Project overview
Mikrofill was selected to provide a modern pressurisation solution as part of a heating system upgrade at the historic Hartlebury Castle in Worcestershire. Dating back to the 13th century and renowned for its medieval architecture, the castle required a heating system refurbishment that would improve performance while respecting the unique requirements of a heritage building used for weddings, events, and public functions.
Background
With origins dating back to the 13th century, Hartlebury Castle is one of Worcestershire’s most distinctive historic buildings. Set on land originally granted to the Bishop of Worcester by King Burghred in the late ninth century, the castle features a private chapel, a magnificent 15th-century Great Hall and a range of historic spaces that continue to host weddings, events and visitors throughout the year.
To support the long-term operation of the building and improve heating system performance, the castle’s existing low-pressure hot water (LPHW) system underwent a significant upgrade during the summer of 2017.
The Challenge
Historic buildings present unique challenges when upgrading mechanical services. Heating systems must deliver reliable performance and occupant comfort while working within the constraints of a centuries-old structure.
At Hartlebury Castle, the existing LPHW system required modernisation to support the ongoing use of the venue for weddings, special events and public visits. Any upgrade needed to improve system reliability while remaining sympathetic to the building’s historic fabric.
Project solution
The heating system refurbishment included the installation of new radiators, upgraded pipework and a complete pressurisation package supplied by Mikrofill.
The works were carried out by established West Midlands mechanical contractor March Building Services, who installed a Mikrofill 300 pressurisation package designed to provide accurate system pressure control and long-term operational reliability.
The package comprised:
- Mikrofill 3 filling device with Category 4 backflow prevention
- 300-litre expansion vessel
- Service drain valve
- Factory commissioning and certification
A key element of the installation was the factory commissioning process, which verified that the nitrogen/air charge within the expansion vessel matched the Mikrofill unit’s cold fill pressure setting. This ensured that the expansion vessel could effectively absorb the increase in water volume generated during system operation, maintaining stable system pressures and protecting the heating network.
The Result
The upgrade delivered a modern, fully commissioned pressurisation solution as part of the wider heating system refurbishment, helping to support the reliable operation of the castle’s heating infrastructure.
By combining new distribution components with a professionally commissioned pressurisation package, the project provided:
- Improved heating system performance
- Stable and controlled system pressures
- Protection against pressure-related issues
- Enhanced long-term reliability
- A heating solution suitable for a historic and actively used heritage venue
The project demonstrates how modern heating technologies can be successfully integrated into historic buildings, helping to preserve their future while supporting their continued use for generations to come.
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Mikrofill supports consultants and contractors with specification-ready booster and pressurisation solutions, as well as rapid-response component replacement when operational continuity is critical. Get in touch with our team to discuss your requirements today.
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