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Firman 4550 Watt Generator - P03612

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The Firman P03612 4550 watt is ready to take on whatever work you throw at it, thanks to its strong 208cc engine that generates 3,650 watts of running power. This gas-powered portable generator is ideal for construction workers, homeowners, and anybody else who needs to power a wide variety of electrical devices.

This Firman 4,550 portable generator has a remarkable 14-hour runtime while operating at half power. The P03612 can run for hours on a full 5-gallon tank, allowing you to keep going through power outages and work at full throttle on the job site.

One of the Firman P03612's three outlets is a TT-30R receptacle, making it compatible with a wide range of recreational vehicles, so you won't need a converter to run your RV's appliances.

This backup powerhouse is risk-free and environmentally friendly since it meets EPA guidelines for lower air pollution. Note this generator is not CARB certified and so cannot be shipped to California.

Key Firman 4550 Watt Generator Features:

  • 208cc Engine: Capable of quick start-ups thanks to an electrical start as well as a remote one, the P03612 can quickly begin producing power with a remarkable 3,650 watts of running power, enough to power high-amperage power tools and household appliances.
  • 14+ Hours of Runtime: You can use this gas-powered portable generator to power your house or business for more than 14 hours on a single tank of gas, making it useful in the event of a blackout or other emergency.
  • Sleek Build: The P03612's elegant design is indisputable; it bears the brand's signature accent in a tasteful but discreet way, making it a stylish piece of engineering.
  • EPA-Certified: The EPA has approved this 4,550-watt portable generator as safe for use because it complies with all applicable regulations concerning emissions and other environmental impacts (not CARB certified).



  • Peak Watts: 4,550
  • Running Watts: 3,650
  • Peak Amps @120V: 37.9
  • Running Amps @120V: 30.4
  • Peak Amps @240V: 18.5
  • Running Amps @240V: 15.2


  • Amperage: 30.4A/15.2A
  • Voltage: AC: 120/240V 60 Hz
  • Frequency: 60Hz
  • Engine Size: 208cc
  • Engine Type: OHV 4-stroke
  • Engine Speed: 3600RPM
  • Fuel Type: Gasoline
  • Fuel Tank Capacity: 5 Gallons


  • 1x Duplex 120V 20A (5-20R)
  • 1x 120V 30A (TT-30R)
  • 1x 120V 30A (L5-30R)


  • Runtime at 50% Load: 14 Hours
  • Start Type: Electric Start/Remote/Recoil
  • Volume Level: 67dB
  • EPA-Certified: Yes
  • CARB-Certified: No
  • Product Dimensions: 24.8"L x 21.7" W x 21.7" H
  • Product Weight: 128 Lbs

The Firman P03612 is Consistent and Dependable

The operating power of 3,650 watts produced by this reliable 208cc Firman engine is more than enough for running a wide variety of heavy-duty power tools as well as small and large appliances. This compact powerhouse allows small homeowners and professionals alike to power through their tasks no matter what the situation calls for.

Protecting the unit from sudden electrical surges is essential, which is why the Firman P03612 has an automatic voltage regulator to manage power spikes. Its built-in Power Stream Alternator handles power spikes and protects the unit from being damaged in case of an unpredictable event.

Want to see more Firman generators? Shop their full range here.

Fuel Efficiency

One tank of fuel will power this Firman 4,550-watt portable generator for up to 14 hours of use. The P03612's 5-gallon gasoline tank means you can stop worrying about running out and start getting things done.

Protecting itself from potentially harmful contaminated oil, this high-powered unit alerts you when it needs more fuel and shuts down automatically if the supply gets too low.


The P03612 is always in compliance with environmental regulations that limit the release of dangerous pollutants for your protection.

This portable generator is suitable for home use since it is EPA-compliant and releases far less harmful gasses and particles.

Due to a lack of California Air Resources Board (CARB) clearance, the P03612 is not available for sale or purchase in that state.

Fully Featured Power Panel

This Firman 4550 watt model features several outlets that allow you to remain productive wherever you are. Whether you’re looking for a reliable backup option during blackouts or aim to make an impact on the job site, the P03612 portable generator delivers.

To further protect the engine against overloads, the device is equipped with circuit breakers that will shut it down immediately.

It is also safe to use in forested areas thanks to its built-in spark arrestor.

Video Overview of the P03612 4550 Watt