How Much Propane Does a Generator Use?

Complete Information How Much Propane Does a Generator Use

How Much Propane Does a Generator Use: A propane generator is one of the most popular ways to provide power at times of need. Plus, it is safe to use and will be relatively environmentally friendly. The question becomes, though, how propane will you be using? Here’s what you need to know.

How Long Will the Generator Last?

This will depend on a few elements. Here are some of the things you need to take into consideration.  The first thing to factor in is the generator size and how much power it will be providing. The bigger the generator, the more propane will be needed to keep it running.

It’s also important to think about how much power you will require from the generator. For example, you might only want to run the generator for a few hours, to charge up your phone. At other times, you will be intending to provide electricity to the whole house. If you have an inverter generator, the electricity demands will determine the strain placed on the generator. The amount of propane used will increase or decrease accordingly. This article can help you determine how large the generator will need to be to power your house.

It’s also important to consider is the fuel consumption rate. This is the best way of planning how long the power supply will last. This rate should be included as part of the product description.

With these elements in mind, we can start to look at the amount that a generator will typically use. A 20-kilowatt generator will usually consume between two to three gallons of propane each hour. If you have a 500-gallon tank, it will be able to last for a week or more. These types of models will usually power your house after a blackout.

On the other hand, you might be planning on getting a smaller model for camping. Let’s assume you opt for a 7-kilowatt generator, which holds 100 gallons of propane. It will consume around 1.5 gallons an hour. Because of this, you will be able to run it continuously for around 100 hours. Thankfully, running out of propane isn’t a big deal. It is easy to attach a new bottle to the generator, as this video shows.

Extending the Run Time

Of course, there are some ways of extending the run time.  As we mentioned, the amount of power you are drawing will have a significant impact on the amount of propane you are going through. If the propane tank is starting to run low, you might want to start limiting the amount of power that you will be drawing from the generator.

Another common option is to connect multiple propane tanks. When one tank is empty, the gas will be drawn from the next one. With this setup, you will be able to run the propane generator for several hours or days. If you want to run the generator for a long time, it’s best to connect it to the gas line of your house. In this case, it will be able to run for weeks.

How Long Can You Run the Generator Continuously For?

Just because you can run the generator for weeks at a time doesn’t always mean that it’s a good idea. The heat can build up inside the generator. This can start to take its toll on the engine and might limit its long-term lifespan. The bigger problem, though, is the oil. When the oil starts to run low, you will need to stop and refill the tank.

Most whole-house generators can be run continuously for two to three weeks before you start to experience problems. Camping generators might be able to run for several hours. The owner’s manual should give you more precise figures. Many generators will have a way of warning you when the oil is starting to get low. When you do need to refill the oil, it’s best to leave the generator off for a few minutes. Give it some time to cool down before you open the cap.

A good way to get around these problems is turning off the generator at night when you don’t need to run the appliances. This will also save propane gas, so it will be able to last for longer. It’s also important to make sure that you are doing regular maintenance.

Why Use a Propane Generator?

Hopefully, you now have a better idea of the long run time of a propane generator. But this isn’t the only reason why you might want to consider using a propane generator. Many people are attracted to them because of the benefits of using propane. Unlike petrol, which deteriorates fairly quickly, propane will be able to last for a long time. There is no need to add any stabilizers or any other chemicals.

Plus, it will be a relatively safe substance. Though it will be flammable if the gas is allowed to disperse it won’t pose any real threat. It’s unlikely that it will do any damage to the environment. Even better, propane is abundant, so it will be easy for you to refill a tank.

Lastly, propane generators are easy to maintain. Unlike petrol and diesel, propane won’t leave any deposits in the engine, which you will need to clean out later.

If it sounds like you can benefit from a propane generator, there are plenty that you can choose from. You can find smaller models, which are compact enough for a camping trip. But you can also get one that will be suitable for a standby generator, providing enough electricity to power your house. There is no need to spend a ton of money, as there are plenty of affordable options to explore. To see what choices are available, and how they stack up, check out guide to economical whole-house generators.


Propane generators have been built to run for a long time. Many of them will be able to run continuously for several hours or days. If you have a whole-house standby generator, it will be able to run for weeks. When compared with other generators, like petrol, propane models will last significantly longer.

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