Cost of Household Propane Tank Refill
Buying a propane tank starts around $5, with a high of $3,500 and average propane tank prices are somewhere around $800 to $1,000.
Size | Propane Cost |
20 lbs. | $40 |
100 Gallons | $500 |
500 Gallons | $1,500 |
1,000 Gallons | $2,500 |
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When you compare propane tank prices, size makes the biggest difference when you need a propane refill. Also, how much propane goes into a propane tank depends primarily on the cylinder size. Companies measure propane tank capacity in pounds or gallons.
One gallon of propane weighs a little over 4 lbs. This means that a manufacturer or reseller might label a 420-lb propane tank as a 100-gallon unit. Confirm that you have the right measurement before you buy. A conversion error might result in the purchase of a much larger or smaller propane tank model than what you need.
There is some inconsistency in the way that manufacturers advertise propane tank sizes. For example, a 5-gallon unit might run as a 15-lb or 20-lb model, with the same brand and price. Companies may list a 420-lb size as 100 or 120 gallons. If you are unsure of the size, ask a professional for help.
Cost of Small Propane Tanks for Grills
The best capacity of propane tank depends on your use. One-gallon propane bottles are ideal for people who want to do a little cooking with gas grill while camping or for a tractor supply. Homeowners may prefer propane tank between 5 to 50 gallons to run an outdoor grill or provide fuel for a backup generator.
Smaller propane tank models are generally stationary, with the option to take to a filling station or exchange for a refill. The lesser the propane tank unit, the more often you may go for a propane tank refill. Make sure you feel comfortable safely disconnecting and reconnecting the propane tank.
Small propane tank you need for minimal purposes ranges from $5 to $700. It usually does not carry additional installation costs since most homeowners can hook propane tank up without much effort
Price of Large Propane Tanks
The cost to buy a propane tank of 100 to 120 gallons starts at about $400, rising to $3,500 for 1,000 gallons. Most larger models may require a permanent installation. Bigger units are appropriate for multiple uses:
- 250 gallons to run a few home appliances
- 500 gallons for most or all systems in the home
- 1,000 gallons for larger homes or heavy consumption

