Las Vegas Air Conditioning and AC Repair

Information may not be reliable

To reduce wasted energy, the U.S. Department of Energy has established minimum efficiency standards for central air conditioning system. Every unit is given an efficiency rating, called a SEER (Seasonal Energy Efficiency Rating). 
This is listed on the yellow Energy Guide label posted on each unit. It's very important to look at these ratings-the higher the number, the more efficient the unit and the lower the cost to provide a given amount of cooling.
The minimum allowable SEER rating for new central air conditioners 13. The most efficient models have SEERs of 15 to 19. When buying, watch the terminology. "High efficiency" models are actually those that meet the minimum SEER standard of 13.