The 11 best 4000 watt generators of 2025

At less than 49 pounds, this inverter is one of the lightest 4000-watt inverters in the industry

64 dBA from 23 feet is perfect for camping, tailgating or to backup a few home essentials, with 4000 starting watts, 3000 running watts and up to 10 hours run time, plus features CO Shield carbon monoxide auto shutoff system

The optional parallel kit enables this inverter to connect with another 4000-watt Champion inverter to double your output power

Includes a 120V 25A TT-30R outlet, a 120V 20 A household duplex outlet (5-20R) with clean electricity (less than 3% THD), plus a 12V automotive-style outlet, and Parallel outlets

Includes 3-year limited warranty with FREE lifetime technical support from dedicated experts

51 lbs [Extreme light weight]

12oz gas tank, 4.5 hrs run time @ half load

3200W Rated / 4000W Peak

RV ready, AC ready, Fridge ready

4000 Peak Watts and 3300 Rated Watts at Less Than 3% THD – Telescoping Handle – Gas or Propane Powered – Remote Start With Included Key Fob, Electric and Recoil Start

Features a 5–20R 120V Duplex Household Outlet, an RV-Ready Tt-30R 30 Amp Outlet and Two USB Outlets – Great Choice for Travel Trailers or Home Use with Automatic Low Oil and Carbon Monoxide (CO) Shutdown – Strong Enough to Run All Your Essentials

Led Data Center: Rotating Digital Display Shows Fuel Level, Power Output, Remaining Run Time, Voltage Output, and Lifetime Hours

Extremely Quiet, Extremely Fuel Efficient: as Low as 52 dBA Noise Output and Up to 7 Hour Run Time on a 1.69 Gallon Gas Tank – Features “Economy Mode” for Maximum Fuel Efficiency

All Westinghouse Portable Generators are Functionally Tested in the Factory and May Contain Minimum Residual Oil and/or Fuel Odor; EPA Compliant; Backed By 3-Year Limited Service, Labor, and Parts Coverage and Nationwide Customer Service Network

3600 Running Watts and 4650 Peak Watts; Recoil Start; 4 Gallon Fuel Tank With Fuel Gauge; Up to 14 Hours of Run Time Per Tank

Feature Two 5–20R 120V Household Duplex Receptacle, One RV-Ready TT-30R 30 Amp Receptacle, and One L5-30R 30 Amp Receptacle; All Outlets Have Rubber Covers for Added Safety

Plug-and-Play: Comes With Oil, an Oil Funnel, a Tool Kit, and a User’s Manual to Get You Started Right Out of the Box (Minimal Assembly Required)

Powered by a 212cc Westinghouse 4-Stroke OHV Engine Featuring a Long-Lasting Cast Iron Sleeve With Automatic Low Oil and Carbon Monoxide (CO) Shutdown

All Westinghouse Portable Generators are Functionally Tested in the Factory and May Contain Minimum Residual Oil and/or Fuel Odor; EPA Compliant; Backed by 3-Year Limited Service, Labor, and Parts Coverage with Nationwide Customer Service Network

𝗣𝗼𝘄𝗲𝗿𝗳𝘂𝗹 𝗢𝘂𝘁𝗽𝘂𝘁: 4000 peak watts and 3200 running watts, gas powered by 208CC 4-stroke OHV engine, perfect for RV camping and home backup.

𝗠𝘂𝗹𝘁𝗶-𝗢𝘂𝘁𝗽𝘂𝘁 𝗢𝗽𝘁𝗶𝗼𝗻𝘀: Includes 2*120V AC ports, 1*12V DC port, 1*RV port.

𝗟𝗼𝗻𝗴 𝗥𝘂𝗻𝘁𝗶𝗺𝗲: Runs for up to 14 hours at 25% load with ECO mode, 2 gallon fuel tank with fuel gauge, allows you to check fuel levels at a glance, keeping you prepared.

𝐋𝐨𝐰 𝐍𝐨𝐢𝐬𝐞: Under 72 dBA from 23FT away, this generator provides steady power for your home during a power outage or RV nights.

𝗟𝗶𝗴𝗵𝘁𝘄𝗲𝗶𝗴𝗵𝘁 𝗮𝗻𝗱 𝗣𝗼𝗿𝘁𝗮𝗯𝗹𝗲: Only 56lbs, easy to move around.

𝗡𝗼𝘁𝗲: All generators are functionally tested in the factory, there may be a slight smell of gas when you receive it. Don't worry about it, it's not second-hand.

Operate your 4000-watt portable generator right out of the box on either gasoline or propane, plus features CO Shield carbon monoxide auto shutoff system

With an ultra-quiet 64 dBA from 23 feet, enjoy 4000 starting watts, 3000 running watts and up to 10 hours run time on gasoline, and 2700 running watts and up to 25 hours on propane

The optional, sold-separately parallel kit enables this inverter to connect with another Parallel Ready Champion Inverter or Power Station for more power and longer run time

Includes a 120V 25A TT-30R outlet, a 120V 20 A household duplex outlet (5-20R) with clean electricity (less than 3% THD), plus a 12V automotive-style outlet, and Parallel outlets

Includes 3-year limited warranty with FREE lifetime technical support from dedicated experts

224cc engine generates up to 4800 surge watts and 4000 rated watts

Produces clean power to prevent damage to sensitive electronics such as smartphones, tablets and laptops

Ultra-efficient 1.9-gallon tank provides up to 7 hours of half-load run time

Fuel shutoff maximizes the generator’s lifespan by using up the remaining fuel in the carburetor before shutting down

Includes onboard wheels, a telescoping pull handle, four three-prong 120V receptacles, one TT-30R RV receptacle, one 12V DC receptacle, two 5V USB ports, and a three-year warranty

【App Data Monitor】The MXR4000 portable generator offers a remote monitoring function. The App instantly examines the power output, fuel level, voltage, frequency, single running time, accumulated running time, and other information. You can also switch on/off ECO mode via the App for optimal fuel efficiency.

【Easy RV Charging】The generator comes with an NEMA L5-30R RV outlet and an adapter, simplifying the charging process so you can charge the RV with ease and convenience. Say goodbye to the stress of RV charging and enjoy carefree travels.

【Versatile Power Supply】The inverter generator produces 4000 peak watts and 3200 running watts of clean power, ideal for powering high-rated and sensitive electrical appliances. It is also perfect for RV travel, tailgating, camping, parties, gardens, yards, and home backup during power outages.

【Compact Portable Travel Assist】Measuring only 18.89"L*12"W*17.32"H, and lightweight design at just 48.5 pounds, equipped with LED lights, making it the perfect addition to any camping or outdoor adventure, you can take it anywhere you want.

【Brand Warranty】maXpeedingrods warrants all the inverter generators against defects in workmanship under normal use for a period of 2 years from the date of retail purchase by the original end-user purchaser ("Warranty Period") and free lifetime technical assistance and customer care.

【Strong Power】This portable generator has a starting power of 4000W that can your daily needs of various electrical appliances and equipment in camping, outdoor activities or home backup power.

【Low Noise】POXURIO inverter generator adopts advanced sound reduction technology and produces a noise value of only 66 decibels during operation(much lower than other traditional generators), ensuring the comfort of electricity consumption.

【Gas Powered】Our gas powered generator is welcomed by the majority of people. Compared with other fuel types, gasoline is more convenient to store, more affordable, and more convenient to obtain, making it one of the most common fuels in people's daily lives.

【Parallel Operation】This generator outdoor supports parallel operation, and you can achieve power supply of over 4000W by 2 or 3 machines. Also it has excellent current stability that protects electrical equipment from voltage fluctuations.

【Lightweight Design】The generator is made of lightweight materials, weighing only 52.9 pounds so it is easy to carry and store. You can easily carry and set up this generator to meet the backup power needs for outdoor camping and emergency situations.

Energize Almost Everything. The EcoFlow DELTA Pro 3 supports 120V/240V voltage and has a 4000W output (6000W with X-Boost, scalable up to 12000W), powering nearly all essential home appliances, such as a 3-ton* central AC or a 1 HP water pump.

Forget Refueling. Featuring a 4096Wh LFP battery capacity, expandable to 48kWh with extra batteries or smart generators, providing 2-4 days of whole-home backup power. With 7 unique and 18 combo charging methods like AC wall outlets, solar panels, gas generators, EV charging piles, or the EcoFlow smart home panel 2, you can forget fuel worries.

Plug and Play. Experience hassle-free power with the DELTA Pro 3, a versatile portable power station that's easy to set up, even a kid can manage it. No installation or maintenance required. Its portable handle design makes this solar generator perfect for clean, renewable energy anywhere, anytime. Control and monitor your power with the EcoFlow app, even remotely.

Uninterrupted Life. With the ultra-fast 10 ms switch-over capability of the EcoFlow DELTA Pro 3, enjoy instant backup for your NAS systems, servers, and entertainment devices. Safeguard against power disruptions and ensure continuous, safe operation. This portable power station is your reliable partner for an uninterrupted life.

Silent as a Whisper. With X-Quiet technology, this solar generator operates at a peaceful hum as low as 30 dB, ensuring undisturbed sleep even beside your bed. Its whisper-quiet operation is so discreet, you'll hardly notice it's there, making it perfect for both indoor and outdoor use.

Explore the Secure Feeling. The EcoFlow DELTA Pro 3 features automotive-grade LFP cells and IP65-rated CTC battery pack technology, safeguarding battery health and extending lifespan. Enjoy peace of mind with a 5-year warranty and exceptional customer service, available anytime for any issues.

To ensure prompt delivery, please note that the DELTA Pro 3 Solar Generator and 400W Solar Panel will be shipped separately. If you receive one item before the other, kindly await the arrival of the remaining item.