West Sussex · RH10, RH11
Cylinder & Pump (G3) in Crawley
Cylinder, pump and unvented hot water system work covers installing or replacing a hot water storage cylinder, fitting a pump to boost pressure to showers or taps, and — where the system is unvented, meaning it's fed directly from the mains rather than a header tank — carrying out the installation and any subsequent work under G3 unvented hot water qualification, which is a legal requirement under the Building Regulations.
In Crawley, that covers Ifield, Three Bridges, Southgate, Furnace Green, Broadfield, Pound Hill, Maidenbower, Northgate, West Green, Langley Green, Tilgate, Gossops Green, Bewbush. Crawley combines postwar new-town neighbourhoods with older pockets around Ifield, Three Bridges and Southgate, and sits close to Gatwick Airport with strong transport links into London and along the M23. Housing stock ranges from 1950s–70s estate homes to Victorian terraces and more recent developments, which means project requirements vary considerably from one street to the next.
Coverage
Areas we cover in Crawley for cylinder & pump (g3)
Property styles in Crawley
Crawley's housing mix includes postwar semis and terraces across the New Town neighbourhoods, Victorian and Edwardian houses around the older Ifield and Southgate areas, and newer estate housing on the town's edges. Many properties are well suited to rear or side-return extensions where garden depth allows, and loft conversions are common in the older stock.
Planning considerations
Crawley Borough Council is the local planning authority. Ifield village and parts of the old town centre fall within conservation areas, which affects permitted development rights and materials on visible elevations. Properties near Gatwick Airport may also be subject to safeguarding or noise-related planning considerations, which we check at feasibility stage.
How it works
Our cylinder & pump (g3) process
- 01
Assessment
Reviewing the existing hot water system, incoming mains pressure and flow rate, and what the household needs from it.
- 02
Specification
Agreeing cylinder size and type, and whether a pump is needed to meet pressure requirements.
- 03
Installation
Fitting the new cylinder or pump, including the safety fittings a G3 installation requires — expansion vessel, pressure and temperature relief valves, and tundish.
- 04
Commissioning and certification
Testing the system and issuing the relevant Building Regulations notification and commissioning certificate for unvented installations.
Also in this area
Other services we provide in Crawley
Nearby coverage
Cylinder & Pump (G3) in nearby areas
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FAQs
Cylinder & Pump (G3) in Crawley: FAQs
Do you provide cylinder & pump (g3) across all of Crawley?
Yes, we cover the RH10 and RH11 postcode areas in full, including Ifield, Three Bridges, Southgate, Furnace Green, Broadfield, Pound Hill, Maidenbower, Northgate, West Green, Langley Green, Tilgate, Gossops Green, Bewbush.
What does G3 qualified mean and why does it matter?
G3 is the recognised qualification for working on unvented hot water systems, required under Building Regulations Part G because these systems store pressurised hot water and can fail dangerously if the safety devices aren't correctly installed or maintained. Always check an engineer's G3 qualification before unvented cylinder work is carried out.
Does an unvented cylinder need annual servicing?
Yes, and it's usually a condition of the manufacturer's warranty as well as good practice — the safety valves need checking annually by a G3-qualified engineer to confirm they're operating correctly.
Do you cover both RH10 and RH11 in Crawley?
Yes, we work across both postcode areas, including the town centre, Ifield, Three Bridges, Southgate, Furnace Green and the surrounding neighbourhoods.
Get a quote for cylinder & pump (g3) in Crawley
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Last reviewed 2026-07-28.