I thoroughly researched the available portable air conditioners. The LP14IVSM was highly rated and was also recommended in a NY Times article. I liked the fact that the LG unit only has one exhaust hose. I purchased an extra window panel and was able to create a panel that fits in our sliding door. We use the LG air conditioner in an area that is approximately 900 square feet and it works great. The unit is quieter than I expected, even  when it’s on high.