Unvented Hot Water Cylinder Installation & Servicing
An unvented hot water cylinder provides strong, mains-fed hot water without a loft tank, delivering consistent pressure throughout your home. At BlueFlame Boilers, our engineers install and service systems for safe, efficient performance.
Reliable High-Pressure Hot Water Solutions
An unvented hot water cylinder is one of the most effective ways to deliver high-pressure, mains-fed hot water throughout your home. Unlike traditional vented systems that rely on a cold water storage tank in the loft, unvented cylinders connect directly to the mains water supply, providing consistent water pressure to every outlet in your home, regardless of how many taps or showers are in use simultaneously. At BlueFlame Boilers, our qualified engineers carry out unvented cylinder installations and ongoing servicing to ensure your system performs safely and efficiently.
Unvented cylinders are a popular choice for homeowners who want to improve the performance of their hot water system and free up loft space previously occupied by a cold water tank. These systems can upgrade a system that struggles to deliver adequate pressure to upstairs bathrooms, and they also do away with a noisy pump that causes daily irritation. Unvented cylinders are suitable for a wide range of property types and can be integrated with a variety of heat sources, including gas boilers.
Superior pressure, efficiency, and reliability
The Benefits of an Unvented Hot Water System
Consistent & Strong Pressure
The most immediate benefit of an unvented cylinder is the improvement in hot water pressure. Because the system draws directly from the mains rather than relying on gravity from a loft tank, the pressure throughout your home is consistent and strong.
Excellent Shower Experience
This makes a significant difference to shower performance in particular, delivering a genuinely satisfying shower experience without the need for a separate pump.
Thermal Efficiency & Lower Costs
Unvented cylinders offer excellent thermal efficiency. Modern cylinders are heavily insulated, meaning hot water is retained at a temperature for extended periods without the boiler needing to work continuously.
This contributes to lower running costs and a more responsive hot water supply throughout the day.
Reduced Contamination & Zero Maintenance
The removal of the cold water storage tank also reduces the risk of contamination and eliminates the maintenance requirements associated with loft-based tanks.
Reduced Contamination Risk
No loft-based storage tanks means cleaner, safer hot water for your family.
No Maintenance Required
Eliminates the need for loft tank servicing and regular cleaning.
Installation and Servicing by Qualified Engineers
Unvented cylinders must be installed and serviced by engineers who hold the relevant G3 unvented hot water qualification. This is a legal requirement, not simply best practice, and it reflects the fact that these systems operate under mains pressure and must be fitted with correctly calibrated safety devices, including pressure relief valves and temperature controls. At BlueFlame Boilers, our engineers hold the necessary qualifications to carry out all unvented cylinder work safely and in full compliance with current regulations.
Our installation service covers the full process from assessing your existing hot water setup and recommending the right cylinder size and specification, through to fitting, commissioning and testing the completed system. We ensure all safety devices are correctly set and tested before handover and provide you with clear guidance on how to operate and maintain your new system.
Annual servicing of your unvented cylinder is a requirement under the manufacturer’s warranty and is also essential for safety. Our engineers carry out thorough annual checks of the pressure relief valve, expansion vessel, thermostat and all associated safety components, providing you with a service record and the assurance that your system is operating correctly.
Find Out More About Unvented Cylinders
If you are considering upgrading your hot water system or your existing unvented cylinder is due for a service, BlueFlame Boilers is ready to help. Contact us today for straightforward advice, a no-obligation quote, or to book your annual cylinder service with our qualified engineers.
