Mechanical, Electrical & HVAC Specialists.

Project Description
The project involved the complete replacement of the building's ageing mechanical heating and cooling infrastructure at Chancery Place, a 14-storey office building in the heart of Manchester, owned by NFU Mutual.
The existing 1.5MW Carrier rooftop chiller, associated heating and cooling pipework, and three 200kW gas boilers were removed and replaced with a new Mitsubishi Electric VRF heat recovery system. The existing air handling and ventilation systems were retained, with new DX coils installed to temper the incoming fresh air for both heating and cooling.
The primary objective was to significantly improve the building's energy efficiency while supporting the client's decarbonisation strategy through the removal of gas-fired heating.

Full Solution
The completed installation comprises of 25 Mitsubishi Electric PURY-P YNW heat recovery VRF outdoor units serving the entire building. Each outdoor unit is connected to a CMB-M BC Controller, supplying a total of 174 PEFY-M ducted indoor units across all 14 floors. The PURY-P YNW heat recovery system delivers simultaneous heating and cooling, intelligently redistributing waste heat between zones to maximise efficiency and reduce operating costs.

System control is provided by a Mitsubishi Electric AE-400 central controller, complemented by five EW-50 centralised controllers, allowing localised control across designated areas of the building.

To upgrade the ventilation system, six Mitsubishi Electric PUZ-ZM condensing units were connected to the existing air handling units via new DX coils, ensuring incoming fresh air is tempered efficiently throughout the year. Every BC Controller was factory-fitted by Kooltech with KS-8 Port Isolation Valves. These allow for specific indoor units to be isolated for future servicing or repairs without shutting down the entire VRF system, significantly reducing maintenance disruption and system downtime.
In addition, all tenant zones are now individually sub-metered, with temperatures maintained between 19°C and 23°C. Energy usage is monitored through the AE-400 controller, enabling tenants to pay only for the energy they consume rather than being charged on a pro-rata floor area basis.

Project Delivery
The project was tendered in September 2024, with works commencing in March 2025 and completing in May 2026.
Given the building remained partially occupied throughout the programme, AD Environmental adopted flexible working practices, including out-of-hours working where necessary. At peak periods, up to 20 engineers were working on site to maintain programme milestones while minimising disruption to tenants.

During construction, additional indoor units and controllers were incorporated into CPW's original design to accommodate revised CAT V office layouts. Calverley Controls, Leeds, was appointed by AD Environmental to deliver the front-end Building Management System integration.

AD Environmental operate locally in Yorkshire, and nationally. Within the past 8 years we have gained experience across a range of sectors, including retail, fitness, commercial, industrial, education, health care and transport environments.

Whether you're seeking assistance with design on a new build project, full building or office refurbishment, installations, upgrading of aged equipment, or just looking to maintain and service your current plant cost-effectively and efficiently - we can help.