Definition
AHRI 210/240 is a certification standard developed by the Air-Conditioning, Heating, and Refrigeration Institute that establishes test procedures and rating conditions for residential air conditioners and heat pumps. This standard specifies how manufacturers measure and report Seasonal Energy Efficiency Ratio (SEER2) and Heating Seasonal Performance Factor (HSPF2) ratings under standardized conditions.
Test Conditions and Ratings
AHRI 210/240 defines testing at outdoor temperatures of 95°F for cooling and 47°F for heating, with indoor conditions at 80°F and 50 percent relative humidity. Tested capacities typically range from 18,000 to 60,000 BTU/hour for residential split systems. The standard requires testing of matched indoor and outdoor units to ensure published ratings represent real-world performance of complete systems.
Certification and Compliance
Manufacturers must submit test data to AHRI for independent verification and certification listing. SEER2 values typically range from 15 to 23 for modern air conditioners, while HSPF2 ratings span 8 to 12 for heat pumps. Certified ratings help contractors select equipment meeting IECC requirements and customer efficiency preferences.