First let me say, Alaskan is a good company. New unit installed and right away noticed an issue with the unit. It ran constantly, took too long to cool to the desired temp, and is noisy when turning on and shutting off. After 4 four follow up calls, thermostat replaced, attic crawl entrance repaired, a leaky Freon connection was repaired and loose screws on the outside unit were tightened down. The unit is still very noisy, but cools the house very well. have not seen the energy savings as of yet, but hopeful that the savings will come as the unit gets broken in.