I needed to buy something quick because my home central air was not working right, and my repair appointment wasn’t until the following week. This unit got me through some HOT days!!! I was able to sleep at night! It’s very efficient. Although it’s rated for 15 amps, it only draws 10.4 amps! I like it so much that I decided to leave it installed in the room. But I absolutely love how portable it is. I can just roll it to another room, install the vent to a window, and I’m back in business! All functions work perfectly, of course because it’s an LG!