Depending on your propane tank’s size, refill times will vary. For a 20-pound tank, you can expect to need a refresh after up to 20 hours of usage, according to Superior Propane. Larger tanks will last longer, but knowing exactly how much propane you have left is always helpful. After all, there’s nothing worse than firing up a grill or firepit only to run out of juice halfway through an event. TikTok user @kathyfordd18 shows her followers exactly how to measure where your propane levels are with a steaming mug of hot water.
After she pours the water over the tank’s side, she feels down until it gets cool, since the water will heat up the metal. The propane will remain cool, signaling where your levels are at. Keep the water hot, but not boiling, to avoid hurting yourself. The reason this hack is foolproof is because the propane absorbs heat.