Head to head

Generac iQ3500 vs Firman WH03242

Generac iQ3500

Generac · Inverter Generator

Generac iQ3500

~$1,249

3,000 W / 3,500 W surge · up to fridge, freezer and the essentials

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Firman WH03242

Firman · Inverter Generator

Firman WH03242

~$1,280

3,200 W / 4,000 W surge · up to fridge, freezer and the essentials

Quick takeThe Generac iQ3500 lists about $31 lower; the Firman WH03242 puts out more sustained power (3,200 W); the Generac iQ3500 is quieter at 52 dB.

SpecGenerac iQ3500Firman WH03242
Approx. price~$1,249~$1,280
TypeInverter GeneratorInverter Generator
FuelGasolineDual Fuel (Gas/Propane)
Running / output watts3,000 W3,200 W
Starting / surge watts3,500 W4,000 W
Battery capacity——
Expandable to——
Noise52 dB58 dB
Runtime8.9 hrs @ 50% load, 14.1 hrs @ 25% (2.6 gal)Up to 9 hrs at 25% load on gasoline (1.8 gal tank); 58 dB at 1/4 load
Outlets1x 120V 30A (L5-30R), 2x 120V 20A (5-20R), 2x USB1x 120V 20A duplex (5-20R), 1x 120V 30A (TT-30R), 1x USB (2.1A), 1x 12V DC
Fuel tank2.6 gal1.8 gal
Weight109 lbs90 lbs
Transfer-switch readyNoNo
Warranty3-year limited3-year

Highlighted cell is the better figure for that row.

Owner pros and cons

Generac iQ3500

  • +As quiet as anything in the 3,000W class, Honda included
  • +Electric start and idiot-proof PowerDial controls
  • +Data display shows load, fuel, and time remaining
  • +Starts 13.5k BTU RV air conditioners
  • +14-hour quarter-load runtime
  • −109 lbs with no wheels, so owners add a wheel kit
  • −Carb needs religious fuel treatment before storage
  • −Past recall history on early units shadows the model
  • −No 240V output
  • −Parallel kit is proprietary and pricey

Firman WH03242

  • +Dual fuel: 3,000 running watts on propane
  • +Electric start with recoil backup
  • +TT-30R RV outlet, 20A duplex, USB and 12V DC
  • −$1,280 is above WEN and DuroMax dual fuel units with more output
  • −Firman lists 90 lbs; retailers list up to 111 lbs
  • −58 dB is a quarter-load figure
  • −1.8 gal tank gives only 9 hrs at 25% load