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Model #GN400i

RV-Ready 4000-Watt Gas-Powered Open Frame Inverter Generator, CARB Compliant

  • Super quiet generator perfect for camping and emergency backup
  • Inverter safely charges laptops, cellphones and other electronics
  • Fuel shut-off limits maintenance for easy startups
  • See More Details

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Product Overview

The WEN 4,000-Watt Inverter Generator provides clean energy, free of voltage spikes and drops for safe use with laptops, phones, and other sensitive electronics. Our 212cc 4-stroke OHV engine produces up to 4000 surge watts and 3500 rated watts of power. Designed to mirror a pure sine wave, this generator limits total harmonic distortion to under 0.3 percent at no load and under 1.2 percent at full load, making it safe to run sensitive electronics. Our ultra-efficient 1.85 Gal. tank provides over 7 hours of half-load run time. The fully-packed panel comes equipped with two three-prong 120-Volt NEMA 5-20R receptacles, two 5-Volt USB ports, and one 120-Volt RV-ready TT-30R receptacle. Maximize fuel economy by engaging the eco-mode switch. This allows the generator's engine to automatically adjust its fuel consumption as items are plugged into and unplugged from the panel, preventing the unnecessary usage of gasoline. Need more energy? Easily link up two generators using a WEN Parallel Connection Kit (sold separately) in order to share wattage amongst multiple units. Low-oil and low-fuel automatic shutdown combine with the built-in overload protection and indicator lights to safeguard both your generator and your electronics from damage. And because its a WEN product, your open frame inverter generator comes backed by a two-year warranty, a nationwide network of skilled service technicians and a friendly customer help line, all to make sure you remember WEN.
  • Generate clean power to safely operate sensitive electronics such as phones, tablets, televisions and computers
  • Parallel-ready panel allows you to connect any two WEN inverter generators for increased wattage output
  • 212cc 4-stroke CARB-compliant OHV engine produces 4000 surge watts and 3500 rated watts
  • Lightweight body weighs 30% less than a standard 4000-Watt generator
  • Includes two 120-Volt NEMA 5-20R receptacles, two 5-Volt USB ports, one 120-Volt RV-ready TT-30R receptacle and a 2-year warranty



  • California residents

Info & Guides

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NameRV-Ready 4000-Watt Gas-Powered Open Frame Inverter Generator, CARB CompliantSuper Quiet 2350-Watt Recoil Start Gas Powered Portable Inverter Generator with Fuel Shut Off, CARB CompliantDH Series 4000-Watt Gasoline Powered Recoil Start Open Frame Inverter Generator with 224 cc Engine4,400/3,600-Watt Dual Fuel LPG/Gas Powered Recoil Start Portable Digital Inverter Generator Kit with Parallel Cable Kit
Price
Ratings
(50)
(201)
(585)
(999)
Engine MakeOEM BrandedOEM BrandedOEM BrandedOEM Branded
CA (CARB) CompliantCARB CompliantCARB CompliantCARB CompliantNot CARB Compliant
Running Wattage3500190035003600
Fuel TechnologySingle FuelSingle FuelSingle FuelDual Fuel
Starting Wattage4000235040004400
FeaturesAuto Idle Control,Automatic Voltage Regulation,Fuel Gauge,Grounded,Low Oil Shutdown,Muffler,On Indicator Light,On/Off Switch,Overload Protection,Resettable Circuit Breaker,Short Circuit Protection,USB PortAuto Idle Control,Automatic Voltage Regulation,Low Oil Shutdown,USB PortLow Oil Shutdown,Muffler,Overload ProtectionAuto Idle Control,Dual Fuel,Low Oil Shutdown,Muffler,On/Off Switch,Overload Protection,Resettable Circuit Breaker,Short Circuit Protection,USB Port
ApplicationJob Site,RecreationCampsite,Job Site,Recreation,TailgatingCampsite,Emergency Use,Job Site,Recreation,TailgatingCampsite,Emergency Use,Home Standby,Job Site,Recreation,Tailgating
Start TypeRecoil StartRecoil StartRecoil StartRecoil Start
Voltage (volts)120120120120
Half-Load Run Time75.56.57
View ProductView ProductView ProductView Product

Specifications

Dimensions

Product Height (in.)
18.9
Product Length (in.)
19.8
Product Width (in.)
13.8

Details

Application
Job Site,Recreation
Built-in inverter
Yes
CA (CARB) Compliant
CARB Compliant
Color Family
Black
Engine Displacement (cc)
212
Engine Make
OEM Branded
Features
Auto Idle Control,Automatic Voltage Regulation,Fuel Gauge,Grounded,Low Oil Shutdown,Muffler,On Indicator Light,On/Off Switch,Overload Protection,Resettable Circuit Breaker,Short Circuit Protection,USB Port
Fuel Tank Capacity (gallons)
1.85
Fuel Technology
Single Fuel
Full load fuel consumption (gallons/hour)
0.53
Half-Load Run Time
7
Horsepower (hp)
4.69
Included
Oil Funnel,Spark Plug Wrench
Number of Outlets
5
Operational Volume (dB)
67
Outlet Type
120V
Power/Fuel Type
Gasoline
Product Weight (lb.)
66.1
Returnable
30-Day
Running Wattage
3500
Start Type
Recoil Start
Starting Wattage
4000
Suggested Uses
Battery Charger,Bench Tools,Halogen Work Light,Large Appliances,Lights,Mobile Devices,Power Tools,RV A/C Unit,Small Appliances,Small Electronics,Sump Pump,Well Pump
Voltage (volts)
120

Warranty / Certifications

Certifications and Listings
CARB Compliant
Manufacturer Warranty
Two-year limited

Questions & Answers

14Questions12Answers

Will this power an RV roof Air conditioner?

Asked by Randy March 11, 2021
1
Answer

Hi Randy, you have 3500 watts of power to use for your a/c. You can check on the plate of your a/c and find the volts and amps, this will help you get the wattage it uses( volts x amps. = watts). You have a TT-30R outlet, this is a 30 Amp. outlet, I sent you two pictures to look at the plug. You also have a second option of hooking up two Wen generators ( parallel kit from Wen at Home Depot) to increase your watts. Hope this helps to take care of your needs. You can check with your local Home Depot Professional and they can also help to get what you need. One last thing for you to think about,this is a great Generator for a RV, is about 30% less weight than others in its class.

Will this power a 20 ft. Ice Castle? As in the furnace, fridge, and lights? And AC in the summer?

Asked by Sondra December 30, 2020
1
Answer

Hi Sondra, you will have to get your owners manual and find out the wattage that you need to power all of these units. This Wen generator will power 3500 watts and will start up with 4000 watts for the surge. If you need more than the 3500 watts, check with your local Home Depot and the professionals at the store will help you find the one you need for this unit to power all your needs. Ret

Can this generator power a refrigerator with a few other small devices?

Asked by Ree October 18, 2020
2
Answers

Yes. That's exactly what we do. Refrigerator and all our computers. This is 4000 watts. A refrigerator is typically only about 700 watts.

Did WEN permanently replace the L5-30 with a TT-30 outlet ?

Asked by Anonymous October 7, 2020
1
Answer

Hi Anonymous, they have several generators with both plugs. Go to ( homedepot.com ) and check out the selection.

where do I get this junk fixed?? wen won't even answer the calls.

Asked by snowflake September 16, 2020
1
Answer

Hi Snowflake, this is the phone number they sent me with my generator ( 847-429-9263 ). You can also contact them at (customerservice@wenproducts.com ), this was also sent to me by Wen for any of my needs for service or help. Ret

What type of engine is this? Yamaha clone?

Asked by dmcginn2 September 1, 2020
1
Answer

Hi Dmcginn2, this is a Wen engine and back by their warranty, also you can get the parts from Wen. All the Wen products that I have are all made by Wen and their warranty. Ret.

Does the wen gn400i need to be grounded? Thanks

Asked by Pat August 27, 2020
1
Answer

Hi Pat, all generators need to be grounded, this protects you, the generator and the products that you are hook up to. Ret.

How well does this gen handle a max surge and max running load ? Can you get the max amp draw ...

Asked by Edge August 27, 2020
1
Answer

Hi Edge, your max surge is 4000 watts and the max running watts is 3500 watts. All generators operate on the same principal, you exceed the limits and it will shut down or trip breakers and sometimes this will harm the life of the generator. Your 20 amp. rec. will be able to handle 2400 watts only, after that your breaker will trip(A x V = W or 20 x 120 = 2400 W). Your 30 amp. rec. will handle 3600 watts ( A x V = W or 30 x 120 = 3600 W). That works on the max surge of 4000 watts for a few seconds before you generator will power down telling you to shut it down if you exceed this. You need to use the 20 amp. rec. for small loads and use the 30 amp. only for larger loads but you can only go up to 3500 watts total. You can go on line to Home Depot. Com to WEN generators and pull up the manual and it will give you a lot of items and their wattage. Remember the surge is only for the start up of certain products that needs this to start them, that will be on the manual page also to give you some of them. Ret.

Can WEN wheel kit be added to this GEN

Asked by Beetlefan August 24, 2020
1
Answer

Hi Beetlefan, this generator was designed for RV use(in a compartment or space in a RV), also for camping or power outage. It does not have brackets for wheels, it only weighs 67 lbs. A great generator for the price and design. Ret.

It s very quiet

Asked by Jose June 26, 2020
2
Answers

Medium quiet. It's not bad for an open frame generator.

RV-Ready 4000-Watt Gas-Powered Open Frame Inverter Generator, CARB Compliant - page 2

Customer Reviews

  • 4.5
    out of 50 reviews
  • 95% recommend this product
Filter by:
Showing 1-10 of 50 reviews
They seem to run good, starts easy, only used it one time but ran great.light weight, wife and I ...
They seem to run good, starts easy, only used it one time but ran great.light weight, wife and I can handle them pretty easy.
by Broncobob
Product itself is good, delivery was terrible, FedX failed to deliver near the expected date, 5 d...
Product itself is good, delivery was terrible, FedX failed to deliver near the expected date, 5 days late fails to me.
by Stibbs11
This generator is super light and easy to pick up and carry around. It would be great to take in...
This generator is super light and easy to pick up and carry around. It would be great to take in a camper because of its size. It is definitely quieter than a normal generator, but it is still a little noisy. I actually received this and I couldn't get it started. The customer service was great once I was able to speak with someone and they shipped me a new one immediately. The new one fired right up and it was perfect timing because we lost power in a storm. I was able to get the generator fired up no problem and it worked great!
by Jaime
2 people found this helpful
I like the fact that Wen gives you tools, funnel, and high altitude kits, low oil and low fuel sh...
I like the fact that Wen gives you tools, funnel, and high altitude kits, low oil and low fuel shutdown with built in overload protection. I have Wen products and they are great and the shipping box that the product comes in is above standard(look at picture). It has a eco-mode for low power usage which you will be able to run 7 hrs. plus(most generators have one speed). It has a Nema l5-30r twist lock, this will be great for camping or rv use(to keep the plug from coming out). This inverter generator gives you a lot of item to use around the home and camping. The reason i chose this generator because the weight(66 lbs.) it also starts up quick(two pulls) and the fuel shut off valve allows you to run all the gas out of the carb. They put a letter in with the generator with your name on it to check out the product and call them with any problems or thoughts(quality).
by ret
2 people found this helpful
I've been looking into an inverter generator to take on our camping trips because they're normall...
I've been looking into an inverter generator to take on our camping trips because they're normally quieter than conventional generators. I think I might have selected a larger one than what we'd need for our camping trips though as the WEN 4000-Watt Gas-Powered Open Frame Inverter Generator is nearly as loud as our larger conventional wen generator. This generator is still great though. Let than 2 gallons of gas will get you 7.5 hours of run time at half load which is more than sufficient for our camping needs. It's compact design allows for us to bring it camping as it doesn't take up much space. The Eco mode is also a nice feature as it regulates the output to match demand which also helps to quite down the unit. WEN also had a great customer support and offers a 2 year warranty. Overall you can't go wrong with this generator but take note, it's still gonna be noisy. You will need to purchase oil before you can use the unit. Either sae 30 for temps greater than 40F or synthetic 5w30 for all temp ranges.
by Uncruling99
3 people found this helpful
I got this generator/inverter to replace a larger older generator. Since I have a lot of sensitiv...
I got this generator/inverter to replace a larger older generator. Since I have a lot of sensitive electronics including a digital refrigerator I wanted to step up to the more stable electricity that an inverter style produces. I am completely pleased with this new unit. It is far quieter than my old generator. The old unit was so noisy that I always wore hearing protectors when it was running. The generator came well packed. When it was dropped off I noticed a large hole had been punched in the box. I took a picture of it in case the contents were damaged. It turns out it the hole was not a problem. The generator was completely surrounded by resilient foam padding that had protected it. In my opinion one of the impressive things about this the company, Wen, that produced this generator is their attention to customer satisfaction. On opening the box I found a personalized letter from Wen thanking me for my purchase. Even better, the accessories included two carburetor kits for high elevations, tools to remove the packing bolts and a funnel to make it easy to add the crankcase oil. It is always nice when a company includes everything you need to get up and running. I added fuel and oil and the generator started with no issues. I have so far used it to power just about everything in my house except for the range that is 240VAC. One thing that I misunderstood while reading the instructions was the choke setting for starting. While the instructions state that you need to use the choke I tried not using the choke after the unit was warmed up. It was very hard to start then I realized that there was nothing in the instructions about not using the choke when the generator was warm. As soon as I pulled the choke out it started right up. It would be helpful if the instructions made an issue of that since most small engines only use the choke when they are cold. I have not had to use it during a power failure yet but since I live on a horse ranch in the mountains and the power goes out on a regular basis I will soon get that opportunity. During a real long term power failure the fuel gauge and low oil shut down are a wonderful feature. I did buy a twist lock plug for one of my extension cords so that there would be chance of the cord vibrating loose.
by GEORGIA
2 people found this helpful
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
The generator worked great every time we used it. Followed the instructions to operate the genera...
The generator worked great every time we used it. Followed the instructions to operate the generator; 1 or 2 pulls and the generator is running. Works great with my coring drill and jack hammer out in a field installing fence.
by John
Bought to use with my RV. Great choice. ...
Bought to use with my RV. Great choice. Light enough to move. Plenty of power.
by HomeDepotCustomer
Showing 1-10 of 50 reviews