The age of your HVAC system/air conditioning unit and its efficiency rating can help you determine if it’s time for a new unit.
Many conditioners installed just 10 or 20 years ago are considered energy inefficient by today’s standards, meaning that not only is your home not getting as comfortable as quickly as it could be, but you could be spending more money to do so.
Air conditioners in the United States use an energy efficiency system called SEER, which stands for “seasonal energy efficiency ratio.” A SEER rating tells you how effective an AC unit is and how much energy it needs to run annually; a higher SEER rating means the system is more energy efficient.
In St. Louis County today, the average minimum SEER rating of new air conditioners is 13. Just 10 years ago, many AC units only had a SEER rating of 10, and many systems installed over the past 20 years commonly operate at an 8 SEER rating or less. That means, if your home is running on an AC unit that is 10 or more years old, it could very well be time for an upgrade; a 13 SEER air conditioning system on average uses 18% less energy than a 10 SEER AC unit, meaning big savings for you!