A version of this article appears in the January/February 2007 issue of Home Energy Magazine.
January 01, 2007
Inside and Outside SEER? I have a home warranty policy and I purchased a rider to “upgrade my AC unit to a SEER-13 rated to comply with new Federal Guidelines.” The inside coil is defective, or so I have been informed by my home warranty company. They say that by replacing the coil, they can achieve the SEER-13 rating without replacing the 17-year-old outside unit. My impression of the federal mandate is that due to the age of the unit installed, they cannot. So I contend that they should replace both outside and inside components to achieve both the electrical and environmental standards. Am I mistaken? Tommy Bowdenvia e-mail Technical Editor Steve Greenberg responds: The SEER is a rating that includes a specific outdoor unit and a specific indoor coil. A SEER rating based on a new indoor coil and an old outdoor unit could in theory be obtained, and in theory a SEER-13 result is possible. Though the SEER is a strong function of the indoor coil, it is difficult to get a high-performance system (even in theory) with an older outdoor unit. An old outdoor unit is likely to have significant compressor and coil degradation ...
To read complete online articles, you need to sign up for an Online Subscription.