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Boiler Repair & Service

Get Your Free Boiler Repair & Service Quote

Fast, reliable boiler repairs and annual servicing from Gas Safe registered engineers. We fix breakdowns, keep your warranty valid, and get your heating back on quickly.

  • Fast response for breakdowns – no heat, no hot water
  • Fixed-price annual servicing with a full report
FASTResponse times
FIXEDPrice servicing
GAS SAFERegistered engineers
ALLMakes & models

Recommended by 100% of our customers

Why Choose Apex

Why Choose Apex Gas & Heating For Boiler Repair & Service

Fast response when your boiler breaks down
Fixed-price annual servicing, no hidden extras
Gas Safe registered engineers on every visit
We work on all major makes & models, gas and LPG
Full service report & honest advice every time
Local, family-run team – not a call centre

Accreditations

Our Accreditations

Accredited installers for the UK’s leading boiler manufacturers, and fully Gas Safe registered.

Baxi Approved Installer
Vaillant
Glow-worm Accredited Installer
Worcester Bosch Installer
Gas Safe Register

The Benefits

Benefits Of Regular Servicing & Prompt Repairs

Fewer Breakdowns

Regular servicing catches small issues before they turn into costly, disruptive breakdowns.

Extended Boiler Lifespan

A well-maintained boiler lasts longer, protecting the investment you’ve already made in your heating.

Keeps Your Warranty Valid

Most manufacturer warranties require annual servicing – we keep your paperwork and cover intact.

Lower Running Costs

A properly serviced boiler burns fuel more efficiently, helping keep your energy bills down.

Our Process

How Our Boiler Repair & Service Works

Whether it’s a breakdown or your annual service, here’s exactly what to expect.

1

Call or book online

Tell us what’s wrong, or book your annual service online in a couple of minutes.

2

Fixed-price quote

For repairs we diagnose the fault and confirm a fixed price before any work starts. Servicing is priced upfront.

3

Work carried out by Gas Safe engineers

Our engineers repair or service your boiler to manufacturer & industry standards, working cleanly and tidily.

4

Full report & honest advice

You’ll get a full written report and clear advice on anything to keep an eye on going forward.

Servicing & Repairs

Boiler Servicing & Repairs Overview

We service and repair gas, LPG and electric boilers of all makes and models across Sussex & Surrey. A typical annual service takes 30–45 minutes and includes a full visual and mechanical check, flue gas analysis, and a written report. For repairs, our engineers carry a wide range of parts to fix most faults on the first visit.

Engineer using a flue-gas analyzer during an annual boiler service

Annual Servicing

A full manufacturer-standard service, including safety checks, cleaning and a written report.

Engineer testing a boiler during a breakdown repair while customer looks on

Breakdown Repairs

Fast diagnosis and repair for no heat, no hot water, leaks, noises, and lockouts.

Kamco CF90 Powerflush machine connected to a radiator

Power Flushing

Clears sludge and debris from radiators and pipework to restore heating efficiency.

FAQs

Our Frequently Asked Questions

Answers to the questions we’re asked most about boiler repair & servicing. Can’t see yours? Just get in touch.

Why is regular boiler servicing important?

Regular servicing keeps your boiler running efficiently, reduces the risk of breakdowns, and ensures it operates safely. It also helps maintain your manufacturer warranty.

How often should I have my boiler serviced?

We recommend servicing your boiler every 12 months, in line with most manufacturers’ warranty requirements.

What does a boiler service include?

A visual and mechanical check of the boiler, flue, seals and safety devices, cleaning where necessary, and a full written report – typically taking 30–45 minutes.

How do I know if my boiler needs a repair?

Common signs include unusual noises, no heat or hot water, a dropping pressure gauge, or the boiler locking out. Get in touch and we’ll advise on next steps.

Is it better to repair or replace an older boiler?

For boilers over 10–15 years old, replacement can be more cost-effective if repairs become frequent. We’ll always give you an honest opinion, not just a sales pitch.

Do you service and repair boilers for landlords?

Yes – we provide servicing, repairs and Gas Safety Certificates (CP12) for landlords and letting agents across Sussex & Surrey.

Boiler Playing Up, Or Due A Service?

Get in touch today for a fast, fixed-price repair or to book your annual boiler service.