I've been doing cold plunges @ spas for over a decade (AN LOVE IT), and decided I wanted to have a unit at my home. Initially I bought a low cost inflatable unit and a freezer outside the house and would use blocks of ice to cool water to ensure I was committed. This experiment confirmed that I definitively wanted to have a cold splash but was very inconvenient, uncomfortable and was unclear if I could regulate the temperature in unless I change the water was unhygienic. I was recommended to the plunge by Anne Tierney , and I have to tell you the Eria unit has by far & away exceeded my expectations in EVERY regard. Why? 1) Ability to control the temperature to the to within one degree 2) the ability to change temperature remotely 3) A really beautiful aesthetic look & matching mat 4) a custom design cover to save on electricity 5) AND .. truly world class customer service team that is super responsive. This is truly a remarkable product that will add to your health and improve your fitness goals. Henry Osti .... PS - Highly recommend playing your favorite song to amp up the experience !!