Boiler Today
Boiler Servicing & Repairs in Surrey, Sussex & Surrounding Areas
Your heating should just work. When it doesn't — or when it needs its annual check — we're the local team Surrey and Sussex homeowners call first.
Gas Safe registered. 36 years of experience. Straightforward from start to finish.
Get a FREE QuoteGas Safe Registered
Reg No. 575142 — fully certified engineers
Annual servicing protects warranty
Expert Care
Keeping Surrey & Sussex Homes Warm for Over 36 Years
We're not the biggest company in the area. We're just the most trusted one on your street.
Boilers On-Demand has been servicing and repairing boilers across Surrey and Sussex since 1988. Gas Safe registered (No. 575142), fully certified, and built entirely on word-of-mouth from homeowners who'd recommend us without hesitation.
Annual Service
What happens during your annual boiler service?
During boiler servicing, our engineer will conduct thorough inspection and maintenance procedures to ensure the optimal performance and safety of the boiler:
Annual Boiler Servicing
One hour a year. That's all it takes to keep your boiler safe, efficient, and fully under warranty. Our Gas Safe engineers carry out a complete inspection pressure testing, flue and combustion analysis, carbon monoxide checks, internal component review, and a full function test. Everything is documented. Everything explained. Vaillant, Baxi, and most leading manufacturers require annual servicing by a registered engineer to keep your guarantee active. We make sure that box is ticked properly.
Boiler Repairs
Something's wrong. You want it fixed today, not next week. We offer same-day callouts across Surrey and Sussex, covering all major brands Vaillant, Worcester Bosch, Baxi, Glow-worm, and more. We diagnose quickly, quote clearly, and fix it right the first time.
Why annual service matters
Regular maintenance reduces breakdown risk by up to 85% and ensures your boiler runs at peak efficiency, saving you up to £125–£490 annually on energy bills.
- Extends lifespan by 5+ years
- Protects manufacturer warranty
Gas Safe Registered
Boilers On-Demand is a Gas Safe registered business (575142) with over 36 years of experience across Sussex and Surrey. Locally based, professionally run, and genuinely easy to work with.
Choosing a Gas Safe registered engineer means every job is carried out by someone who is fully qualified, regularly assessed, and legally approved to work on gas appliances. You're welcome to verify our registration on the official Gas Safe Register before we visit. We give you the full cost upfront — no call-out charges, no day-of surprises, just honest, local pricing from a team that's been doing this long enough to know that trust matters more than a cheap headline rate.
Experienced Engineers
Boilers On-Demand is backed by a team of engineers with over 36 years of hands-on experience across Sussex and Surrey. That depth of experience means every job is completed accurately, efficiently, and to the highest standard — first time, every time.
For homeowners, this means reliable advice, clear communication, and the confidence that comes from knowing your property is in the hands of engineers who genuinely know what they're doing.
What You Get Every Time
Gas Safe Registered
No. 575142 Every job legal, certified, and done to the highest standard.
36+ Years Local Experience
We know these homes. We know these systems. It shows.
All Major Brands
Vaillant, Baxi, Worcester Bosch, Glow-worm — whatever you have, we know it.
Same-Day Callouts
Because a cold house can't wait.
Upfront Pricing
Always. No exceptions.
30+ Five-Star Reviews
Our customers say it better than we ever could.
Boiler Repairs
Something's wrong. You want it fixed today, not next week.
We offer same-day callouts across Surrey and Sussex, covering all major brands — Vaillant, Worcester Bosch, Baxi, Glow-worm, and more. We diagnose quickly, quote clearly, and fix it right the first time.
From minor faults to complex breakdowns, our Gas Safe registered engineers have seen — and fixed — virtually every type of boiler fault across every major make and model.
Warning Signs
Signs your boiler needs attention
Catch these early and a small call-out today saves a much bigger bill tomorrow:
- Pressure dropping more than usual
- Heating or hot water slow to come through
- Banging, gurgling, or whistling sounds
- Pilot light needing frequent relighting
- Error codes on the display
- Water around the unit
- Radiators heating unevenly
Call us on 01903 802395 — we'll talk it through with you straight away.
Request a RepairEmergency Breakdown?
Call 01903 802395 now
Honest Pricing. No Surprises.
Transparent fixed pricing for all our servicing and repair work.
Annual servicing typically runs £80–£120. For repairs, costs depend on the fault and parts involved.
Either way, you'll receive a clear quote before anything starts. What we quote is what you pay.
If you're weighing up whether to service, repair, or replace we'll give you an honest steer, not a sales pitch.
● FAQs
Frequently Asked Questions
Everything you need to know before booking.
How much does boiler repair cost in Surrey?
Repair costs depend on the fault and parts needed. We provide a fixed price quote after diagnosis. Contact us for current rates.
How quickly can you attend for emergency boiler repair?
We offer same-day callouts where possible across Surrey and Sussex. Call 01903 802395 and we will dispatch an engineer at the earliest opportunity.
What's included in an annual boiler service?
Pressure test, flue and combustion checks, carbon monoxide inspection, internal component review, full function test, and written documentation. Takes around 45 minutes to one hour.
How often should I service my boiler?
Annual servicing is recommended to keep your boiler safe, efficient, and to maintain manufacturer warranty coverage.
Do you repair all boiler brands?
Yes. We repair all major brands including Vaillant, Worcester Bosch, Baxi, Glow-worm, Grant, and Ideal. If you are unsure, call and we will confirm.
Are your engineers Gas Safe registered?
Yes. All our engineers are fully Gas Safe registered and can be verified on the official Gas Safe Register. Gas Safe registration is a legal requirement for all boiler work.
Should I repair or replace my boiler?
If your boiler is over 15 years old or repairs are expensive, replacement may be more cost-effective. We advise after diagnosis and can discuss finance options for a new installation.
● AREAS WE COVER
Areas We Cover Across Surrey and Sussex
Our engineers are based locally and cover the full breadth of East and West Sussex, as well as Surrey.
Worthing | Horsham | Guildford | Crawley | Brighton | Chichester | Bognor Regis | Littlehampton | Haywards Heath | East Grinstead
Not on the list? Call us, we will most likely cover you.
Ready When You Are
Annual service. Emergency repair. Or just a question you'd like answered honestly.
Our Gas Safe engineers cover Surrey and Sussex every day. Whether it's a routine check or a sudden breakdown, we're here to help.
Request Your Free Quote
Complete the form below for a same-day response
30+
GOOGLE REVIEWS
1,000+
NEW BOILERS INSTALLED
36+
YEARS EXPERIENCE