Propane Usage in Illinois (IL)
About Propane Usage in Illinois
Illinois is located in Climate Zone 5, which is characterized by a cool climate with significant heating demand. Furnaces typically run 5-6 months per year, and propane consumption for heating exceeds the national average. With 6,136 Heating Degree Days per year, Illinois's heating demand is significantly above the national average of 5,000 HDD. This means propane furnaces and heating appliances in Illinois consume approximately 123% of what they would at the national baseline.
The average propane price in Illinois is $2.25 per gallon, which is near the national average of approximately $2.50 per gallon. For a typical full-home propane setup (furnace, water heater, cooking range, and clothes dryer), Illinois homeowners can expect to use approximately 2,110.7 gal per year at an estimated cost of $4,748.98. This is $197.95 more than the national average for the same appliance configuration.
Due to the colder climate, insulation quality and furnace efficiency are especially important in Illinois. Upgrading from an 80% AFUE furnace to a 95% condensing model can save over 316.6 gal per year. Air sealing and attic insulation improvements can reduce heating propane consumption by 20-30%.
Estimated Propane Usage for Common Setups in Illinois
The table below shows estimated annual propane consumption and costs for five common household configurations in Illinois, adjusted for the state's 6,136 HDD and $2.25 per gallon average price.
| Configuration | Gal/Year | Cost/Year | Winter Monthly | Summer Monthly | Tank |
|---|---|---|---|---|---|
| Heating Only (80K BTU Furnace) | 1,567.7 gal | $3,527.38 | 276.7 gal | 26.3 gal | 1000-gallon |
| Full Home (Furnace + Water + Cooking + Dryer) | 2,110.7 gal | $4,748.98 | 321.9 gal | 71.6 gal | 1000-gallon |
| Cooking + Water Heater Only | 499 gal | $1,122.79 | 41.6 gal | 41.6 gal | 250-gallon |
| Large Home with Fireplace | 2,954.2 gal | $6,647.01 | 456.1 gal | 96.3 gal | 1000-gallon |
| Full Home + Pool Heater | 3,441.4 gal | $7,743.07 | 432.8 gal | 182.5 gal | 1000-gallon |
Illinois vs National Average
For a standard full-home propane setup (80,000 BTU furnace, 40-gallon water heater, cooking range, and clothes dryer), here is how Illinois compares to the national average:
Illinois
National Average
States with Similar Climate
The following states have similar Heating Degree Days to Illinois and can serve as useful comparison points for propane consumption and pricing.
| State | HDD | Avg Price | Climate Zone |
|---|---|---|---|
| Illinois (this state) | 6,136 | $2.25 | 5 |
| Colorado | 6,128 | $2.55 | 5 |
| Nebraska | 6,312 | $1.95 | 5 |
| Connecticut | 5,958 | $3.45 | 5 |
| Massachusetts | 5,930 | $3.55 | 5 |
| New York | 5,882 | $3.40 | 5 |
Saving on Propane in Illinois
Reducing propane costs in Illinois starts with understanding where your propane goes. For homes using propane as the primary heating fuel, space heating typically accounts for 60-75% of total propane consumption, making it the primary target for efficiency improvements. Water heating is usually the second largest use at 15-25%, followed by cooking and clothes drying at 5-10% combined.
Given Illinois's cold climate with 6,136 HDD, the highest-impact improvements are upgrading insulation, sealing air leaks, and ensuring your furnace is operating at peak efficiency. Have your furnace serviced annually, including cleaning the burner, checking the heat exchanger, and verifying proper combustion. Consider upgrading to a high-efficiency condensing furnace (95%+ AFUE) if your current unit is older than 15 years or rated below 90% AFUE. The fuel savings in a cold climate like Illinois make the payback period shorter than in milder states.
On the purchasing side, shop around among propane dealers in Illinois. Prices can vary by $0.30-0.50 per gallon between competitors in the same area. Pre-buy contracts that lock in a summer price for winter delivery typically save 10-20% compared to market-rate pricing during peak season. If your usage is high enough, consider a larger tank (500 or 1,000 gallon) to take advantage of bulk delivery pricing, which is typically $0.10-0.20 per gallon cheaper than small-volume deliveries.
Frequently Asked Questions
How much propane does a house in Illinois use per year?
A typical home in Illinois using propane for heating, water heating, cooking, and clothes drying consumes approximately 2,110.7 gal per year. This estimate is based on Illinois's 6,136 Heating Degree Days and average propane price of $2.25 per gallon. Homes using propane only for non-heating applications like cooking and water heating use significantly less, typically 200-350 gallons per year regardless of climate.
What is the average cost of propane in Illinois?
The average retail propane price in Illinois is approximately $2.25 per gallon. This price varies by dealer, delivery volume, season, and contract type. Winter prices tend to be 15-30% higher than summer prices. Pre-buying propane at a fixed price before winter or joining a buying cooperative can help reduce costs. Always compare quotes from multiple dealers in your area.
What climate zone is Illinois in?
Illinois is in Climate Zone 5, which is classified as a cool climate with significant heating demand. The state has 6,136 Heating Degree Days annually, which is above the national average of 5,000 HDD. This means heating appliances in Illinois use approximately 123% of the national baseline consumption.