How Long Will Heating Oil Last?

How long will heating oil last?  When should I fill my oil tank?  These are important questions, and the charts below can help you find the answers

. Much like the kind of driving you do affects your car’s gas mileage, the age and condition of your oil furnace, the size of your home, and outside temperatures all affect how much heating oil you will use in a given timeframe.

The chart below is based on an average Maryland home, and will help you answer how long will heating oil last. Adjust your estimates accordingly, erring on the side of caution to prevent running out of heating oil.

In addition, we strongly suggest you keep your heating oil level above 30 gallons. The chart below uses 25 gallons for easy conversion to other oil quantities.

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


Do you need to know: How Much Oil is in My Tank? Click the link for the answers you need!

If you need a heating oil delivery, please call us or Contact Us online. In a pinch, you can also use diesel or kerosene instead of heating oil to hold you until delivery can be made. If you use diesel or kerosene, please be sure to purchase these products from a reputable gas station.

Not only do customers who choose Automatic Delivery get a $0.05 per gallon discount, they never have to ask how long will my heating oil last, because they know Tevis will deliver when their tank is between 1/4 and 1/3 full. And if you do run out of heating oil, we will deliver heating oil to you immediately 24/7 and credit your account $50!

Trust your heating oil supply to Tevis Energy: Family owned and operated in Maryland and Pennsylvania since 1932.