Water Systems in Southampton
G3-qualified engineers installing unvented cylinders, hot water upgrades and mains pressure solutions across Southampton and Hampshire.
Trusted & Accredited By
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- Accredited Installer
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Hot & cold water systems
Stronger showers and reliable hot water
- G3 qualified engineers
- Megaflo, Telford, Gledhill, Heatrae Sadia
- Building Control notified
- Free survey & fixed quote
Your hot and cold water system is the backbone of your home's plumbing. Whether you're upgrading from an old gravity-fed system, installing an unvented cylinder or replacing a cold water tank, our engineers deliver high-performance water systems across Southampton, Eastleigh, Fareham and Hampshire.
Unvented or vented?
Unvented cylinder
Mains-pressure hot water at every outlet
- Stronger showers, faster-filling baths
- No loft tank — frees up space
- Requires annual servicing by a G3 engineer
Vented cylinder
Practical for homes with existing loft tanks
- Gravity-fed from a loft tank
- Suits older properties
- Can be upgraded to a larger, foam-lagged model
Our water system services
Unvented cylinders
Supplied and fitted with all safety devices, compliant with Building Regulations Part G3.
Thermal stores
Mains-pressure hot water compatible with boilers, solar thermal and heat pumps.
Cold water tanks
Old steel and asbestos-cement tanks replaced with modern insulated cisterns.
Pressure upgrades
Accumulators and pumps to boost low mains pressure; lead supply pipes replaced.
Immersions & controls
Immersion heaters, thermostats and motorised valves replaced.
Annual servicing
Relief valves, expansion vessel and discharge pipework checked every year.
Why G3 qualification matters
Unvented systems are pressurised, so Building Regulations require a G3-qualified engineer. Every installation includes temperature and pressure relief valves, expansion vessels and tundish discharge pipework — and we notify Building Control on your behalf.
Why choose us for water systems in Southampton?
From a simple cylinder swap to a complete system redesign, we provide free surveys, transparent pricing and guaranteed workmanship. Combined with our central heating, boiler installation and general plumbing expertise, we offer a complete solution for your home.
Frequently Asked Questions
Upgrade Your Hot Water
Get a free survey and fixed-price quote for a new cylinder, tank or pressure upgrade.
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