Generac GP6700E Dual Fuel

Last updated: October 28, 2026

Generac GP6700E Dual Fuel
4.3/5#6 of 14 in mid-size portable generators
4.3

A mid-size dual-fuel generator for home backup at a low price, for buyers who want propane as a fallback. The 50-state fuel-injected model costs more.

  • 6,700 / 8,250 WRunning / starting
  • Gasoline, propaneFuel
  • 11 hr at 50% loadRun time
  • Yes, 240 VTransfer switch
  • 174.2 lbWeight
  • $0.13Price / W
Check price at Amazon$899

Price checked October 28, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Runs on gasoline or propane, and switches fuel without shutting down
  • Propane stores for years, so it is ready for an outage without stale gas
  • L14-30R outlet connects to a 240 V transfer switch
  • Push-button start, and shuts itself off if carbon monoxide builds up
Cons
  • A 20 lb propane tank lasts about 6 hours at half load
  • Generac publishes no product page or full spec sheet for this version
  • Not sold in California in this version

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 numberGP6700E DF 49ST (G0080623)
Output
Gasoline6,700 W running, 8,250 W starting
Propane6,000 W running, 7,425 W starting
OutletsL14-30
Transfer switch readyYes, 240 V
Full power at 120 VNo
Price per watt$0.13
Fuel and run time
FuelGasoline, propane
Tank7.5 gal
Run time (gasoline)11 hr at 50% load
Run time (propane, 20 lb tank)6 hr
Engine340 cc
Noise and safety
CO shutoffYes
CARB compliantNo
Build
StartingElectric and recoil
WheelsYes
Weight174.2 lb

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