Variable capacity output. As low as 35% of its capacity. 65 stages of cooling. 25 SEER.

Two stage of cooling. 1st stage -60% 2nd stage -100%. 21 SEER.

1 stage of cooling. 18.5 SEER

1 Stage of cooling. 17 SEER

1 Stage of cooling. 15.5 SEER

1 Stage of cooling. 100% all the time, every time