Annual boiler servicing

We offer fixed-price servicing on gas and oil boilers. An annual service keeps the boiler running safely and efficiently, and most manufacturers require one every year to keep the warranty valid.

Engineer servicing a boiler with the front casing removed

When to call us

  • It has been more than 12 months since the last service
  • Your boiler warranty needs a yearly service record
  • The flame looks yellow or lazy instead of crisp blue
  • Black marks or soot around the boiler casing
  • You are a landlord and the gas safety certificate is due

What’s included

  • Visual check of the boiler, flue and surrounding area
  • Flue gas analysis to check combustion and carbon monoxide levels
  • Inspection and clean of key components where the manufacturer requires it
  • Check of gas pressure, safety devices, seals and the condensate pipe
  • System pressure and expansion vessel check
  • A written service record for your warranty

Why service every year

Safety comes first. A service checks the boiler is burning cleanly and not producing carbon monoxide.

It also protects your warranty, since most manufacturers make an annual service a condition of cover. And it is the cheapest way to catch a small fault, such as a weeping seal or a tired fan, before it becomes a winter breakdown. A boiler that is set up correctly also burns less gas.

Landlords: service and certificate in one visit

If you let a property, we can combine the boiler service with the annual landlord gas safety check, including the hob and any other gas appliances, in a single visit.

Boiler control panel with a blue digital display
Boiler pressure gauge reading just over 1 bar

Photographs from Green PHS jobs.

What customers say

“Lee and Mark were excellent, really helpful, efficient and tidy. Great communication from start to finish. We felt they went above and beyond to make sure that we got a really good new system in our house. I would definitely recommend them.”

Brandon Hakim, Google review

4.8

from 201 Google reviews

Read more reviews

Repairs, new boilers, annual servicing and gas safety, all by Gas Safe registered engineers.

Boiler servicing: common questions

How long does a boiler service take?

Around 45 minutes to an hour for most domestic boilers.

Do you service oil boilers?

Yes. We service both gas and oil boilers.

When is the best time to book?

Late summer or early autumn, before the heating goes on full time. Diaries fill up quickly once the weather turns.

Ask about boiler servicing

We reply the same working day. For an emergency, call 020 8050 5913 instead.

So we can check we cover your area.

Boiler make, what it is doing, any fault code, and when suits you.

We only use your details to reply about this job. See our privacy notice.

Call Lee. He picks up.

Tell him what is happening. If it is a quick fix, he will talk you through it for free. If not, we will get an engineer to you, usually the same day.

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