Cylinders

Boost Your
Hot Water

At J&R FLEX, we specialise in the installation, replacement, and maintenance of both vented and unvented hot water cylinders. Whether you’re upgrading to a high-pressure unvented system for stronger flow throughout your home, or maintaining an existing vented setup, our experienced team ensures safe, efficient installation to meet your household’s hot water demands. We tailor every system to suit your plumbing layout and water usage, delivering reliable hot water when and where you need it.

Our Services

  • Unvented hot water cylinder installation
  • Vented cylinder installation and upgrades
  • System conversions from vented to unvented
  • Cylinder maintenance and servicing
  • Pressure and safety valve checks
  • Hot water flow rate optimisation
  • Expansion vessel installation
  • Thermostat and immersion heater replacements

  • Pipework alterations and system integration

  • Expert advice on choosing the right cylinder for your home

FAQs

Vented cylinders rely on a cold water tank in the loft and operate at low pressure, while unvented cylinders are directly connected to the mains water supply, providing higher pressure and stronger hot water flow.

Yes, we offer professional conversions from vented to unvented systems, which can improve your hot water pressure and efficiency. We’ll assess your home’s plumbing before recommending the best solution.

Absolutely. Unvented cylinders include multiple safety features such as pressure relief valves and expansion vessels to ensure safe operation
when installed and maintained correctly.

We recommend servicing your water cylinder annually to check for safety, performance, and to extend its lifespan. Regular maintenance helps prevent issues like leaks or pressure loss.

Yes, we work with a variety of cylinder sizes and designs, including compact models suitable for tight spaces, ensuring you get the best solution without compromising your available room.

Yes, unvented cylinders operate at mains pressure, which typically provides better flow rates and stronger hot water delivery compared to vented systems.

Previous Projects

  • Full Bathroom Refurbishment – Milton Keynes

Expert Installation & Replacements

For Hot Water
When You Need It

Whether you need a new installation, a system upgrade, or routine maintenance, J&R FLEX has you covered for all vented and unvented hot water cylinder needs. We’ll ensure your system runs safely, efficiently, and delivers consistent hot water throughout your home.

Contact Us Today