10 Best Quiet Generator [UPDATED 2024] Definitive Review

What are the different types of quiet generators?

Generators provide a means to get the topside of frequent power outages or to keep your gadgets juiced up at the campsite.

But they sometimes aren’t the quietest of machines.

Point to be noted: there are no set standards to measure the acceptable noise level of generators.

Now, quiet generators can come in various types. So let’s look at some common ones.

• Portable generators come with an internal combustion engine that’s mostly powered by gas or diesel. Naturally, the best part is you can carry them around anywhere, on and off your property. At the same time, they’re mostly plug-and-play without any need for installation.
• Inverter generators convert AC power to DC and then back to AC. Basically, this is done through the combination of alternator and rectifier. More importantly, the output power has fewer harmonic distortions, making them great for sensitive electronics. The portable inverter generators are not only more efficient but also quieter.
• Standby generators are larger units that automatically take over when the grid power supply fails. They are large capacity generators with special muffler designs. Mostly, they are used in apartments, hospitals, and various commercial establishments. For even larger places, ruggedly designed industrial generators are used.
• Lastly, we come to solar generators that generate power through solar cells. The truth is, they’re the quietest generators of the lot as they come without any engine. The main component is a battery to store the power and the same is delivered through an inverter. However, they don’t give the same power levels as gas-powered generators.

Features to look out for

With a variety of options on the market, things can get confusing for a first-time buyer. That’s why we’ve provided options from a wide price range in our Top Ten List.

So let’s take a look at some important features.

• The first step is to understand how noise level is measured and what values define loudness. Normal breathing is just 10 dB and a soft whisper is around 30dB. Normal conversation is usually around the 60dB mark. Any noise beyond 70dB can be uncomfortable. In case it crosses the 80 dB mark, it can cause hearing damage. Generally, with a higher engine speed the noise level will rise.
• Keep a note of the decibel levels. Most sound levels are measured at a distance of 23 feet (7 meters). As a basic rule of physics, sound levels decrease by 6 dB, every time the distance from the source doubles. Does the decibel levels of a generator tell the entire story of its noise level? Not always. In many cases, the quoted numbers are at a fraction of the power capacity. So, make sure to check the noise levels at full power.
• Check out the features used to control the noise level. Most portable inverter generators have low noise levels. Some brands use special muffler designs to limit the noise. In many cases, the casing is lined with insulation, or anti vibration pads are used.
• The simple truth is, noise levels will depend on power output. Still, even at the same power output, the noise level of two different generator brands can vary. The reason? The engine quality and muffler design. A top-class Yamaha engine will definitely operate at a lower noise level. At the same time, the load placed on the generator will also determine the noise output.

Product and specifications explained

Obviously, there are some details that many buyers may not be familiar with. To make the right choice you need to know the most important ones.

Let’s start with the unit of noise level measurement- the decibel. The higher the decibel (dB) value, the louder the noise level.  The scale starts with 0 dB which indicates total silence. Basically, when the decibel level increases by 10, the sound is 10 times more intense.

Now, engine specifications are an important part of inverter generators and “OHV engine” is a term you’ll come across a lot. It stands for overhead valve engine and these valves are located at the top of the engine combustion chamber. This allows the fuel mixture to enter the chamber more smoothly and results in better combustion. Final outcome – better fuel efficiency and enhanced engine lifespan.

As I already mentioned, the noise levels will vary according to engine power output and load placed on it. In reality, most engines are specified by two power output figures – peak and continuous. The peak or surge power is the highest power a generator can deliver in short bursts. This is useful for running equipment needing high starting watts. The continuous power is the output a generator can supply for longer periods.

These are things to consider

Many first time buyers must be wondering…

What exactly are the points to consider before buying a portable inverter generator? Here, we list the most important ones.

• Basically, inverter generators are electro-mechanical. So, to get the best performance, periodic maintenance is a must. Follow the manufacturer’s instructions to keep yours in tip-top condition.
• Make sure to use the right type of fuel. Also, check the oil levels periodically and refill as needed. Choose portable generators that come with integrated oil gauges.
• Weight is an important consideration for portable generators. At the same time, it’s directly proportional to power output. If you want to use a generator at home as well as for camping, consider picking a product with wheels.
• Safety is one aspect you simply can’t ignore while running generators. Even a quiet generator will need to be operated in an open environment to prevent any chance of carbon monoxide poisoning. Operating in wet environments is also a strict no-no – to prevent electrical hazards.

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Electrical overload breaker – This is a common term related to the safety of portable generators. Any electrical circuit design is based on a specific current flow. If more current flows through it, the wiring can overheat and create a safety risk. A circuit breaker is designed to trip when the current exceeds a certain level. As a result, the power supply is cut off and the circuit stays safe.

Fuel petcock – This is a fuel valve used to control the fuel flow to and from the carburetor. By regulating the valve you can prevent any fuel flow to the engine when the generator isn’t running. This’ll prevent any issues related to stale gas jamming up the carburetor.

Spark arrestor – Bear in mind that even the most fuel efficient engines release unburnt carbon particles through the exhaust. Warning: they’re a major cause of fire hazards. The spark arrestor is a small mechanical device to trap such particles before they come out of the exhaust. Even though their design may vary, the basic function of spark arrestors remains the same.

Pure sine wave output – You already know that an inverter converts DC power into AC. The AC voltage moves up and down like a standard sine wave curve moving smoothly. Due to low harmonic distortions, this output is great for sensitive electronics. But keep in mind, portable generators with a modified sine wave aren’t so good for delicate electronics.