The SmartComfortâ„¢ VS 90 variable-speed, two-stage gas furnace can be installed in an upflow, downflow, horizontal left, or horizontal right configuration. The furnace offers 92-percent AFUE ...
The PS80 gas furnaces have an AFUE rating of 80 percent. This line of furnaces features models that can be installed in upflow, downflow, horizontal left, or horizontal right configurations, with no ...
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