• Up-to-Date R-410A Refrigerant: Earth-friendly, non-ozone-depleting refrigerant.
• Built to Last: Galvanized steel with a polyester urethane finish. The 950-hour salt spray finish is 1.5 mil thick and resists corrosion 50% better than standard finishes.
• Quiet: Swept-wing fan blade reduces unwanted noise.
• Option for Added Efficiency: This unit gets up to a 1 SEER boost when paired with a variable-speed air handler or one of our iSEER furnaces.
• Innovative Micro-Channel Coil: All-aluminum Micro-Channel coil resists corrosion (in select tonnages).
• Check, Check and Recheck: Factory checked 144 times before being shipped.

The NuTone FS4BE series of air conditioners offers reliable, energy-efficient home cooling. When combined with NuTone engineered coils or air handlers, this central air conditioning unit delivers high-efficiency 14 SEER cooling, or 15 SEER if a NuTone variable-speed air handler or iSEER gas furnace is used.