Patio Heater Propane Usage
About the Patio Heater
A freestanding propane patio heater provides radiant warmth in outdoor living spaces, extending the usability of patios, decks, and outdoor dining areas into cooler weather. The 40,000 BTU mushroom-style or pyramid-style heater radiates infrared heat in a 15-20 foot diameter circle, warming people and objects directly rather than trying to heat the outdoor air. A standard 20-pound propane tank powers a full-size patio heater for approximately 8-10 hours at maximum output, making refilling or exchanging tanks a regular task for frequent users. The typical 3 hours of evening use during spring, fall, and cooler summer evenings reflects the social and entertaining nature of outdoor heating. Restaurants and hospitality businesses often run patio heaters for longer hours during the dining season. Tabletop versions produce 10,000-12,000 BTU and consume significantly less propane.
Annual Propane Consumption Breakdown
The patio heater consumes propane at a rate of 0.44 gallons per hour at its rated capacity of 40,000 BTU per hour (based on the standard energy content of 91,500 BTU per gallon of propane). Running for approximately 3 hours per day over 6 months per year, the total annual consumption is approximately 239.5 gal.
At the national average propane price of $2.50 per gallon, this translates to an annual fuel cost of $598.82, or an average of $49.90 per month. Since the patio heater is not a heating appliance, monthly costs remain relatively consistent throughout the year at approximately $49.90 per month during active use.
The 250-gallon tank is recommended for homes using only the patio heater on propane, requiring approximately 2 fills per year. If you have additional propane appliances, calculate your total consumption using our propane usage calculator to determine the appropriate tank size for your combined needs.
Patio Heater Cost Across Different States
The table below shows how propane costs for the patio heater vary across representative states. Differences primarily reflect local propane pricing, since non-heating appliance usage is consistent across climates.
| State | HDD | Price/Gal | Gal/Year | Cost/Year |
|---|---|---|---|---|
| Minnesota | 7,981 | $1.85 | 239.5 gal | $443.13 |
| New York | 5,882 | $3.40 | 239.5 gal | $814.39 |
| Virginia | 3,960 | $2.75 | 239.5 gal | $658.70 |
| Texas | 1,711 | $2.30 | 239.5 gal | $550.91 |
| Florida | 683 | $2.95 | 239.5 gal | $706.61 |
| Colorado | 6,128 | $2.55 | 239.5 gal | $610.80 |
| California | 2,870 | $3.20 | 239.5 gal | $766.49 |
| Ohio | 5,641 | $2.35 | 239.5 gal | $562.89 |
Efficiency Tips for Your Patio Heater
Getting the most efficiency from your patio heater involves proper usage habits and regular maintenance. Ensure the unit is operating at its designed specifications by having it professionally inspected annually. Check gas connections for leaks using a soap and water solution on all fittings. Clean burner ports and orifices to maintain proper flame patterns and complete combustion. An improperly adjusted burner wastes propane and can produce dangerous carbon monoxide.
Usage optimization is the primary way to reduce propane consumption for non-heating appliances. For water heaters, lowering the thermostat to 120 degrees saves 6-10% on water heating costs. Installing low-flow showerheads and faucet aerators reduces hot water demand by up to 25%. For cooking appliances, matching pot size to burner size, using lids to retain heat, and preheating only when necessary all reduce propane consumption while producing the same results.
If your patio heater is more than 10-15 years old, consider replacing it with a newer, higher-efficiency model. Modern propane appliances are significantly more efficient than older designs, and the propane savings can offset the purchase price within a few years. Look for Energy Star certified models that meet or exceed the highest efficiency standards in their category.
Patio Heater Compared to Similar Appliances
The following table compares the patio heater to other appliances in the outdoor living category by BTU rating and annual propane consumption.
| Appliance | BTU/hr | Hrs/Day | Gal/Year | Cost/Year |
|---|---|---|---|---|
| Patio Heater (this appliance) | 40,000 | 3 | 239.5 gal | $598.82 |
| Pool Heater | 400,000 | 2 | 1,330.7 gal | $3,326.78 |
| Spa / Hot Tub Heater | 125,000 | 1 | 332.7 gal | $831.69 |
| Gas Lights (per fixture) | 2,500 | 8 | 79.8 gal | $199.61 |
Frequently Asked Questions
How many gallons of propane does a patio heater use per year?
A patio heater rated at 40,000 BTU per hour, running approximately 3 hours per day for 6 months per year, uses approximately 239.5 gal of propane per year at the national average. This estimate is relatively consistent across states since usage does not depend heavily on climate. At the national average price of $2.50 per gallon, the annual cost is approximately $598.82.
How much does it cost to run a patio heater on propane?
At the national average propane price of $2.50 per gallon, a patio heater costs approximately $598.82 per year, or $49.90 per month averaged across the year. The monthly cost varies seasonally, with relatively consistent costs throughout the year. Your actual cost depends on your state's propane price and your specific usage patterns.
What size propane tank do I need for a patio heater?
For a patio heater as your only propane appliance, a 250-gallon tank is recommended. This provides adequate capacity for approximately 6 months between fills. If you have multiple propane appliances, you will need to account for the combined consumption of all appliances when choosing a tank size. Most homes with a furnace plus other propane appliances need a 500-gallon or 1,000-gallon tank.