Most U.S. households pay for space and water heating from either propane or natural gas; typical pricing varies by unit and delivery method and is driven by fuel unit cost, delivery, and equipment. This article compares propane vs natural gas prices so buyers can estimate total fuel cost and switching expenses.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Propane (per gallon) | $2.00 | $2.50-$3.00 | $4.00 | Bulk fills, rural delivery variance |
| Natural Gas (per therm) | $0.60 | $1.00-$1.50 | $2.50 | Utility rates vary by region |
| Annual 2,000 sq ft home heating | $800 | $1,200-$2,500 | $4,500 | Depends on fuel, efficiency, climate |
| Conversion (propane→gas) | $1,500 | $3,500 | $8,000 | Includes piping, meter, appliance conversion |
Content Navigation
- Typical Household Fuel Price: Propane Gallons and Natural Gas Therms
- Cost Breakdown: Fuel, Delivery, Equipment, Taxes
- How Seasonal Demand and Fill Size Change the Price
- What Changes a Quote Most: Tank Size, Annual BTU Use, and Delivery Distance
- Ways To Cut Your Propane or Natural Gas Bills
- Regional Price Differences That Affect Your Budget
- Conversion Costs: Converting From Propane To Natural Gas
- When Comparing Quotes: What To Ask Suppliers
Typical Household Fuel Price: Propane Gallons and Natural Gas Therms
Propane is sold by the gallon while natural gas is billed by the therm (100,000 BTU). Expect about $2.00-$4.00 per gallon for delivered propane and $0.60-$2.50 per therm for natural gas depending on region and season.
Assumptions: 2,000 sq ft home, 80% AFUE furnace, moderate Midwest prices.
| Measure | Low | Average | High |
|---|---|---|---|
| Propane (gal) | $2.00 | $2.50-$3.00 | $4.00 |
| Natural gas (therm) | $0.60 | $1.00-$1.50 | $2.50 |
| Equivalent energy cost (per MMBtu) | $20 | $25-$40 | $70 |
Cost Breakdown: Fuel, Delivery, Equipment, Taxes
Fuel bills combine commodity charges, delivery or distribution, equipment amortization, and taxes or fees. On average 60%-80% of a household bill is the fuel commodity itself; the rest is delivery and fixed charges.
| Materials | Delivery | Equipment | Taxes | Overhead |
|---|---|---|---|---|
| $2.00-$4.00/gal propane or $0.60-$2.50/therm gas | $25-$100 per fill (propane) or $10-$50 monthly service charge (gas) | $500-$8,000 one-time (tank, line, conversion) | 5%-15% of bill | Retailer margin 5%-20% |
Assumptions: Delivered propane requires periodic tanker delivery; natural gas has monthly distribution fees.
How Seasonal Demand and Fill Size Change the Price
Seasonal swings raise propane prices in winter while natural gas spikes during cold snaps and pipeline constraints. Propane savings on a large fall bulk fill: buying 500+ gallons can reduce per-gallon price by $0.10-$0.40.
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Numeric thresholds: price steps often at 100-gallon, 250-gallon, and 500-gallon fills; smaller deliveries under 100 gallons can add $0.20-$0.75/gal. Natural gas peak pricing can increase by 20%-100% on extreme cold with high demand.
What Changes a Quote Most: Tank Size, Annual BTU Use, and Delivery Distance
Major variables include tank capacity, annual BTU consumption, and distance from supplier. Homes using under 500 gallons/year pay significantly more per gallon than homes using 1,000+ gallons.
Examples with thresholds: homes <500 gal/yr see $0.20-$0.60 higher per gallon; homes >1,000 gal/yr often qualify for lowest bulk rates. Delivery distance over 15 miles can add $10-$50 per fill for rural propane deliveries.
Ways To Cut Your Propane or Natural Gas Bills
Controlling scope and timing lowers cost: bulk buys, prebuy contracts, smart thermostats, and sealing/insulation reduce fuel use. Switching to a timed bulk purchase (prebuy 500+ gallons) can reduce annual propane expense by 10%-25% for many households.
Other reductions: maintain existing equipment to preserve efficiency, compare three local suppliers for delivery and service fees, and consider higher-efficiency appliances when replacement is due.
Regional Price Differences That Affect Your Budget
U.S. regional spreads are large: Northeast and rural areas pay more for propane delivery; Midwest and Gulf Coast often have lower propane production prices. Expect propane in New England to be 10%-40% higher than Midwest; natural gas utility rates can be 20%-50% higher in some states.
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| Region | Propane avg/gal | Natural gas avg/therm | Delta vs National Avg |
|---|---|---|---|
| Northeast | $2.80-$4.00 | $1.20-$2.00 | +10% to +35% |
| Midwest | $2.20-$3.00 | $0.80-$1.40 | -5% to +5% |
| South (Gulf) | $2.00-$2.80 | $0.60-$1.20 | -10% to -20% |
Conversion Costs: Converting From Propane To Natural Gas
Converting a home from propane to natural gas typically costs $1,500-$8,000 depending on distance to the main and appliance changes. Expect $2,500-$5,000 for a typical suburban conversion if a gas line is nearby; remote tie-ins exceed $6,000.
Cost components: utility main extension fees, meter and regulator, piping inside the house, and appliance conversion or replacement.
When Comparing Quotes: What To Ask Suppliers
Request per-unit fuel price, delivery fees, service charges, minimum delivery, price protection or prebuy options, and any tank rental or purchase fees. Ask for a written breakdown showing commodity price, delivery fee, and fixed monthly charges to compare apples-to-apples.
Include expected annual consumption in estimates and get at least three quotes for reliable comparison.
Tips for Getting the Best HVAC Prices
- Prioritize Quality Over Cost
The most critical factor in any HVAC project is the quality of the installation. Don’t compromise on contractor expertise just to save money. - Check for Rebates
Always research current rebates and incentives — they can significantly reduce your overall cost. - Compare Multiple Quotes
Request at least three estimates before making your choice. You can click here to get three free quotes from local professionals. These quotes include available rebates and tax credits and automatically exclude unqualified contractors. - Negotiate Smartly
Once you've chosen a contractor, use the proven strategies from our guide — How Homeowners Can Negotiate with HVAC Dealers — to get the best possible final price.