I am in love.  It is important to read the directions.  I was hesitant to order at first due to the amount of problems about heating the tub however the directions state to pull in the motor for 3 hours to charge before using to inflate the tub.  Immediately following the inflation, you are to indicate the top cover and cover the tub while it heats. It took me one day to go from 66 degree water to 104 degrees.  Great addition to my outdoor oasis.