Generac iQ3800 DF

Last updated: October 22, 2026

Generac iQ3800 DF
4.0/5#2 of 16 in mid-size generators
4.0

A dual-fuel mid-size inverter with long run time and electric start, suited to home essentials and jobsites. RV owners will need an L5-30 adapter for the 30 A outlet.

  • 3,000 / 3,800 WRunning / starting
  • Gasoline, propaneFuel
  • 20 hr at 25% loadRun time
  • 107 lbWeight
  • $0.28Price / W
Check price at Amazon$849

Price checked October 22, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Refills from a 20 lb propane tank, which stores far longer than gasoline
  • Runs most of a day and night on a tank at light load
  • Push-button start with automatic choke
  • Shuts itself off if carbon monoxide builds up nearby
  • GFCI outlets add shock protection on wet sites
Cons
  • No TT-30R; a travel trailer needs an L5-30 to TT-30 adapter
  • Over 100 lb, so it needs its wheels rather than being lifted

How it scores

The rating comes from 7 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.

Specifications

Model numberiQ3800 DF (G0089440, 49-state)
Output
Gasoline3,000 W running, 3,800 W starting
Propane2,700 W running, 3,400 W starting
Outlets4 × 120 V, L5-30, USB
Parallel capableYes
Total harmonic distortionunder 3%
Price per watt$0.28
Fuel and run time
FuelGasoline, propane
Tank3.3 gal
Run time (gasoline)20 hr at 25% load
Run time (propane, 20 lb tank)19 hr
Engine212 cc
Noise and safety
CO shutoffYes
Build
StartingElectric and recoil
AppNo
WheelsYes
Dimensions24.6 x 20.3 x 22.4 in
Weight107 lb
Warranty3 years

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