Generators become essential during power outages or when you need to go to road or camping trips. A 4000-watt generator can help you with that. It can give enough power to keep running home appliances like lights, fans, refrigerator, and water pump at home. You can also use it to run your RV. A couple of power tools are easy to use with it as well.
Here, we are reviewing the five best 4000-watt generators to help you in selecting one easily.
4000-watt Generator Reviews
|Best 4000-watt Generator [Comparison]|
|Editor's ChoiceDuroStar DS4000S Portable Generator||LATEST PRICE →|
|Champion Power Equipment 46539 Portable Generator||LATEST PRICE →|
|WEN GN400i Open Frame Inverter Generator||LATEST PRICE →|
|DuroMax XP4000S Portable Generator||LATEST PRICE →|
|All Power America APGG4000 Portable Generator||LATEST PRICE →|
1. DuroStar DS4000S Portable Generator – Best 4000-watt Generator for the Money
Generator Type: It is a gas-powered portable conventional generator that is perfect for RVs, camping, job sites, tailgates, and home back-up power.
Engine: DuroStar DS4000S is powered by a 208cc, 7HP OHV engine with an air-cooled cooling system.
Power Output: It produces 4000 peaks (starting watts) and 3300 rated (running watts).
Fuel Tank Capacity and Runtime: The fuel tank capacity of this generator is 3.96 gallons that can give up to 8-hour runtime at 50% load. It also features a fuel gauge that tells the amount of fuel available.
Start System: There is only a recoil start system.
Safety: An automatic low-oil shutoff sensor turns off the engine when it senses lower oil levels. Also, the generator is equipped with a surge arrester that protects your electric equipment from over-voltage transients caused by any internal or external event.
Power Outlets: If we focus on power outlets, then we have two 120V AC 20A household outlets and one 120V AC 30A twist-lock outlet.
Operational Sound: DuroStar DS4000S operates at 69 dB (A), thanks to its super quiet muffler.
Certifications: It is an EPA (Environmental Protection Agency), and CARB (California Air Resources Board) approved unit. Both these certifications make this generator safe for the environment.
Weight and Warranty: The DS4000S is backed by a 3-year limited warranty and weighs 94 pounds.
Other Features: Other features include a voltmeter (voltage meter), an optional wheel kit, and GFCI protected outlets. GFCI (Ground Fault Circuit Interrupter) is a circuit breaker that breaks the circuit or shuts off the electric power to protect you from an ongoing electric shock. It compares the amount of incoming and outgoing current from equipment along the circuit conductors and acts accordingly.
2. Champion Power Equipment 46539 Portable Generator – Best 4000-watt Generator for RV
Generator Type: It is a conventional gas-powered generator that can also be used to power RVs since it is an RV-ready unit.
Start System: All three start mechanisms are available (electric, remote, and recoil). There is a 3-way ignition switch for electric start. And the remote start mechanism includes a wireless remote key fob. You can easily turn your generator on and off from up to 80 feet away. Also, the unit features a cold start technology that ensures easy starts in winters.
Certifications: Champion 46539 fully meets the standards set by EPA and CARB.
Weight and Warranty: The weight of this generator is 140 pounds, and it comes with a 3-year limited warranty.
Engine:It is equipped with a Champion 196cc single-cylinder OHV engine. Its engine is less potent than the DuroStar DS4000S.
Power Output: You will get 4000 starting watts and 3500 running watts.
Fuel Tank Capacity and Runtime: On a 3.8-gallon gas fuel tank, you will get 12 hours of continuous power at 50% load.
Safety: Safety features include Volt Guard and low-oil shutoff. Volt Guard is a built-in surge protector that keeps your appliances and equipment safe from damages caused due to overloading. It protects against power surges.
Power Outlets: The power outlets include two 120V AC household outlets, one 120V AC 30A twist-lock outlet, and one 120V RV-ready outlet.
Operational Sound:68 dB (A) is its operational sound.
Other Features: There is an intelligauge that shows volts, frequency in hertz, and runtime in hours. Also, there are wheels and fold-down handles that make transportation easier.
3. WEN GN400i Open Frame Inverter Generator – Best 4000-watt Inverter Generator
Generator Type: WEN GN400i is an open frame inverter generator that runs on gasoline.
Engine: We have a 212cc 4-stroke OHV engine.
Power Output: It produces 4000 watts of peak power and 3500 watts of running power.
Fuel Tank Capacity and Runtime: WEN GN400i is a small unit, and that’s why its fuel tank capacity is only 1.85 gallons. On a full tank, you will be able to power your appliances for up to 7 hours.
Start System: You can start the generator with a simple pull.
Safety: There is built-in overload protection along with low-fuel and low-oil automatic shutdown.
Power Outlets: Two 5V DC USB ports, two 120V AC outlets, and one 120V 30A twist-lock outlet
THD Rating: Its THD rating is quite low since it is an inverter generator. At no load, its THD rating is less than 0.3%, and at full load, it is under 1.2%.
Weight and Warranty: If we focus on its warranty, then it is for 2 years. And its weight is 70.5 pounds.
Other Features: There is an Eco-mode switch that changes the engine’s speed as you add or remove the load. This allows you to save fuel as well as money. The generator is also parallel capable. It means you can connect another WEN GN400i with the help of a WEN parallel connection kit. More, we have three light indicators (low-oil, output, and overload). The output indicator shows that the unit is ready to use, low-oil indicator tells that your unit is running out of oil, and overload indicator notifies that the generator is taking the extra load.
4. DuroMax XP4000S Portable Generator – Best 4000-watt Generator with Extended Runtime
Generator Type: DuroMax XP4000S is also a gasoline-powered conventional generator that comes with a wheel and handles kit for easy transportation.
Engine: It is powered by a 208cc, 7HP 4-cycle air-cooled engine.
Start System: You can turn on the generator with the help of a recoil start system.
Power Output: The XP4000S can generate 4000 starting watts and 3300 running watts.
Fuel Tank Capacity and Runtime: On a 3.96-gallon fuel tank, the generator can run up to 12.3 hours at half load.
Safety: Safety features include low-oil shutoff and overload protection.
Power Outlets: It has two 120V 20A outlets and one 120V 30A twist-lock outlet.
Weight and Warranty: The weight of XP4000S is 90 pounds, and it comes with a 2-year limited warranty.
Operational Sound: It has a decibel rating of 69 dB (A).
Certifications: You cannot ship this generator to California since it is not a CARB compliant unit.
Other Features: There is a voltmeter along with a low-oil indicator.
5. All Power America APGG4000 Portable Generator – Best 4000-watt Portable Generator
Generator Type: The last but not the least 4000-watt generator in our list is the All Power America APGG4000. It is a conventional gas-powered generator.
Power Output: It can produce 4000 peak watts and 3300 rated watts.
Engine: We have a 208cc, 7HP OHV air-cooled engine.
Fuel Tank Capacity and Runtime: Get an 8-hour runtime at 50% load on a 4-gallon fuel tank. Its runtime is equal to DuroStar DS4000S but lower than Champion Power Equipment 46539 and DuroMax XP4000S.
More Duromax generators here: DuroMax Generator Reviews: Top 5 Picks
Operational Sound: It operates at 72 dB (A).
Start System: Recoil start system
Safety: Low-oil level shutdown sensor
Power Outlets: All Power America APGG4000 has one 12V DC outlet, two 120V 20A outlets, and one 120/240V twist-lock outlet.
Certifications: It is an EPA certified unit but not CARB compliant.
Weight and Warranty: The weight of APGG4000 is 136 pounds.
Other Features: There is a voltage switch that allows you to switch between 120V and 240V but never try to switch between voltages when there is load. Also, we have power and low-oil indicators.
In this section, you are going to know about those factors that require your consideration at the time of purchasing a 4000-watt generator. So, what are those factors? Take a look.
Conventional and Inverter Generator
You will find both the conventional and inverter generators that produce 4000-watt power output, so the selection of any type depends on you.
Inverter generators are small, portable, and light in weight. They produce clean and stable power to keep your appliances and electronics safe and secure. They also operate quietly.
Conventional generators are big, but they also come with wheel and handle kits for easy transportation. But they produce higher power output then inverter generators. Also, most of the conventional units are louder.
Starting and Running Watts
There is a difference in the starting and running watts of the generator. Not all the generators come with 4000 running or rated watts. It is the peak or starting watts that matter the most when you run motorized appliances on your generator. This peak power starts these appliances, and then the running watts come into play.
Before purchasing a 4000-watt generator, make a list of those items that you need to run on your generator and then add their watts to make sure they are less than 4000.
Fuel Tank Capacity
Fuel tank capacity is also important as it determines the number of hours a generation can run. It depends on the load applied. Generators have different runtimes at 25%, 50%, 75%, and 100% load. Make sure you have at least a 4-gallon tank to get good runtime on conventional generators.
As I said, a 4-gallon tank is best for a conventional generator so that you will get more than a 10-hour runtime. But in case of an inverter generator, a 2-gallon tank can match the runtime of a conventional one. The runtime also depends on the efficiency of the engine. A fuel-efficient engine gives more runtime than a non-fuel-efficient engine.
A 4000-watt generator comes with two standard 120V AC outlets and as many as 4 and 6 outlets. Make sure the outlets you are looking for, available in your selected generator. If you are finding a generator for your RV, ensure it has an RV-ready outlet. And if you are going to run power tools, your generator must have a 120/240V 30A twist-lock outlet. A 12V DC outlet would make a difference. Also, USB ports are the best inclusion.
You must also consider the noise level. Try to find a generator with lower decibel ratings. Less than 70 dB (A) is good in the case of a conventional generator. But inverter generator is as low as 55 dB (A). Make sure your generator is going to help you in sleeping at home and working at a construction site with comfort. Noise is disturbing if it is on the higher side. At homes, try to save your neighbors from any sort of discomfort. Also, at the construction sites make people work in peace.