SEER vs HSPF Calculator — Heat Pump Savings

How do I look up an AHRI reference number?

Search the AHRI Directory of Certified Product Performance (ahridirectory.org) by the outdoor and indoor model numbers, or enter the AHRI reference number directly to pull the certificate. The number verifies the certified SEER2, EER2, and HSPF2 ratings for that specific matched combination — the ratings you should use when comparing equipment or applying for rebates, not the standalone outdoor-unit number.

Related questions

• What is the difference between SEER and SEER2?
• Is a higher SEER2 worth the cost?
• What does HSPF2 measure?
• What is an AHRI match or AHRI certification?