We just replaced our AC system, and while SEER 22 would have saved on electricity, it would have required several thousand dollars more in new duct work. The h

We just replaced our AC system, and while SEER 22 would have saved on electricity, it would have required several thousand dollars more in new duct work. The high efficiency systems require not only variable speed air moving capability, but ducts that work with it as well. We went from SEER 10 to SEER 15. With the rebalancing that the contractor did, our house is much more comfortable with the thermostat at 80 than it was under the old system at 73.