Works great! I work for a glue distribution company and sometimes we get barrels of temperature sensitive material. Previously we had to set up a tent and only heat it to keep the temperature inside the drum because the gas heaters in the camp weren't strong enough to keep the temperature stable enough. Luckily we were given a temperature sensitive drum the day of arrival and our outside temp was in the teens single digits (Fahrenheit). We connected it like in the picture and no problem. The heater seems to work the same as a lava lamp. The base heats up, the warm material rises, cools and falls, maintaining a constant rotation. We are very happy with this heater!