Does Generac Run On Propane?

Generac’s corporate standby generators can be powered by a propane fuel tank, just like at home. Fuel tanks have a run time of up to 168 hours before they need to be replaced.

How long will a propane-fueled Generac generator run?

Just like a car, if the generator is in good working order, it should run for as long as the fuel supply lasts. That is, the amount of diesel or gas you can feed it determines the amount of time it can operate.

You may be able to provide your Generac with fuel indefinitely if you have a gas generator and receive natural gas through mains pipes to your home. The fuel that your generator uses is constantly replenished by gas from the mains, so it may be able to run for weeks at a time if there are no mechanical issues.

Running times are not indefinite if your Generac uses liquid propane stored in a tank, but they are still significant. Most conventional tanks hold between 250 and 1,000 gallons. Typical household use consumes about 2 to 3 liters of propane per hour. So a 1,000-gallon tank will last you around two weeks during a power outage.

Home generator diesel tanks come in a number of sizes. Sub-base tanks typically hold less than 1,000 gallons of fuel, whereas subterranean storage tanks can hold up to 1,000 gallons of fuel. Above-ground tanks are also available, albeit they normally require planning clearance and do not have the same capacity.

A 10 kW generator running at half power will use about 0.35 gallon of diesel per hour, meaning that a 1,000 gallon tank will last about 17 weeks.

Generac generators run on what kind of fuel?

Your home is automatically protected by a Generac home backup generator that is permanently installed. It’s powered by natural gas or liquid propane (LP) and sits outside like a central air conditioner.

How long can a generator run on a 20-pound propane tank?

A 20-pound propane tank will last roughly five hours when used to power a generator. This size propane tank can typically hold 4.6 gallons of propane. As a result, the working times may vary depending on the overall weight of your propane cargo.

What is the cost of running a Generac generator on propane?

It’s vital to keep in mind that the cost of running a generator varies depending on the power demand, and many modern generators have low-fuel or half-load modes. The estimated expenses of running your generator could be reduced or increased depending on these variables.

Gasoline Generator

Portable generators are most commonly powered by gasoline. A typical 5-kilowatt generator uses roughly 0.75 gallon of gasoline every hour. In July 2018, the average price of gasoline in the United States was $2.89 a gallon. If you used the portable generator for a day, it would use roughly 18 gallons of gas, which would cost around $52 per day to run. Because gas prices change, running these types of portable generators for an extended period of time can be costly.


Portable diesel generators are less prevalent, although their fuel costs fluctuate like gasoline’s. Diesel costs roughly $3.17 per gallon on average. When running at full capacity, a 20-kilowatt generator will consume around 1.6 gallons of gasoline every hour. As a rough estimate, the cost of running the generator for a day would be $122.

Propane Generator

In the portable generator market, propane generators are frequently the cleaner energy alternative. Propane, on the other hand, burns more fast in a generator. A 20-kilowatt generator would consume around 3.45 gallons of gasoline each hour. As of March 2018, the average price per gallon for propane in the United States was roughly $2.50. A portable generator would use roughly 83 gallons of gas and cost over $200 to run for 24 hours.

Some standby home generators use propane, which is stored in big tanks on-site, which helps to reduce expenses by requiring fuel to be purchased in bulk less frequently. Under full load, a 22-kilowatt generator for the residence will burn around 3.6 gallons per hour. The standby generator costs the same as the portable version to run, a little more than $200 each day.

Natural Gas Generator

Because many homes are already supplied with natural gas, natural gas is quickly becoming the preferred fuel for residential standby generators. Natural gas costs $3.25 per thousand cubic feet in the United States right now. Because a 7-kilowatt generator uses around 118 cubic feet per hour, the cost of operation is only $0.82. Operating costs for a larger 15-kilowatt unit rise to $1.71 per hour, utilizing 245 cubic feet of natural gas.

This indicates that running a generator for the 10-minute “workout period” once a week would cost roughly $4 to $5 each month. And, depending on the energy load, the generator will spend roughly $20 to $40 every day during a power outage.

For a whole-house generator, how big of a propane tank do I need?

For a whole house generator, it’s best to have a tank that stores between 100 and 500 gallons of propane. A 100-gallon propane tank will last around 1-2 days, whereas a 500-gallon tank will last about 7-10 days. Connect numerous portable propane cylinders with a switchover valve to get more use out of them.

Before deciding on the size propane tank you’ll need for a whole-house generator, think about the following factors:

How much does a Generac whole-house generator set you back?

A whole-house Generac generator can cost anywhere from $12,000 to $15,000 to purchase and install. Although Home Depot and Lowes have financing alternatives for generator installation, interest can increase the total cost.

How long will a generator run on 100 gallons of propane?

Thunderstorms, ice storms, hurricanes, or any other type of weather are no problem when you have a backup emergency power generator. A propane-fueled generator runs quickly and dependably, providing all of the comforts of home regardless of the weather.

Why Run A Generator on Propane?

Generators spend the majority of their time not running due to their standby nature. Diesel fuel and gasoline can gum up and jam the interior parts of the engine after sitting for up to 6 months. These fuels can harm rubber seals and gasoline lines over time. Furthermore, in cold weather, diesel and gasoline can be difficult to start. Propane is a clean-burning fuel that has an unlimited shelf life, lowers engine wear, and may be used for various household appliances.

How Long Will I have Power with Propane?

Home backup generators typically range in capacity from 7 to 20 kilowatts (kW). Only the key systems in a home can be powered by a 7 kW generator. Heating systems, a well pump, a sump pump, refrigerators, and some lighting are among them. To enjoy their home as they would with conventional electricity, a homeowner would need to upgrade to at least a 15 kW system.

On a 100 gallon tank at full load, a 7kW generator will run for 66 hours and a 12kW generator for 36 hours. The generator is usually running at 25-75 percent capacity, which means the fuel supply will last much longer. Eastern recommends that customers installing a home backup generator have enough propane storage for 5 days of generator run time, based on our experience with previous storms and other crises.

How long would 500 gallons of propane keep you going?

The 500-gallon propane tank is the most frequent of all the residential propane tank sizes. When the cold weather arrives, you should at least know how long a 500-gallon gas tank will keep a house warm.

Here’s how it works:

A 500-gallon propane tank can last anywhere from one month to fourteen months and four days. Check the chart and graph for different sizes of homes further down for accurate times.

During the winter, the average US household uses roughly 750 gallons of propane. That means the average US household will require two 500-gallon propane tank fills per winter (500-gallon tank holds a maximum of 400 gallons of propane; the 80 percent safety rule).

We’ll take a deeper look at a 500-gallon tank’s lifespan. This will allow us to more precisely determine how long 500 gallons of propane will last in homes varying in size from 500 to 4,000 square feet.

To determine how long a 500-gallon propane tank will last in your home, we must consider the following factors:

  • Your home’s size. Larger dwellings demand more heating, and a 500-gallon propane tank will run out sooner than a smaller tank.
  • criteria for heating (location). Houses in the north of the United States demand more BTU heating than houses in the south. For instance, in Texas, a 500-gallon propane tank will last longer than in Chicago.
  • What is the severity of the winter? We will burn more propane in hard winters than in mild winters. According to the data for average US home winter use from 2010 to 2016, the 2013-2014 winter was the hardest, with an average usage of 830 gallons of propane compared to 750 gallons on a typical winter.
  • Your propane-powered heating units’ energy efficiency. For example, high-efficiency propane furnaces with an AFUE rating of greater than 90 will use less propane to produce the same amount of heat than furnaces with an AFUE rating of less than 70. A 500-gallon propane tank will last longer as a result.
  • The maximum propane tank capacity is set at 80%.

Is it cheaper to use propane or gas to power a generator?

Propane generators are inefficient, producing less BTUs per gallon of fuel than gas generators. Propane, on the other hand, burns cleaner than gasoline, making it better for the environment as well as your generator.

What is the maximum time a Generac generator can run?

If your generator operates on propane or gas, make sure you have enough fuel on hand to keep it going for as long as you need it. Even the most powerful and dependable generator won’t be able to aid you if you run out of gasoline. There are tanks available for 24, 48, and 72 hours.

You’ll also want to keep an eye on the generator’s oil use to ensure it doesn’t run out. If you’re going to be using your generator for a long time, it’s a good idea to turn it off every 24 hours, let it cool down, and replenish oil if needed.