120-Gallon and 124-Gallon Propane Tanks

120-Gallon and 124-Gallon Propane Tanks

These residential propane tanks come in two different orientations (vertical or horizontal) with two similar capacities (120-gallon or 124-gallon). Because of the minor size difference, we’ve included them together here.

Vertical tanks of this size are typically around 54” tall and 30” in diameter. Their horizontal counterparts are approximately 68” long and 24” in diameter. These tanks are sometimes called 420-pound tanks. They hold between 96–100 gallons of propane when full.

In most cases, they can fuel up to two residential appliances. Some people use them for a water heater, fireplace, or space heater, or alongside other small appliances like cooktops or dryers.

Sometimes, two of these tanks are paired together—or manifolded—to emulate the capacity of a 250-gallon tank.