What are these new SEER2/EER2/HSPF2 ratings and how do I model them?

On Jan 1 2023 DOE mandated that manufacturers rate HVAC equipment with new efficiency metrics.  EnergyPro 9.0 includes the ability to directly input your equipment efficiency using the new ratings, it is selected at the Central System Library, you can choose to use the new or old ratings.  For older versions of EnergyPro, you will need to convert the new rating to the older system per the conversions below:

Table 1. Equations Used to Convert Respective  Ratings System Type Equation Split System Air Conditioner and Heat Pump SEER = SEER2 X 1.05 Split System Air Conditioner and Heat Pump  EER = EER2 X 1.04  Split System Air Conditioner and Heat Pump HSPF = HSPF2 X 1.17 Packaged Air Conditioner and Heat Pump SEER = SEER2 X 1.04 Packaged Air Conditioner and Heat Pump EER = EER2 X 1.04  Packaged Air Conditioner and Heat Pump HSPF = HSPF2 X 1.18 Space Constrained System SEER = SEER2 X 1.01  Space Constrained System HSPF = HSPF2 X 1.17 Small Duct High Velocity System SEER = SEER2 X 1.00  Small Duct High Velocity System HSPF = HSPF2 X 1.18 Source: California Energy Commission

---

Categories: 2. General

← Frequently Asked Questions