
We bought this because the heater in our 4 person hot tub stopped working. This works pretty well, but I think 2 would be better suited for this purpose to heat it up faster. I'll order another one right away. For the price, this is a great option. We used a piece of wood to hang them in the hot tub without submerging them completely. In addition, the outer metal (with holes) does not heat up! This is a great feature!

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