13 Best Heating Engineers in Walton-on-Thames for 2026

🔥 13 businesses · 📍 Walton-on-Thames
✓ Reviewed regularly · ✓ Updated 22 October 2026
Mark Reid
Written by Mark Reid, Trades Editor · Verified 22 October 2026
Walton-on-Thames has a mixed bag of housing, and that shapes the work heating engineers see. There are Victorian and Edwardian terraces around the station and Hersham Road, interwar semis in Ashley Park and Burwood Park, and plenty of 1960s and 70s detached homes with older wet systems that have been patched over the decades. Combi boilers dominate the flats and smaller houses, while larger family homes often run system boilers with unvented cylinders. The Thames sits close by, so some properties near the river deal with damp cellars and cold, draughty ground floors that put extra strain on radiators. Expect a lot of annual servicing, powerflushes on sluggish systems, radiator swaps and full boiler replacements.

The businesses here were drawn from third-party business listings and ranked by public review rating and review count, with a small lift for those showing a working website and phone number. We read each business's homepage to confirm heating engineers work is what they primarily offer, which keeps unrelated trades off the page. Permanently closed listings are removed automatically. Where you see a Trust Verified badge, that business has additionally 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 lists every check. For anyone without the badge, those checks haven't been done by us, so they're yours to do before you book.

Get two or three quotes, and ask each engineer to put theirs in writing with the boiler make and model, the warranty length and what's included, such as a new filter, flue, thermostat or controls. Ask to see their Gas Safe ID card and check the number on the Gas Safe Register yourself, making sure it covers the type of work you need. Ask for proof of public liability insurance. After any installation you should receive a Building Regulations compliance certificate, usually through the Competent Persons Scheme, plus the manufacturer's warranty registration. Be wary of anyone who wants a large cash deposit upfront or can't explain why they've recommended a particular boiler.
How We Select & Rate The Best Heating Engineers in Walton-on-Thames

Businesses are ranked by public review rating and review count taken from third-party business listings, with a small lift for those showing a working website and phone number. We read each homepage to confirm heating engineers work is what the business primarily offers. Permanently closed listings are removed automatically. Businesses marked Trust Verified have additionally passed our full verification covering qualifications, insurance, trading history, customer review history and registered company information, and our How We Verify page lists every check. Other businesses on the page haven't been independently verified by us, and inclusion isn't an endorsement. Always do your own checks before hiring.

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 →

Quick Comparison: Heating Engineers in Walton-on-Thames

Our Top Picks

1
Carmine Heating Ltd
Not Verified
★★★★★ 5.0 (275 reviews)
Walton-on-Thames 07736 049721

In Walton-on-Thames and the surrounding Surrey towns, Carmine Heating Ltd works as a heating engineering business covering boiler installation, servicing and repair. Householders can find details of its work on the company website.

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2
Flush Plumbing & Heating Limited
Not Verified
★★★★★ 4.9 (68 reviews)
Walton-on-Thames 07414 898197

Flush Plumbing & Heating Limited is a heating engineering firm based in Walton-on-Thames, covering domestic and commercial work across the surrounding area. The company operates under a clear, trade-focused name that reflects its core specialisms in plumbing and heating systems. Locals seeking a straightforwardly named, locally rooted firm can find further details at flushplumbingandheating.co.uk.

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3
Surrey Boiler Services Ltd
Not Verified
★★★★★ 5.0 (41 reviews)
Walton-on-Thames 01932 647474

Surrey Boiler Services Ltd is a heating engineer based in Walton-on-Thames. The company covers boiler installation, servicing, and repairs for residential properties. Straightforward in its focus, it operates within a defined patch of Surrey rather than stretching across the county, which keeps response times grounded in the local area.

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4
TW Plumb
Not Verified
★★★★★ 5.0 (40 reviews)
Walton-on-Thames 020 8191 2759

Boiler installations, servicing, and central heating work form the core of TW Plumb's offer in Walton-on-Thames. The company handles both residential repairs and new system setups, covering the KT and TW postcode areas. Straightforward in scope, it provides heating engineering without the large-firm overhead that can complicate smaller domestic jobs.

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5
E G Hartnett Heating Ltd
Not Verified
★★★★★ 4.9 (47 reviews)
Walton-on-Thames 020 8894 1828

In Walton-on-Thames and the surrounding Surrey and south-west London area, E G Hartnett Heating Ltd works as a heating engineering firm covering boiler installation, servicing and repair. Residents needing central heating work can find details and contact information on the firm's website.

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6
Elmbridge Heating & Plumbing
Not Verified
★★★★☆ 4.1 (102 reviews)
Walton-on-Thames 01932 228 576

Boiler installations, servicing, and central heating repairs are the core work at Elmbridge Heating & Plumbing, a Walton-on-Thames firm covering domestic properties across the local area. The business handles both gas and plumbing work, making it a practical single point of contact for household heating faults and planned upgrades.

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7
Progas
Not Verified
★★★★★ 4.6 (30 reviews)
Walton-on-Thames 020 8891 5555

Progas is a heating engineering business based in Walton-on-Thames, covering boiler installation, servicing and repair for households in the surrounding Surrey area. Gas work is carried out by engineers who must hold Gas Safe registration, which is a legal requirement in the UK.

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8
Harvest Plumbing
Not Verified
★★★★★ 5.0 (2 reviews)
Walton-on-Thames 07881 850746

Harvest Plumbing operates as a heating engineer serving Walton-on-Thames and the surrounding area. The company covers installation, servicing, and repair work across domestic properties.

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9
D Clark Heating & Plumbing Ltd
Not Verified
☆☆☆☆☆ No reviews yet New
Walton-on-Thames 07812 931 472

D Clark Heating & Plumbing Ltd operates as a heating engineering firm based in Walton-on-Thames. The company covers boiler installation, servicing, and general plumbing work for residential properties in the area, including households across the surrounding Surrey riverside neighbourhoods.

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10
Three3One Limited
Not Verified
☆☆☆☆☆ No reviews yet New
Walton-on-Thames 01932 555331

Three3One Limited operates as a heating engineering firm serving Walton-on-Thames and the surrounding area. The company covers installation, servicing, and repair work across residential properties.

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11
JCM Heating & Plumbing
Not Verified
☆☆☆☆☆ No reviews yet New
Walton-on-Thames 07597 123412

Heating and plumbing work in Walton-on-Thames and the surrounding area is the focus for JCM Heating & Plumbing. The local firm covers both domestic installations and general plumbing.

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12
JT Plumbing and Heating
Not Verified
★★★★★ 5.0 (112 reviews)
Walton-on-Thames 07826 844490

JT Plumbing and Heating is a heating engineer in Walton-on-Thames. The business covers boiler servicing, repairs and installations, along with the plumbing work that commonly goes with them. Further details can be found on the firm's website.

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13
Novo Plumbing Ltd
Not Verified
★★★★★ 5.0 (28 reviews)
Walton-on-Thames 07391 655239

Boiler servicing, leak repairs and bathroom installations are the core of what Novo Plumbing Ltd offers in Walton-on-Thames and the surrounding area. The company works on domestic heating and hot water systems as well as general plumbing faults.

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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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Frequently Asked Questions

How much does a heating engineer cost in Walton-on-Thames?
Prices vary with the job and the property. An annual boiler service typically runs from £70 to £120. Call-out and repair visits often start at £80 to £150 before parts, and a replacement pump or diverter valve might bring the total to £200 to £400. A like-for-like combi boiler swap usually lands between £2,000 and £3,500 fitted, while a system boiler with a new cylinder can reach £3,500 to £5,500. A powerflush generally costs £400 to £700 depending on the number of radiators. Older homes with awkward flue routes or pipework alterations cost more. Getting two or three written quotes is normal, and a decent engineer won't mind.
Does my heating engineer need to be Gas Safe registered?
Yes, by law, for any work on gas boilers, gas pipework or gas appliances. Ask to see their Gas Safe ID card, check the back to confirm they're qualified for the work you need, then verify the registration number on the Gas Safe Register. Unregistered work is illegal and can invalidate your home insurance and boiler warranty. Oil and LPG systems need different qualifications, so ask what the engineer holds if you're off the mains gas network.
Should I repair or replace an older boiler?
As a rough guide, if the boiler is over 12 to 15 years old, the repair costs more than a third of a new unit, or parts are getting hard to find, replacement usually makes sense. A modern condensing boiler can cut gas use noticeably compared with an old non-condensing model. If it's only a few years old or has a single clear fault, such as a failed PCB or pressure issue, repair is often the better call. Ask the engineer to explain both options with prices.
How often should my boiler be serviced?
Once a year. Most manufacturers require an annual service to keep the warranty valid, and it's the best way to catch problems like a blocked condensate pipe, a failing heat exchanger or low pressure before they leave you without heating in January. Book in spring or summer when engineers are quieter and you won't be waiting days for a slot. Landlords must also arrange a gas safety check every 12 months and give the tenant a copy of the certificate.
Why are my radiators cold at the bottom or not heating evenly?
Cold spots at the bottom usually point to sludge build-up, and a cold top means trapped air that needs bleeding. If bleeding doesn't fix it, the system may need balancing or a powerflush, particularly in older houses with steel radiators and original pipework. A magnetic filter fitted after cleaning helps keep debris out. If the whole system is slow to warm, the pump or a stuck valve could be to blame, so have an engineer take a look rather than guessing.
How do I choose between heating engineers and check they're legitimate?
Start with the basics. Check their Gas Safe number on the register, ask for proof of public liability insurance, and look at recent online reviews for patterns rather than single comments. Ask how long they've traded locally and whether they can give references from jobs in nearby areas like Hersham, Weybridge or Molesey. Compare at least two or three written quotes line by line, not just on price. Check what the warranty covers and who handles claims. A Trust Verified badge on this page means we've run those checks ourselves, but for any business without it, you'll need to do them yourself.