We perform free energy audits for your cooler giving you a clear picture of your electrical saving possibilities, your rebate with the local utility, the cost, payback period and carbon footprint reduction. We install economizers of varying cfm depending on your cooler/warehouse size, a micro-processor to control the solenoid and evaporator fan runtime, high efficiency EC motors, fans to destratify air when the evaporators are turned off and door heater controls. For a more in depth picture google www.freeaire.com