Unleashing the True Potential of Propane: Discover How Long a Generac Generator Can Run!


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Are you considering a Generac generator for your power needs, but wondering how long it will run on propane? An important factor to consider when choosing a generator is its runtime on fuel. Propane is a popular choice for fuel because it burns cleanly and has a longer shelf life than gasoline. But, how long can you expect a Generac generator to run on propane? The answer varies depending on the size of the generator, the propane tank’s size, and the load being powered.

Generally, a Generac generator can run for at least 24 hours on a 500-gallon propane tank. However, this can vary depending on factors such as the generator’s size, use, and maintenance. In this blog, we will explore the factors that affect the runtime of Generac generators on propane.

We will also provide you with tips on how to maximize the fuel efficiency of your generator so that you can have reliable backup power during an outage. So sit back, relax, and let’s dive into the world of Generac generators.

Generac Propane Consumption

Many people ask “how long will a Generac generator run on propane?” The answer varies depending on the size of the generator and the degree of load it carries. However, Generac generators are known for their impressive fuel efficiency, particularly when running on propane. For instance, a 22 kW air-cooled generator with a full load will use roughly

39 gallons of propane per hour. At that rate, a 500-gallon propane tank could power that 22 kW generator for around 147 hours. That’s over six days of continuous use! When you consider the cost savings and convenience of propane over gasoline or diesel, it’s easy to see why many people choose to run their Generac generators on propane.

Just be sure to keep a sufficient supply of propane on hand, especially during emergencies and extended power outages.

Calculating Your Generac’s Propane Usage

Calculating your Generac’s propane usage is an essential step in ensuring you have enough fuel to power your generator during a power outage or other emergencies. The amount of propane your generator consumes will depend on the size and wattage of your unit, as well as the length of time you use it. While newer Generac models are designed to be more energy efficient, it’s still important to monitor your propane levels regularly to avoid running out of fuel.

One way to estimate your propane usage is to refer to your generator’s user manual, which should provide you with an estimate of how much fuel your unit uses per hour. Additionally, you may consider investing in a propane usage monitor, which can provide you with real-time information about your generator’s propane levels and consumption. With careful planning and monitoring, you can ensure that your Generac always has enough propane to keep you powered up.

how long will generac run on propane

Factors Affecting Generac’s Propane Consumption

Generac propane consumption can be influenced by various factors, including the generator’s wattage, the number of appliances connected to it, and the frequency of usage. The higher the wattage of the generator, the greater the amount of propane it will consume. Similarly, the more appliances connected to the generator, the more fuel it will utilize to power them.

The frequency of usage also affects propane consumption, as generators that are used more frequently will consume more fuel over time. Other factors that can impact consumption include environmental conditions, such as temperature and altitude, as well as regular maintenance of the generator. Ensuring that your generator is regularly serviced and well-maintained can help to optimize its propane consumption and extend its lifespan in the long run.

Average Run Time of Generac on Propane

Many people opt for propane as a fuel option for their Generac generator due to its cost-efficiency and portability. Generac generators run on either propane or natural gas, but how long they can run on propane is a commonly asked question. The average run time of a Generac on propane is dependent on the size of the generator as well as the capacity of the propane tank.

On average, a 20-pound propane tank can power a mid-sized Generac generator for around 10-12 hours. However, this is just an estimate and the actual run time will depend on how much power the generator is using at any given time. It is important to note that regular maintenance of the generator and propane tank is crucial for continued optimal performance and run time.

With proper care, a Generac generator on propane can provide reliable backup power for an extended period, making it a popular choice for those in areas prone to power outages.

Generac’s Fuel Consumption Compared to Competitors

When it comes to fuel consumption, Generac’s propane-powered generators are leading the way in the market. Generac’s average run time on propane is impressive and far outperforms its competitors. With a fuel tank that can hold up to 20-gallon propane, a Generac generator can run for up to 10 hours at 50% load.

This means you can enjoy the comforts of electricity for an extended time without worrying about fuel consumption. In comparison, some of Generac’s competitors struggle to provide similar run times, making Generac’s propane generators a top choice for those looking for reliable power backup solutions. With a Generac generator, you can rest assured that you won’t run out of power when you need it the most.

Real-World Examples of Generac’s Propane Run Time

Generac’s propane run time is a crucial factor to consider when shopping for a backup power generator. The average run time for Generac on propane depends on the size of the generator and the load it is carrying. Smaller units, such as the Generac 22kW, can run for up to 30 hours at a 50% load on a 500-gallon propane tank.

Larger units, like the Generac 38kW, can run for up to 24 hours on a 1000-gallon propane tank at a 50% load. Having an efficient fuel source like propane ensures that you can maintain power to essential appliances and devices for an extended period during power outages. Generac’s propane run time should be taken into account when deciding on the best generator for your home or business.

Factors that Impact Your Generac’s Run Time on Propane

Generac’s run time on propane. When it comes to owning a Generac generator, one of the most important aspects is its run time, which ultimately ensures that your home remains powered during an outage. The run time of a Generac generator on propane may vary considerably, depending on several factors.

Typically, the average run time of a Generac generator on propane is around 10 to 15 hours at 50% load capacity. However, various factors such as the size of the generator, its efficiency, and your overall usage can have an impact on the run time. Additionally, environmental factors such as temperature and altitude can play a crucial role as well.

Therefore, to maximize the run time of your Generac generator on propane, it’s important to consider these factors and get a proper understanding of how to use the generator efficiently. With proper usage, your Generac generator can provide the necessary power to keep your home running during outages and emergencies for extended periods.

Maintenance Tips for Prolonged Generac Propane Run Time

“How long will Generac run on propane?” is a common question among homeowners and business owners who rely on Generac propane generators for their power needs. The answer depends on several factors, including the capacity of the generator, the size of the propane tank, and how well the generator is maintained. To ensure long-lasting run time, regular maintenance is crucial.

This includes changing the oil and filters, checking the spark plug, inspecting the air intake, and cleaning the carburetor. It’s also essential to keep the propane tank full and free of debris that could clog the lines. By following these maintenance tips, you can get the most out of your Generac propane generator and enjoy reliable power during times of need.

In terms of specific run time, it’s best to check the manufacturer’s specifications for your particular Generac model and propane tank size to estimate how long it will run.

Regular Generator Maintenance

Regular generator maintenance is crucial for ensuring uninterrupted power supply during emergencies and prolonged run times for Generac propane generators. First and foremost, checking the fuel level regularly and refilling as needed is vital. It’s also important to inspect the air filter and replace it if it’s dirty.

Additionally, changing the oil and oil filter regularly is key to keeping the generator running smoothly. It’s also recommended to inspect the spark plugs and clean or replace them if they are worn out. Lastly, keeping the generator in a dry and secure location when not in use can help prevent damage from the elements and unauthorized access.

By following these maintenance tips, Generac propane generators can provide reliable power for extended periods of time, making them a valuable investment for any home or business.

Cleaning the Generac’s Propane Tank

Maintaining your Generac propane tank is crucial for prolonged run time. One essential aspect of this maintenance is cleaning the propane tank regularly. A dirty tank can lead to blockages and a decrease in fuel flow, ultimately impacting the generator’s performance.

To clean the tank effectively, first, turn off the gas supply and remove the regulator. Then, detach the tank and rinse it with warm water and soap solution, ensuring you remove any residue. Next, rinse it with clean water and leave it to air-dry completely.

Once it’s dry, reattach the regulator and reconnect the tank to the Generac. Regular cleaning of your propane tank can prevent issues that could lead to costly repairs and improve the generator’s overall performance. So, don’t forget to incorporate this task into your routine maintenance schedule.

Final Thoughts on Generac Propane Run Time

If you’re wondering how long your Generac generator will run on propane, it largely depends on the propane tank’s size and the generator’s fuel consumption rate. On average, Generac propane generators can operate for around 10-12 hours on a standard 20-pound propane tank. However, you can increase or decrease this time depending on the tank size and the generator’s wattage.

It’s also a good idea to keep a few spare propane tanks on hand in case of a prolonged power outage. Overall, propane is a reliable and efficient fuel source for Generac generators, and with proper maintenance, you can enjoy uninterrupted power for an extended period.


After extensive research and calculations, it can be said that the answer to the age-old question, “how long will generac run on propane?” is simple: it depends. The duration of the generator’s operation on propane will be influenced by multiple factors such as the generator’s size, propane tank’s capacity, and the appliances being powered. However, one thing is for sure- investing in a Generac propane generator is a smart move in the long run for anyone who values reliability and convenience during power outages.

So, sit back, relax, and let your Generac generator do the work while you enjoy uninterrupted power.”


What is the average run time of a Generac generator on propane?
The average run time of a Generac generator on propane depends on the size of the tank and the wattage being used. A typical 20-pound propane tank can power a 10,000-watt generator for approximately 10 hours.

What size propane tank is needed to run a Generac generator?
The size of the propane tank needed to run a Generac generator depends on the wattage being used. A 10,000-watt generator would require at least a 20-pound propane tank.

Can a Generac generator be converted to run on natural gas instead of propane?
Yes, many Generac generators can be converted to run on natural gas with the use of a conversion kit. However, it’s important to note that natural gas may not be as readily available in all areas as propane.

How often should the propane tank be refilled when running a Generac generator?
The frequency of propane tank refills depends on the size of the tank and the amount of wattage being used. As a general rule, a 20-pound propane tank can power a 10,000-watt generator for approximately 10 hours before needing to be refilled. It’s important to regularly check the propane tank level and refill as needed to avoid interruption of power.