How Long Will My Heating Oil Last?


How Long Heating Oil Lasts

When you’re planning to have guests over for the holidays or concerned about the threat of a snowstorm next week, understanding how long heating oil in your tank will last is important. There are many different factors that influence how long heating oil lasts and when you should call Penn-Mar Oil Company to place your next order for high-quality fuels in Maryland and Pennsylvania.

The Condition of Your Furnace

When you purchase a new car, you expect to get the best possible mileage for every tank of gas you put in it. If your car is older or in poor condition, you expect to get much less from every gallon. The same thing is true for a heating oil furnace. If your furnace is older or in poor condition, it will not be able to use fuel oil as efficiently. However, if your furnace is new and regularly maintained, your furnace will be able to use heating oil very efficiently. A newer furnace will take longer to use heating oil than an older furnace.

The Weather Outside

The weather outside will also directly affect how long heating oil lasts. If the weather is colder, homeowners typically use more heating oil than when it is warm out. If your home is not properly sealed or you have old windows and doors, your fuel usage might dramatically increase during the winter months. How long heating oil lasts largely depends on what the weather is outside.

The Amount of Oil In Your Tank

The amount of heating oil in your tank is often the biggest factor in how long heating oil lasts. The chart below is based on the average homeowner in Maryland or Pennsylvania, and it shows approximately how long your heating oil will last based on average usage. Always err on the side of caution when ordering heating oil to eliminate the risk of running out. Never let your oil level drop below 30 gallons without having another order on the way.

Average Outside Temperature (°F) Approximate Gallons Used in 24 Hours Approximate Days 25 Gallons Will Last
15 7.8 3.2
20 7.0 3.6
25 6.2 4.0
30 5.3 4.7
35 4.5 5.6
40 3.7 6.8
45 2.8 8.9
50 2.0 12.5

If you rely on heating oil as your primary fuel source, Penn-Mar Oil Company encourages you to enroll in our free automatic delivery service to never worry about running out.

Never Worry About How Long Heating Oil Will Last with Penn-Mar Oil Company

Penn-Mar Oil Company is proud to be the preferred heating oil provider of Pennsylvania and Maryland residents since 1936. We offer high-quality kerosene, heating oil and off-road diesel, all backed up by our exceptional customer service and convenient delivery service. To order heating oil, please call us today at (717) 276-9617 or visit us online.