How Long Does Propane Last?
How long does propane last depends on tank size, how many appliances you run, and your climate. A 500 gallon tank lasts 1 to 3 months for whole-home heating. A 1000 gallon tank lasts 2 to 6 months at the same usage. This guide answers how long does propane last for every standard residential tank size.
How Long Does Propane Last by Tank Size?
Based on whole-home heating consumption in moderate climateWhy How Long Propane Lasts Varies So Much
How long does propane last depends primarily on how much propane your appliances consume per hour and how often they run. A propane furnace in a cold climate running 8 hours a day in January consumes far more propane than the same furnace in a mild climate running 2 hours a day. Climate is the biggest variable.
A typical propane furnace uses 1 to 1.5 gallons per hour at full capacity. A standard residential home in a moderate climate running a furnace, water heater, and range might consume 3 to 6 gallons per day during peak winter months. At 5 gallons per day, a 400 gallon fill lasts 80 days. At 8 gallons per day in a cold climate, the same fill lasts 50 days.
Does Propane Expire or Go Bad?
Propane itself does not expire. Stored in a properly sealed ASME certified tank, propane has an indefinite shelf life. What degrades over time is the tank itself, not the propane. Tanks require periodic recertification. Used propane from a properly maintained tank is as good as new propane. The question of how long does propane last in a sealed tank has a simple answer: indefinitely.
Choosing a Tank Size Based on How Long Propane Lasts
If you want your tank to last through an entire heating season without a refill, size up. Most residential properties in moderate climates can get through winter on a 500 gallon tank. Cold climate properties and homes with multiple propane appliances should consider a 1000 gallon tank to avoid mid-winter refills. Full propane tank size guide.
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How Long Does Propane Last FAQ
Common questions answeredA 500 gallon tank holds 400 gallons at the 80% fill rule. For a typical home using propane only for heating in a moderate climate, the tank lasts 1 to 3 months through winter. In a cold climate running the furnace heavily, the same tank may last only 6 to 8 weeks. Adding a generator, pool heater, or multiple appliances reduces the run time further. View 500 gallon tanks from $2,200.
A 1000 gallon tank holds 800 gallons at the 80% fill rule. For whole-home heating in a moderate climate, the tank lasts 2 to 6 months. Large farms, cold climate properties, and homes with multiple high-consumption appliances should choose a 1000 gallon tank to avoid mid-season refills. View 1000 gallon tanks from $3,200.
Propane stored in a properly maintained sealed tank lasts indefinitely. Propane is a stable gas that does not degrade over time. The tank itself requires periodic inspection and recertification per NFPA 58 standards, but the propane inside remains usable.
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