Unvented Water Heater Installations Manchester

Unvented Water Heater Installations at a University in the North West

Project Brief

A major university in Manchester required a modern solution for one of its buildings, which had been experiencing ongoing issues with it's hot water supply. The existing system - a traditional vented calorifier paired with a header tank - was no longer capable of meeting the building’s increased demand. As usage of the facility had doubled in recent years, the old system struggled to maintain sufficient temperatures throughout the day. The client needed a cost-effective upgrade that could meet current requirements while minimising disruption to the existing pipework network, much of which was concealed behind walls and in risers. There was also a concern that a single centralised heater would not deliver adequate hot water to distant outlets, so a supplementary solution was required.

Solution

Our full turnkey proposal included:​

• Full System Survey and Planning: Our engineers conducted a comprehensive review of the building’s hot water infrastructure to determine the most effective upgrade path. The system layout, pressure levels, and usage patterns were assessed to inform the final design.

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• Main Heater and Pressurisation Unit Installation: The existing calorifier and header tank were removed from site. A new unvented water heater was installed along with a pressurisation unit to maintain consistent pressure throughout the system. The works were scheduled to take place at designated times to avoid disruption to students and academic operations.

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• Secondary Heater for Remote Zones: To ensure hot water delivery at the furthest points of the system, a second unvented water heater was wall-mounted in the more remote section of the building. This localised supply ensured that all outlets met required temperature thresholds.

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• Pipework Modifications and Compliance: Associated pipework and valves were upgraded to suit the new system. New expansion vessels were also installed. All works were carried out by engineers with unvented system qualifications, and delivered in accordance with ACOP L8 and best practice plumbing standards.

Key Benefits Delivered

• Minimal Disruption: The works were completed without interfering with day-to-day university operations, thanks to careful planning and coordination.

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• Improved Temperature Profiles: Both water heaters now provide reliable and consistent hot water throughout the building, significantly reducing the risk of Legionella.

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• Reduced Energy Costs: By removing an inefficient vented system and replacing it with targeted, modern unvented units, the client now benefits from improved energy efficiency and lower operational costs.

To see how Titan Mechanical Services supports education estates with smart, scalable water system solutions, visit our Water Heater Services page. ​To see more of our recent hot water projects, visit our page:​​

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