We are constantly striving to reduce our carbon footprint and fuel useage across our premises recently introducing a brand new air handling unit at our HQ in Worcester, which was completed in Summer 2020.

An AHU is a device used to regulate and circulate air as part of an HVAC [Heating, Ventilating, and Air-Conditioning system]. The 4 AHUs on the roof are connected up to a ductwork ventilation system that distributes the conditioned air throughout the factory and then returns it to the AHU. We recover any heat energy from the returned air via a heat recovery wheel which then sends it back to the supply air as required. The previous air handling plant was installed 30 years ago and was inefficient and was causing increasing maintenance problems.

The estimated annual electrical cost saving associated with the replacement AHU scheme is £51,000.00. The annual electrical energy saved is estimated at 379,000 kWh.

The estimated annual gas cost saving associated with the replacement AHU scheme is £10,000.00. The annual gas energy saved is estimated at 522,000 kWh.

Projected overall annual energy cost saving is therefore £61,000.00.

• Electricity Carbon Saving: 193 Tonnes per annum
• Gas Carbon Saving: 113 Tonnes per annum
• Total Carbon Saving: 306 Tonnes per annum

Emissions per capita for the UK currently stand at around 5.4 Tonnes per person per annum, so another way to look at the 306 Tonne saving is that this is equivalent to the carbon typically emitted by 56 Bosch employees in one year.