“Megaflo upgrade from a vented system. Pressure across the whole house is night and day. Tidy install.”
Mains-pressure hot water, installed and certified.
Unvented cylinder installation, servicing and repair across Hampshire. Every install signed off to G3 building regs and registered with the manufacturer.

What we cover
Cylinder work, top to bottom, G3 certified.
Unvented cylinder installation
Megaflo, Telford, Joule, Heatrae — installed, certified and registered with the manufacturer.
Annual servicing
Expansion vessel re-pressurised, valves tested, temperature settings verified, certificate emailed.
Replacement & upgrades
Like-for-like replacement or upgrade to a higher-spec cylinder. Old unit removed and recycled.
Repairs
Pressure issues, weeping valves, immersion failures, expansion vessel replacement.
Vented-to-unvented conversion
Where mains pressure allows, full conversion to mains-pressure hot water throughout the house.
Building-control sign-off
G3 certification supplied for any new install or major work. Filed with building control where required.

The qualification
G3 is non-negotiable. Every engineer holds one.
Unvented cylinders are pressure vessels. We will not let an unqualified engineer near one. Our G3 certificates are current, the work is signed off to building regs, and we hold the public liability cover to back it.
G3
Current certification
£5M
Public liability
2 yrs
Workmanship guarantee
The installation
Survey, spec, fit, certify.
We tell you the price before we start. No call-out fee, no charge for finding the right washer.
On-site survey
We test mains pressure, flow rate and the existing pipework. We measure the airing cupboard.
Specified quote
Specific cylinder model, capacity, valves and controls — quoted in writing. No vague "starting from" pricing.
Install or service
Tidy installation, all valves correctly oriented, condensate disposed of properly, system commissioned.
Sign-off & paperwork
G3 certificate, manufacturer registration and service log. All emailed the same day.
Recent unvented work
Mains-pressure hot water, done properly.
“Annual service, no fuss, certificate emailed the same afternoon.”
“Replaced a failed expansion vessel — diagnosed in ten minutes, replaced in an hour. Saved a full cylinder replacement.”
Recent cylinder work
Unvented systems we’ve serviced and installed.





