Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
These are energy efficiency ratings. The higher the number, the less energy the system uses. Make sure the unit you purchase has a SEER/EER rating certified by the Air Conditioning and Refrigeration Institute (ARI). See the links at the top of this page in the right column for more information on SEER and ARI.
