Variable speed cooling provides maximum comfort for your home. It is a technology that has been available for sometime, but in the last 5 years has been truly embraced by HVAC manufacturers. In time, all air conditioners will become variable speed, allowing them to match cooling loads precisely. Like a modulating furnace, or the inverter technology used in ductless systems, a variable speed compressor communicates with the fan in your furnace as it changes speeds. Variable speed refers to the speed at which the compressor outside, and fan portion of your furnace are operating – thereby controlling the flow and frequency of air that is generated - supplying cool or temperate air throughout your entire home.