Lennox XC21 Central Heat Pump – 21 SEER, Variable-Speed, Ultra-Quiet

Lennox XC21 2-Ton Central AC – 21 SEER, Variable Speed, Ultra-Quiet, WiFi Ready

The Lennox XC21 is one of the most efficient and quietest central air conditioners in the US market, rated at 21 SEER with Lennox’s proprietary variable-speed compressor technology. Operating as quietly as 59dB — comparable to normal conversation — it’s an ideal replacement for homeowners with older 10-13 SEER systems who want maximum efficiency, noise reduction, and smart home integration.

• 21 SEER Ultra-High Efficiency: Among the most efficient residential central AC units available; reduces cooling costs by 40-50% versus 10-13 SEER systems being replaced across the US
• Variable Speed Compressor: Lennox’s two-stage variable speed compressor runs at low speed 80% of the time for consistent temperature, lower humidity, and dramatic energy savings
• Near-Silent 59dB Operation: At 59dB, the XC21 is one of the quietest central AC condensers available — neighborhood-friendly operation even in close-quarter suburban settings
• Lennox iComfort WiFi Compatible: Pairs with Lennox iComfort S30 WiFi thermostat for full smart home integration, remote access, energy reporting, and predictive maintenance alerts
• Coated Aluminum Coil: Lennox’s exclusive coated aluminum condenser coil resists corrosion from salt air, lawn fertilizers, and acid rain for coastal and suburban environments
• Sound Blanket Compressor Wrap: Acoustic compressor insulation significantly dampens compressor noise — key contributor to the XC21’s industry-leading noise ratings
• 10-Year Parts Warranty: Lennox’s 10-year limited parts warranty when installed by a Lennox Premier Dealer provides long-term investment confidence

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