HVAC Energy Upgrades

HVAC Energy Upgrades


With energy costs continuing to increase, building operating costs also increase. Yet, simple improvements to the efficiency of installed BMS and HVAC systems can offer significant energy and CO2 savings. As well as providing a HVAC spare parts and replacement components ordering service, Airedale also offers a range of upgrades and retrofit solutions for BMS or HVAC systems which help to:

  • Improve energy efficiency

  • Increase energy output

  • Increase system reliability

  • Eliminate system downtime

  • Extend system/equipment life-cycle

  • Avoid costly repairs

Upgrades, replacement components and retrofit solutions currently available include:

Software updates

A properly functioning BMS should deliver energy efficiency savings of between 15-20%. Upgrade to the latest software platforms to improve system optimisation and ensure that your building management system continues to run smoothly.

HVAC controllers and BMS replacements

Improving the efficiency of your BMS is one of the most cost-effective measures you can implement. The latest hardware and unit strategy can be installed on existing equipment to ensure system reliability, enhanced performance and increased control.

Read more about HVAC controls

Sub metering

Sub-metering and collecting energy data enables system inefficiencies to be highlighted, investigated and eliminated. Understanding energy usage by system components means, performance targets can be set and monitored regularly. Sub-metering can help to save up to 5% of the energy consumed by each metered components.

EC fans

Replacing AC fans with EC fans enables optimisation of cooling systems for ultimate energy efficiency, potentially reducing energy usage by up to 70%. EC fans offer enhanced control and are the most effective solution for reducing cooling system energy consumption, essentially providing the same output for less input. They are fully compatible with most systems and units, meaning that straight forward, cost-effective upgrades can be carried out with minimal disruption.

Find out more about EC fans

Electronic expansion valves (EEVs)

The use of EEVs in cooling units and condensers reduces the need for high head pressure, which can result in an energy efficiency ratio (EER) increase of 30%. EEVs provide stable, fast and precise control of superheat and can be used in all types of unit.

They can be installed inside the unit or as a remote control panel (REEV). Using an electronic expansion valve (EEV) allows for good refrigeration control whilst operating at part load and lower ambient conditions with a reduced condensing pressure.


Installing inverters to motors allows precise control of motor speeds, which can be ramped up or down to match load requirements. This ensures that the only energy used is that which is needed.

Variable speed drives

Variable speed drives allow control of fan and pump speeds which can help to reduce energy consumption and costs by enabling the output speed of the motors to precisely match load requirements.


With some refrigerants being phased out due to their environmental impact, a refrigerant upgrade will ensure that you are fully compliant with any new legislation implemented. Refrigerant upgrades help to increase system efficiency, which will also save you money. Just a 10% loss in refrigerant charge can equal a 20% increase in operational costs.


Maintaining or better still, upgrading compressors can save vast amounts of energy. Compressors can be precisely specified for individual applications and offer variable speed, which can be matched to load requirements, meaning the only energy used is that which is needed. Faulty or leaking compressors result in energy being wasted. Even tiny leaks of only 3mm can cost more than £700 a year in wasted energy.

Learn more about compressors used in Airedale products


Upgrading and selecting the correct pump for an application and avoiding oversizing can lead to considerable energy savings. Again, pumps can be matched to demand, therefore using only energy required.