You have probably had sales people come into your home and start recommending Inverter Air conditioning. And chances are you don't fully understand how it works.
Well here is a basic explanation of Inverter units.
You see, a basic conventional system has a basic engine it just like your motor car. This engine basically has two speeds. Flat out and Stop.
These systems use a lot of electricity in these types of motors because it takes a lot of energy to start a motor from ZERO. And when your home reaches the temperature that you requested on your climate control thermostat the motor will turn off completely.
With an inverter Air conditioning system, like Toshiba , Daikin, or Mitsubishi Electric, these motors are designed differently.
You see, when you turn on an inverter, the motor will start up slowly so that it does not use a lot of power, then the motor slowly speeds up to full power on a sliding scale. This way the system uses less power to initially start up.
The end result is that the motor does not have to completely stop and because of this you don't use a lot of electricity trying to overcome inertia trying to make the motor initiate from a complete stop.
They are a very good technology to use when compared to conventional systems, however my personal opinion is that Digital Scroll units will deliver enev more energy savings and temperature control.
ONE WARNING. DO NOT UNDER SIZE YOUR INVERTER SYSTEM OR YOU WILL USE AT LEAST 10% MORE ELECTRICITY THAN A CONVENTIONAL AIR CONDITIONING SYSTEM.