The Inverter technology is the latest evolution of technology concerning the electro motors of the compressors. An Inverter is used to control the speed of the compressor motor, to continuously regulate the temperature. The DC Inverter units have a variable-frequency drive that comprises an adjustable electrical inverter to control the speed of the electromotor, which means the compressor and the cooling output. The drive converts the incoming AC current to DC and then through a modulation in an electrical inverter produces current of desired frequency. A microcontroller can sample the air temperature and accordingly adjust the speed of the compressor. The inverter air conditioning units have increased efficiency in contraction to traditional air conditioners, extended life of their parts and the sharp fluctuations in the load are eliminated. This makes the inverter AC units quieter, with lower operating cost and with less break downs. The inverter AC units might be more expensive than the constant speed air conditioners, but this is balanced by lower energy bills.

With inverter technology to extend the life of the unit’s components, it is important to install a voltage regulator to protect the boards from fluctuation in electricity. Also, in countries where small creatures such as geckos, frogs, & snakes are common, more protection might be necessary by applying a silicone modified conformal coating on the boards of the units.