An annual boiler service by a Gas Safe registered engineer is the single most important thing you can do to keep your boiler safe, efficient, and under warranty. Whitebox Heating provides thorough boiler services across the full RH and BN postcode area – typically completed within 60–90 minutes.

We check gas pressure, flue condition, combustion levels, and all safety devices to make sure your boiler is operating safely.
We measure combustion efficiency and advise on any adjustments that could reduce your gas consumption and lower your energy bills.
Most boiler manufacturers require an annual service by a Gas Safe engineer to keep the warranty valid. Our service certificate is accepted by all major brands.
We spot developing faults before they become expensive breakdowns, saving you money and the inconvenience of a midwinter failure.
We provide CP12 Gas Safety certificates for landlords, required annually for all rental properties with a gas boiler.
We complete your boiler's service record and issue a service certificate, providing full documentation for warranty claims and property sales.
Call us or use our contact form to book a convenient appointment – including evenings and weekends.
Our Gas Safe engineer arrives on time with all required test equipment.
We carry out all safety checks, efficiency tests, and cleaning in 60–90 minutes.
We complete your service record, issue a certificate, and advise on any recommendations.
We provide boiler servicing services across West Sussex, East Sussex, and Surrey. Click your area for a location-specific page.
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Annually. Most boiler manufacturers require a yearly service to keep the warranty valid, and annual servicing is the most effective way to catch developing faults before they cause a breakdown.
Our boiler service prices are competitive and confirmed upfront. Call us on 07703 530336 for current pricing in your area.
Most boiler services take 60–90 minutes. We'll give you an accurate time estimate when you book.
Yes. Many developing faults produce no obvious symptoms until they cause a complete failure. An annual service catches these early. It's also likely required to keep your manufacturer warranty valid.
Yes. We can combine a boiler service with a Gas Safety inspection (CP12 certificate) in a single visit – popular with landlords who want to handle both requirements efficiently.
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Call us now for a free quote or to book a same-day visit.
Thinking about upgrading to a more efficient model? See our boilers ratings guide to compare the top brands before you commit. Or read our complete guide to a rated boilers to understand efficiency ratings and what the savings look like in practice. In the BN6 area? Boiler breakdown repairs in Coombes are covered by our local West Sussex team. Littlehampton homeowners can book annual boiler servicing Coombes & Littlehampton — Gas Safe engineers, same-day certificates. Coastal homeowners can book boiler servicing Rustington — annual service across the full BN16 postcode, 7 days a week. Surrey landlords can book a landlord gas safety check in Hurst Green & Oxted — CP12 certificate issued same-day. Lingfield landlords can arrange a landlord safety inspection in Lingfield — Gas Safe certified, CP12 issued same visit.