Why is the price difference between an 11 SEER and a 12 SEER system so much less than the difference between a 12 SEER and a 13 SEER unit?
It takes a different technique, extra parts and more time and expertise to hook up a 13 or greater SEER unit than an 11 or 12 SEER. But if you plan to live in a house three or more years, it’s smart to spend a little more now than you may have intended to safeguard against some problems that may come up later, to escalating energy costs, to repair bills.
