Propane Usage in Washington (WA)

About Propane Usage in Washington

Washington is located in Climate Zone 4, which is characterized by a mixed climate with notable heating and cooling seasons. Winter heating runs 4-5 months, and propane consumption for heating is near the national average. With 5,145 Heating Degree Days per year, Washington's heating demand is near the national average of 5,000 HDD. This means propane furnaces and heating appliances in Washington consume approximately 103% of what they would at the national baseline.

The average propane price in Washington is $2.90 per gallon, which is above the national average of approximately $2.50 per gallon. For a typical full-home propane setup (furnace, water heater, cooking range, and clothes dryer), Washington homeowners can expect to use approximately 1,857.5 gal per year at an estimated cost of $5,386.63. This is $835.60 more than the national average for the same appliance configuration.

Due to the colder climate, insulation quality and furnace efficiency are especially important in Washington. Upgrading from an 80% AFUE furnace to a 95% condensing model can save over 278.6 gal per year. Air sealing and attic insulation improvements can reduce heating propane consumption by 20-30%.

Estimated Propane Usage for Common Setups in Washington

The table below shows estimated annual propane consumption and costs for five common household configurations in Washington, adjusted for the state's 5,145 HDD and $2.90 per gallon average price.

Washington 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 Washington compares to the national average:

States with Similar Climate

The following states have similar Heating Degree Days to Washington and can serve as useful comparison points for propane consumption and pricing.

Saving on Propane in Washington

Reducing propane costs in Washington 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 Washington's cold climate with 5,145 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 Washington make the payback period shorter than in milder states.

On the purchasing side, shop around among propane dealers in Washington. 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