How to Save on Propane Refills: 2026 Strategies
Seven strategies ranked by actual savings impact, with specific dollar estimates for each.
The single most impactful change. Exchange at $22 for 15lb vs refill at $17 for 20lb - that's $5 saved and 33% more propane. Over 10 refills per season, you save $50-100 and get 50 extra pounds of propane. Details in our refill vs exchange guide.
Refill vs exchange math→Costco at $2.80-$3.00/gallon and BJ's at $2.90-$3.10/gallon are the cheapest refill options. The $65/year Costco Gold Star membership breaks even at 13 refills per year at $5 savings each. Regular grillers (15-25 refills/year) save significantly. Call ahead - not all Costco locations carry propane.
Costco propane guide→Propane prices follow heating demand seasonality. June-August typically have the lowest retail prices. If you can stockpile (refill 2-3 tanks in July for fall BBQ season), you capture the summer discount. EIA data shows a consistent 15-25% winter premium in most regions.
Gas credit cards earn 3-5% cash back on fuel purchases. U-Haul's pay-at-the-pump locations typically qualify as 'gas station' purchases on most rewards cards. Costco Citi Visa earns 4% on gas (including Costco propane). At $17 per refill, 5% back is $0.85 saved per tank. Not huge, but stacks with other savings.
Best gas credit cards→Propane scales are cheap ($15-25 on Amazon) and let you know exactly how much propane remains. Many people refill when the tank is 30-40% full. Waiting until it's near empty means fewer total refills per season. A portable propane scale or gauge pays for itself in 2-3 uses.
For 30lb and 100lb tanks, Tractor Supply is often the only retail option (most exchange networks don't carry them). But for 20lb tanks, running Costco vs Tractor Supply could save $4-6 each fill. Match your retailer to your tank size and frequency. U-Haul is the best universal option for all sizes.
Tank size cost calculator→If your nearest Costco is 30+ miles away, the fuel cost to drive there for $3 savings doesn't pencil out alone. Coordinate with neighbors or plan Costco propane trips when you're already going for groceries. Alternatively, U-Haul at $3.50/gallon with 1,400+ locations is often closer and still much better than exchange.
Gas rewards credit cards earn at U-Haul pay-at-pump locations and Costco fuel stations. A 5% card on $17 refills saves $0.85 per tank - $17 per year at 20 refills. Stack with the other strategies for maximum savings.
Best credit cards for gas purchases →