Annual Boiler Service

£90 to £140+VAT

Gas Safe registered annual boiler service. Keeps your warranty valid, your boiler safe, and your energy bills predictable. No call-out fee.

On site within 2 hoursPhone answered within 20 minutesNo call-out fee1-year parts guaranteeGas Safe registeredNo work over budget without your approval

What's included in our annual boiler service

Everything Gas Safe and your boiler manufacturer require to keep the warranty valid and the boiler running safely and efficiently.

We service combi, system, and conventional boilers across all major UK brands. Price varies slightly by boiler type and access — we confirm the exact figure before we book you in.

Standard service includes

  • Visual inspection of boiler + flue
  • Combustion analyser readings (efficiency)
  • Flue gas and safety testing
  • Gas pressure check
  • Boiler controls + thermostat check
  • Water pressure + expansion vessel check
  • Components cleaned where accessible
  • Signed Gas Safe service report for warranty

Boiler service pricing — 2026

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

This page

Annual service

£90 to £140

+VAT — combi/system/conventional

Boiler repair

£120 to £450

+VAT if service finds a fault

Labour rate

£89 to £168.50

+VAT per hour

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

Boiler service FAQs

How often should a boiler be serviced?

Once a year. Gas Safe and every major boiler manufacturer recommend an annual service to maintain warranty, combustion efficiency, and safety. An unserviced boiler typically fails far sooner.

How much does a boiler service cost?

Our boiler service is £90 to £140 plus VAT, depending on boiler type (combi, system, or conventional). The price we quote is the price you pay — no call-out fee, no hidden extras.

What is included in the service?

Full visual inspection, combustion analyser readings, flue test, gas pressure check, controls test, safety checks, and a signed Gas Safe service report for your warranty records. We clean any accessible components and flag anything that will need attention soon.

How long does a boiler service take?

Typically 45 minutes to 1 hour for a standard combi or system boiler. Older conventional boilers or awkward installations can take a little longer. We will tell you up-front if we expect it to exceed that.

Are you Gas Safe registered?

Yes. All gas work is carried out by Gas Safe registered engineers. Our Gas Safe ID is available on request. We are also OFTEC registered for oil boiler servicing.

Do you service all boiler brands?

Yes — all major UK domestic boiler brands including Vaillant, Worcester Bosch, Baxi, Ideal, Viessmann, Potterton, Glow-worm, Main, Alpha, Ferroli and others.

Is there a call-out fee?

No. Our standard call-out and travel are always included in the price. Further afield is quoted separately before we book.

Could the final price be more than the quoted range?

For a standard boiler service, no — the price we agree is the price you pay. If the service reveals a fault needing separate repair, we explain it clearly, quote the repair separately, and only proceed with your approval.

Book your annual boiler service

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