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Blueflow Heating Cooling & Renewables

— Our Services

Unvented Hot Water Systems

Supply, installation and maintenance of unvented high‑pressure hot water cylinders across Essex — commissioned and safety‑checked by Gas Safe and CIPHE qualified engineers.

— About This Service

Unvented Hot Water Systems

Blueflow supply and install unvented hot water cylinders for homes and commercial properties across Essex, with full commissioning and safety checks included. We fit direct and indirect cylinders, connect to boilers or heat pumps, and carry out TMV and PRV setup to ensure safe, high‑pressure hot water. All work is Gas Safe Registered and F‑Gas qualified where required, with 15 years’ trade experience and comprehensive certification.

Unvented Hot Water Systems

— Our Process

How It Works

01

Site survey & design

A qualified engineer visits to assess mains pressure, hot water demand, cylinder location and compatibility with boilers or heat pumps, then proposes a system and layout.

02

Supply & professional installation

We supply the right unvented cylinder and ancillaries (expansion vessel, PRV, TMV, AAV) and install to manufacturers’ instructions and industry regulations.

03

Commissioning & certification

Full commissioning, safety checks and paperwork on completion — thermostat calibration, PRV testing, pressure checks and user handover with compliance certificate.

— REVIEWS

What Our Customers Say

“Recently had a new toilet fitted by Blueflow Plumbing & Heating, all work done to very high standard great customer service start to finish would highly recommend and use again. ”

— Darren Hewitt

GoogleGoogle2026-04-28
“Our underfloor heating wasn't working properly one of the sections wasn't heating up. Ryan took his time to figure out which one wasn't working and then checked the heating system. He needed a couple of parts, ordered them and came back the next week to fit them. He was really lovely and helpful and explained how the system worked and what he was doing. He answered all of my questions. Super helpful would 100% use again! ”

— Jessica Motley

GoogleGoogle2026-04-16
“One of the few companies I have had the pleasure of using. The team were brilliant. We have a fairly complex set up for a domestic heating and hot water system which uses ASHP, back up boiler and immersion with weather compensation. They clearly knew their stuff. ”

— David Nichols

GoogleGoogle2026-04-14
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— FAQ

Frequently Asked Questions

If your property has reliable mains water pressure and you need high‑pressure hot water to multiple bathrooms or appliances, an unvented cylinder is often the best solution. We carry out a pressure and supply assessment during a site survey and advise if modifications to the incoming mains or additional controls are needed.

Ready for reliable high‑pressure hot water?

Book a no‑obligation site survey across Essex. Call 07446 145647 or email ryan@blueflowheating.co.uk to arrange a visit.
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