We purchased this product as our window air conditioner was not cooling our bedroom well and putting in and taking out the window unit was reeking havoc on my new window!
Installation with venting through the window took time and was a bit tricky, but my husband is an engineer so he figured it out nicely.  We love how the unit cools the room quickly and has many options: cooling high/low speed, oscillating vents, fan only option etc. Well worth the slightly higher price, good brand and cools quickly and efficently.