Review on ⚡ Electric Submersible Immersion Water Heater with Stainless Steel Guard Cover, Digital LCD Thermometer - Portable Bucket Heater to Quickly Heat 5 Gallons of Water (Yellow) by Robert Worlds

It worked way better than I expected given the price and others. It's good quality and I would buy it again - Be sure to read the safety instructions in detail, especially if you use it with children. Bought to warm our pool - 10ft x 30in. Might get another one in the future to be able to craft 2 buckets at a time. The best method was to fill a 5 gallon bucket with pool water, heat the bucket, pour it out again and repeat the process. After about 30 minutes in the bucket, the water was steaming and might have been close to boiling, but it wasn't boiling yet, so the 20 minute rating is a bit misleading. I would imagine this would be useful if you have young children and a caravan with a small hot water tank - could be cool for heating bath water if there isn't enough in the tank - just be sure to read the SAFETY INSTRUCTIONS.