1. Upon purchase of a new dwelling. 2. To replace an older system of the same brand. 3. To replace an older system of another brand. 4. Within a year after purchasing a dwelling with no central air. 5. 2-4 years after buying a dwelling with no central air system. 6. Over 4 ye...
S Cabinet air leakage less than 2.0%at 1.0in.W.C.and cabinet air leakage less than 1.4%at 0.5in.W.C.when tested in accordance with ASHRAE standard 193 .Use of the AHRI Certified Mark indicates a manufacturer’s participation in the program. For go to www.ahridirectory.org.