If you use propane to heat your home or run appliances, it’s helpful to know how long a large tank will last. Some people go through propane quickly, especially in cold weather, while others use it more slowly over time. How long the tank lasts depends on how much fuel you use and what you use it for.
In this article, we’ll explain what affects propane usage and how to tell when to refill or replace your tank. Understanding this can help you stay prepared, avoid running out, and keep everything working smoothly.
How Long Can a Propane Tank Hold Fuel?
Unlike gasoline or diesel, propane does not degrade over time. It remains stable for years, so the propane inside stays usable as long as the tank is in good condition. This makes propane a great option for long-term storage.
However, a propane tank must be in good condition to remain safe and functional. Here are some things to consider.
1. How Often Does a Large Propane Tank Need to Be Refilled?
Refill schedules vary. A 500-gallon tank may last from a few months to over a year, depending on how much propane is used. A home that runs on propane for heating, hot water, and cooking will go through fuel faster than one that uses it for just a stove or a fireplace. Most large propane tanks have a built-in gauge that shows how much fuel is left. A good rule is to schedule a refill when the tank reaches 20 to 30 percent capacity. Waiting too long risks running out, leading to system shutdowns and extra service calls. To avoid this, professional delivery and replacement services help ensure a steady fuel supply.
2. What Is the Lifespan of a Propane Tank?
A well-maintained large propane tank can last 20 to 30 years or more. Several factors determine how long it remains safe and functional. Its lifespan depends on material quality. Most large propane tanks are made from high-grade steel, and if properly maintained, they can withstand the elements for decades. Weather exposure also has an impact. Tanks exposed to extreme heat, cold, or moisture may corrode faster than those in sheltered areas.
Regular maintenance is crucial. If checked often for rust, leaks, and weak spots, it will likely last longer than one that is ignored. Where it is installed also matters. Tanks placed on stable ground with proper ventilation tend to last longer than those in damp or unstable conditions.
How to Maintain a Large Propane Tank
Taking care of your tank helps extend its lifespan. One important step in its maintenance is checking for rust and damage. Even small dents or rust spots can weaken the tank over time. If corrosion is found, it should be inspected by a professional. Keeping the area around the tank clear is also necessary. Removing leaves, dirt, and debris helps prevent moisture buildup, which can cause rust.
It’s also a good idea to monitor the tank gauge regularly. Monitoring propane levels prevents unexpected runouts and allows for timely refills. Scheduling professional inspections ensures that leaks, pressure issues, or structural damage are caught early. Replacement services ensure continued safety if a tank is too old or damaged.
Can a Propane Tank Expire?
Yes, some propane tanks have an expiration date, but not all do. DOT-certified tanks, which are often smaller and portable, must be recertified after several years. Larger stationary tanks are usually built to ASME standards. ASME tanks, commonly used for in-home use, do not require recertification and can last 20 to 30 years or more before needing replacement. Each tank has a manufacturer’s date stamped on it. If a tank is over 30 years old, it might be time for a replacement.
Signs That a Propane Tank Needs Replacement
Even a well-maintained tank will eventually need to be replaced. Deep rust or corrosion can be a sign that the tank is weakening. The structural integrity could be at risk if there are large rust patches. Dents or physical damage are also causes for concern. A dented tank may be more likely to leak or fail.
A strong propane smell is another red flag. If a leak is detected, the tank should be inspected immediately. Frequent refills can also be a sign of trouble. If a tank runs out of propane faster than usual, there could be a leak or efficiency issue.
What Happens If a Propane Tank Runs Empty?
Running out of propane can cause problems. If a tank is empty, air can enter the lines, requiring a professional service call to restart the system. Some propane systems have safety features that prevent them from working if pressure is lost. It’s best to schedule a refill when the tank reaches 20 to 30 percent to avoid these issues. If a tank does run out, turning off the main valve and calling a trusted propane company are the next steps.
How to Read a Propane Tank Gauge
Understanding the tank gauge helps avoid running out of fuel. The indicator is usually on top of the tank and shows a percentage, not the number of gallons left. A full tank reads 80% because propane expands inside the tank. A reading of 50% means half full, while 30% means it’s time to schedule a refill. If the gauge drops to 10% or lower, there is a risk of running out completely.
Need Help With a Large Propane Tank?
If you have questions about large propane tank maintenance, refills, installation, or replacement, contact MAZ Propane for expert guidance and services.