✓ Verified Google reviews·✓ Reviewed regularly·✓ Updated 25 August 2026
Written by Mark Reid,
Trades Editor ·Verified 25 August 2026
Crawley's mix of housing, from the older terraces around Three Bridges and Ifield to the newer estates near Southgate and Maidenbowe, means heating engineers here deal with a fair spread of systems. You'll find plenty of combi boilers in the newer builds, older gravity-fed systems still hanging on in some of the 1950s and 60s properties, and everything in between. Being close to Gatwick brings its own quirks too, plenty of rental properties and holiday lets need regular servicing to keep landlords compliant, and the town's proximity to the M23 means engineers often cover a wide catchment stretching out to Horley, Pease Pottage and East Grinstead. Cold snaps in winter tend to bring a rush of callouts for frozen pipes and failed boilers, so knowing a reliable local engineer before you need one genuinely pays off.
The businesses featured here are drawn from public business listings, ranked mainly by review rating and how many reviews they've built up, with a small boost given to those showing a working website and phone number, since that's a basic sign a business is easy to reach. We also read through each business's homepage to check that heating engineering is actually their main line of work, which stops general builders or unrelated tradespeople slipping onto this list. Any listing flagged as permanently closed gets removed automatically, so what you see here should reflect businesses still trading. Where you spot a Trust Verified badge, that business has gone further and passed our full verification, covering trade qualifications and accreditations, public liability insurance, trading history, customer review history, and registered company information. Our How We Verify page sets out exactly what that involves. For businesses without the badge, those checks haven't been done by us, so it's worth doing your own homework before booking.
Before agreeing to any work, ask to see a Gas Safe registration card if the job involves gas appliances, it's a legal requirement and the card will show what specific work they're qualified for. Get a written quote that breaks down parts and labour, and ask whether it includes a warranty on the work. For boiler installations, check whether the manufacturer's warranty needs annual servicing by a registered engineer to stay valid, that catches people out more often than you'd think. It's sensible to get two or three quotes for anything beyond a small repair, prices for a full boiler swap in Crawley can range from around £1,800 to over £3,500 depending on the make and any pipework changes needed, so a bit of comparison shopping makes a real difference to your wallet.
How We Select & Rate The Best Heating Engineers in Crawley
Ranking is based on review rating and review count pulled from public business listings, with a small lift given to businesses showing a working website and phone number. We check each business's homepage to confirm heating engineering work is what they primarily offer, which keeps unrelated trades off this page. Listings flagged as permanently closed are removed automatically. Businesses marked Trust Verified have additionally passed our full verification, covering trade qualifications and accreditations, public liability insurance, trading history, customer review history, and registered company information, see our How We Verify page for the full list. Other businesses shown here haven't been independently verified by us, and appearing on this page isn't an endorsement. Always do your own checks before hiring anyone.
Recommended and Featured listings are paid placements, so a business's fee affects whether and where it appears. Every other listing is ranked on rating and review count from third-party business listings. How we rank & verify →
Crawley households needing boiler repairs or heating installations can call on Waterboy Heating and Cooling Ltd, a firm based locally at RH10. The company has built a strong reputation, reflected in a 5-star rating across 122 Google reviews. Its work covers general heating and cooling systems across the town and surrounding areas.
Gas Trading Ltd works mainly on older properties around Crawley, where ageing boilers and dated pipework need careful diagnosis rather than straightforward swaps. The firm handles servicing, repairs and installations, with a rating of 5 from 39 reviews reflecting consistency across that kind of work. Jobs are carried out with attention to how existing systems were originally fitted.
Gas engineering services covering Crawley and the surrounding area, Master Heating Services Ltd handles boiler installation, servicing, and repairs for domestic customers. The company holds a perfect five-star rating across 13 Google reviews, suggesting consistent work quality. RH6 7LP places it well for clients across the Gatwick corridor.
A 4.7 rating from 19 reviews reflects the work JK Floorheating Ltd carries out for clients across Crawley and the South East. The firm specialises in underfloor heating systems, covering design and installation for both new builds and retrofit projects. Its focus remains narrow rather than spread across general plumbing or boiler work.
Rated 5.0 on Google, Edwards Heating Solutions Ltd is a gas engineering firm based in Crawley, serving residential customers across the local area. The company covers boiler installation, servicing, and general gas work, building a consistent review record from its early client base. A straightforward option for households in the RH11 9QL area seeking qualified gas engineers.
Gas engineering and plumbing services covering Crawley and the surrounding area, EcoTec Ltd handles domestic and commercial work from boiler installation to emergency callouts. The RH10 postcode base positions the company well for the eastern parts of the town. Their website indicates a particular focus on emergency plumbing response alongside standard gas work.
Transparency notice: Recommended and Featured listings are paid placements, so a business's fee affects whether and where it appears. All other listings are ranked by a combined score drawn from ratings and review counts published on third-party business listings, plus basic completeness signals such as a working website and phone. A Trust Verified badge means we have independently checked that business's documents; businesses without it have not been independently verified by us. How we verify →
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A straightforward boiler service typically runs £70 to £100, while diagnosing and fixing a fault might cost £120 to £250 depending on parts needed. A full boiler replacement in Crawley generally sits between £1,800 and £3,500, more if you're changing fuel type or need extra pipework moved. Callout charges vary too, some engineers charge £50 to £80 just to turn up, which is often deducted from the final bill if you go ahead with the work. Get two or three quotes before committing, prices can vary more than you'd expect for the same job.
Do I need a Gas Safe registered engineer for boiler work in Crawley?
Yes, if the work involves a gas boiler or gas appliance, the engineer must be Gas Safe registered by law. Always ask to see their Gas Safe card and check the back for what categories of work they're actually qualified to do, not every registered engineer covers every type of appliance. You can also check an engineer's registration number directly on the Gas Safe Register website if you want extra peace of mind.
How often should my boiler be serviced?
Most manufacturers recommend an annual service, and it's often a condition of keeping your warranty valid. Servicing usually takes an hour or so and checks things like the flue, pressure, and heat exchanger for wear or corrosion. Booking it in late summer or early autumn tends to be easier than waiting until the first cold snap, when engineers get booked solid across Crawley and the surrounding areas.
What's the difference between a combi boiler and a system boiler, and does it matter for repairs?
A combi boiler heats water on demand and doesn't need a separate tank, which suits smaller properties without loft space. A system boiler works with a hot water cylinder, better suited to houses with higher demand, like those with more than one bathroom. It matters for repairs because parts and labour costs can differ, and not every engineer stocks parts for every make, so mention your boiler's brand and model when getting quotes.
How quickly can a heating engineer come out for an emergency, like no heating in winter?
Many local engineers offer same-day callouts for genuine emergencies, particularly if you've got no heating or hot water at all, though this depends on how busy they are, and winter cold snaps push demand up sharply. Expect to pay a premium for evening or weekend emergency callouts, often £80 to £150 on top of the standard rate. It's worth asking upfront what their emergency response times typically look like before you need one urgently.
How do I choose between heating engineers in Crawley when several look similar on paper?
Start by checking their Gas Safe registration number yourself on the official register, don't just take a card at face value. Read through recent reviews rather than just the star rating, looking for comments about punctuality, tidiness, and whether they explained costs clearly before starting work. Ask for proof of public liability insurance and check how long they've been trading locally. If a business carries our Trust Verified badge, that means it's passed our full checks on qualifications, insurance, trading history, and company records, but for anyone without it, doing that legwork yourself before booking is a sensible precaution.
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