Propane FAQ: Everything You Need to Know
Answers to the most common propane questions, organized by category. Pricing, tanks, delivery, safety, fuel comparisons, and usage - 29 questions answered with current 2026 data.
Pricing
What is the current average price of propane per gallon?
The national average price of propane is $2.78 per gallon as of April 2026. This is a residential average that includes delivery. Prices range from $2.18 in Texas to $4.15 in Hawaii. Your actual price depends on your state, supplier, contract type, and the time of year you purchase.
Current pricing →Why do propane prices vary so much by state?
The biggest factor is distance from production hubs. Mont Belvieu, Texas and Conway, Kansas are the two major US propane storage facilities. States close to these hubs (Texas, Oklahoma, Kansas) pay the least. States far away (New England, Hawaii) pay the most due to transportation costs. Other factors include winter demand intensity, supplier competition, and state taxes and regulations.
All 50 state prices →Are propane prices higher in winter?
Yes, propane prices follow a predictable seasonal pattern. Summer prices (June-August) average around $2.42 per gallon while winter prices (December-February) average $3.05-3.12 per gallon. The $0.70 per gallon spread means a 400-gallon fill costs $280 more in January than in July. This pattern is driven by heating demand, which accounts for roughly 80% of residential propane consumption.
Seasonal buying guide →How much does it cost to heat a home with propane?
A typical 2,000 sq ft home in a moderate climate spends $2,200-3,400 per year on propane heating, using 800-1,200 gallons. Monthly costs during the heating season range from $300-450. In cold climates, annual costs can reach $4,000-5,000. In mild climates, $1,200-1,800 is typical. The biggest variables are home insulation quality, furnace efficiency, and your local propane price.
Calculate your cost →How can I get the cheapest propane price?
Combine these strategies: own your tank (allows you to shop any supplier), buy in summer when prices are lowest, join a buying cooperative for group discounts, get quotes from 3+ suppliers, and use automatic delivery for per-gallon discounts. Together, these approaches can save $400-800 per year compared to renting a tank and buying at winter spot prices.
12 savings strategies →Is propane getting more expensive?
Propane prices have been relatively stable in 2025-2026 compared to the 2022-2023 price spike. The national average of $2.78/gal is within the normal historical range. Long-term price trends are influenced by crude oil prices (propane is a petroleum byproduct), natural gas production levels, export demand from Asia, and winter weather severity. The EIA projects modest price stability for the near term.
Price outlook →What is a propane pre-buy program?
A pre-buy program lets you lock in a fixed per-gallon price during summer for all your winter deliveries. You pay upfront for a set number of gallons at the current low summer rate. If winter prices rise (as they almost always do), you save 15-25% compared to spot pricing. The risk is that in a year with unusually warm weather, winter prices could be lower than your locked rate, though this is uncommon.
Pre-buy programs explained →Do propane prices include delivery?
Most propane suppliers include delivery in the per-gallon price, but not all. Some charge a separate delivery fee of $25-75. Always ask whether the quoted price includes delivery before committing to a supplier. Also ask about minimum order requirements (typically 100-150 gallons) and any surcharges for small orders, emergency delivery, or remote locations.
Delivery costs explained →Tanks
What size propane tank do I need?
For heating a 1,500-2,000 sq ft home, a 500-gallon tank is the standard recommendation. Smaller homes or those using propane only for cooking and water heating can use a 120-250 gallon tank. Large homes over 2,500 sq ft or homes in very cold climates should consider 1,000 gallons. The right size depends on your annual consumption and how often you want deliveries.
Complete tank guide →Should I rent or buy my propane tank?
Buying is almost always better long-term. Renting costs $50-200/year in fees plus you are locked into one supplier who typically charges $0.20-0.50/gal more than competitive rates. Owning a 500-gallon tank costs $1,700-3,300 and pays for itself in 3-5 years through lower fuel prices and no rental fees. Renting only makes sense if you plan to move within 1-2 years.
Rent vs buy analysis →What is the 80% fill rule?
Propane tanks are only filled to 80% capacity by law and safety standards. Propane expands as temperature rises, and the 20% vapor space prevents dangerous over-pressurization. A 500-gallon tank holds 400 usable gallons. A 1,000-gallon tank holds 800 usable gallons. No reputable supplier will fill above 80%.
Tank sizing guide →How much does it cost to fill a 500-gallon tank?
At the national average of $2.78/gal, filling a 500-gallon tank to 80% (400 usable gallons) costs $1,112. In Texas (cheapest state at $2.18/gal), the same fill costs $872. In the Northeast at $3.14/gal average, it costs $1,256. Summer fills at $2.42/gal cost $968 - saving $280 compared to a January fill at $3.12/gal ($1,248).
Refill costs by tank size →Can a propane tank be installed underground?
Yes, 250, 500, and 1,000 gallon tanks can be installed underground. Underground tanks cost 50-75% more than above-ground due to excavation, special coatings, and cathodic protection requirements. Benefits include better aesthetics and weather protection. Drawbacks include higher cost, harder inspection, and potential corrosion. Some HOAs require underground installation.
Above vs underground →How long does a 500-gallon tank last?
A 500-gallon tank holds 400 usable gallons. For a 2,000 sq ft home using propane for heating and hot water, it lasts 3-5 months during the heating season in a moderate climate. In mild climates, 6-8 months. If only used for cooking and water heating, it can last over a year. The physical tank itself lasts 20-30 years with proper maintenance.
Tank longevity guide →Delivery
How does propane delivery work?
A delivery truck comes to your property and pumps liquid propane into your tank through a fill valve. The process takes 10-20 minutes and you do not need to be home. There are three delivery types: automatic (supplier schedules based on your estimated usage), will-call (you call when you need a fill), and scheduled (deliveries on set dates).
Full delivery guide →What is automatic vs will-call delivery?
Automatic delivery means the supplier monitors your consumption using degree-day calculations and delivers when your tank reaches about 25-30% capacity. Will-call means you monitor your own tank gauge and call the supplier when you need propane. Automatic delivery usually includes a 5-10 cents/gallon discount and eliminates the risk of running out. Will-call gives you more control over timing and supplier choice.
Delivery types compared →Is there a minimum delivery amount?
Yes, most suppliers require a minimum of 100-150 gallons per delivery. Orders under the minimum may incur a small-order surcharge of $25-50. The minimum exists because dispatch and delivery costs are the same regardless of order size. To avoid surcharges, fill when your tank reaches 25-30% capacity rather than waiting until it is nearly empty.
Delivery minimums and fees →How much does emergency propane delivery cost?
Emergency or after-hours delivery typically adds $50-150 to the normal per-gallon price. Weekend and holiday deliveries cost even more. The best way to avoid this expense is automatic delivery or regular tank monitoring. If your tank runs completely empty, you will also need a safety inspection ($50-100) before the supplier can refill.
Delivery costs breakdown →Safety
What does propane smell like?
Propane itself is odorless, but a chemical called mercaptan is added that gives it a strong smell similar to rotten eggs or skunk spray. The smell is intentionally pungent so that even small leaks are detectable. If you smell this odor near your tank, gas lines, or in your home, treat it as a potential leak and follow emergency procedures immediately.
Leak detection guide →What should I do if I smell gas?
Extinguish all flames, do not flip any electrical switches, leave the building immediately, move at least 100 feet away, and call your propane supplier's emergency line and 911 from a safe distance. Do not re-enter until a professional has inspected and cleared the property. These steps are critical because propane-air mixtures are explosive within certain concentration ranges.
Emergency procedures →Do I need carbon monoxide detectors with propane?
Absolutely. CO detectors should be installed on every level and near every sleeping area. Propane appliances can produce carbon monoxide if combustion is incomplete due to poor ventilation, dirty burners, or a cracked heat exchanger. CO is odorless and colorless, making detectors your only reliable warning. Test monthly, replace batteries annually, and replace the unit every 5-7 years.
CO safety guide →How often should propane tanks be inspected?
Residential propane tanks should receive a professional inspection annually, including leak testing, regulator check, and visual assessment. Your supplier typically performs this during delivery. Portable tanks (20-100 lb) must be recertified every 12 years from manufacture, then every 5 years. Check the date stamped on the tank collar.
Maintenance schedule →Fuel Comparisons
Is propane cheaper than natural gas?
No, natural gas is typically cheaper on a per-BTU basis. Propane costs about $3.04 per 100,000 BTU versus natural gas at $1.04. However, propane is available anywhere via tank delivery while natural gas requires a pipeline connection. For rural homes without gas access, propane is the primary alternative. In the Northeast where gas prices are higher, the cost gap narrows somewhat.
Full comparison →Is propane cheaper than heating oil?
Heating oil is slightly cheaper per BTU ($2.49 vs $3.04 per 100,000 BTU), but propane furnaces are more efficient (90-98% vs 80-90% AFUE), which narrows the effective cost difference. Propane also burns cleaner, requires less maintenance, and furnaces last 5 years longer on average. Many Northeast homeowners are switching to propane as their oil systems reach end of life.
Full comparison →Is propane cheaper than electric heat?
Propane is cheaper than electric resistance heating ($2,430/yr vs $3,750/yr for a 2,000 sq ft home) but more expensive than heat pump heating ($1,250/yr in moderate climates). In cold climates below 25F, heat pump efficiency drops significantly and propane can be more cost-effective. The optimal setup in cold climates is often a dual-fuel system combining a heat pump with a propane furnace backup.
Full comparison →Should I switch from propane to a heat pump?
In mild to moderate climates, a heat pump can save $1,000-1,500/yr versus propane alone. In cold climates, a dual-fuel system (heat pump + propane backup) saves 30-40%. A heat pump costs $4,000-8,000 installed with a 3-6 year payback. The heat pump also provides air conditioning. If your propane furnace is aging and needs replacement, it is the ideal time to consider the switch or add a heat pump.
Heat pump analysis →Usage
How many gallons of propane does a house use per year?
A typical home using propane for heating and hot water consumes 800-1,200 gallons per year in a moderate climate. Adding cooking, dryer, and fireplace brings the total to 1,000-1,500 gallons. Cold climate homes can use 1,200-1,800 gallons for heating alone. These figures assume a 2,000 sq ft home with moderate insulation and a 90%+ AFUE furnace.
Consumption by appliance →Does propane go bad?
No, propane does not expire or degrade over time. Unlike gasoline or diesel which can go stale within months, propane maintains its chemical composition indefinitely. A tank filled 5 years ago will burn just as effectively as propane delivered yesterday. This makes propane an excellent fuel for standby generators and seasonal applications like pool heaters where the fuel may sit unused for months.
How do I read my propane tank gauge?
The gauge on your propane tank shows the percentage of capacity filled, not gallons. A reading of 50% on a 500-gallon tank means you have approximately 250 gallons remaining (though only 200 of those are usable due to the 80% fill rule). Most gauges are round dials on top of the tank near the fill valve. Check your gauge every 1-2 weeks during heating season and call for delivery when it reaches 25-30%.
Still Have Questions?
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