Some HVAC devices such as mini-split AC units come with a SEER rating instead of an EER rating. If you’re like us and like to compare specification sheets, you can calculate EER if you know SEER.
Here is a simple calculator that converts SEER to EER. Just input SEER rating and the converter will calculate the value of EER rating:
SEER To EER Chart
Here are some converted SEER into EER:
Example: We have a mini-split ac unit with a 20 SEER rating. How many EER does that unit have? If you simply look at the SEER to EER chart above, you can see that such a unit has a 17.5 EER rating.
Mr COOL DIY mini-split systems, for example, are known to have high SEER and thus high EER ratings.
You can read more about the equations that determine the EER and SEER relationships as well as EER to SEER calculator here.