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Invertor vs Gasoline Generator: What’s the Difference?

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Buying a generator is not that easy anymore. You have to pick between different types of generators. One of the considerations when buying the generator is whether to buy an inverter or a gasoline generator.

In this blog post, you will learn how to pick the right generator for your home. The tips mentioned in this blog post will help you select a generator that best meets your requirements.

Difference between Inverter Generators and Gasoline Generators

Inverter generators are smaller and quieter than gasoline generators. These generators produce DC power that is converted to AC power that is used by home appliances.

Unlike gasoline generators, inverter generators produce clean power with no fluctuation. The conversion of DC to AC power eliminates noise.

Inverter generators can produce electricity at different frequencies and voltages. Generally, inverter generators convert 12V DC power to 120V AC power which is in use by most appliances.

Noise Levels

Inverter generators are quieter than gasoline generators. The noise level of the inverter generator is similar to a human conversation. This makes the generator suitable for use outdoors.

Fuel Efficiency

Inverter generators adjust the engine speed based on the output requirement. This results in more fuel efficiency and lower efficiencies.

Gasoline generators typically operate at 3600 RPM with 60 Hz per cycle. The inverter generator runs at a lower RPM maintaining the right frequency for the load. This efficient operation results in lower fuel costs as compared to an inverter generator.

Inverter generators start with lower electricity. The consumption increases over time as more power is required. The engine increases speed depending on the demand and uses as much fuel as necessary.


Inverter generator has the advantage that it is highly portable. The light weight of the generator makes it easy to carry around. You can take the inverter generator with you for a camping or fishing trip. The generator can also be used to power RVs. 

Power Output

Inverter generators produce reliable power similar to the line power of the UPS. The clean power output makes it suitable for sensitive electronic devices like chargers, laptops, HDTVs, gaming consoles, and portable AC units.

Gasoline generators don’t produce clean power. They are more suitable for large electric components such as HVAC units.

Remember that a multi-phase alternator gasoline generator is as efficient as an inverter generator. But these generators are much more expensive which is beyond the range of most homeowners.


Gasoline generators are much cheaper as compared to inverter generators. The cost of an inverter generator is two to three times that of a gasoline generator.

But the cost of operating an inverter generator is typically lower. This means you can recover initial investment quickly with an inverter generator.

Run Time

The run time of inverter generators is generally higher than gasoline generators. The inverter generators run with about 40 percent more fuel efficient than gasoline generators. The run time of inverter generators is about 10 hours which is enough for most people. The generator can run even longer but the shorter fuel capacity limits the run time.

Which is Better: An inverter or a Gasoline Generator?

An inverter generator is a better option if the main consideration in buying a generator includes noise levels, power quality, and portability. In contrast, gasoline generators are better if you want to power large appliances.

You should not base your decision on price alone. The higher initial cost of the inverter generator can be recovered more quickly due to the lower cost of operations.

Generac Superstore is a reputable dealer of branded Generac generators. We offer sales, repairs, and maintenance