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Gasoline-powered generators are ideal for home, work, and play. They can also act as lifelines when disaster strikes. Yet most models share a notorious Achilles heel – loud and disruptive operation. Standard generators produce 69-81 decibels of noise. That’s because they use traditional engine systems that run at full speed regardless of energy demands.

All that excess revving breeds noise pollution. It also wastes fuel and spikes emissions production. Still, companies hesitated to address this glaring issue for years. After all, conventional generator motors rely on peak RPM rotation to generate electrical output. Reducing speeds risks destabilizing current flows and damaging connected equipment.

Thankfully, recent engineering breakthroughs in inverter technology finally eliminated this long-standing tradeoff between power and peaceful operation. Inverter generators can throttle their motor speeds up and down to match electrical loads needed second-by-second. This intelligent speed modulation comes courtesy of onboard computers.

Inverter models operate far more quietly than their traditional counterparts by tuning RPMs to energy draw. Noise levels commonly fall into the 55-65 decibel range – no louder than your typical conversations. The advanced digital engines also integrate premium noise-cancellation materials. Think custom mufflers and sound-absorbing housing insulation for further dampening.

The cleaner electricity from inverter generators also reduces risk when running sensitive electronics. Most standard gasoline models exhibit 10-15% total harmonic distortion. Inverter variants max out under 3% THD, even powering loads like medical equipment or laptops.

The one tradeoff is that larger energy demands do bump noise levels moderately higher on inverter units. As such, one should only use the right size for intended use. With adequate wattage capacity for prospective uses, the pros outweigh the cons.

Next-generation inverter generators promise far greater efficiency when every decibel and gallon counts. Not to mention silent running. So, how can you choose the right inverter generator for you? Stay informed on the latest market offerings with our 2024 quiet generator guide! We take a look at the best quiet options on the market and how they compare to one another.

Full list of quiet generators:

1. Quietest for 2500W – PowerSmart PS5020W – 56 dBA

We begin with the PowerSmart PS5020W 2500W portable inverter generator. This one is designed with campers and outdoor enthusiasts in mind. In fact, it weighs only 39 pounds with a suitcase-style carrying handle. This lightweight option offers fuss-free transport to your favorite off-grid spots.

With noise levels clocking in at a mere 56 decibels, the PS5020W is even quieter than your average conversation. This ultra-quiet performance lets you keep peace during trips to noise-sensitive environments like camping grounds. That’s right. It meets the National Park Service camping ground noise requirements. No more noisy rackets disturbing you or your neighbors!

This compact generator packs a reliable 2500 starting-watt power capacity. Enjoy 1900 running watts to tackle essentials like lighting, mobile devices, fans, and mini coolers. Any small appliances you need to live it up in comfort while camping or tailgating. The PS5020W’s 79cc 4-stroke OHV gasoline engine offers convenient recoil start functionality. Pull to fire it up whenever you need power on demand.

An integrated Eco Mode allows the engine to adjust its fuel consumption rate based on loading. By optimizing efficiency, the PS5020W can stretch 1.05 gallons of gasoline to last over 5 hours under a 50% load. This ecology-minded feature saves you both fuel and money in the long haul.

The PS5020W’s control panel puts versatile power within easy reach. There are two standard 120V household outlets for AC connectivity and a 12V DC outlet for directly charging small electronics and power banks. You also get two 5V USB ports to keep smartphones and tablets juiced up. The generator’s total harmonic distortion remains under 1.2%. That means it is safe and reliable enough for sensitive electronics like laptops, tablets, and smartphones. Additional features include an overload indicator and a low oil automatic shutoff sensor. An energy saver on/off switch and built-in parallel connection ports also exist.

With a compact size, the PS5020W offers impressive mobility to keep the power within easy reach at campsites and tailgate parties. The dimensions clock in at 19.1 inches in height, 13.4 inches in width, and 20.1 inches in length. The convenient side-integrated handle lets you transport the generator to wherever the party is!

So, if you’re looking for a portable powerhouse that keeps noise to a minimum for your off-grid adventures, the PowerSmart PS5020W checks all the right boxes. Power your playtime essentials without disturbing Mother Nature or nearby camp neighbors!

Pros:

• Ultra-quiet at just 56 decibels for noise-sensitive environments
• It weighs only 39 pounds for superior portability
• It is very affordable for the power it provides
• Parallel-capable to double power connecting two units
• Total harmonic distortion under 1.2% for safe use with sensitive electronics

Cons:

• Manual pull-start requires more physical effort
• Eco Mode needed to improve fuel efficiency to over 5 hours of runtime
• No electric start function is available

2. Quietest 9000W Generator – GENMAX GM9000iE – 62 dBA

The GENMAX GM9000iE inverter generator packs serious power. It offers both heavyweight capacity and serenely quiet operation. This robust unit provides 9000 starting watts and 7600 running watts. Yet, with its quietness, you wouldn’t believe this strong output. At 23 feet of distance and a quarter load, it produces only 62 decibels. This peaceful performance allows you to use serious strength without disturbance.

Power comes from the GM9000iE’s rugged 458cc engine. This efficient 4-stroke OHV design provides industrial-grade durability. It enables the generator to tackle heavy loads. We’re talking RV air conditioning, multiple fridges/freezers, job site equipment, full food trucks, emergency home backup, and off-grid cabins. The GM9000iE complies with EPA emissions regulations. It also produces clean electricity with less than 3% total harmonic distortion. Such smooth and stable power protects sensitive devices like TVs, laptops, and cell phones.

The unit starts wonderfully simple thanks to the push button electric ignition and automatic choke. Even better, the included remote fob provides wireless control from a distance. You can start or stop the generator without useless trips. An LCD digital display provides real-time diagnostics on hours run, power output, voltage, and load levels. It makes it easy to track performance and remain informed of maintenance needs.

The GM9000iE also touts convenient portability. It features a sturdy all-steel handle and a smooth-rolling wheel kit. The foldable handle enables compact storage in tight spaces. Size remains manageable at 30.9 x 22.6 x 29.3 inches.

Outlets and runtime are very generous. The 6.9-gallon fuel tank lasts over 10 hours at a 50% load. Four GFCI household 120V outlets provide standard connectivity. There is also a 30A 240V RV-ready locking outlet and a high-capacity 50A 240V outlet. It even has an integrated dual USB charging port. A voltage transfer switch allows parallel connectivity of two units for 18,000 peak watts.

So, when your activities call for robust power and smooth, reliable performance, turn to the GENMAX GM9000iE.

Pros:

• Impressive 9000 starting watts and 7600 running watts
• Electric start button and long-range remote start
• Very quiet operation at just 62 decibels at a quarter load
• 6.9 gallon tank enables over 10 hours of runtime
• Parallel connectivity available to double power capacity

Cons:

• The heavier frame may hinder portability
• One of the more expensive generator options
• Oil changes can get tricky

3. Quietest for 4500W – Westinghouse iGen4500 – 52 dBA

Westinghouse has over 100 years of expertise in energy technologies. They helped introduce electricity to American households and businesses decades ago. That spirit of engineering shines through in their portable generator offerings as well. The Westinghouse iGen4500 inverter generator is a robust model. Consider it for efficient operation and premium features in a compact portable frame.

This lightweight dynamo unit belies its power capacities. It puts out a staggering 4500 starting watts and 3700 running watts. Then, there’s the 93 pounds of towable weight, smooth-rolling wheel kits, and extendable handles. The iGen4500 offers ample strength with easy portability. Both RV enthusiasts and emergency preparedness planners alike find value in it.

Ease of use remains a top priority in the design as well. The iGen4500 has automatic choke functionality for easy push-button electric starts. Forget grueling recoil pulling to struggle against. A wireless remote start fob even allows ignition from up to 260 feet away for ultimate convenience. Hit the button and return to a running generator, avoiding those tedious trips back and forth.

Durability stands second to none with sturdy construction and weatherproof panels. Westinghouse made sure to safeguard the internal engine and delicate generator components. Automated monitoring systems also help sustain longevity. These systems initiate automatic low oil shutdown if levels drop too low for safe operation. Easy side access panels permit fast oil fills and drains without intensive disassembling. Battery access remains straightforward for some time as well. Inspection or maintenance proves necessary and is done with a quick connection at the back of the unit.

For eco-minded users, the iGen4500 has economy running modes that smartly throttle engine speeds based on energy load. This prevents wasting fuel on excess wattage. It also keeps noise levels remarkably low. Volumes remain at just 52dB during economy operation – about the same level as a gentle kitchen conversation.

Onboard power outlets and extended run times provide last-mile utility as well. Despite the compact size, you’ll find all the connectivity expected from top-tier portable power units. There are two household 120V outlets, an RV-ready 30A locking outlet, and USB charging ports. With a 3.4-gallon integrated gas tank, the generator can endure for 18 full hours on 25% load capacities when utilizing efficient operating modes.

Pros:

• Works with dual fuel (gas and propane)
• Three year nationwide limited warranty
• Up to 18 hours runtime from 3.4 gallon fuel tank
• Extremely quiet at just 52 decibels in economy mode
• Electric and remote push-button start

Cons:

• Parallel kit cord sold separately
• Plastic frame is easy to scratch and damage
• Eco mode greatly reduces the capacity

4. Honda EU2200iTAG Super Quiet Portable Inverter Generator with CO-Minder – 57dB

The Honda EU2200iTAG 2200-Watt 120-Volt Super Quiet Portable Inverter Generator with CO-Minder is a reliable and powerful generator that is perfect for powering your home or RV during an emergency or power outage. 

The Honda GXR120 Commercial Series engine powers this generator. This powerful engine has 121cc of power, ensuring that the EU2200i can handle whatever you need. The raw power of this engine produces 2200 watts of power, only emitting about 48 to 57 dB of noise in the process.

It also includes an advanced Carbon Monoxide Detection System (CO-Minder) that continuously monitors levels of carbon monoxide. 

The EU2200i comes with Honda’s exclusive My Generator smartphone app, which offers remote generator operation and monitoring with impressive performance. It includes wireless start/stop and operation monitoring. The app also provides up-to-date information about your generator, so you can rest assured that you’re always getting the most out of it.

Overall, the Honda EU2200iTAG is a reliable and powerful generator that provides peace of mind during power outages.

Highlighted features:

• Co-Minder technology
• Honda’s My Generator smartphone app
• Wireless start/stop
• Gasoline-powered

What we like:

• Portable and lightweight, it is perfect for camping trips or power outages
• The Honda engine provides reliable power with super-low noise levels

What we don’t like: 

• At 2200 watts, this generator is a little underpowered.

FAQ: Quietest Generators

Q: Who makes the quietest backup generator?

For a long time, Honda generators were the industry standard for near-silent operation. However, new inverter generator models like the PowerSmart PS5020W now match or even exceed the noise ratings from Honda’s lineup. Plus, they come at a more affordable upfront investment. For those prioritizing peaceful operation alongside reliability, PowerSmart sets the new gold standard.

Q: Can you make a generator quieter?

There are various ways to reduce noise on traditional generator models. For instance, adding protective housing, upgraded exhaust system, or panel insulation. Many inverter generators use advanced integrated mufflers and sound-dampening materials. Variable engine throttle systems also cut noise levels right from the factory.

Q: How many watts does a generator need to power a house?

The typical US household requires around 15,000 watts for every system and appliance to run. However, most basic emergency backup generators only need 5,000-7,000 watts to power essential circuits. You’ll get the basics like refrigeration, lighting, fans, and medical devices. Prioritizing necessities brings runtimes up and prevents overtaxing the generator.

Q: Are whole house generators quiet?

Permanent standby whole-house generators run very quietly overall since they operate on propane or natural gas instead of gasoline. Installation inside weather-protective housings provides additional sound dampening. Using an inverter generator model further reduces noise thanks to variable speed engines and advanced mufflers. Look for options rated under 60 decibels for optimal quiet operation during outages.

Q: Is 74 dB loud for a generator?

In contrast to inverter generators rated for 56-65 decibels, 74 dB lands quite loudly and disruptively. For context, normal human conversation happens around 50-60 dB. Noise levels double every 10-decibel increase, so a reading of 70-75+ dB verges on shouting volume. At that time, operational noise, privacy, or concentration proves difficult. Locating the unit far from living spaces helps, but true soundproofing remains challenging.

Q: How loud is 60 decibels?

60 dB corresponds to ambient everyday background noise comparable to a dishwasher, laughing children, or light automobile traffic. It forms a comfortable volume level that adds little disruption to most environments. Conversation, focus, or relaxation can still occur easily at noise ratings of 55-65 dB. By limiting generator operation below 65 decibels, owners minimize disturbances.

Why are inverter generators so quiet?

Inverter generators are differentiated from traditional models by precision engine throttle controls. This allows RPM speeds to scale up or down, perfectly matching power loads second-by-second. Avoiding constant peak RPM operation slashes excess sound and emissions. Inverter models also integrate premium mufflers and custom soundproofing materials for further noise reduction compared to basic generators. By finely tuning the engine speed to actual demand, inverter generators run whisper-quiet.