Oil Boiler Repair

£150 to £500+VAT

OFTEC-registered oil boiler repair. Engineer on site within 2 hours. Common parts on the van. No call-out fee. 1-year parts guarantee.

OFTEC registeredOn site within 2 hoursNo call-out fee1-year parts guaranteeCommon parts on the vanNo work over budget without your approval

Oil boiler repair pricing — 2026

Standard call-out and travel included. Prices exclusive of VAT. The price you agree is the price you pay.

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Repair (typical)

£150 to £500

+VAT — diagnosis dependent

Annual service

£120 to £180

+VAT

Installation

£2,500 to £5,000+*

+VAT

Call-out fee

FREE

Travel always 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.

1

Call or book

Phone answered within 20 minutes. Free quote form.

2

Engineer arrives

Gas Safe engineer on site within 2 hours.

3

Free diagnosis

We check, explain, and quote a fixed price.

4

Work done

Most jobs completed first visit — common parts on the van.

5

Guaranteed

1-year parts guarantee on everything we fit.

Where we cover

We work from our Watford HQ across Hertfordshire and North London. Further afield is quoted separately.

Primary service areas

Oil boiler repair FAQs

How much is an oil boiler repair?

£150 to £500 plus VAT, diagnosis dependent. Common repairs: burner service, nozzle replacement, pump fault, ignition electrode, flue sensor, pressure loss. Fixed price quoted before work starts.

Common oil boiler faults?

Burner lockout, failed ignition, noisy pump, smoke from the flue, pressure loss, oil leaks, blocked nozzle, failed photocell. Many show a fault code — photograph it before calling.

Are you OFTEC registered?

Yes — all oil boiler work carried out by OFTEC-registered engineers.

Can you repair same day?

Usually yes. We carry common oil boiler parts (nozzles, filters, photocells, pressure switches) on the van. Specialist parts can usually be sourced same-day.

My boiler is smoking / smells of oil — is it safe?

No — turn it off at the isolator, ventilate the space, and call us. Safety issues (flue leaks, combustion problems, oil leaks) need immediate attention from an OFTEC engineer.

Is there a call-out fee?

No. Standard call-out and travel always included.

Do you guarantee the work?

1-year parts guarantee on everything we fit. Workmanship backed by our standards.

Oil boiler not working?

Engineer on site within 2 hours. Phone answered within 20 minutes. No call-out fee.