Sutton · SM5
Plumbers & Gas Engineers in Carshalton
From the period cottages around Carshalton Ponds and the Village to the family semis of Carshalton Beeches, our Gas Safe engineers cover SM5 with plumbing, heating and gas work.
Carshalton's mix of older cottages and inter-war homes means varied work - and we bring the same fixed prices and careful workmanship to a listed cottage as to a modern flat.

Sutton · SM5
20-25 minutes from our Streatham base
What we do in Carshalton
Emergency Plumber in Carshalton
Burst pipes, major leaks and gas emergencies in Carshalton, 24 hours a day. We'll talk you through making things safe while an engineer is on the way.
Water leaks £150 · Gas leaks £180
Boiler Repair
No heating or hot water? Emergency boiler repairs and same-day diagnostics across Carshalton, on all major brands - Vaillant, Worcester Bosch, Ideal, Baxi and more. Fault codes, leaks and pressure problems solved.
£120 diagnostic - deducted from your repair
Boiler Servicing
Annual servicing keeps your boiler safe, efficient and inside its manufacturer warranty. Gas tightness test, flue gas analysis, controls and pressure checks, condensate trap cleaned.
Basic £120 · full service £220
General Plumbing
Taps, toilets, leaks, blocked pipes and bathroom plumbing across Carshalton - the everyday jobs, done properly at fixed prices agreed before we start.
Repairs from £80
Boiler Installation
New high-efficiency combi and system boilers, sized properly for your home in Carshalton. Free survey, written quote, and old-boiler removal included.
From £2,500 · powerflush, filter & 12-yr warranty
Gas Safety Certificates (CP12)
Landlord gas safety certificates for rental properties in Carshalton, with certificates emailed the same day. Appliances tested by Gas Safe registered engineers.
£80 · extra appliances £30 each
Local engineers who know Carshalton
Carshalton Village's older cottages come with narrow pipework, quirky flue runs and heating systems that have been adapted many times - work we genuinely enjoy. Out in the Beeches and Wrythe, it's classic 1930s semi territory where boiler servicing and radiator upgrades keep family homes warm efficiently.
InstaGasWorks is based at 37 Mitcham Lane, Streatham - 20-25 minutes from Carshalton. We keep our patch tight on purpose: it's how we manage same-day call-outs and turn up when we say we will.
Why Carshalton chooses us
- Gas Safe registered engineers - verify us on the register
- Rated 5.0 by our customers on Google
- Fixed prices agreed before any work starts
- 24/7 emergency call-outs across SM5
- Diagnostic fees deducted when you accept our repair quote
- Local, family-run - not a national call centre
Carshalton questions, answered
Do you cover Carshalton Beeches and the Village?
Yes - all of SM5: Carshalton Village and the Ponds, Carshalton Beeches, the Wrythe and Carshalton on the Hill. We're 20-25 minutes away from our Streatham base.
Can you work on older cottages in Carshalton Village?
Yes - we're used to period properties with non-standard pipework and tight spaces. We'll always discuss routing and any making-good before starting, so there are no surprises in an older home.
How much is an emergency call-out in Carshalton?
Emergency water leak call-outs are £150 and gas leak call-outs £180, available 24/7. For anything less urgent, standard repairs start from £80-£90 with prices agreed before work begins.
How much is a boiler service in Carshalton?
A basic boiler service in Carshalton is £120 - gas tightness test, flue gas analysis, controls and system pressure checks, condensate trap cleaned and the expansion vessel recharged. A full service, which adds a strip-down and internal clean, new seals and genuine manufacturer parts, is £220. Annual servicing keeps your manufacturer warranty valid.
How much does a new boiler cost in Carshalton?
A straightforward combi-for-combi swap starts from £2,500, and that price includes a powerflush, a magnetic filter, a limescale reducer, one free heating control and up to 12 years warranty. Converting an older conventional system costs more depending on pipework and flue routes, so we survey Carshalton homes free of charge and give a written quote before anything is booked.
More questions? Read our full FAQ or call us - we're happy to give advice over the phone.
We also cover nearby
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