- Efficiency claim based on comparison of air conditioning and heat pump products’ SEER as published in AHRI (January 2015). Actual system combination efficiency may vary; consult AHRI for exact system efficiencies. Precision claim based on the cooling capacity range of the XC/XP25-036 units as compared to equivalent-sized competitive variable capacity compressor units.
- **Efficiency ratings established per AHRI’s test standard: ANSI/AHRI 210/240-2017 of two-stage central AC/HP equipment.
- ***Air conditioners/heat pumps have sound ratings established per AHRI’s test standard: AHRI 270-08 (August 2014). The SL18XC1 has the lowest sound rating of any single-stage air conditioner of any major U.S. brand of air conditioner equipment. Efficiency claim based on comparison of single-stage air conditioner products’ SEER as published in AHRI in June 2015. The SL18XC1 has a maximum rated efficiency of 18.50 SEER.