Energy efficiency ratio 2 (EER2)” of a federally regulated consumer product

means the ratio of the average rate of space cooling delivered to the average rate of electrical energy consumed by the air conditioner or heat pump. Determine these rate quantities from a single test or, if derived via interpolation, determine at a single set of operating conditions. EER2 is expressed in units of Btu/watt-hour, as determined using 10 C.F.R. section 430.23(m) (Appendix M1 to subpart B of part 430). When determined for a ducted coil-only central system, EER2 must include the section 3.3 and 3.5.1 default values for the heat output and power input of a fan motor found in 10 C.F.R. section 430.23(m) (Appendix M1 to subpart B of part 430).