Are Inverter Generators Pure Sine Wave ?

The question to ask is are inverter generators pure sine wave? Yes, inverter generators are often modified as pure sine wave generators. However, this is often a term that is used by the majority of brands as a marketing strategy to get consumers to trust their products.

When the generator is running, it often experiences a slight speed change on the engine hence affecting the sequence of power waves. Therefore, when you are thinking of powering sensitive appliances, it becomes difficult to trust all types of generators on the market.

The type of fuel your generator burns also dictates whether you will get a pure sine wave when the generator is running. A pure sine wave is a powerful wave sequence that keeps your appliances running. Pure sine refers to clean power and is common for running homes.

When generators are working, they often produce power in direct current (DC). An inverter then converts the power into alternating current (AC), which makes it possible to support almost all appliances.

Depending on the type of fuel that the inverter generator is burning, there are those that are certified to run sensitive appliances without any possible complications. Therefore, invert generators don’t always mean pure sine wave.

What Is The Advantage Of A Pure Sine Wave Power Source?

When considering choosing an AC power source, putting waveform in consideration is critical. This gives you the assurance that your appliances will be safe while connected.

Sine wave power source provides you with clean, reliable, and regulated power that is identical or better to the power supplied by a local utility company. Unlike other power sources, the sine wave provides you with a stable power wave and can effectively run all appliances with comfort.

Power source with pure sine wave output makes it possible for you to run your appliances per the manufacturer’s specifications.

Therefore, the pure sine wave has reduced harmonics that help in regulating the motor load and enhances the cooling process while the appliances are running.

There is various equipment that only operates right when connected to a pure sine wave power source.

Some of the benefits you get when you run your appliances on pure sine wave include:

  • Keeps your motors running at the extended speed but with less heat
  • Enhances the durability of your equipment with minimal chances of a mysterious shutdown
  • It means your TV will run with no lines, and the sound system will not have a humming noise
  • Guarantees your sensitive appliances can run smoothly
  • Eliminates all electrical noise in your appliances

Unlike the modified sine wave, the pure sine wave has a smooth transition from positive to negative. This, therefore, guarantees that your appliances with not be exposed to excess power even when there is a power outage. With pure sine wave, you are also guaranteed that your appliances will run within a regulated power range for reliable performance.

What Is The Difference Between Conventional Portable Generators And Inverter Generators?

The conventional portable generators and inverter generators have both mechanical and secondary differences. This means that the two generators have a difference in how they run and how they distribute power. Here are a few notable differences with their advantages and disadvantages on specific tasks.

  1. Noise

Conventional generators are known for making so much noise while they are operating. This is often due to the mechanics. Therefore, even when you try to minimize the noise, they still remain noisy.

On the other hand, inverter generators are designed using advanced technology, making them quieter. They run at a steady speed of 3600rmp, which in return removes the bulk of noise.

Therefore, when you are looking for a generator that will power your appliances, it is also essential for you to put into consideration the noise levels.

If, for instance, you will be operating the generator close to your home or office, the noise levels are critical. You need to ensure that the generator of your choice allows you to focus and concentrate on other activities even when the generator is running.

Most generators, however, in their product description, mention the amount of noise you should expect. The manufactures ensure to mention the noise levels in decibels when the generator is set at different load capacities.

Inverter generators have an approximate noise level of between 52-58dB, while conventional generators produce 6dB or more.


The type of electric power produced by conventional and inverter generators vary. Conventional generators produce only AC electricity, while inverter generators produce electrical power in different phases. It starts by producing high-frequency AC, converts it to DC, then back to stable AC current.

The stable current often reaches the level of the sine wave, which makes it convenient for running sensitive appliances. On the other hand, conventional generators produce an unstable sine wave.

In return, this provides you with unreliable power hence making it unfit for running a particular appliance.

However, even with the different wave frames, the conventional generators still produce exceptional power to ensure that your heavy appliances can operate smoothly.

3. Portability

Fuel-powered conventional generators are designed with a large fuel tank. This makes the generator quite heavier, and its portability is often a challenge. On the other hand, inverter generators are more portable as they are specifically designed for outdoor use.

Another factor that affects the portability of the generators is the amount of power they produce. Generators that are designed for enhanced power production tend to be heavier than those with less power production. Therefore, the portability of larger generators is often a challenge compared to those with smaller power production rates.

On the other hand, generators bigger and heavier are modified with wheels and pulling handles to enhance portability. Therefore, when your adventure requires you to have an extra power source, you can comfortably take a bigger size and be sure of easy mobility.


Are Inverter Generators Pure Sine Wave

Emissions of generators are determined by the type of fuel the generator burns. Different states have restrictions when it comes to using generators in national parks and other nature reserves. The rules are quite tough to ensure that you conserve the environment.

Most states require generators to be EPA compliant, while others go extra and demand CARB compliant.

Inverter generators are designed such that they produce fewer greenhouse emissions, unlike conventional fuel-powered generators. This guarantees that they often meet different state greenhouse emission standards.

Therefore, when you are investing, you are guaranteed that an inverter generator will not get you into possible troubles with the state’s leadership.

The conventional generators, on the other hand, when it comes to emission their size play a significant role. It is quite difficult to find a conventional generator that meets the emission standards for various states.

5.Fuel Efficiency and Power

When it comes to power production, conventional generators are quite reliable than inverter generators. The power produced by a generator is also determined by a b=number of factors from size of the fuel rank, size of the generator, and other mechanical differences.

However, when it comes to fuel efficiency, inverter generators are more fuel-efficient than conventional generators. Their engines adjust as per the load to only use the required amount of fuel to run the appliances presents something the conventional generators cannot do.

Therefore, an inverter generator will use lesser fuel to run for a similar time with a conventional one but with higher fuel consumption. This fuel efficiency has therefore made it possible for manufacturers to develop inverter generators with smaller fuel tanks.

6. Parallel Connection

Another major difference between conventional and inverter generators is the ability to connect parallel generators. Since inverter generators are designed to only produce lower power, when you need extra power output, they allow parallel connection to another inverter generator with similar power production.

This feature guarantees to boost the power of your inverter to support your specific power needs. However, since conventional generators are already powerful, they are not designed to support parallel connection


Price of specific gadgets is often overlooked but it plays a significant role in how you invest and operate your devices. When shopping for generators, it is easy to confuse that those bigger ones should be expensive.

However, that is not all the case as conventional generators are only big and they don’t have any special case like the inverter generators.

Why You Should Choose an Inverter Generator Over Conventional

There are several reasons that may contribute to your decision-making on which generator to choose over the other. If you are looking for a reliable power source and supports the running of a majority of appliances, an inverter generator makes all the difference.

However, if all you are looking for is more power with minimal interest on the type of power, a conventional generator will be enough.

Therefore, before you settle for a particular generator, it is essential that you evaluate your options based on your specifications. This way, it becomes easier for you to focus on the things that you may never see.

Final Thoughts

When looking for a pure sine wave generator, going for an inverter generator may become consistent. Therefore, it is essential for you to understand your priority long before choosing. This will ensure that you not only get a device that will enhance your power demands.

About Steve Stuart

Steve Stuart is an electrical engineer who developed interest on generators during his school years. After school, he became a generator enthusiast. This is after encountering power supply problems at the area of residence where he lived. Power would be on and off and so food would go bad and the room heater would go off especially during winter. After trying the different generator brands for several years, Steve now provides information on the available brands and products in the market today. Based on his experience, he gives the do’s and the don’ts when it comes to generator use.

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