This is a great value-fit perfectly but didn't work when I got it. It would turn on, then off after ten seconds. I got little help from tech support. Remembered a similar circumstance with a previous appliance. Since returning it was a 50 mile trip each way, I decided to take the cover off-sixteen screws but all the same size, I turned the fan on with the same result-turned off in ten seconds. I reached in to see if the fan blade was stuck on packing. Found the fan was stopped because the coolant piping went across the fan blade keeping it from spinning/ I manually bent the pipe 1/4" to free the fan blade and it spun freely. I then turned the ac on and it worked perfectly since-no long trip, no return! Works great now!