Shutting Out Generator Buzzing Noise Using Generator Soundproof Box

If you have ever went camping in a remote area, experience a sudden power outage due to some local natural disaster or stay in an area where power supply isn’t regular to say the least, owning a generator could be such a relieving pleasure.

Sometimes, the main thing you need is light to see around, see what’s lurking in the corners or keep yourself away from dark haunting thoughts and memories of a horror movie you saw in the most recent past but a generator offers even more as you get a chance to make use of necessary electrical appliances such as torch, chargers just to name a few.

Indeed, in a survival scenario - think apocalypse - only a few pieces of machinery offer more value than what a generator offers. In a generation where we have increasingly become dependent on electricity for survival, the ability to generate power - via a generator set - when there is power outage could feel like the difference between life and death.

That said, what electrical appliances could be used when a generator is used depends largely on the power output of the generator. With cell phones, tablets, GPS, laptops and rechargeable torches increasingly a part of our everyday life, access to power is more often a necessity than luxury.

There is no gainsaying stating that there are countless needs for a generator if power outage has become a regular phenomenon rather than a once in a red moon happening in your locale. A generator with a high power rating could power your deep freezer and prevent your food from spoiling when the freezer thaws out while some others can do as much as power your split air conditioning units or even power a small estate. Never knew?

Despite an established long list of value and benefits generators presents to its users, it has just one major drawback – it is annoyingly noise and an array of them in a neighborhood could cause some real headache.

Some are even noisier than others but regardless of what category they belong to, they all produce a vigorous buzz and vibration that can be pretty much disturbing and annoying if we choose to ignore the fact that other than that it attracts unwanted attention from roaming thieves.

Not only does this affect you as a user of a set but your neighbors too. You can save them the stress by going all out to get a quieter generator set, however this might be a little heavy on you if you are working on a tight budget.

Fortunately, there are other ways by which you can greatly suppress the noise made by your generator set, one of which is using a soundproof generator box.

Not all generators are manufactured with the same specifications with the specifications differing over a wide range of size, power, voltage, noise levels etc. While some are quieter models, others are beastly as regards the noise they make either due to their build or due to generally poor maintenance, servicing and handling.

The quieter generator sets run at about 50dB delivering between 1600 and 2000 watts. However, if you already own a noisy one, your first call wouldn’t be to dispose it off but rather to find a way to reduce the noise level and this is what this article aims to shed more light on.

Still, it is highly important that you know what causes the noise in generators so as to equip you with the best ideas on how to tackle that lingering noise problem.

Why Generators Are So Noisy

It might suffice to say that a lot of technicalities come into play when discussing generator sets and why they make such disturbing noise, however these terms are quite easy to understand and would be unravelled here.

There are two main factors affecting a generator noise levels namely generator technology and power output.

Generator Technology

Some generators make less noise than some others and this is mostly down to a difference in generator technology. Generator sets with lesser noise produced often use inverter technology.

Simply put, these modern generator sets use specialized magnets and advanced electronics to produce needed power.

They are more silent than traditional generators and supply a steady flow of power with better fuel efficiency in fact. They also tend to be better efficient, more reliable and more compact than those of other types. There’s no limit to what improvement in technology can allow you achieve really.

As a result of the changes in design of modern generators, mufflers along with other noise suppressing features are built into the new design.

However, one demerit of these inverter generators is that they do not reach the same level of power output that those of the larger conventional generators peak at.

The design of the generator is also very important and some brands are known to have a better design and overall build - that makes them produce decent power yet without a lot of noise - than some others.

Power Output

Putting things in perspective, the greater the power output of a generator, the more the noise it generally would produce.

As discussed earlier, soundproofing elements and technology such as those present in inverter generators would help but in general a more powerful generator would in most cases be louder than a low power option.

Crude Ways of Reducing Generator Noise

There are a lot of ways you to reduce the noise coming from your generator set, some more effective than others. However, it is still important to see crude or local ways by which noise from your generators could be reduced if not eliminated. Some can be used in isolation while some are combined for best results.

Positioning the Exhaust Pipes in Vertical Position

Generally, traditional generators are known to have horizontal exhaust pipes and consequently direct its exhaust into your nostrils. The simple procedure of changing the pipes to a more vertical position direct sound waves into the air rather than directly at you or those around you.

It’s also fair to mention that a bit of noise is still bound to travel horizontally but would be greatly reduced to a bearable amount if this simple process is observed.

At the very least, you can choose to point the exhaust away from you if you choose not to point the exhaust upwards.

Exhaust Muffler Upgrade

The motor of a generator which forms a key part of its working mechanism generates a lot of noise which is expelled from the exhaust. The purpose of a muffler on an exhaust is similar to what a silencer does with a gun – reduce the noise coming out.

If you ever come across a car, motorcycle or moving engine with a missing or faulty muffler, you can relate with how much noise it produces. While there is little to nothing you can do about the noise generated by the motor itself, installing a bigger and possibly better muffler can reduce the generator noise by large amounts.

Not only does a good muffler lower the noise level of the generator, it also lowers the pitch of the noise which is usually less annoying and disturbing compared to a higher pitched whine.

It is also important to know that you could use a motorcycle or car muffler and it would work just fine.

Water Trick

Another known way of soundproofing a generator popularly adopted in rural areas and third world countries is using what is referred to as the water trick. In this process, a hose or flexible pipe is attached to the exhaust pipe and fed into a large bucket of water.

This simple trick is pretty much effective at reducing the noise from the exhaust of the generator set. It might suffice to mention at this point that a cut small hole on the hose fairly high on the hose will ensure that no water gets into the generator.

Make Use of a Sound Deflector

While this may not totally shut the noise out, it will cause some disruption to the sound waves and help divert some of the noise away from you.

Use some material such as wood, zinc to form an enclosing barrier about the generator and between yourself and the generator to deflect some of the sound.

While you might not find this method as effective as other methods listed in this category, it is quick to set up, do not necessarily require expensive resources and would easily reduce the produced noise by about 10dB.

Use of Vibration Dampening Material

Most of the noise produced by a generator is largely due to vibrations either by some of loosened parts or between the generator set and the surface on which it stands. This noise can be easily suppressed by tackling these vibrations. To do this, you can add a vibration dampening material to the engine housing. Taking a look at the generator engine, the screws that secure the engine to the frame are easily noticeable with rubber washers between the screw and the frame.

Adding a second rubber washer could reduce the noise. Nonetheless, you might have to replace the bolts with longer bolts in order to make room for an additional washer, but the noise reduction should turn out to be worth the stress.

Padding Placement Beneath a Generator

You could reduce the noise from your small generator set by placing a rubber waffle padding. This padding will help reduce vibration between the generator and whatsoever surface on which it is placed making for a quick and less expensive way of reducing generator noise.

Soundproof Generators

Rather than employ these crude methods which do not necessarily shut out all the produced noise, you could leverage on advancing technology by getting a generator with much less noise than the traditional generator. Most manufacturers are looking to make generators increasingly quiet than they used to be and here are some great options if you have an intention of getting a quiet generator.

1. Champion Power Equipment 3,100W

Champion Power Equipment 3,100W

Just as the name reads, the Champion Power Equipment 3100W can produce up to an impressive 3,100 Watts of power whilst releasing a decibel level of 58dbA at 23 feet, which is considerably lower than an average human conversation put at about 60dBA. Things can’t get quieter than that really.

This beastly generator is relatively lightweight, weighing less than 100 pounds, runs off a single 171cc 4-stroke OHV engine and has the capacity to run for 8 hours on a single tank of gasoline at twenty-five percent usage.


  • It produces ‘clean’ electrical power that could power even your most sensitive electrical appliances.
  • It is very affordable.
  • It has smart economy mode which contributes to its high fuel efficiency.
  • It comes with a 3 year limited warranty.


  • It cannot run heavy duty electrical appliances and are as a result only suitable for commercial purposes.

2. Yamaha EF2000iS 2,000W

Yamaha EF2000iS 2,000W

The Yamaha EF2000iS 2000W is a little noisier (61 dBA) than the Honda EU20001 – which runs at the same power – if you’re are running it at full power. However, where this generator stands out is when it run at 25% power. At this 25% rating, the Yamaha EF2000iS 2000W has an almost whisper-quiet sound of 51.5 dBA, some decibels short of the average human conversation.

By other measurements, it is very similar to the Honda with roughly the same size and power output.

In summary, Yamaha EF2000iS with a fuel tank capacity of 1.1 gallons, a DC electrical output of 120V, 16.7A and a DC electrical output 12V, 8A has a recoil starter, an auto shutoff for low oil level, powered by unleaded gasoline and has only a weight of 44.1 pounds.


  • It has an economy switch mode that only enough power is produced and not excess power leading to high fuel efficiency.
  • It is a safe, clean and reliable source of electrical power.
  • It is a light weight generator at 44 pounds.
  • It expands connectivity of your appliances to electricity generators, this is owing to its twin tech capability that lets you combine it with another model.


  • It is relatively expensive.
  • It doesn’t support heavy duty electrical appliances.
  • On purchase, the oil is not included.

3. Honda EU2000i 2,000W

Honda EU2000i 2,000W

With a power rating of 2,000W, the Honda EU 2000i 2000W is a little less powerful than the Champion Power Equipment 3,100W but very comparable to Yamaha EF2000iS. It is quieter than the Champion Power Equipment releasing 59 dBA of sound when running at full power and you are standing only millimeters away from it.

It is also incredibly portable, weighing half as much as the Champion Power Equipment as is a good option if maximum power isn’t priority.


  • Because of its eco-throttle system, it is fuel efficient.
  • It is quiet and very portable.
  • It possesses a parallel capability that lets you set up your electrical power using another generator of the same make and model.


  • It has no electrical start button.
  • It is expensive.
  • It has no fuel gauge therefore knowing how much fuel is left could pose a serious challenge.
  • It is unsuitable for heavy electrical appliances.

4. Briggs and Stratton P3000 3,000W

Briggs and Stratton P3000 3,000W

Another powerful option with comparable power output rating as the Champion Power Equipment 3,100W, the Briggs and Stratton P3000 3,000W can offer a great deal of power whilst still rated at an incredible 59 dBA. The high power output could power a lot of electrical appliances in your home and 1.5 gallons of gasoline is estimated to last you for about 10 hours if you run the generator at 25% power.

It is important to note that none of these generators deliver same level of power as a full-sized emergency generator but is an excellent option to consider if purchasing a quiet generator is top priority.

A bonus to it being relatively noiseless, they are also more fuel efficient and overall are more portable both of which could be quite advantageous in more circumstances.

5. WEN 56200I Super Quiet Generator

WEN 56200I Super Quiet Generator

Another portable generator you could consider buying for your camping and other open field activities is the WEN 56200I super quiet generator. Boasting a 4 stroke OHV 79.7cc engine, this super quiet generator produces 2kW when starting and 1600 Watts when running. At 100% load, it runs on 1 gallon of gasoline for 4 hours, and 6 hours at 50% load. This is a very magnificent timeframe, a long shot by other generators of same size, given the amount of electrical power that they produce comfortably, steadily and efficiently.

With only 51 decibels of sound produced at 25% load and 55dBa at 75% load, WEN 56200I Super Quiet generator is definitely one of the best quiet portable generators.

With this tucked somewhere in your backyard, you could be sure to alleviate yourself and neighbours the noise traditional generators are known to give off while simultaneously providing you with electricity to power some of your most essential electrical appliances.

This generator also has an economy mode which works by adjusting its power so that only the required electrical power is produced.. This mode enhances fuel economy thus saving you some expensive running cost. Whatever the case may be, the economy mode only works when you subject this otherwise portable generator, to below 1kW workload. In case you make use of only 500 watts electrical appliances, the economy mode will come in handy! This generator is best for light duty electrical usage, such as powering your electrical bulbs and small appliances running for half the night after a major power outage.

Having listed all these generators, purchasing a new generator set might not be on the list of cards for you if you are on a tight budget. For an old generator already causing a nuisance, making use of a soundproof box might be your best bet. There are a lot of soundproof generator box for sale on online markets like Amazon but you might as well opt to build yours yourself.

To ensure that you would be needing the following items:

A Medium Density Fiberboard (MDF), Foam mats, Green glue, Mass Loaded Vinyl (MLV), ventilation duct, measuring tape, a saw, Acoustic caulk, screws and nails, hammer and screwdriver, some paper and pencil and a right angle triangle.

Let’s take you through building a complex phenomenon in only eight basic steps.

Take Measurement

Generators come in different sizes meaning not all generator boxes are of same size. As a result, the first step in building a soundproof generator box is measuring the generator itself. Care must be taken to measure the generator very well as this lays the foundation for all other things you shall be doing.

Once you have taken all measurements, you should write them down and leave out a few inches on the sides to allow spaced for insulation thickness and vents.

Having taken down all measurements and recording on a booklet, we can now begin work on our soundproof generator box.

Cut out the Box

With your measurements cleanly recorded away, prepare your medium density fiberboard and get ready for cutting. There is no strict rule as regarding using a medium density fiberboard as you could also make use of a regular plywood or pretty much anything but a medium density fiberboard sure helps.

Medium Density Fiberboard

Take a look at some recommended fiberboards for your convenience and best results.

At this point, your pencil and right angle ruler should come into play. Use them to label the measurements and the fiberboard and proceed to cut if you are now certain that everything is done right up until this point.

Use your table or circular and pay careful attention to the measurements and labels you have previously made on the fiberboard.

Take a look at some recommended fiberboards for your convenience and best results.

At this point, your pencil and right angle ruler should come into play. Use them to label the measurements and the fiberboard and proceed to cut if you are now certain that everything is done right up until this point.

Use your table or circular and pay careful attention to the measurements and labels you have previously made on the fiberboard.

Set Some Ventilation Holes on Your Box

If all is set and you have a ventilation duct in your hand, let’s fetch you some ventilation holes for your soundproof generator box.

Measure the diameter of the ventilation duct. Now mark some circles on the fiberboard in the following order:

The first circle should be placed on the top piece of fiberboard. Note that keeping it a bit to one side rather than at the center of the board would give a better result than otherwise.

The second circle should be laced on a board that will be used as a wall and that will be placed on the opposite side from the top hole.

With everything marked according to these given instructions, lay your fiberboard walls on the table being careful to place the ceiling one in the center, with the rest surrounding it.

Including a Mass Loaded Vinyl Insulation

This should be added as your first layer in the generator box. Measure the generator soundproof box and cut the mass loaded vinyl accordingly, gluing it down into the inside of your soundboards.

TMS Mass Loaded Vinyl

Caulking the First Layer

With the mass loaded vinyl insulation put in place, it is now time to caulk the first layer. Caulking is important for sealing the edges which could be a little difficult to glue down properly.

Green Glue Noiseproofing Compound

For the purpose of this discussion, a  green glue will be used because added to its ability to glue down these edges, it is also acoustic, that is, is a very useful item for soundproofing.

Glue the Foam Mat

You would also need to lay layers of foam mat to the walls and ceilings of your soundproof box. They do not allow sound to bounce off the walls and ceilings of your built soundproof generator box because of their usually soft nature.

Stalwart Foam Mat Floor Tiles

Cut them according to measurements and glue them directly to the vinyl layer and repeat the same caulking process with the aid of an acoustic caulk like Green glue.

Constructing the Box

Gather all of the pieces and put together your soundproof generator box. Attach the walls and ceiling of the proposed box using nails and screws.

Another thing you will need to install is hinges in order to ensure easy access to generator/

Install the Venting Duct

Installing the venting duct is very important because without that there could be serious cases of overheating which could lead to an unavoidable catastrophe.

While the above tips can help to suppress the noise to an extent, they still can't deal extensively with the noise. The only and most effective way to truly get a noisy generator quiet is the use of a soundproof generator box.

Soundproof Generator Box for Sale

Kada Generator Soundproof Box

Nowadays, the market is saturated with endless number of soundproofing materials and products. Out of these, most of them are of reliable and standard quality, while a few are simply of no relevant use whatsoever.

Hence, for your ease and advantage, we have composed a list of different products which provide the best insulation for soundproofing walls.

With most of them available online, they provide effective sound insulation without burning a hole in your pocket.

Volvo Diesel 200kva Generator Set Silence Box

The Volvo diesel 200kva soundproof generator box for sale on online stores is environmentally friendly and its emission conditions achieve European Union 2 or 3 and EPA environmental standard. This standard selects electronic injection diesel engines prestigious from Sweden Volvo group production.

The Volvo company was founded in 1927. That shining brand also known for manufacturing cars is closely associated with its three core values-quality,safety,environmental protection.Volvo diesel generator set features:cold starting, low fuel consumption, small volume, strong loading capability and long service life.

Shiv SS Low Noise Vibration Free Enclosures

The Enclosures act as sound absorbers and reduce the noise produced by your generator by a huge deal. The low noise acoustic enclosures offered by Shiv Ss are known for following features such as:

They are sound proof enclosures with low noise (70 to 75 DBA)at 1 meters.

They allow sufficient air for engine aspiration and proper heat dissipation as the fans are allowed the space to maintain proper cross flow.

Huaquan Soundproof Box Generator Diesel Generator 30kw

The Huaquan soundproof generator box available for sale on online stores is known to have the following merits:

  • Perfect ventilation design and efficient multi-path intake and exhaust, ensure adequate power performance.
  • Silent canopy: Noise reduction standards in line with ISO3744 and GB2820 standards, significantly reduce the noise to 75db (at three meters of generator).
  • Specialized quickly open plate, scientific observation window and emergency stop button of the unit, easy to observe operating status and easy maintenance.
  • Overall compact structure, small volume, perfect appearance.
  • Large capacity base fuel tank to ensure the unit run continuously for eight hours.


There is no gainsaying that generators come in handy when the power grid is down or a power outage for whatever reason.

However, living with and trying to sleep with the constant noise or having to deal with the noise of that of your neighbor’s could seem like hell on earth. It’s therefore no rocket science why any means or measures employed to reduce this whirring noise or shutting it out completely is quite important and worth whatever price you are paying.

If these measures are employed, you should be nowhere close or any more familiar with the annoying buzz from these generator sets while having your private relaxation time with all the disco lights you can muster and staying free from irritation from the loud noise.

Many of the tips given above would help you achieve this goal quite easily but your best bet would be getting a soundproof box.

Building a generator soundproof box is as simple as described in the steps in this article and would help you reduce the noise and buzz from your generator set as much as possible. However, your best bet would be purchasing a fabricated generator soundproof box.

For best results, I would recommend the Huaquan soundproof box generator which meets several standards including the ISO3744 and GB2820 standards. It is aesthetically brilliant, has an overall compact structure and a large base fuel tank to ensure you can run your generator unit for eight continuous hours.

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