A higher SEER rating leads to a more energy efficient unit. The typical SEER rating of air conditioners made before 1992 was around 6.0. The federal government established a minimum standard for units in 1992, requiring a SEER of 10. Residential air conditioners sold in the United States as of 2006 must have a SEER of at least 13. ENERGY STAR qualified Central Air Conditioners must have a SEER of at least 14.
If your central air conditioning unit is more than a dozen years old (SEER 10), you should seriously consider replacing it with an ENERGY STAR qualified model (SEER 14, 15 or 16) that would improve your cooling efficiency by 40%-60%.
Green Irene tells our customers that upgrading an older yet well-functioning air conditioner is generally not worthwhile because the energy savings do not justify the upgrade. But when it’s time to upgrade, get the best air conditioner you can afford. Air conditioner and heat pumps have an estimated life of 12 years, which can be lengthened through proper maintenance. Nevertheless, for best pricing, you can buy 1) off-season; and 2) when you are NOT desperate because your existing air conditioner just broke!
Green Irene also recommends the Cool-n-Save for increased energy efficiency with your central AC unit. This simple device reduces the temperature surrounding your unit, allowing it to operate more efficiently and less often. This can result in an immediate savings of up to 30% on your cooling costs! Check out my website for even more ideas and products to save you money and the planet! GreenIrene.com