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WEN DF680iX Dual Fuel Inverter Generator vs Generac iQ3800 Dual Fuel Inverter Generator

The Generac iQ3800 is the better pick for most shoppers: it has a stronger owner record (4.3 from 396 ratings versus 3.9 from 48), longer run times, and an LED display that shows output and fuel use. The WEN DF680iX wins on raw power, with 5100 rated watts on gas and 4500 on propane against 3000 and 2700, plus 240V output and lower total harmonic distortion. Build-wise the Generac is heavier at 107 lbs but has a fully enclosed case and never-flat wheels; the WEN is lighter at about 95 lbs and has a fuel shutoff that helps prevent carburetor buildup.

  • Choose the WEN DF680iX if you need to run a transfer switch, a welder, or a large RV air conditioner, or you want 240V and the cleanest sine wave for sensitive gear.
  • Choose the Generac iQ3800 if you want longer run times, a proven track record with hundreds of owners, and an LED display that shows load and fuel use.

Prices

  • WEN DF680iX Dual Fuel Inverter Generator: $599.00 at eBay (checked today)
  • Generac iQ3800 Dual Fuel Inverter Generator: $849.00 at Lowe's (checked today)
  • Difference: the WEN DF680iX Dual Fuel Inverter Generator is $250.00 cheaper than the Generac iQ3800 Dual Fuel Inverter Generator today
WEN
WEN DF680iX

WEN DF680iX Dual Fuel Inverter Generator

WEN DF680iX

3.9(48 ratings)
$599.00at eBayVerified
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Pros
  • High output for its class: 5100 rated watts on gas, 4500 on propane
  • 240V outlet supports transfer switches and heavier loads
  • Very clean power, under 1.2% THD at full load
  • Fuel shutoff runs the carburetor dry to prevent buildup
  • Lighter than the Generac at about 95 lbs
Cons
  • Shorter run time: 9 hours on a 20 lb propane tank at half load
  • No LED load or fuel-consumption display
  • Smaller owner base and lower average rating
  • 120V/240V outlets only, no USB ports listed
Generac
Generac iQ3800 Duel Fuel Inverter Generator

Generac iQ3800 Dual Fuel Inverter Generator

Generac iQ3800 Duel Fuel Inverter Generator

4.3(396 ratings)
$849.00at Lowe'sObserved at 1:34 PM
See all prices and details
Visit Lowe's

Store links may earn us a commission. Price via Klarna.

Pros
  • Long run times: 13 hours on gas, 16 on propane at half load
  • COsense CO shutdown and low-oil shutdown
  • Push-button electric start with auto-choke and battery included
  • LED display shows power output and fuel consumption
  • Strong owner feedback: 4.3 from 396 ratings
Cons
  • Lower output: 3000 rated watts on gas, 2700 on propane
  • 120V only, so no transfer-switch or 240V loads
  • Heavier at 107 lbs
  • THD under 3%, clean but not as clean as the WEN

What separates them

WEN DF680iX Dual Fuel Inverter GeneratorGenerac iQ3800 Dual Fuel Inverter Generator
Rated watts on gasoline5100 W3000 W
Rated watts on propane4500 W2700 W
Run time at half load9 hours on a 20 lb propane tank13 hours on gas, 16 hours on a 20 lb propane tank
Voltage120V and 240V120V only
Total harmonic distortionUnder 0.3% at no load, under 1.2% at full loadUnder 3%
Weight94.8 lbs107 lbs
Display and monitoringFuel gauge onlyLED display shows power output and fuel consumption
Owner ratings3.9 out of 5 from 48 ratings4.3 out of 5 from 396 ratings

Price history

$849.00$798.00
Nov 3Nov 9
  • WEN DF680iX Dual Fuel Inverter Generator: lowest $798.00 on Nov 5 at Amazon; $798.00 on Nov 9.
  • Generac iQ3800 Dual Fuel Inverter Generator: lowest $849.00 on Nov 3 at Walmart; $849.00 on Nov 9.

Prices at every store

WEN DF680iX Dual Fuel Inverter Generator

  • Home DepotNew

    In stock

    $798.00Free shippingObserved at 1:36 PM
    Visit Home Depot
  • eBayNew

    Availability unknownSold by littlegemsmarketltd (99.5% positive, 982 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $599.00Free shippingVerified
    Visit eBay
  • WalmartNew

    Availability unknown

    $798.00Verified
    Visit Walmart
  • Lowe'sNew

    Availability unknown

    $798.00Free shippingObserved at 1:36 PM
    Visit Lowe's

Also available at

  • WEN ProductsCheck price at WEN Products
  • eBayCheck price at eBay

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All 13 stores and price history →

Generac iQ3800 Dual Fuel Inverter Generator

  • Blain's Farm & FleetNew

    In stock

    $849.00Observed at 1:34 PM
    Visit Blain's Farm & Fleet
  • Lowe'sNew

    In stock

    $849.00Free shippingObserved at 1:34 PM
    Visit Lowe's
  • FactoryPureNew

    In stock

    $928.00Free shippingObserved at 12:49 PM
    Visit FactoryPure
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $849.00Observed at 12:49 PM
    Visit Amazon

Also available at

  • WalmartCheck price at Walmart

Store links may earn us a commission. Some prices via Klarna.

All 21 stores and price history →

Specs compared

SpecWEN DF680iX Dual Fuel Inverter GeneratorGenerac iQ3800 Dual Fuel Inverter Generator
Inverter TechnologyYesYes
CO SensorYes (WEN Watchdog CO Shutdown Sensor)Yes (COsense® Technology)
Low Oil ShutdownYesYes
Overload ProtectionYesHelps you to avoid overloading (via LED display)
Automatic Shut OffYes (Fuel shutoff), Yes (low-fuel), Yes (low-oi…STOPS (COsense® Technology)
Fuel TypeGasoline, Dual Fuel, PropaneDual Fuel, Gasoline
Fuel Capacity2.9-gallon3.2 gal
Fuel GaugeYesYes (for the gasoline tank), No (for propane)
Continuous Output5100 rated watts (gasoline)3000 W
Power Output6800 watts3800 W (Starting Watts)
Voltage120V/240V120-volt
Peak Output6800 surge watts (gasoline)3800 W
Show all 40 specsShow fewer specs
SpecWEN DF680iX Dual Fuel Inverter GeneratorGenerac iQ3800 Dual Fuel Inverter Generator
Starting MethodRecoil starterElectric Start / Recoil Pull Start
Frequency60 Hz60Hz (target)
Number Of Outlets55 (120-volt outlets)
Receptacle TypeTT-30R, 5-20RTwist lock (120V, 30-amp)
Weight94.8 lbs107
Depth22.8 in24.6 in
Height19.7 in22.4 in
Width16.6 in20.3 in
Engine displacement224cc212cc

What reviewers say

WEN DF680iX Dual Fuel Inverter Generator

  • 3.9 / 548 ratings

Buyers of the DF680iX series generally like the dual fuel flexibility and quiet inverter output, but the 3.9 out of 5 average reflects complaints about starting and reliability.

What people mention
  • StartingCriticisedSome owners report hard starting or stalling, and the unit uses a recoil pull start.
  • Dual fuelPraisedBuyers value running on propane when gasoline is unavailable.
  • NoisePraisedOwners find it quieter than standard generators at light loads.
  • WeightMixedThe wheels help, but 94.8 lbs is still hard to lift alone.

Generac iQ3800 Dual Fuel Inverter Generator

  • 4.3 / 5396 ratings

Owners of Generac inverter generators generally praise the quiet inverter output and the dual-fuel flexibility, and the CO shutdown is seen as a real safety plus. Complaints tend to center on weight and on the lower output when running on propane.

What people mention
  • WeightCriticisedOwners say 107 lb makes it a two-person lift and awkward to move without wheels.
  • Dual fuelPraisedBuyers like having propane as a fallback when gasoline runs out or is hard to store.
  • Power qualityPraisedUnder 3% THD is cited as safe for laptops, TVs and other sensitive electronics.
  • CO safetyPraised

Questions and answers

Which one runs a 30-amp RV or a transfer switch?
The WEN DF680iX. It has a TT-30R outlet and 240V output with 5100 rated watts on gas, which the 120V-only Generac cannot match.
Which is quieter?
Both are inverter units with enclosed cases. The WEN is rated 64 dB at quarter load; Generac does not publish a dB figure for the iQ3800, and owners describe it as very quiet.
Which lasts longer on a tank?
The Generac. It runs 13 hours on gas and 16 hours on a 20 lb propane tank at half load, against 9 hours on propane for the WEN.
Is the Generac worth stepping up to?
Yes for most home and camping use. You give up about 2000 rated watts but gain longer run times, a load display, and a much larger record of satisfied owners.
Can either run sensitive electronics?
Both can. The WEN is cleaner at under 1.2% THD at full load; the Generac is under 3%, which is still safe for laptops, phones and TVs.
Do both shut off for carbon monoxide?
Yes. The WEN uses its Watchdog CO Shutdown Sensor and the Generac uses COsense. Both also have low-oil shutdown.

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Buying guides that pick them

  • Best dual fuel inverter generators for home backup and camping
  • Best portable dual fuel generators
Fuel tank capacity
2.9-gallon
3.28 (12.4)
Runtime9 hours (half-load run time on a 20-pound LPG t…—
ProtectionOverload protection—
Noise Level64 dB (at quarter load)—
Gasoline surge watts6800 surge watts—
Gasoline rated watts5100 rated watts—
Propane surge watts6000 surge watts—
Propane rated watts4500 rated watts—
Gasoline run timeup to 6.1 hours of half-load run time—
Propane run time9 hours half-load run time on a 20-pound LPG ta…—
Length57.9 cm—
Electric StartYes—
Power SourceGasoline, Gas—
Output Power (W)6800—
Voltage (V)240.0—
No. of Power Outlets4—
Voltage Outlet2x120 V, 120 V, 240 V—
Weight (lb)94.8—
Running Watts—3000 (Gas) / 2700 (LP)
The COsense auto shutoff is mentioned as a reassuring feature for indoor-adjacent use.