I am very pleased with this Black and Decker portable  air condition.  It was delivered earlier than I had expected.  I was glad  it came while my son was visiting, he set it up for me  in about  twenty minutes. It took about twenty five minutes  and it lowered the temperature in the room  from 82 to 72  degrees . Also , I had the pleasure of speaking with a very helpful person  at Wayfair who was able to answer my questions , which aided in my purchase. Thank you.  I will recommend this machine.