Black and yellow FIRMAN Power Equipment Inverter Portable Generator 4125W with remote start and CO ALERT, featuring control panel, wheels, and carry handle—a quiet generator perfect for RV camping or emergency use.
The FIRMAN Power Equipment Inverter Portable Generator 4125W offers remote start, CO Alert, a 1.8-gallon tank, five outlets, parallel operation, and quiet performance—making it ideal for RV use.
Image of the FIRMAN Power Equipment Inverter Portable Generator 4125W Remote Start with CO ALERT, featuring icons and text for included accessories: tool kit, engine oil, oil funnel, charger cable, float charger, remote holder, remote & manual.
Labeled diagram of FIRMAN Power Equipment’s Inverter Portable Generator 4125W Remote Start with CO ALERT control panel, showing numbered controls, output ports, and indicator lights on a yellow and black background.
Diagram of the FIRMAN Power Equipment Inverter Portable Generator 4125W Remote Start with CO ALERT, with icons showing it powers a portable AC, power tools, RV camping gear, appliances, a smartphone, and a laptop.
Close-up of FIRMAN Power Equipment’s Inverter Portable Generator 4125W Remote Start with CO ALERT beside a shield graphic stating “3 Year Warranty,” highlighting the generator’s three-year warranty.
The FIRMAN Power Equipment Inverter Portable Generator 4125W with remote start and CO ALERT measures 17.8”H x 17.4”W x 23.1”L, weighs 91 lbs, and is a quiet option ideal for camping or RV use.
Infographic titled "What Size Generator Do You Need?" explains four steps to calculate wattage, highlighting total running and starting watts—perfect for selecting the FIRMAN Power Equipment Inverter Portable Generator 4125W Remote Start with CO ALERT.
A FIRMAN Power Equipment Inverter Portable Generator 4125W with CO ALERT and remote start is shown outside near a camper van, with "GAS FUELED" in bold yellow text above the generator.
The FIRMAN Power Equipment Inverter Portable Generator 4125W with Remote Start and CO ALERT sits on the grass near a white caravan with an open door and two chairs, set in a green, wooded area.
The FIRMAN Power Equipment Inverter Portable Generator 4125W with CO ALERT and remote start, featuring yellow accents, outlets, control panels, and wheels, sits outdoors—perfect as a quiet generator for camping or RV use.
A FIRMAN Power Equipment Inverter Portable Generator 4125W with remote start and CO ALERT sits quietly on the ground outside a cabin in a wooded area, surrounded by trees and pine needles.
Black and yellow FIRMAN Power Equipment Inverter Portable Generator 4125W with remote start and CO ALERT, featuring control panel, wheels, and carry handle—a quiet generator perfect for RV camping or emergency use.
The FIRMAN Power Equipment Inverter Portable Generator 4125W offers remote start, CO Alert, a 1.8-gallon tank, five outlets, parallel operation, and quiet performance—making it ideal for RV use.
Image of the FIRMAN Power Equipment Inverter Portable Generator 4125W Remote Start with CO ALERT, featuring icons and text for included accessories: tool kit, engine oil, oil funnel, charger cable, float charger, remote holder, remote & manual.
Labeled diagram of FIRMAN Power Equipment’s Inverter Portable Generator 4125W Remote Start with CO ALERT control panel, showing numbered controls, output ports, and indicator lights on a yellow and black background.
Diagram of the FIRMAN Power Equipment Inverter Portable Generator 4125W Remote Start with CO ALERT, with icons showing it powers a portable AC, power tools, RV camping gear, appliances, a smartphone, and a laptop.
Close-up of FIRMAN Power Equipment’s Inverter Portable Generator 4125W Remote Start with CO ALERT beside a shield graphic stating “3 Year Warranty,” highlighting the generator’s three-year warranty.
The FIRMAN Power Equipment Inverter Portable Generator 4125W with remote start and CO ALERT measures 17.8”H x 17.4”W x 23.1”L, weighs 91 lbs, and is a quiet option ideal for camping or RV use.
Infographic titled "What Size Generator Do You Need?" explains four steps to calculate wattage, highlighting total running and starting watts—perfect for selecting the FIRMAN Power Equipment Inverter Portable Generator 4125W Remote Start with CO ALERT.
A FIRMAN Power Equipment Inverter Portable Generator 4125W with CO ALERT and remote start is shown outside near a camper van, with "GAS FUELED" in bold yellow text above the generator.
The FIRMAN Power Equipment Inverter Portable Generator 4125W with Remote Start and CO ALERT sits on the grass near a white caravan with an open door and two chairs, set in a green, wooded area.
The FIRMAN Power Equipment Inverter Portable Generator 4125W with CO ALERT and remote start, featuring yellow accents, outlets, control panels, and wheels, sits outdoors—perfect as a quiet generator for camping or RV use.
A FIRMAN Power Equipment Inverter Portable Generator 4125W with remote start and CO ALERT sits quietly on the ground outside a cabin in a wooded area, surrounded by trees and pine needles.
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Certification: Certification CARB Certification cETL Certification EPA
Model: w03386

Inverter Portable Generator 4125W Remote Start with CO ALERT
$1,319.99 USD
Free Shipping on all Generators

The FIRMAN W03386 portable inverter generator delivers clean, renewable energy with quiet, fuel-efficient performance—ideal for powering sensitive electronics like laptops, smartphones, and tablets. With 4,125 starting watts and 3,300 running watts, this generator is a reliable choice for RV living, camping trips, tailgating, or recreational use.

Equipped with advanced CO Alert technology and remote start, the W03386 prioritizes safety and ease of use, giving you peace of mind and convenience at the push of a button. It runs at 120V and provides up to 9 hours of runtime at 25% load, ensuring long-lasting performance on a single tank.

Whether you're powering up your RV, setting up for a weekend tailgate, or looking for a portable power solution off the grid, the W03386 delivers dependable performance with whisper-quiet operation.

Quiet. Efficient. Reliable. The FIRMAN W03386 is your trusted companion for portable power wherever life takes you.

The W03386 comes with an engine oil bottle, oil funnel, spark plug wrench, screwdriver, 12V battery cable, remote control, floater charger, and quick oil drain.

LEGENDARY FIRMAN ENGINEERING

  • 193cc engine
  • Recoil start
  • Electric start
  • Remote start
  • Low oil shut off
  • Cast iron sleeve
  • Running watts 3300W 
  • Starting watts 4125W
  • 120 volts

PERFORMANCE IN A LEAGUE OF ITS OWN

  • Up to 9 hours of runtime at 25% load
  • 1.8-gallon tank
  • Weight: 104 lbs
  • 58dB at ¼ load

FEATURES YOU EXPECT FROM FIRMAN

3-year warranty

Multi-featured control panel with covered outlets

  • (1) 5-20R 120V 20A DUPLEX
  • (1) TT-30R 120V 30A TWISTLOCK (27.5A/120V/3300W)
  • (1) USB-A (2.1A/5V DC/10W)
  • (1) 12V DC Power Port/Plug (8.3A/12V DC/100W)
ENGINEERED IN THE USA

Los generadores FIRMAN están hechos para soportar todas las condiciones, desde las frías noches de invierno hasta los calurosos días de verano y todo lo demás.

Industry-Leading Warranty

Ofrecemos una garantía de 3 años en todos los generadores portátiles FIRMAN y disponibilidad inmediata de piezas de repuesto.

Customer Support

Nuestros técnicos especializados ubicados en Peoria, AZ están disponibles los 7 días de la semana para proporcionarle el apoyo que necesita cuando más lo necesita.

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Manuals

W03386 Quick Start / Stop Guide English

download

W03386 Quick Start / Stop Guide Spanish

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W03386 Quick Start / Stop Guide French

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W03386 Manual English

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W03386 Manual French

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W03386 Manual Spanish

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Watch

CO Alert Overview

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W03386 Overview

Watch

W03386 Maintenance

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W03386 Unboxing

@FIRMANpowerequipment
Image of a Woman holding a handle to an Inverter Generator and walking towards a pick up truck and trailer cart.
An image of a woman uncovering her FIRMAN Generator that is on her truck bed.
A man shows off his FIRMAN Accessories and Inverter Generator collection.
Image of a woman lifting her FIRMAN Inverter Generator with it's U-Shaped Handle
Image of a man holding a cup of coffee in the woods with a FIRMAN Power Generator that is connected to a power cord.
A FIRMAN generator is sitting on the bed of a white pick up truck. The truck is parked against a concrete wall.
Image of a small dog and a FIRMAN Inverter Generator with a suitcase handle, outside on a camping ground.
Image of a man sitting on FIRMAN Power Generator boxes and holding a small Inverter generator.