Application Guidelines

EER Rating vs. Equipment payback
The published EER rating represents efficiency of cooling products at peak load, or
95ºF (35ºC). This rating is driven by utility companies that are concerned with power
consumption at peak demand periods. In most locations, peak load is experienced for a
very short time during a year (see charts below). The even-size ICP inverter units are
designed for high efficiency at lower load conditions, which represents the vast majority
of the cooling season. This is why the SEER ratings are high, but the EER is not as high
as other high-efficiency products. Some local incentives and rebates require higher EER
ratings, however many regions do not require a higher EER rating. The even-model
sizes focus on high SEER ratings which allows for smaller unit design and competitive
price. For markets requiring higher EER ratings, the odd-size units will be available for
these applications.
A cost analysis should be done to compare benefit of a rebate with higher EER models
vs. the cost of the lower EER models. Things to consider regarding rebates containing
EER requirements:
(Cost of qualifying EER equipment) – (rebate amount) = ______________
Cost of ICP inverter equipment = _____________
In many cases, the cost of the even-size ICP inverter product may be less than a
competitive product less the rebate.
2.2%
0.2%
0.1%
27.0%
6.3%
0.7%
7.8%
1.2%
1.5%
0.4%
St Louis, MO Baltimore, MD Orlando, FL Phoenix, AZ Dallas Ft
Worth, TX
Minneapolis,
MN
Sacramento,
CA
Portland, OR Richmond, VA Atlanta, GA
Avg. Percent of Hours 95° F and Above
97.8%
99.8%
99.9%
73.0%
93.7%
99.3%
92.2%
98.8%
98.5%
St Louis, MO Baltimore, MD Orlando, FL Phoenix, AZ Dallas Ft Worth,
TX
Minneapolis, MN Sacramento, CA Portland, OR Richmond, VA
Avg. Percent of Cooling Hours 70° to 90° F