Don't buy this hot tub unless you want to face expensive repairs when the relays burn out. This is a known issue with this company's hot tubs, but they won't stand by their product. On the other hand, when it does work, it is a good hot tub and easy to maintain. Just don't buy it if you can't afford to spend hundreds of dollars every few years replacing a part they know is bad. Just google hotspring hot tub relay board problem.