In the case of a split system air conditioner or heat pump, an AHRI-matched system represents a combination of a given outdoor unit, indoor unit, and/or furnace listed on the AHRI Directory of Certified Product Performance. AHRI's voluntary certification programs conduct third-party laboratory testing to confirm manufacturers claimed performance ratings. The ratings associated with such combination are certified in the form of an AHRI Certificate of Product Ratings. For more information, visit www.ahridirectory.org.