This spa is amazing. I have had it for a year now and it works great. It stays clean - I change the filter every 4 months and put 1 T of chlorine in a week. It is low maintenance and very energy efficient. I have had four back surgeries and this spa is a life saver for me. It has saved me countless dollars in shots and chiropractors. It keeps me limber and relaxes the sore tired muscles of my back after a long day.