Single stage furnaces are a reliable way to heat your home. They provide basic heating with an always on 100% gas and a fixed speed blower fan. While they provide sufficient heating they do not provide the best comfort.
Two Stage gas furnaces provided added efficiency and comfort. Two stages of heat can adjust to the load of your home. The high efficient motor uses less electricity and provides more even temperatures throughout your home. It also increases the efficiency of your central air conditioner.
Two Stage Variable Speed furnaces provide quiet performance and even-temperature comfort from variable-speed air delivery. Two-stage operation allows longer, more even heating cycles on low stage. It adjusts system operation to changing conditions. It also ensures optimal summertime cooling dehumidification when system components include multi- and variable-speed cooling products.