Review on UL-Listed 1500W Kingwork Bucket Water Heater with Thermostat and Auto Shutoff - Submersible Pool Heater for Rapidly Heating 5 Gallons of Water, featuring Full 304 Stainless-Steel Guard by Kenneth Harris

Was really impressed with how quickly he could heat a 4 gallon bucket of cold water. It took about 10 minutes to cook. I use it to heat a small bathtub that I use outside. When submerged directly in the bathtub, it took her about five hours to burn herself from cold tap water. (I have no idea how many gallons my tank is, but it's about 2 feet wide, 3 feet high, and 4 feet long). Obviously I'm not sitting in the heater when the heater is submerged in it, I wait for it to reach temp and then hold 4 gallons. a bucket outside the tub that I heat up and add as my tub cools down. Then, using the same bucket, I simply pour out the water from the already heated tub and heat it up. Continue this process while you enjoy your bath. Went like clockwork. I don't know what I was expecting, but I was also surprised by the size of the immersion heater. The piece of metal is about 1 1/2 feet long and about 5 inches wide at its widest point. When the heater is plugged into an outlet, a small indicator light will illuminate at the end of the plug to let you know it's working.