The one on the right is 10 SEER (he had two); the one on the right is a 17 SEER (the new one). The new one has a separate dehumidifier and a two-stage compressor. It doesn’t have to cut on full blast every time, which cut Paul’s energy cost for cooling by 40%.

Here’s the video:

Heat Pump —Paul Wolff, Tybee Island, Chatham County, Georgia, 17 February 2012.
Video by Gretchen Quarterman for Lowndes Area Knowledge Exchange (LAKE).

-jsq