Royal Mail


A new heating, cooling and ventilation system for the company’s new South Midlands sorting hall.

ATS Scope & Objectives:

To design and install a heating, cooling and ventilation system into the new sorting hall at Swan Valley, to meet the specific business requirements of a mail sorting warehouse and its staff, for a temperature-controlled environment.

In addition, the system needed to meet Royal Mail’s sustainability requirements.


This project threw up a number of challenges that needed to be overcome, including:

  • Maintaining a comfortable controlled temperature for staff working in the sorting hall
  • Infiltration of outside temperatures, through large loading doors
  • Designing a solution that would provide low ongoing energy costs
  • Meeting the sustainability requirements of Royal Mail


ATS designed and installed an air induction system using our propriety JETFLO nozzle technology with four air handling units, two of which are connected to a solar wall.

The AHUs provide in excess of 1000kW of mechanical cooling and 600kW of heating with AHU 1 being supplied by a building biomass system, AHUs 2 & 3 being indirect gas-fired units connected to the solar wall and AHU 4 being an indirect gas-fired unit for discharging the exhaust gases.

The system is controlled via the Trend DDC Controller to maximize the renewable energy source during daylight hours.


The sorting hall’s heating, cooling and ventilation system at Swann Valley is saving Royal Mail 233,396 kW a year to deliver energy and cost savings.

The system also reduces CO² output by 59 tonnes a year, which helps meet the company’s sustainability and environmental requirements.

As the system is based on central plant arrangements and a self-balancing system, there is now no need for any high-level maintenance. Running costs are reduced by positioning the AHU’s close to the gas and electrical supplies, along with the added benefit of the solar wall.

The JETFLO system can also be operated on full fresh air in summer to provide free cooling and ventilation and further savings on running costs.

Next Steps:

If you’d like to talk to one of our experts regarding our JETFLO system, please contact Kevin Gillen or Ryan Walsh on 01527 833383 or email or

Head Office:

ATS Group, Aston Court, George Road, Bromsgrove Enterprise Park,
Bromsgrove B60 3AL.

Tel. 01527 8333838