How Much Does a Propane Tank Refill Cost for a Home

Propane is a common energy source for home heating, cooking, water heating, and even backup generators. If you rely on propane, you’ve likely wondered: how much does it cost to refill your tank? The answer isn’t a single number—it depends on several factors, including the size of your tank, current market prices, and how much propane you actually need. This guide will walk you through average costs, what influences the price, and how to estimate your next refill.

Average Propane Tank Refill Costs

Propane is typically priced per gallon. For residential deliveries, the price can range from $2.00 to $4.00 per gallon, though it can go higher during peak demand or in certain areas. The total cost of a refill is simply the number of gallons you need multiplied by the price per gallon, plus any fees.

Here’s a quick look at what a full refill might cost for common home tank sizes. Note that you rarely fill a completely empty tank—most companies only fill to 80% capacity for safety, and you usually refill when the tank is at 20-30%.

20-pound tank (grill tank): Holds about 4.7 gallons. A refill might cost $10-$25.
100-pound tank: Holds about 23 gallons. Refill cost: $50-$100.
250-gallon tank: Holds 200 gallons at 80% capacity. If empty, refill cost: $400-$800.
500-gallon tank: Holds 400 gallons at 80% capacity. If empty, refill cost: $800-$1,600.
1,000-gallon tank: Holds 800 gallons at 80% capacity. If empty, refill cost: $1,600-$3,200.

Most homeowners don’t fill from empty. For example, if your 500-gallon tank is at 20% and you fill it to 80%, you need 300 gallons. At $2.50 per gallon, that’s $750.

Factors That Affect Propane Refill Cost

Several variables can change the price you pay. Understanding them can help you plan and potentially save money.

Current Propane Prices

Propane is a commodity, so its price fluctuates based on supply and demand, crude oil prices, and global events. Prices are usually higher in winter when demand for heating peaks, and lower in summer.

Tank Size and Capacity

The larger the tank, the more gallons it holds, and the higher the total refill cost. However, larger tanks often get a lower price per gallon because you’re buying in bulk.

How Much Propane You Need

You don’t always fill your tank completely. The cost depends on how many gallons are added. A partial refill costs less than a full one.

Delivery and Service Fees

Some suppliers charge delivery fees, hazmat fees, or minimum delivery charges. These can add $20-$100 or more to your bill, especially for small deliveries.

Seasonal Demand

As mentioned, winter demand drives prices up. Buying propane in the off-season (summer/early fall) often means lower prices.

Location

Prices vary by region due to transportation costs, local competition, and state regulations. Areas farther from supply hubs tend to have higher prices.

Tank Ownership vs. Rental

If you rent your tank from a supplier, you may be locked into their refill prices. Owning your tank gives you the freedom to shop around for the best price.

Refill vs. Exchange: What’s the Difference?

For small portable tanks (like 20-pound grill tanks), you have two options: refill or exchange. Exchange involves swapping your empty tank for a full one at a retail location. It’s convenient but often more expensive per gallon. Refilling at a station that fills tanks is usually cheaper, but you need to find a location and wait. For home heating tanks (100 gallons or more), refilling via delivery is the standard.

How to Estimate Your Propane Refill Cost

You can get a rough estimate with a few simple steps:

Check your tank gauge. It shows the percentage of propane remaining. If you have a 500-gallon tank at 30%, you have 150 gallons (since 500 x 0.30 = 150). But remember, tanks only fill to 80%, so usable capacity is 400 gallons.
Determine how many gallons you need. Subtract your current gallons from the 80% fill level. For a 500-gallon tank, 80% is 400 gallons. If you have 150 gallons, you need 250 gallons.
Find the current price per gallon. Check with local suppliers or online price trackers. Prices are often listed per gallon for residential delivery.
Multiply gallons needed by price per gallon. Add any fees.

Example: 250 gallons x $2.75 = $687.50, plus a $50 delivery fee = $737.50.

Ways to Save on Propane Refills

Fill up in summer. Prices are typically lowest when demand is low.
Buy in bulk. Larger tanks and bigger orders often get a lower per-gallon rate.
Compare suppliers. Call around or use online tools to find the best price in your area.
Own your tank. This lets you shop freely for the cheapest propane.
Keep your tank full. Don’t wait until you’re empty; running out can lead to emergency fees and safety issues.
Use a budget plan. Many suppliers offer fixed-price or budget billing to spread costs and lock in rates.
Improve energy efficiency. Better insulation and efficient appliances reduce how much propane you use.

When to Refill Your Propane Tank

It’s best to refill when your tank reaches 20-30% capacity. This gives you time to schedule delivery before you run out. Many suppliers offer automatic delivery based on usage, which can be convenient but may come at a premium. If you manage your own refills, set a reminder to check the gauge regularly, especially during heating season.

Conclusion

The cost to refill a home propane tank is not fixed—it depends on tank size, current prices, fees, and how much you need. On average, you can expect to pay $2 to $4 per gallon, so a typical 500-gallon refill might cost $400 to $1,000 or more. By understanding the factors and planning ahead, you can manage your propane expenses more effectively. For more helpful guides on home maintenance and everyday costs, explore our other articles.