Servicing Maintenance

Service and Maintenance

Our Service & Maintenance Department, primarily based in London and Essex, is at your disposal for all work from Diagnostics, a ‘one off’ service to a full, preventative maintenance plan. As a heating ventilation and air-conditioning company we will ensure your system is installed and maintained to a high standard and as a PES Group Service & Maintenace Contract client, you will benefit from the following:

  • Fully qualifed, manufacturer trained Engineers and Technicians
  • 24/7 Emergency Response and Attendance
  • Beneficial Rates for Emergency call-outs and all extra work
  • Equipment and Plant always operating at its optimum level
  • Space Air Daikin Approved Installers
  • Carrier Air Conditioning VVT Trained Engineers
  • BPEC Certified Installers for Unvented Hot Water Storage Systems
  • Citation Approved Health & Safety Procedures.

Our prime objective has, and always will be, complete client satisfaction, which we feel is substantiated by (a) our retained contract clients, some of which we have had on contract since the formation of PES Group Ltd some 35 years ago and (b) our clients testimonial letters. Allow us to assist you with your requirements, we feel that you will never regret it.

Air Conditioning

Air filters

Clean air filters are the heart of any efficient heating or cooling system.

Engineer Servicing

Routine Servicing

During routine servicing, our engineers always test the controls and the equipment power consumption.

Heating Diagnostics


Diagnostics of systems often requires the need for the engineers laptop with specialist software.