I have had the hot tub a week. I filled it from the washing machine hot water outlet. It was up to temp in a day. Setup was easy, instructions adequate. Loosely throw a moving blanket over the pump in winter when in use. It helps. Chemical Tip: I have owned a number of hot tubs. I recommend skipping the chemicals altogether. Get a colloidal silver generator - $100-200. One quart every month, then change your water as recommended and your tub will remain odor free, crystal clear and pristine. Infact, it is very healthy, like a mineral bath. Use a cap full of oxidizer after each use to oxidize any body chemicals and tanning lotions. I have 2 issues with this tub. The tub is shallow for anyone 6 feet. You have to slouch pretty far to get your shoulders in the water and that becomes uncomfortable fairly quickly. The big problem is the strong rubber smell! Everything smells strongly of rubber, the water, the tub and you, when you get out. It is very strong!! And did I mention, it is very strong. Solve that and this tub is a 5 so far.