Top 6 Best Quiet 4000-Watt Generators For The Money – 2020 Update

Best Quiet Propane Generators For Home & RV Camping - 2019 Update

There are many things to be operated during a power shortage but in most cases, the noise stops lots of people from choosing the right generator for their need. If yours is somewhere between 3500W and 4000W, let me introduce to you some best quiet 4000-watt generators. Look at the list below:

  • Champion 4000-Watt – Best overall inverter generator
  • Pulsar PG4000iSR – Most portable
  • WEN 56380i – User-friendliest
  • DuroStar DS4000S – Best overall open frame generator
  • Champion 76533 3800-Watt – Best dual fuel
  • Rainier R4400 – Most fuel efficient

Reviews of Top 6 Best Quiet 4000-Watt Generators For The Money

Image Product Details
Best overall inverter generator Champion 100302
  • Lightweight construction, quiet operating, and extended runtime, best choice for home backup, RVs, or tailgating
  • Noise Level (dBA): 64
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Most portable Pulsar PG4000iSR
  • One of the rare inverter generators that come with a perfect compromise of a powerful motor and compact silhouette
  • Noise Level (dBA): 63
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User-friendliest WEN 56380i
  • Ultra quiet & user-friendly, best choise for newbies
  • Noise Level (dBA): 57
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Best overall open frame generator DuroStar DS4000S
  • DuroStar DS4000S is a good selection amongst open frame generators, which surely won’t make you regret
  • Noise Level (dBA): 69
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Best dual fuel Champion 76533
  • Most reliable dual fuel generator you can find in its price range, it's a real workhorse
  • Noise Level (dBA): 68
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Most fuel efficient Rainier R4400
  • Constructed with fuel-efficient technology at an affordable price, it's a good bang for your buck
  • Noise Level (dBA): 65
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Champion 100302 4000-Watt – Best overall inverter generator

488 Reviews
Champion 4000-Watt RV Ready DH Series Open Frame Inverter with Quiet Technology
  • Advanced Open Frame Inverter Design: 50% quieter and 20% lighter than a traditional Champion 3500-watt generator, plus our Economy Mode feature saves fuel and extends engine life
  • Quiet Technology and Extended Run Time: 64 dBA is great for RVs, tailgating, your next project or home backup, with 4000 starting watts and 3500 running watts for up to 17 hours run time on gasoline
  • Clean electricity for sensitive electronics: RV Ready with a 120V 30A RV, plus two 120V 20A household outlets with clean power (less than 3% THD) and 12V DC outlet with dual USB adapter
  • Parallel Ready: Increase your power output by connecting up to two 2800-watt or higher inverter or digital hybrid with the optional Parallel Kit
  • Extend engine life and save fuel, making it a good cost-effective power solution
  • Cause no harm to sensitive electronics
  • Can increase output to fit different power needs

  • Not comfortable handle
  • Costly wheel attachment and a bit awkward to maneuver

I’d like to start this list with Champion 4000-watt, as it gives roughly perfect performance on all aspects of a quiet 4000W inverter generator.

That’s particularly true in terms of dimensions, weight, runtime, noise level, and price (if not saying it’s super-affordable compared to other 4000-watt counterparts).

Like other good generators, it produces only clean power (< 3% THD), so no risk for vulnerable electronics. Moreover, it meets all safety requirements, from USDA Forestry Service approved spark arrestor to EPA and CARB emissions compliant.

Since surely causing no electrical shock or electrocution, it has No GFCI Outlets while still enables to be shipped over 50 states in the USA, including Canada.

Champion 4000-watt is a versatile generator because of two wonderful features:

  • RV ready: to be used conveniently in both home and RV appliances
  • Parallel ready: to ably connect to another Champion 4000-watt generator for double power output

Product Specifications

Fuel Capacity2.9 gallons
Fuel TypeGasoline
Run Time (1/4 Load)17 hours
Item Weight (lb.)81.6
AC Rated Output Running Watts3500W
AC Maximum Output Starting Watts4000W
Noise Level (dBA)64
OutletsA 120V 30A RV, plus two 120V 20A household outlets, and 12V DC outlet with dual USB adapter
Highlight FeaturesAdvanced Open Frame Inverter Design, Quiet Technology and Extended Run Time, clean electricity for sensitive electronics, RV Ready, parallel ready

With an emphasis on lightweight construction, quiet operating, and extended runtime, Champion 4000-watt is the best choice for the next home backup, RVs, or tailgating.

Pulsar PG4000iSR – Most portable

83 Reviews
Pulsar 4,000W Portable Gas-Powered Quiet Inverter Generator with Remote Start & Parallel Capability, CARB Compliant, PG4000iSR
  • 4, 000 peak watts/ 3, 500 running watts
  • Capable of up to 15 hours of extended operation at half load on 3. 4 gallons of fuel
  • Convenient wireless remote start allows you to operate the unit from up to 80 ft away
  • Quiet operation (63 db) make it virtually silent from just 10 Feet away
  • The most portable generator in this list for storage capability & transport
  • Good maneuverable wheels
  • Super-long runtime

  • Need a break-in period
  • Run roughly at no or little oil

Pulsar 4,000W impressed me with an unbeatable 15-hour runtime at 50% load. It might be according to a significant contribution of the leveraged 3.4-gallon fuel tank. Or, the satisfactory success of its new inverter technology. Whatever!

What I truly appreciate is contrasting to a powerful engine and high power-output, this generator still keeps phenomenal portability.

There are telescoping handles, never-flat wheels, and a compact design that I believe anyone can easily lift it on/off a vehicle.

Glad that it also includes an oil bottle and a spark plug wrench that can set up and use the unit right after breaking it in.

With 4000 starting watts and 3500 running watts, I find the generator is relatively quiet and lightweight (compared to other counterparts in its field). At 10 feet, the noise level is roughly 63 dBA – a bit louder than a running AC but still acceptable (at least in my opinion).

Product Specifications

Fuel Capacity3.4 gallons
Fuel TypeGasoline
Run Time (50% Load)15 hours
Item Weight (lb.)92.6
AC Rated Output Running Watts3500W
AC Maximum Output Starting Watts4000W
Noise Level (dBA)63
Outlets(1) 120V 20 Amp Duplex outlet, (1) 120V 30 Amp RV outlet, (1) 12V DC 8 Amp outlet & (1) integrated USB outlets
Highlight FeaturesCompact design with extendable Handle and Never-Flat wheels, stable sine WAVE Technology, parallel capability

Pulsar PG4000iSR is one of the rare inverter generators that come with a perfect compromise of a powerful motor and compact silhouette that you can’t be happier with this purchase.

WEN 56380i – User-friendliest

4,056 Reviews
WEN 56380i Super Quiet 3800-Watt Portable Inverter Generator with Fuel Shut-Off
  • Dimensions: 23.2" L x 18" W x 20.1" H | Weight: 99.2 lb
  • EPA III and CARB Compliant
  • 212cc 4-stroke OHV engine produces 3800 surge watts and 3400 rated watts with a half-load runtime of up to 8.5 hours
  • Fuel shutoff maximizes the generator’s lifespan by using up the remaining fuel in the carburetor before shutting down
  • Use fuel more efficiently and extend the generator’s life pan
  • Quietest in the list
  • Easy to track many indicators at one spot or during the night
  • Protect the unit against overloading

  • Fueling is prone to spill out
  • Need many pulls to start off

As advertised, WEN 56380i boasts an extremely quiet operation of 57 decibels that during a power shortage, I don’t mind disturbing my neighbors at all.

The generator is also easy to use, which is what truly sold me.

It’s designed with portability in mind, including a collapsible handle and built-in wheels. There are also an electric start and a digital wattage meter where I can track many indicators, such as frequency, fuel supply, voltage, and runtime.

I use this a lot during the power outages as it’s powerful enough to run multiple appliances at once while the overload protection feature saves me from some scares.

The last worth-mentioning bonus is its fuel shutoff. What this allows, is extending maximumly the generator’s lifespan since it uses up the remaining gas in the carburetor before really out of juice.

Product Specifications

Fuel Capacity2.2 Gallons
Fuel TypeGasoline
Run Time (50% Load)8.5 hours
Item Weight (lb.)111
AC Rated Output Running Watts3400W
AC Maximum Output Starting Watts3800W
Noise Level (dBA)57
Outletstwo three-prong 120V receptacles, one AC 120V NEMA TT-30R RV receptacle, one 12V DC receptacle, one 5V USB port
Highlight FeaturesEco-Mode switch, oil access cover, spark arrestor, low-oil, and low-fuel automatic shutdown, indication lights, and overload protection

If you’re a newbie and looking for a user-friendly and quiet 4000-watt generator, WEN 56380i is the best bet.

DuroStar DS4000S – Best overall open frame generator

1,273 Reviews
DuroStar DS4000S 4000 Watt Portable Recoil Start Gas Fuel Generator
  • POWERFUL DUROSTAR ENGINE: The DS4000S is powered by a DuroStar 7 HP 208cc OHV engine with automatic low oil shutoff; Fuel Capacity: 3.96 Gallons; Noise Level: 69dB
  • PLENTY OF POWER: With 4,000 peak watts and 3,300 running watts, this unit is a workhorse that provides plenty of power to handle multiple jobs from powering high voltage appliances to heavy duty power tools
  • POWER PANEL: Includes a selection of outlets for maximum compatibility in your applications including: 2 120V household outlets and 1 120V 30A twist lock outlet; Also includes a voltmeter for measuring voltage output
  • POWERING EVERYONE ANYWHERE: Like all DuroStar generators, the DS4000S is EPA and CARB approved for use in all 50 states
  • Provide plenty of power to fit different tasks and needs
  • Avoid overheating effectively
  • Easy-to-read fuel gauge

  • No wattmeter

Amongst the most affordable quietest 4000-watt generators is DuroStar DS4000S.

Priced under $350, it’s hard to believe that while providing a powerful motor with 8 hours of runtime, the unit is still equipped with many safety features. There is a low-oil shutoff function, inverter technology and especially, an air-cooled OHV engine to avoid overheating.

It also has a surge-arrest feature to avoid power surges as well as a low-oil shutoff capability that will auto-shutoff the generator when it senses the oil is low.

For such reasons, no strange when it’s EPA and CARB approved and allowed shipping in Canada.

According to the provided 120V 30A twist lock outlet and 120V household ones, this is my favorite pick to operate many heavy-duty power tools, sporting events, job sites, and camping.

Product Specifications

Fuel Capacity3.96 gallons
Fuel TypeGasoline
Run Time (50% Load)8 hours
Item Weight (lb.)105
AC Rated Output Running Watts3300W
AC Maximum Output Starting Watts4000W
Noise Level (dBA)69
Outlets2 120V household outlets and 1 120V 30A twist lock outlet.
Highlight FeaturesPowered by a DuroStar 7.0 Hp, air cooled OHV engine, low oil shutoff, provides plenty of power, includes a selection of outlets for compatibility, EPA and CARB approved

Built with an open frame and durable construction, DuroStar DS4000S is a good selection amongst open frame generators, which surely won’t make you regret.

Champion 76533 3800-Watt – Best dual fuel

  • Can double the generator’s lifetime
  • Handle almost powerful appliances like fridge and AC without sudden out of juice
  • Protect your devices from damage & power surges
  • RV ready

  • Poorly located oil drain -> difficult to use
  • Short hand-tow handle
  • Not start well during the winter if you use gas to power it

Pick this whenever I need my 15,000 BTU air conditioner running during a camping trip or home power shortage. Powered with 4750 starting watts and 3800 running watts, it runs like a beast. In many cases, you don’t need to temporarily shut down your AC to run other appliances.

Out of such wonderful performance, I’m even more impressed by its dual fuel technology.

The runtime is accordingly different. It will be 9 hours if operated by a full tank of gas while up to 10.5 hours by propane. While many people love using gasoline as it’s easy to find and cheap, I prefer the second choice.

Propane, despite costlier, is a clean power that doesn’t cause harm to the engine if irregularly used. Not to say that it’s easier to store, lasting longer and steadier starts every time.

Product Specifications

Fuel Capacity4 gallons
Fuel TypeGasoline & propane
Run Time (50% Load)9 hours – gas

10.5 hours – propane

Item Weight (lb.)100
AC Rated Output Running Watts3800W – gas

3240W – propane

AC Maximum Output Starting Watts4750W – gas

4275W – propane

Noise Level (dBA)68
Outlets120V 30A RV, 120V 30A locking, two 120V 20A household outlets
Highlight FeaturesNoise level: 68 dB, reliable 224cc Champion engine with Touch Start, push-button electric start, RV ready, outlets all secured by Volt Guard

If your biggest concern when choosing a 4000W generator (aside from its silent performance) is convenient usage, Champion 3800-Watt is never disappointing you.

Rainier R4400 – Most fuel efficient

395 Reviews
Rainier R4400 Portable Generator with Electric Start - 4400 Peak Watts & 3600 Rated Watts - Gas Powered - CARB Compliant
  • 4400 Peak Watts and 3600 Running Watts; Up to 18 Hours of Run Time at a 25% Load; 4 Gallon Gasoline Tank with Fuel Gauge and Automatic Low Oil Shutdown
  • Electric Start – Easy Access One-Touch Power Switch with Emergency Back-Up Recoil Start
  • Features Two 5-20R 120V 20 AMP Outlets for Home Use, One L5-30R 120V 30 AMP Outlet, and One TT-30R 120V 30 AMP Outlet; Two Grounding Ports; VFT Display – Volts, Frequency, and Lifetime Hours
  • EPA and CARB Compliant; Powered by 212cc OHV 4 Stroke Rainier Engine; Operational Volume as Low as 65 dB
  • Competitive price with high quality and safety
  • Prevent the hassle of using recoil start
  • Can track the oil level easily

  • Heavy

Designed with a wide selection of outlets and 4400 starting watts, Rainier R4400 is a versatile generator that you can conveniently plug in different appliances at once.

At 1/4 load, a 4-gallon fuel tank can keep working within 18 hours with fluctuations before draining out of juice. Hence, it’s the most fuel-efficient out of a bunch.

Fueling this generator isn’t as challenging as when with other counterparts, which I really appreciate. There’s also a built-in fuel gauge that comes in handy if you want to keep tracking the tank capacity to know when it’s time for the next refilling.

And the last advantage is an Easy-to-Use Electric Start Switch. It saves you against the hassle of pulling a recoil start. Instead, to kickstart the unit into action, it just takes you a simple toggle of a switch.

Product Specifications

Fuel Capacity4 gallons
Fuel TypeGasoline
Run Time (1/4 Load)18 hours
Item Weight (lb.)111
AC Rated Output Running Watts3600W
AC Maximum Output Starting Watts4400W
Noise Level (dBA)65
OutletsTwo 5-20R 120V 20 AMP Outlets for Home Use, One L5-30R 120V 30 AMP Outlet, and One TT-30R 120V 30 AMP Outlet; Two Grounding Ports
Highlight FeaturesEasy Access One-Touch Power Switch, EPA and CARB Compliant, powered by 212cc OHV 4 Stroke Rainier Engine

Constructed with fuel-efficient technology at an affordable price, I’m sure that Rainier R4400 will gives some precious bucks on your hands.

How to choose the quietest 4000-watt generator (buying guide)

Inverter technology

Running at 4000 wattages, if it’s a conventional generator, the noise level must be somewhere between 70 dBA and 79 dBA, which is really noisy and your neighbors never like this.

Conversely, an inverter model can drop down that range to 55 dBA – 68 dBA, which is the reason making it the top choice for camping, fishing trips, caravanning, and even home power backup to avoid disturbing neighbors.

Eco throttle

This is essential to silence a 4000W generator since it allows the unit’s engine to auto-adjust its speed, hence, producing only the needed power for specific loads.

Compared to a traditional generator that might operate up to 3600 RPM (rotation per minute), the one with an eco-throttle can deliver a much lower number than that. while keeping power and frequency for the needed load.

As not running at full speed all the time, this feature decreases fuel consumption by up to 35%, therefore, lower noise level.

Sound absorbing material

Since most noise comes from vibration, some generators are added sound absorbing material, like padded foam and rubber washer to their case

Muffler & fans

Most of the noise will be expelled through the exhaust. If your generator is built with a quality muffler, it can decrease the noise coming out. There’s a basic rule of thumb – the bigger the muffler, the less noise and pitched noise released.

Who makes the best 4000-watt generator?


Regardless of the reputation, Champion’s generators highlight an inverter technology to deliver silent operation. Their products are also reliable in terms of safety features with volt guards and surge protection.


Pulsar’s generators just keep relatively silent performance but instead, they emphasize portability and extended runtime. With 4000 starting watts, that’s a good choice for outdoor activities like camping, tailgating, or RVs.


The next brand renown for making the quietest 4000W generators is WEN. Their inverter technology includes an Eco-Mode switch to adjust the power flow to fit different loads. Hence, the lower the load, the quieter.


Not only run silently, but DuroStar generators are also the most favorite picks of tight-budget users because of its affordability. Their products are crafted with safety in mind and the performance gets no remorse from customers.


The last suggestion is Rainier. Their products are crafted from the exclusive engine to ensure giving the quietest performance while keeping fuel efficiency. Despite a newcomer, they meet all safety requirements and also, very affordable.


Is pure sine wave inverter necessary?

Yes, it is. Unlike the modified sine wave inverter, the pure model can limit the number of harmonics, minimizing harms when running vulnerable devices. If you use a CPAP machine, a pure sine wave inverter is a must.

How long will a 4000-watt inverter last?

Three decisive features for the running time of a 4000-watt inverter generator:

  • Fuel tank capacity: The larger the tank, the longer the generator lasts
  • Fuel efficiency: Shown through many features, like an eco-mode switch and smart throttle. The more fuel efficient, the longer the unit can last
  • Loads: The higher power loads, the shorter it will last.

What will a 4000-watt generator run in a house?

There’s actually no exact answer for this question because it is different from house to house. In my case, a 4000W generator can run a 15,000 BTU AC and some lights. Or, many electronics at the same time.

To estimate yours, it’s essential to list out all appliances/devices that are needed operating, sum up their surge watts. To give you more hints, this wattage table might be helpful.

Can my generator get wet?

I recommend not. Electricity and water aren’t a good friend of each other. Even exposing a semi-waterproofed generator under heavy rains, there might have some electrocution and danger.

Should I use synthetic oil in my generator?

Yes, you should. Synthetic oil is well-known for many benefits when using generators:

  • Eliminate friction and wears when the unit runs hot
  • Give excellent performance in cold weather
  • Lubricate engine parts to run faster

How often should I change the oil in my generator?

You should find the owner’s manual. In general, it will be after 30-50 hours of runtime.

Is it okay to run a generator without a load on it?

No, it isn’t. Running a generator offload might lead to wet stacking, causing irreversible damage to the engine.

While it’s advised running the unit onload, you also should do a load bank test to burn off the excessed fuel, ensuring a smooth performance.


I’ve just thrown some light on choosing an appropriate generator for variable usages and get you up, close, as well as personal with the top-rated 6 best quiet 4000-watt generators. Hopefully, they were helpful to you and thanks for reading!

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