Certainly! Here’s a rewritten version of your sentence using the product data: The FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 4400/3500 Watt features electric start, a convenient control panel with outlets, parallel readiness, and a carrying handle—all clearly labeled ‘4400’ on the front. Reliable and versatile for RV use or wherever portable power is required, this generator also includes CO Alert for added safety.
A black and yellow graphic displays the FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 4400/3500 Watt Electric Start 120V Parallel Ready CO Alert, highlighting labeled features including tank size, multiple outlets, electric start, CO alert, and economy modes on a yellow background.
The FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 4400/3500 Watt Electric Start 120V Parallel Ready CO Alert comes complete with essential accessories such as a tool kit, engine oil, oil funnel, battery charger cable, regulator hose assembly, and an L5-30P to TT-30R adapter—making it the ideal RV generator solution.
Labeled diagram of the FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 4400/3500 Watt Electric Start 120V Parallel Ready CO Alert control panel, featuring numbered components and corresponding descriptions below for functions such as USB ports, engine start, and power output.
Close-up of the FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 4400/3500 Watt Electric Start 120V Parallel Ready CO Alert control panel, featuring a highlighted CO Alert indicator light with text describing its role in warning users of carbon monoxide presence or system malfunctions.
A FIRMAN Power Equipment Tri Fuel Inverter Portable Generator (4400/3500 Watt, Electric Start, 120V Parallel Ready CO Alert) with icons and text highlighting its ability to power appliances, power tools, RVs, smartphones, laptops, and portable ACs.
A FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 4400/3500 Watt Electric Start 120V Parallel Ready CO Alert is displayed beside text featuring a 3-year limited warranty and lifetime USA-based technical support.
Blue and black FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 4400/3500 Watt Electric Start displayed on a yellow background, with product label and control panel clearly visible for easy operation. This portable generator weighs 52 lbs and measures 18.2″ tall, 12.7″ wide, and 18.3″ deep. It features tri-fuel capability, parallel readiness, CO Alert for safety, and delivers reliable power in any setting.
Infographic titled “What Size Generator Do You Need?” outlines four steps for calculating generator wattage, featuring an image of the FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 4400/3500 Watt Electric Start 120V Parallel Ready CO Alert on the right.
Certainly! Here’s a rewritten version of your sentence using the product data: The FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 4400/3500 Watt features electric start, a convenient control panel with outlets, parallel readiness, and a carrying handle—all clearly labeled ‘4400’ on the front. Reliable and versatile for RV use or wherever portable power is required, this generator also includes CO Alert for added safety.
A black and yellow graphic displays the FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 4400/3500 Watt Electric Start 120V Parallel Ready CO Alert, highlighting labeled features including tank size, multiple outlets, electric start, CO alert, and economy modes on a yellow background.
The FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 4400/3500 Watt Electric Start 120V Parallel Ready CO Alert comes complete with essential accessories such as a tool kit, engine oil, oil funnel, battery charger cable, regulator hose assembly, and an L5-30P to TT-30R adapter—making it the ideal RV generator solution.
Labeled diagram of the FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 4400/3500 Watt Electric Start 120V Parallel Ready CO Alert control panel, featuring numbered components and corresponding descriptions below for functions such as USB ports, engine start, and power output.
Close-up of the FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 4400/3500 Watt Electric Start 120V Parallel Ready CO Alert control panel, featuring a highlighted CO Alert indicator light with text describing its role in warning users of carbon monoxide presence or system malfunctions.
A FIRMAN Power Equipment Tri Fuel Inverter Portable Generator (4400/3500 Watt, Electric Start, 120V Parallel Ready CO Alert) with icons and text highlighting its ability to power appliances, power tools, RVs, smartphones, laptops, and portable ACs.
A FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 4400/3500 Watt Electric Start 120V Parallel Ready CO Alert is displayed beside text featuring a 3-year limited warranty and lifetime USA-based technical support.
Blue and black FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 4400/3500 Watt Electric Start displayed on a yellow background, with product label and control panel clearly visible for easy operation. This portable generator weighs 52 lbs and measures 18.2″ tall, 12.7″ wide, and 18.3″ deep. It features tri-fuel capability, parallel readiness, CO Alert for safety, and delivers reliable power in any setting.
Infographic titled “What Size Generator Do You Need?” outlines four steps for calculating generator wattage, featuring an image of the FIRMAN Power Equipment Tri Fuel Inverter Portable Generator 4400/3500 Watt Electric Start 120V Parallel Ready CO Alert on the right.
01/01
Certification: Certification cETL Certification EPA
Model: wt03571

Tri Fuel Inverter Portable Generator 4400/3500 Watt
Electric Start 120V Parallel Ready CO Alert
$1,129.99 USD
Free Shipping on all Generators
SERIES Whisper
TYPE Inverter

The FIRMAN WT03571 Tri-Fuel Inverter Generator delivers 4,125 starting watts and 3,300 running watts of clean, stable power, making it ideal for RV use, camping, and home backup. With the flexibility to run on gasoline, propane, or natural gas, it adapts to your needs wherever you are. It is designed to ensure efficient, dependable operation for handling demanding appliances and sensitive electronics.

Its compact 1.6-gallon fuel tank provides up to 8 hours of runtime at 50% load on gasoline, while its lightweight 52-pound design makes it easy to transport. Parallel capability allows you to connect a second unit for increased output, and it includes an L5-30P to TT-30R adapter for convenient RV connection. Built-in CO Alert adds an extra layer of security.

Compact, flexible, and reliable, the FIRMAN WT03571 delivers powerful inverter performance wherever your next adventure—or emergency—takes you.

The WT03571 comes with an LPG/NG Regulator, a 12V Battery Cable, an Adaptor L5-30P to TT-30R, Engine Oil, an Oil Funnel, and a Tool Kit

**This product is not certified to ship to California.

LEGENDARY FIRMAN ENGINEERING

  • 145cc FIRMAN Engine
  • Starting Watts: 4400(Gas), 4000(LPG), 3500(NG)
  • Running Watts: 3500 (Gas), 3200(LPG), 2800(NG) 
  • 120 volts
  • Electric Start
  • Recoil Start
  • Turbo Mode
  • Super Eco Mode
  • CO Alert
  • Low oil shut off

PERFORMANCE IN A LEAGUE OF ITS OWN

  • 1.6-gallon tank
  • Up to 8 hours of run time at 25% load
  • Weight: 52 lbs
  • 64dB ¼ load 

FEATURES YOU EXPECT FROM FIRMAN

3-year warranty 

New CO alert technology

Multi-featured control panel with covered outlets


  • (1) 5-20R 120V 20A
  • (1) L5-30R 120V 30A TWISTLOCK
  • (1) DC Power Port/Plug 8.3A/12V
  • (1) USB-A 5V 3A 9V 3A 12V 2.5A
  • (1) USB-C 5V 3A 9V 3A 12V 2.5A
ENGINEERED IN THE USA

FIRMAN generators are made to endure every condition from cold winter nights to hot summer days to everything in between.

Industry-Leading Warranty

New FIRMAN generators are backed by a 3-year warranty. Refurbished generators have a limited 90 day warranty

Customer Support

Our skilled technicians located in Peoria, AZ are available 7 days a week to provide the support you need when you need it most. 

4400/3500

Gas

4000/3200

Liquid Propane

3500/2800

Natural Gas

1.6 Gallon Gas Tank

8 Hour Run Time

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Manuals

WT03571 Manual English

download

WT03571 Manual Spanish

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WT03571 Manual French

download

WT03571 Quick Start Guide English

download

WT03571 Quick Start Guide Spanish

download

WT03571 Quick Start Guide French

download

Watch

CO ALERT OVERVIEW

@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.