FIRMAN Power Equipment

FIRMAN Inverter Portable Generator 4125W Remote Start with CO Alert

Regular price $1,325.00 USD

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FIRMAN Inverter Portable Generator 4125W Remote Start with CO Alert
$1,325.00 USD
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FIRMAN Inverter Portable Generator 4125W Remote Start with CO Alert


Description

The FIRMAN W03386 is a compact, capable inverter generator built for campers, RV enthusiasts, tailgaters, and anyone who needs reliable portable power. Delivering 4,125 starting watts and 3,300 running watts, it produces clean power with less than 3% THD - safe for powering sensitive electronics like laptops, smartphones, and tablets. At just 58 decibels at quarter load, it runs quietly enough for campgrounds, neighborhoods, or wherever peace and quiet matters.

Loaded with practical features including remote start, CO Alert safety technology, and a 9-hour runtime at 25% load, this generator is engineered to be as convenient as it is dependable. Whether you're parked at a campsite, set up at a tailgate, or dealing with an unexpected power outage, the W03386 keeps you running without the hassle.


Key Features

  • 4,125 Starting / 3,300 Running Watts: Enough power to run an RV air conditioner, refrigerator, electronics, and more simultaneously.
  • CO Alert Technology: Built-in carbon monoxide detection automatically shuts down the generator if dangerous CO levels are detected, keeping you and your family safe.
  • Remote Start: Start the generator from a distance with the included remote control - no need to reach the pull cord.
  • Inverter Technology - Under 3% THD: Produces clean, stable power safe for laptops, phones, tablets, and other sensitive electronics.
  • 58 dB at Quarter Load: Whisper-quiet operation suitable for campgrounds, RV parks, and residential use.
  • Up to 9-Hour Runtime: Runs up to 9 hours on a single 1.8-gallon tank at 25% load for extended use between fill-ups.
  • Multiple Outlets: Features a 5-20R 120V duplex, a TT-30R RV-ready 30A twist-lock outlet, USB-A port, and a 12V DC power port for versatile connections.
  • Parallel-Ready: Two parallel ports allow you to connect a second compatible FIRMAN inverter generator for doubled output when you need more power.
  • 193cc Engine with Cast Iron Sleeve: Heavy-duty engine construction for long-lasting durability and reliable starts in any condition.
  • 3-Year Warranty: Backed by FIRMAN's industry-leading warranty with U.S.-based customer support 7 days a week.

Shipping

Ships free! Please email us at service@omahasportsandgames.com for a delivery ETA or to confirm shipping details.


What's Included

  • FIRMAN W03386 Inverter Portable Generator
  • Engine oil bottle
  • Oil funnel
  • Spark plug wrench
  • Screwdriver
  • 12V battery cable
  • Remote control
  • Float charger
  • Quick oil drain

Why You'll Love It

FIRMAN generators are engineered in the USA and built to endure everything from cold winter nights to scorching summer days - conditions that would sideline lesser machines. The W03386 strikes the rare balance between portability and performance, giving you real wattage in a package that weighs just 91 lbs and rolls on flat-free wheels. Remote start and CO Alert make it as user-friendly as it is safe, so you spend less time worrying about your power source and more time enjoying whatever adventure brought you here. The TT-30R RV outlet makes hookup effortless for RV owners, and the parallel capability means you can grow your power output as your needs grow. Trusted by outdoor enthusiasts and prepared households across the country, the W03386 is the kind of generator you buy once and rely on for years.


Product Specifications

View Product Specs
Running Watts 3,300W
Starting Watts 4,125W
AC Voltage 120V
Frequency 60 Hz
Decibels 58 dB @ 1/4 load
THD @ Full Load 3%
Run Time Up to 9 hours @ 25% load
Engine Displacement 193cc
Fuel Type Gasoline
Tank Size 1.8 gallons
Start Type Recoil / Electric / Remote
Outlets (1) 5-20R 120V 20A Duplex, (1) TT-30R 120V 30A Twist-Lock, (1) USB-A (2.1A/5V), (1) 12V DC Port (8.3A/100W)
Parallel Ports 2
Cast Iron Sleeve Yes
Low Oil Shutoff Yes
CO Alert Yes
Unit Dimensions 23.2" x 17.8" x 17.9"
Unit Weight 91 lbs
Carton Weight 104 lbs
Wheels 5.5" flat-free plastic wheels
Handle U-shape folding handle
Certifications CARB, EPA, cETL
Warranty 3-year limited warranty
UPC 840876133866

Manuals & Guides

FAQ

What is CO Alert and why does it matter?

CO Alert is FIRMAN's built-in carbon monoxide detection system. If the generator senses dangerously elevated CO levels in the surrounding area, it automatically shuts down to prevent exposure. This is a critical safety feature, especially when using the generator near enclosed spaces like camper vans, tents, or garages. Never run any generator indoors, but CO Alert adds an important layer of protection when operating in semi-enclosed or poorly ventilated environments.

Is this generator safe to use with sensitive electronics?

Yes. As an inverter generator, the W03386 produces clean power with less than 3% total harmonic distortion (THD). This is well within the safe range for laptops, smartphones, tablets, CPAP machines, and other electronics that require stable, clean power. A standard open-frame generator would not offer this level of power quality.

Can this generator power an RV air conditioner?

Yes, for most RV air conditioners rated at 13,500 BTU or lower. The TT-30R 30-amp twist-lock outlet is specifically designed for RV hookup, and the 4,125 starting watts provide enough surge capacity to start a typical RV AC unit. For larger or dual AC setups, you may want to use the parallel capability to connect a second compatible FIRMAN inverter generator.

How does the remote start work?

The included remote control lets you start and stop the generator wirelessly from a distance. This is especially convenient when the generator is stored in a compartment or you'd rather not walk outside in bad weather. The generator must be properly set up and fueled before using the remote - it simply replaces the need to manually pull the recoil cord or press the electric start button.

What does "parallel capable" mean and how do I use it?

Parallel capability means you can connect two compatible FIRMAN inverter generators together using a parallel kit (sold separately) to combine their output. This effectively doubles your available wattage, which is useful if you need more power than a single unit provides. The W03386 has two parallel ports built in for this purpose.

Does this generator require assembly? How does it ship?

The generator arrives boxed via ground freight and requires minimal setup - attaching the handle and wheels, adding the included engine oil, and following the quick-start guide before first use. No complex assembly is required. Please email us at service@omahasportsandgames.com for specific delivery ETA or freight questions.


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