iQ Drive® air conditioners and heat pumps utilize inverter-driven rotary technology, and they are currently the only ducted applications of this 
technology in North America.
Inverter technology is mainly found in ductless mini-splits as it was developed for the Asian markets as a way to achieve high efficiency with very little noise. The iQ Drive system’s inverter component converts the electrical current from AC to DC and, in doing so, can almost infinitely vary the compressor and fan motor speeds.
Inverter-driven rotary technology is different in that it is almost always running. The unit can modulate anywhere from 40 to 118 percent of capacity, instantly adjusting to exactly offset the cooling demands on the house. Because the iQ Drive unit doesn’t cycle on and off like a traditional system, it saves a lot of energy and considerably reduces sound levels. In fact, sound ratings are from 59 to 72 decibels, the lowest in the industry.
The key differences between the iQ Drive and traditional models are:
- Inverter
- Rotary compressor
- Electronic expansion valve instead of a TXV
- Patented controller that uses an algorithm to communicate with the inverter and adjust capacity
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