
Heating Engineer Callout
Gas Safe heating engineer for any heating fault. On site within 2 hours. Phones answered immediately, usually by an engineer. No separate call-out fee. Diagnostic time is charged at our labour rate, and a fixed price is quoted before any repair starts.
What a heating engineer fixes
Most heating problems fall into a handful of categories — boiler faults, radiator issues, thermostat or programmer failures, zone valve problems, pump wear, or system pressure loss. A Gas Safe heating engineer diagnoses which and fixes it properly.
Looking for a specialist? We have dedicated pages for boiler repair, boiler service, central heating systems, and emergency boiler repair.
Common heating engineer jobs
- Boiler fault diagnosis + repair
- Radiator repair / replacement
- Thermostat + programmer upgrades
- Zone valve failure
- Circulation pump replacement
- System repressurisation + leak repair
- Power flushing (sludge removal)
- Annual Gas Safe boiler service
Heating engineer pricing — 2026
No separate call-out or travel surcharge. Prices exclusive of VAT. Diagnostic time is chargeable at our labour rate (minimum one hour); any further repair work is quoted as a fixed price before it starts.
Labour rate
£89.50 to £148.50
+VAT per hour
Call-out fee
FREE
Standard call-out and travel included
All prices exclusive of VAT. Ranges reflect typical jobs. Final price quoted before any work begins.
How we work
Five steps. No surprises. No pressure.
Call or book
Phones answered immediately, usually by an engineer. Or use the online enquiry form.
Engineer arrives
Gas Safe engineer on site within 2 hours.
Diagnose + quote
We check the fault and quote a fixed price before any repair starts.
Work done
Most jobs completed first visit — common parts on the van.
Guaranteed
1-year parts guarantee on everything we fit.
Heating engineer FAQs
What does a heating engineer do?
A heating engineer diagnoses and repairs faults in your heating system — boiler issues, radiator problems, thermostat failures, zone valve faults, pump replacements, pressure loss, noisy operation, and cold spots. Gas Safe heating engineers are qualified to work on gas components; OFTEC engineers on oil.
How much does a heating engineer cost?
Our standard labour rate is £89.50 to £148.50 per hour +VAT (normal office hours; varies by location and problem type). Diagnosis is charged at this rate, minimum one hour, and the repair is then quoted as a fixed job price before it starts. No separate call-out fee on top.
How quickly can you attend?
On site within 2 hours. Phones answered immediately, usually by an engineer. We cover Watford, Hertfordshire, North London and Middlesex from our Watford HQ.
Is there a call-out fee?
No separate call-out fee. We don't add a travel or attendance surcharge. Time spent inspecting, testing and diagnosing the fault is chargeable at our labour rate (minimum one hour). We quote a fixed price for any further repair work before any of it starts, and you're under no obligation to approve additional repairs.
Are you Gas Safe registered?
Yes — Gas Safe registered for gas work, OFTEC registered for oil heating. We only carry out work we are qualified for.
Do you cover central heating systems?
Yes. See our dedicated page for <a href="/central-heating-engineers">central heating engineers</a> covering full system design, power flushes, and whole-system repairs.
What heating engineer jobs do you handle?
Boiler repairs, radiator repair/replacement, thermostat and programmer upgrades, zone valve failures, circulation pump replacement, system repressurisation, leak repairs, power flushing, and annual servicing. Full list on our services page.
Could the final price be more than the quoted range?
No — the price we agree after diagnosis is the price you pay. If while working we find an unforeseen issue requiring additional parts or time, we explain it, quote it separately, and only proceed with your approval. No work exceeding the original budget is undertaken without your consent.
Heating problem? We'll diagnose it.
Engineer on site within 2 hours. Phones answered immediately, usually by an engineer. No separate call-out fee; diagnosis is charged at our labour rate.