same visit.

4

12-Month Guarantee

All repair work is backed by our 12-month parts and labour guarantee for your peace of mind.

Transparent Pricing

No hidden fees. Quotes given before any work starts.

Diagnostic Inspection

Full fault diagnosis + written quote

£85

Common Boiler Repairs

Parts and labour included

£85 – £250

Pressure / PCB Issues

Plus parts if required

£120 – £200

Gas Valve Replacement

Parts + labour

£180 – £300

Parts (where required)

Shown upfront in your quote

Trade price + 20%

*Prices are estimates. A precise quote will be provided after diagnosis.

Boiler Broken Right Now?

Our emergency team is available 24/7. We aim to reach you within 2 hours.

Call 020 3887 4364Book Online

Frequently Asked Questions

How quickly can you get to me?
We offer same-day emergency appointments across all London boroughs. For non-urgent repairs, we typically have availability within 24–48 hours.
Do you work on all boiler brands?
Yes. Our engineers are trained on all major makes including Worcester Bosch, Vaillant, Baxi, Ideal, Potterton, Glow-worm, Viessmann, Intergas and more.
What is included in the £85 diagnostic fee?
The £85 covers a full diagnostic inspection of your boiler, fault identification, and a written quote for the repair. If you proceed with the repair, this fee may be deducted from the final bill.
Is it better to repair or replace my boiler?
If your boiler is under 10 years old, a repair is usually the most cost-effective option. If it's older than 10–12 years and breaking down frequently, a replacement A-rated boiler may save you more money long-term.
Are all your engineers Gas Safe registered?
Absolutely. Every Steadfast Heat Fix engineer is Gas Safe registered. You can ask to see their Gas Safe ID card on every visit — it's your legal right.

Ready to Book Your Boiler Repair?

Gas Safe engineers on call. Same-day appointments available.

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