The ESM™ is a system of micro-computer digital optimization modules specifically designed to reduce the electricity consumption (kWh) and maximum demand (KW) of refrigeration and air conditioning compressors by 15% to 20% while maintaining temperature performance.

The ESM™ is designed to interface with all types and makes of air conditioning and refrigeration controllers from the simple thermostat single condensing systems to the most sophisticated computer based multiple compressor parallel systems. The ESM utilizes world wide exclusively copyrighted software that has been developed over 20 years to augment existing building and refrigeration control systems.

The major function of the ESM™ is to optimize the performance of air conditioning and refrigeration compressors while operating within the control parameters of the existing primary controller.

In addition to its exceptional energy saving capabilities, the ESM™ has several other attributes:

• The ESM™ reduces compressor run time by 15% - 50% and in so doing extends compressor life. Therefore the ESM™ provides cost reductions to both operating and capital budgets.
• Using the ESM™ restricts "short cycling" and ensures warranty compliance by only allowing for a maximum of 2 saving Off periods per 30 minute operating cycle. The ESM™ is installed in the control circuit in series with and after the thermostat. Because the ESM™ is no more invasive than a thermostat there are no issues with the compressor's warranty.
• Because the ESM™ complements, but does not replace the primary controls, an accurate evaluation of the ESM performance can be measured at any time after installation of the ESM™ by switching the ESM™ off and comparing the kWh consumption with a similar period with the ESM™ operating. This is critical to qualifying for any of the government or utility rebate programs.

Installation is relatively easy and can be carried out by an electrical or mechanical trade's person, normally in less than a day. The ESM's™ are connected in the control circuit in series with the existing compressor controls.