We received the LG Dual Inverter 10,000 BTU Portable AC a few days ago. As instructed we let it rest for 24 hours and then installed it. Took about 20 min. 

Right now we quite satisfied with the purchase. It cools well. 
Please keep in mind. We only used it for three days. Temperatures here are on the low 80‘s, so we will have to see how it copes with higher temps and humidity. 

Also, though the unit runs relatively quiet on medium fan speed, and yes, very quiet on low, it is loud on high. Noise on high about the same as our old unit had all the time. So we are not complaining right now. We use high when needed to get temps down and then medium or low to keep it there. This ac puts out some really cold air, so running on high should note needed all the time. 

So, a positive review. Caveat: we‘ve not used it for along time.