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WEN GN400iM RV-Ready 4000-Watt Open Frame Inverter Generator

WEN GN400iM RV-Ready 4000-Watt Open Frame Inverter Generator

4.5(50 ratings)

Best price now

$374.99at WEN ProductsChecked Nov 9

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Price facts

  • Last seen at $374.99 at WEN Products on Nov 9.

Our take on the WEN GN400iM RV-Ready 4000-Watt Open Frame Inverter Generator

The WEN GN400iM is an open-frame inverter generator rated at 3,500 running watts with 4,000 watts of surge. Its 212cc engine feeds an inverter that holds total harmonic distortion under 0.3% at no load and under 1.2% at full load, so laptops, TVs and phones can run off it safely. It has a 30A RV outlet, two household outlets and two USB ports, and it weighs about 30% less than a standard 4,000-watt generator. It suits RV owners and campers who want a TT-30R plug without paying for a fully enclosed, quieter inverter unit. Against closed-frame rivals it is louder and more exposed, but it is lighter and simpler to service. Owners rate it 4.5 out of 5 across 50 ratings.

Best forRV owners who need a 30A TT-30R outletCampers and tailgaters running electronicsHome backup for a fridge, lights and routerBuyers who want a light open-frame inverter
Pros
  • Clean inverter power safe for sensitive electronics
  • 30A RV-ready TT-30R outlet built in
  • About 30% lighter than a standard 4,000-watt generator
  • Eco-mode throttles the engine to save fuel
  • Over seven hours at half load on 1.85 gallons
  • Two-year warranty and parallel-ready panel
Cons
  • Open frame is louder than enclosed inverter models
  • No electric start; pull start only
  • Parallel kit sold separately
  • 1.85-gallon tank means frequent refills under heavy load

WEN GN400iM RV-Ready 4000-Watt Open Frame Inverter Generator prices at every store

  • WEN ProductsNew

    In stockReturn policy

    $374.99Checked Nov 9
    Visit WEN Products

Also available at

  • Big Buy07Check price at Big Buy07
  • Prime Wise10Check price at Prime Wise10
  • RomavelleCheck price at Romavelle
  • Orbit Cart 14Check price at Orbit Cart 14
  • cloudshiftsolCheck price at cloudshiftsol

What reviewers say

  • 4.5 / 550 ratings

Owners rate it highly, praising the clean power, the RV outlet and the light weight for a 4,000-watt unit. Complaints center on noise from the open frame and on fuel capacity under load.

What people mention
  • NoiseCriticisedOwners say the open frame makes it louder than enclosed inverter generators.
  • Power qualityPraisedReviewers report clean output that runs laptops, TVs and phones safely.
  • WeightPraisedBuyers like that it is noticeably lighter than a standard 4,000-watt generator.
  • FuelMixedHalf-load run time is good, but the small tank means refills under heavy load.
  • StartingMixedIt starts reliably, though the pull start takes some effort.
  • RV outletPraisedThe TT-30R outlet is a draw for travel trailer owners.

From WEN Products

  • Clean power safe for sensitive electronics like phones, tablets, TVs and computers
  • Parallel-ready panel connects any 2 WEN inverter generators for more wattage
  • 212cc 4-stroke engine produces 4,000 surge watts and 3,500 rated watts
  • Lightweight body weighs 30% less than a standard 4000-watt generator
  • Two 120V NEMA 5-20R receptacles, two 5V USB ports and one 120V RV-ready TT-30R receptacle
  • Total harmonic distortion under 0.3% at no load and under 1.2% at full load
Guarantee
Two-year warranty backed by a nationwide network of skilled service technicians and a friendly customer help line.
Shipping
Free shipping on purchases over a threshold for the entire contiguous United States.

About the WEN GN400iM RV-Ready 4000-Watt Open Frame Inverter Generator

The WEN GN400iM is a 4,000-watt open frame inverter generator with a 212cc 4-stroke engine. It produces 4,000 surge watts and 3,500 rated watts. Its body weighs 30% less than a standard 4000-watt generator.

The generator is designed to mirror a pure sine wave. Total harmonic distortion stays under 0.3% at no load and under 1.2% at full load. This makes the power safe for sensitive electronics such as phones, tablets, TVs, laptops and computers.

The 1.85-gallon tank gives over seven hours of run time at half load. An eco-mode switch lets the engine adjust its fuel use automatically as items are plugged in and unplugged. Low-oil and low-fuel automatic shutdown, built-in overload protection and indicator lights help protect the generator and connected devices.

Surge power
4,000 watts
Rated power
3,500 watts
Voltage
120 volts AC
Engine
212cc 4-stroke
Fuel tank
1.85 gallons
Run time
Over seven hours at half load
Outlets
2 x 120V NEMA 5-20R, 1 x 120V RV-ready TT-30R
USB ports
2 x 5V
Harmonic distortion
Under 0.3% at no load, under 1.2% at full load
Parallel use
Parallel-ready panel; connects 2 WEN inverter generators with a Parallel Connection Kit (sold separately)
Safety features
Low-oil shutdown, low-fuel shutdown, overload protection, indicator lights
Fuel economy
Eco-mode switch

Specifications

Surge wattage
4,000 surge wattsSource
Rated wattage
3,500 rated wattsSource
Engine
212cc 4-stroke engineSource
Fuel tank capacity
1.85-gallon tankSource

Questions and answers

Is it safe for laptops and TVs?
Yes. The inverter limits total harmonic distortion to under 0.3% at no load and under 1.2% at full load, which is clean enough for sensitive electronics.
Can it run an RV air conditioner?
A 3,500-watt running rating with 4,000 surge handles many smaller RV air conditioners, but check your unit's surge draw. Two units can be paralleled with a WEN kit for more power.
How loud is it?
It is an open-frame generator, so it is louder than enclosed inverter models. Eco-mode lowers engine speed and noise when the load is light.
Does it come with a parallel kit?
No. The panel is parallel-ready, but the WEN Parallel Connection Kit is sold separately.
What outlets does it have?
Two 120V NEMA 5-20R household outlets, one 120V TT-30R RV outlet and two 5V USB ports.
How long does it run on a tank?
Over seven hours at half load on the 1.85-gallon tank. Run time drops as the load rises.
Where is the WEN GN400iM RV-Ready 4000-Watt Open Frame Inverter Generator cheapest?
At WEN Products, for $374.99, as of our latest check.
What do buyers say about the WEN GN400iM RV-Ready 4000-Watt Open Frame Inverter Generator?
Rated 4.5 out of 5 from 50 ratings.
Where can I buy the WEN GN400iM RV-Ready 4000-Watt Open Frame Inverter Generator?
6 stores we checked sell it, including WEN Products, Big Buy07, Prime Wise10, Romavelle, Orbit Cart 14.

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Weight
30% less than a standard 4000-watt generator
Warranty
Two years
Half-load run time
over seven hoursSource
Parallel capability
Parallel-ready panelSource
Weight
30% less than a standard 4000-watt generatorSource
Warranty
two-year warrantySource
Voltage
120 volts_of_alternating_currentSource
Color
橙色Source
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