When is the Best Month to Buy Home Heating Oil?

fall leaves

One of the benefits of home heating oil is that you can buy it on your own schedule. Some house have multiple tanks which last for several months between fills. In this post we explain the best month to buy home heating oil.

What Causes Heating Oil Prices to Fluctuate?

To determine when to buy home heating oil, it is important to understand why prices fluctuate. There are three primary drivers of heating oil prices to be aware of:

  1. Crude oil supply and demand.
  2. Local heating oil supply and demand.
  3. How you buy your heating oil (i.e. whether you order heating oil online or rely on automatic delivery).

Crude Oil Supply and Demand

Crude oil prices have the most significant impact on heating oil prices. Since home heating oil is a derivative of crude oil, the global supply and demand for crude oil can move heating oil prices up or down. Crude oil is the base fuel that is used in gasoline, diesel, jet fuel, heating oil, and lubricants in all sorts of machinery.

When the global demand for crude oil declines – so does the price. This is because production of oil does not stop immediately, and producers still need to offload their supply. This scenario played out in early 2020 as the COVID-19 pandemic ground global travel to a stop. All of sudden, nobody was flying on airplanes or even commuting to work anymore. As a result, there was suddenly too much oil being produced, and prices dropped dramatically. In April, 2020 prices for heating oil futures contracts even dipped below zero! We broke this down in a pretty cool post here when this happened. At the time, folks were paying as little as $0.99 per gallon for heating oil on FuelSnap!

As COVID-19 ground global travel to a halt in April, 2020, crude oil futures prices went negative. There was suddenly more oil supply than demand and producers needed to offload their supply. This directly impacted heating oil prices at the time, which we broke down in this blog post here.

Local Heating Oil Supply and Demand

Local heating oil supply and demand also impacts heating oil prices. In densely populated areas on Long Island, there are hundreds of thousands of oil-heated homes, and many heating oil dealers to choose from. As a result, the dealers must be very efficient and offer competitive pricing and fast delivery. The end result: heating oil prices in Long Island tend to be lower than other parts of the Northeast.

In less densely populated areas, there may be only one or two heating oil dealers to choose from. They can charge significantly more for heating oil, and don’t even have to deliver right away. Where there is a reduced supply like this, heating oil prices tend to be much higher.

There is also the question of the best month to buy heating oil. You may expect to get a better price during the summer / off-season. However, heating oil dealers tend to make fewer deliveries during the off season. As a result, they are less inclined to lower prices and be very competitive. Below is the historical price for heating oil over the past 30 years. The takeaway: the effect of crude oil supply and demand on prices far outweighs any seasonal effects on heating oil prices.

heating oil historical prices
Heating oil prices fluctuate with the market price for crude oil. As can be seen over the past 30 years, heating oil prices tend not to fluctuate with the seasons. In other words, cold weather generally does not lead to increased heating oil prices. Source: MacroTrends.net.

Will-Call or Automatic Heating Oil Delivery

While the price for heating oil will move up or down with the market, the biggest factor that dictates the price you pay for heating oil is whether you buy as needed (will-call) or have automatic delivery. Automatic delivery is billed as a ‘premium’ service and comes with a premium price. This price premium is generally around 40 to 50 cents per gallon, but as high as $1.00 per gallon or more with some dealers! Imagine a winter where you use 1200 gallons of heating oil, and your neighbor paid $1200 less than you for the same oil. That’s the difference between automatic delivery and will-call. If you’re on automatic delivery, then the best month to buy home heating oil does not apply, since the oil will be delivered on the company’s terms.

You can take advantage of significant savings on heating oil by only buying heating oil as needed on a site like FuelSnap. FuelSnap dealers compete for your business by offering the best prices for heating oil possible. And if you’re worried about running out of oil, just install a Smart Oil Gauge to send you alerts when the tank is low.

Bottom Line: Order Heating Oil Any Month of the Year

So, when is the best month to order heating oil? Since heating oil prices depend on the market price for crude oil, it does not matter which month you order heating oil. The only exception to this is when it is really cold, as you may find it difficult to get heating oil in a timely manner.

Even during a cold snap, you can always check heating oil prices near me on a site like FuelSnap. You will see which dealers are available in your town, as well as when they can make the delivery. You will save hundreds of dollars on average compared to automatic delivery over the course of a season.

Just remember, do not let your tank get too low waiting for a good price. If you run out of oil in the middle of the winter, you make have frozen pipes and a much more expensive problem on your hand. At that point, the best month to buy home heating oil no longer matters. As we like to say, the best thing to do is reorder at a quarter (tank) – no matter what month of the year.

Happy heating,


p.s. About that link to the Smart Oil Gauge in the article…As an Amazon Associate I earn from qualifying purchases.

How to Read a Heating Oil Tank Gauge

Empty Home Heating Oil Gauge

In an oil-heated home, nothing is more important than making sure you don’t run out of heating oil. Even if you pay a premium for Automatic Heating Oil Delivery, it’s important to occasionally check your home heating oil tank to make sure you do not run out. In this post, we’ll walk through the nuances of reading a typical float-style heating oil tank gauge and introduce some alternative ways of monitoring your fuel oil tank.

How to Read a Float Gauge in a Heating Oil Tank

Most fuel oil tanks come with a traditional float-style gauge. This fuel oil tank gauge features an arm with a float attached to its end, and a hinge. There is a plastic vial with a disk that indicates how full the heating oil tank is. As the float lowers, so does this disk. For a detailed breakdown of how an oil tank works, check out our blog post how an oil tank works here.

How a home heating oil tank works. The tank includes fill line, vent line, vent alarm / whistle, and gauge.
A typical heating oil tank features a float gauge with a hinged arm. As the float lowers, the visible disk on the top of the heating oil tank moves down accordingly.

To read the level of a float gauge, look for the tick marks on the plastic vial. These typically indicate Full, 3/4, 1/2, and 1/4. Because the home heating oil tank is rounded at the bottom, these gauges are not very accurate when the tank is low. As a good rule of thumb, always order heating oil online at around 1/4 full. This gives you a few days for the oil to arrive before running out.

Note: Some ‘experts’ say you should look at where the top of the disk lines up with a tick mark, rather than the bottom. These float gauges are nowhere near precise enough to make such a distinction, so just look for where the middle of the disk lines up with a tick mark to determine the level.

Multiply the level shown by your fuel oil tank size to approximate how much heating oil is in the tank. For a 275 gallon tank, 1/4 full is approximately 0.25 * 275 = 69 gallons. For a 330, 1/4 full is approximately 0.25 * 330 = 82.5.

A heating oil float gauge features a disk inside that shows how full the tank is. This should only be used as an approximation of how full the tank is.
Most home heating oil tanks feature a float gauge like this one here. The yellow disk can be used to approximate how full the fuel oil tank is. Because of the rounded bottom of a fuel oil tank, the gauge will go from 1/4 to empty quicker than it will go from 1/2 to 1/4. As such, it is very important to reorder oil when the gauge is reading 1/4 full to prevent a runout.

How Accurate is a Heating Oil Float Gauge?

Since these are not precision heating oil tank gauges, they should only be used as an approximation of how full a tank is. Because of the moving parts inside, these can also be prone to wear over time. If you suspect your heating oil float gauge is stuck, simply unscrew the plastic vial by hand. Use your finger to press the disk down. If the gauge is not stuck, the disk should easily move down, then slowly float back up and remain up, indicating the arm is moving freely.

One of the ways a heating oil float gauge can get stuck is by simply rotating inside the fuel oil tank. This can happen over time, and the result is the float is wedged against the side of the tank, unable to move.

Another problem that can arise is the float itself becoming less buoyant over time. As seen below, the float can develop sludge that prevents it from floating on top of the oil.

Home heating oil float gauges can break down over time. In this particular gauge, the float was covered with sludge after many years of use.
Heating oil float gauges are susceptible to many issues over time, including sludge build-up as shown here.

How Much Heating Oil Should I Order and When?

Once you know how much oil is in your tank, you’ll need to figure out how much to order. Use the guide below to determine how much oil your tank can take.

Amount to Order = Tank Capacity – Current Level

For a 275 gallon vertical heating oil tank, the max capacity is 250 gallons. The reason it is not 275 gallons is because there is always an air space left at the top of the tank after a fill. This allows the oil to expand in the fuel oil tank and prevents the tank from being over-filled.

If your 275 gallon vertical heating oil tank is 1/4 full, we know that 275 * 0.25 = ~69 gallons.

Amount to Order = 250 – 69 = 181 gallons or fewer. An order of 150 gallons, in this case, should easily fit in the fuel oil tank.

A 275 gallon home heating oil tank holds 240-250 gallons depending on its orientation. Use this table as a guide to know how much oil to order.
A 330 gallon home heating oil tank holds 288-305 gallons depending on its orientation. Use this table as a guide to know how much oil to order.

By using the above guides, you should be able to determine when to order heating oil for your home. Find the best and cheapest heating oil dealers near you with FuelSnap to avoid being overcharged by local oil companies!

What if I Want to Order 200 Gallons?

Since many dealers offer a discounted price for 200 gallons, you may be tempted to wait until your tank is lower that 1/4 full to order. This can be risky with a float gauge, as they are notoriously inaccurate when the fuel oil tank is that low. Instead, we recommend two options if you would like to get your tank that low:

  1. A Smart Oil Gauge. This will report your oil level to within a couple of gallons. The Smart Oil Gauge knows the specific geometry of your heating oil tank as well. As such, it can account for the rounded edges and the reduced amount of oil in the bottom of the tank.
  2. A yard stick. Using a yard stick to measure the specific number of inches of oil in the tank will give you a good idea of how much oil is in the tank. This is obviously cumbersome, but much more reliable than the float gauge. Once you’ve measured the level, in inches, check it against a tank chart to determine the level.
Smart Oil Gauge - WiFi Heating oil gauge - will show exactly how much oil is in a tank, and give a countdown to a quarter tank.
Using a Smart Oil Gauge is the best way to determine how much heating oil is in your fuel oil tank. The Smart Oil Gauge works extremely well when the tank is low, and will give a countdown of days until the level will be at 1/4 or 1/8. Using the app’s ‘shop for oil’ feature, you will also see the maximum amount of heating oil you will be able to order at any given time. Choose from local oil companies, and order heating oil securely with a credit card when the fuel oil tank is low.

How Much Heating Oil Will I Use in a Day?

This is a great question to be asking yourself as you plan your next heating oil order. The first factor is whether you are using oil for heat only, or heat and hot water. If you are using heating oil for hot water, you will continue to consume oil year-round. Your usage may be reduced to 1-2 gallons per day in the summer months, and as high as 6 or more gallons per day in the winter months. This depends on the size of your house, how well-insulated it is, and other factors. The age of your heating system and keeping it well maintained are also contributing factors.

The only good way to know how much oil is used on any particular day is by installing a device like the Smart Oil Gauge. The Smart Oil Gauge uses an ultrasonic sensor to measure the oil level every hour. It then graphs this data over time, giving you usage statistics.

Smart Oil Gauge is a heating oil tank gauge that will show you how many gallons per day you are going through.
The Smart Oil Gauge allows you to tell exactly how many gallons of home heating oil your home uses over an hour, day, week, month, or year. These statistics are extremely helpful when adjusting the thermostat throughout the year.

Use the Float Gauge to Approximate Your Heating Oil Tank Level

Now that you understand how to read a float gauge, don’t forget that it is only an approximation. For a precise tank level when the tank is low, consider a Smart Oil Gauge or using a yard stick. Both of these options will give you a much better indication of the tank level. When you’re ready to order heating oil, check out a site like FuelSnap to make sure you’re getting the best deal possible on heating oil.

Happy heating,