10 Best Flow Sensors 2025

If you're in the market for a reliable flow sensor for your hot tub, look no further than our top 10 list of the best flow sensors available. We reviewed and scored many products in the flow sensor category and found products ranging from a 7.1 score up to a 9.2 score. At the top of our list is the Sundance Spas 6560-860 Hot Tub Flow Switch Blue, which boasts a top score of 9.2. This flow sensor is not only accurate but also durable, making it a favorite among hot tub owners. So if you're tired of dealing with unreliable sensors, make the switch to Sundance Spas and enjoy a worry-free hot tub experience. Keep reading to discover more top-rated flow sensors that will make your life easier.