How Long Does a Tank of Oxygen Last

A tank of oxygen can last anywhere from under an hour to a week or more, depending on the size of the tank and the rate at which the oxygen is used. A small tank may only last an hour or two while a large tank could last several days.

Factors That Affect How Long A Tank Of Oxygen Lasts

The capacity of an oxygen tank is measured in liters. A E size tank, for example, holds about 850 liters of oxygen. But how long does this amount last when you’re using it? It all depends on how you use it.


The temperature can affect how long a tank of oxygen lasts. If it is cold, the oxygen will last longer because the tank is not being used as much. If it is hot, the tank will be used more and the oxygen will not last as long.


One of the main factors that affects how long a tank of oxygen will last is pressure. Most tanks have a regulator that controls the flow of oxygen and will automatically shut off when the pressure gets too low. The pressure in the tank is measured in pounds per square inch (PSI). The higher the PSI, the more oxygen is stored in the tank and the longer it will last.


One important factor that affects how long a tank of oxygen lasts is humidity. In general, oxygen tanks last longer in dryer climates. This is because humid air contains more water vapor, which can cause the oxygen to corrode the tank and degrade more quickly.

How to Make Your Tank Last Longer

Most portable oxygen tanks have a capacity of 680 liters. They are constructed of aluminum and have a valve that controls the release of oxygen. The average person uses about .5 liters of oxygen per minute, so one tank lasts approximately 20-22 hours. There are a few things you can do to make your tank last a little longer.

Use a regulator

If you use oxygen in a tank, you will need a regulator to control the amount of oxygen that flows out of the tank. A regulator is a device that controls the flow of gas from the tank to your nose. It is important to use a regulator because it will help you control how much oxygen you use and it will make your tank last longer.

Check the pressure gauge regularly

One of the most important things you can do to make sure your oxygen tank lasts as long as possible is to check the pressure gauge regularly. The pressure gauge is located on the side of the tank and shows how much oxygen is left.

It’s important to keep an eye on the gauge so you know when the tank needs to be refilled. Most home oxygen tanks have a capacity of around 2,000 PSI, which is enough for most people to use for several days.

If you’re using a portable oxygen concentrator, there’s no need to worry about checking the pressure gauge since these devices automatically regulate the flow of oxygen.

Keep your tank full

It seems simple enough, but one of the best things you can do to make your oxygen tank last as long as possible is to keep it full. A full tank will allow you to use your oxygen for a longer period of time than a tank that is only partially full. Oxygen tanks are filled by weight, so you may not be able to tell at a glance how much oxygen is left in your tank. Check the pressure gauge frequently to see how much oxygen is left and schedule a refill when necessary.

In addition to keeping your tank full, there are a few other things you can do to make it last longer. Avoid using your oxygen when it is not absolutely necessary and be sure to follow all instructions from your doctor or respiratory therapist regarding its use. When using oxygen, be sure not to smoke or be near any open flames, as this can cause the tank to rupture or catch fire. Store your tank in a cool, dry place out of direct sunlight and keep it away from flammable materials such as cleaning products, gasoline or pilot lights.


In conclusion, the size of the tank will greatly affect how long the oxygen will last, but other factors such as rate of use and delivery system can also play a role. Shore Equipment Oxygen has a variety of tank sizes to help you get the most out of your oxygen therapy, whether you use it intermittently or all day long.

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