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WEN RV-Ready 4000-Watt Open Frame Inverter Generator (GN400i)

WEN RV-Ready 4000-Watt Open Frame Inverter Generator (GN400i)

4.3· 34 ratings

Last price we saw

$463.41last seen Nov 1

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Our take on the WEN RV-Ready 4000-Watt Open Frame Inverter Generator (GN400i)

The WEN GN400i is a 4,000-watt surge / 3,500-watt running open-frame inverter generator with a 212cc OHV engine, a 1.85-gallon tank and a built-in 120V TT-30R outlet for RV hookups. It produces clean power (under 0.3% THD at no load, under 1.2% at full load) so laptops and phones can run safely, and it weighs 66.1 lbs with a pull-cord start. It is a budget inverter rather than a quiet closed-frame unit, so expect more noise than a suitcase generator. The latest best price sits near the low end of its recent range, which makes it a strong value among 3,500-watt inverter generators.

Best forRV owners who want a TT-30R outlet without a parallel kitCampers and tailgaters on a budgetRunning laptops, phones and small electronicsBackup power for a fridge, lights and a few small appliances
Pros
  • Clean inverter output safe for sensitive electronics
  • Built-in 120V TT-30R RV outlet, no adapter needed
  • Eco-mode throttles the engine to save fuel
  • Parallel-capable with a WEN kit for more wattage
  • Low-oil and low-fuel shutdown plus overload protection
  • Two-year warranty and a nationwide service network
Cons
  • Pull-cord start only, no electric start
  • 66.1 lbs and open-frame, so it is loud and awkward to move
  • 7 hours at half load is modest for the tank size
  • Parallel cable sold separately
  • No 240V or 30A twist-lock output

WEN RV-Ready 4000-Watt Open Frame Inverter Generator (GN400i) price history

Lowest price we've seen: $463.41 on Nov 1. Tracked across 1 store since Nov 1.

What reviewers say

Owners rate it 4.3 out of 5 across 34 ratings. Most praise the clean power, the RV outlet and the price for the wattage. The common complaints are noise and the manual pull start.

Pros
  • Clean power runs electronics without issues
  • Good value for a 3,500-watt inverter
  • TT-30R outlet works directly with RV cords
  • Eco-mode stretches fuel on light loads
Cons
  • Louder than closed-frame inverter generators
  • Pull start can be hard when cold
  • Heavier than expected to lift alone

About the WEN RV-Ready 4000-Watt Open Frame Inverter Generator (GN400i)

Remember when you had clean and quiet portable power? 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-gallon tank provides over 7 hours of half-load run time. The fully-packed panel comes equipped with two three-prong 120V NEMA 5-20R receptacles, two 5V USB ports, and one 120V 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.

Specifications

color
OrangeSource
size
19.8" x 13.8" x 18.9"Source
Continuous wattage
3500WSource
Fuel type
GasolineSource

Questions and answers

Is the WEN GN400i worth it?
Yes if you need clean 3,500-watt inverter power and an RV outlet at a low price. It is louder and heavier than a closed-frame inverter, so buy it for value rather than quiet operation.
Can it run an RV air conditioner?
A small RV air conditioner with a soft-start kit is within reach of its 4,000 surge watts. Larger units or a second AC will need a parallel kit or a bigger generator.
How loud is it?
It is an open-frame inverter, so it is noticeably louder than a closed-frame suitcase generator. Expect it to be audible across a campsite, especially under load.
Does it come with a parallel cable?
No. The WEN Parallel Connection Kit is sold separately and is needed to link two GN400i units.
What is in the box?
The generator, a tool kit and an owner's manual. It ships without oil, so add oil before the first start.
When is it cheapest?
Prices on this model dip during spring and early summer sales and around major holiday promotions. The current best price is already near its recent low.
What do buyers say about the WEN RV-Ready 4000-Watt Open Frame Inverter Generator (GN400i)?
Rated 4.3 out of 5 from 34 ratings.

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Run time
7 hSource
Surge wattage
4000WSource
Outlets
5Source
Brand
WENSource
Features
Overload ProtectionSource
Motor starter type
Pull Cord StartSource
Weight
66.1 lbsSource
Rec. use
ResidentialSource
Assembled product height
13.8 inSource
Model
GN400iSource