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  • Single-Stage Air Conditioner.
  • The quietest and most efficient single-stage air conditioner you can buy!
  • 10-Year Limited Warranty on covered components including compressor.
  • Offers a SEER efficiency rating up to 18.50 that can save you hundreds of dollars per year in energy bills, even through the hottest summers.
  • Solar ready for the highest possible energy savings. Since it’s part of the Dave Lennox Signature® Collection, the SL-18XC1 can be easily combined with solar roof modules in a SunSource® Home Energy System. You can drastically cut your utility bills and be eligible for a federal tax credit.
  • Innovative SilentComfort™ technology combines thick insulation, vibration resistance, and a specially shaped fan blade to greatly reduce unwanted noises.
  • The Lennox Quantum™ coil handles heat like no other with aluminum alloy construction that resists corrosion in harsh conditions, ideal for coastal environments.
  • The SL-18XC1 is compatible with the advanced control of the iComfort® S30 Smart Thermostat, which delivers unparalleled comfort and connectivity, whether you’re home or away.