There are a lot of different factors to consider when shopping for a generator. Fuel consumption is one of the first and foremost. You want to feel confident that your generator will continue to operate during an extended power outage in your area. Understanding the different types of fuel, generator capacities and how long your Generac generator will continue to run on a single fuel supply will help you choose the right model for your home.
Different Types of Fuel
In the past, generators relied heavily on diesel fuel. However, there are now cleaner alternatives that are safer for the environment and easier to store. Today’s modern generators use propane and natural gas to provide continuous service. These models cleanly burn fuel and can be connected to the home’s natural gas lines or larger propane tanks for a constant supply of fuel.
Generac Generator Fuel Consumption Rates
How much fuel is consumed and how quickly depends both on the size of the generator and the amount of load it is supporting. Fortunately, a Generac specialist will be able to recommend the right size generator based on the square footage of your home, whether you want to power the entire home or only certain systems or appliances and the approximate amount of time you expect to be running your generator.
Just as an example, a 22 KW Generac generator will burn through 9.7 cubic meters of natural gas when operating at full load. If it is directly hooked up to your natural gas lines, you will be able to keep your home up and running for an indefinite period of time.
As for another example, again depending on what you are powering and the size of your generator (let’s say 20kw in this example), a propane generator may use around 2-3 gallons/hour. So, if you have a 500-gallon tank, which can only be filled to 400 gallons, then a full tank would last you around 6 to 7 days. Again, these are all rough estimates and a true estimate of generator fuel consumption rates would need to be given by a Generac specialist after they take into consideration what you plan to power and the type of fuel you plan to use.
If you would like additional information about Generac generator fuel consumption rates and expert advice on which models are best for your home and your needs, contact the team atAlternative Power. Our highly trained and experienced technicians can answer all your questions on Generac fuel consumption.
FAQs
You may be able to provide your Generac with fuel indefinitely if you have a gas generator and receive natural gas through the main pipes to your home. The fuel that your generator uses is constantly replenished by gas from the main lines, so the unit may be able to run for weeks at a time.
How long can a Generac generator run continuously on natural gas? ›
You may be able to provide your Generac with fuel indefinitely if you have a gas generator and receive natural gas through the main pipes to your home. The fuel that your generator uses is constantly replenished by gas from the main lines, so the unit may be able to run for weeks at a time.
How long will a Generac 6500 run on a tank of gas? ›
Large-capacity steel fuel tank with incorporated fuel gauge provides durability and up to a 16.5 hour run-time at 25% load (11.5 hour run-time at 50% load).
How long will a generator run full of gas? ›
Gasoline-powered portable generators can run continuously for about six to 16 hours at a time. Well-managed propane portable generators can run for about 150 to 200 hours at a time (about up to eight days).
How long will a Generac generator run on 1000 gallons of propane? ›
However, in general, a Generac generator will burn through around 2 to 3 gallons of propane an hour. So if you have a 1,000-gallon tank, you can expect your generator to run for around two weeks during an outage. Of course, this is just a general estimate, and your mileage may vary.
Can a Generac generator run 24 hours a day? ›
Generac generators can run continuously in an outage for a maximum of 7 days, depending on the size of the fuel tank and power load.
Can you run a generator 24 hours a day? ›
While some generator models can run anywhere from eight to 12 hours, or even for multiple days, generators should never be left to run for weeks or months at a time. Essentially, this comes down to generators' engine construction, which requires not just fuel, but regular lubrication and routine maintenance.
How many gallons of propane does a Generac generator use in 24 hours? ›
On average, a common household-sized generator consumes 2 to 4 gallons of propane per hour. Propane consumption also largely depends on the generator's output capacity and the extent of its utilization during the outage. Consulting with a Generac specialist is recommended for more precise estimations.
How many hours can a generator run on 5 gallons of gas? ›
A 5500 watt generator needs an engine with a capacity of greater than 7.3 HP. I'll use 10 HP. 10HP at full load uses ~5 pounds of fuel per hour, ~0.83 gallons. At full load, you would use your five gallons of fuel in about 6 hours.
How long will a Generac generator run on full tank? ›
If natural gas isn't an option, you can install a liquid propane standby generator. Expect it to burn through about two to three gallons of fuel per hour. With tanks ranging from 250 to 1,000 gallons, you can run your generator anywhere from three to 20 days straight, depending on your usage.
If no appliances are running, shut the generator off. If you are just running a few lights, using other sources may cost less than running the generator. Do not leave a running generator unattended; turn it off at night and when away from home.
Can neighbors complain about the noise from a generator? ›
Communities and local authorities are increasingly taking action to address generator noise complaints. This may involve creating regulations and guidelines for the use of generators in specific areas, enforcing noise ordinances, and educating the public on the importance of minimizing noise pollution.
How much gas does a generator use in 8 hours? ›
For example, a 2000-watt portable generator can operate for approximately 6-8 hours on a gallon of gas, while a 5000-watt standby generator may consume close to one gallon per hour.
Is it cheaper to run a generator on propane or gasoline? ›
While gas-powered generators may be more cost-effective up front, propane-powered generators can save you money in the long run. You probably won't be using your generator every day, which means you'll be storing it for the majority of the time. When it comes to shelf life, propane is a far superior fuel supply.
What is the life expectancy of a Generac generator? ›
A Generac whole house generator typically lasts for around 25 to 30 years or 3,000 hours of use. The lifespan of Generac whole-house generators can vary based on the quality of installation and maintenance that the system receives. The generator's size, fuel type, and tank size can also impact longevity.
Is a 22Kw generator big enough for a house? ›
It automatically powers all your essentials (i.e., your whole house) in an emergency. A Generac 22Kw whole house generator can meet a 3,000 to 4,000-square-foot house's “basic” needs.
Do Generac generators use a lot of natural gas? ›
Using our previously mentioned Generac Home Generator sizes, a 22 KW Generac generator would consume 5.9 cubic meters per hour of natural gas at ½ load and 9.7 cubic meters per hour at full load.
Can a whole house generator run for days? ›
Most generators can run continuously for about 500 hours. It is not advised to let the run time go longer than is needed. In times of need, it is crucial to know how long your generator will keep the lights on, too. The answer to this question largely depends on what type of generator you have and your fuel supply.
How much does it cost to run a Generac generator on natural gas? ›
Generator Fuel
The cost of natural gas use varies by state. If you're running a 22 kW Generac generator at 100% power output for a full 24 hours, you can expect to spend about $100 on natural gas. The same usage would cost about $200 per day if you're using propane.
What is the life expectancy of a Generac whole house generator? ›
A Generac whole house generator typically lasts for around 25 to 30 years or 3,000 hours of use. The lifespan of Generac whole-house generators can vary based on the quality of installation and maintenance that the system receives. The generator's size, fuel type, and tank size can also impact longevity.
