Posted: April 13, 2026

How Many Propane Tank Sizes Are There?

Hill Gas can help you determine the size that works for you

Choosing a propane tank that is the right size for your home is important for many reasons.

A tank that is too small is going to require refills regularly and may not end up being large enough to hold the amount of fuel you actually need. This is going to increase what you are paying on fuel delivery fees and there isn’t anybody who likes the sound of that. A propane tank that is too big can be an unnecessary and wasteful expense. A tank that is the correct size for you and your home will save you money on installation costs as well as fuel costs.

Hill Gas is here to help you determine what size will work best for you!

How to choose the right size propane tank

Multiple factors have to be taken into account when determining what size propane tank is right for you. You need to consider what exactly you are using propane for, how much propane you anticipate using on a daily basis, the size of your home (this is particularly important if you are using propane for home heating purposes) and the age and condition of your propane-powered appliances (older appliances that haven’t been well maintained will need more fuel than newer and properly cared for appliances).

Propane tank sizes

Here is a guide to some standard residential propane tank sizes:

• 40 to 100-pound cylinders: Smaller size grill tanks like this are known as propane cylinders. They are typically used for gas grills, patio heaters and outdoor cook stoves. They are also commonly used in RVs.
• 120 to 150-gallon propane tanks: If you are using propane to power just one or two appliances within a home such as a water heater, a space heater, a cooking range or a clothes dryer, tanks in this size range can handle the job.
• 250-gallon propane tanks: Homes that are powering three or more appliances with propane can count on this size tank.
• 500-gallon propane tanks: These tanks can handle full home heating, powering a home’s water heater and powering multiple appliances and pieces of equipment at a time.
• 1,000-gallon propane tanks: A large tank like this can help power a full home heating system and warm a home’s water all while also powering a generator and pool heater.

How full is a full propane tank?

When you are trying to determine what size propane tank to get for your home you should also keep in mind that a tank should never be more than 80% full at a time. You need the remaining space to let the fuel expand, which is inevitable as temperatures rise.

Therefore, a 120-gallon tank can only safely hold 96 gallons of fuel at once. 400 gallons of fuel can safely go into a 500-gallon tank.

Find the right propane tank at Hill Gas

The team here at Hill Gas can work hand in hand with you to find the propane tank that will work best for you and your home here in Central Texas. Our technicians can then install this tank on your property, connect it to your home and perform all the necessary safety testing.

Contact Hill Gas today to become one of our many satisfied propane customers.