Free Shipping & Tax-Free. Call or Text: 888-332-7989 for Expert Advice & Today's Best Price.

FREE SHIPPING • 30 DAY RETURNS

Speak With An Energy Specialist:

+18883327989
support@energysystemscentral.com
Hot
New
In stock
Pre-order
Out stock

Firman Tri Fuel Inverter Portable Generator 6850W Electric Start With Co Alert

By: Firman SKU: WT05571 Out of stock
$1,329.99
FOUND A LOWER PRICE?

Let us know and we will beat it. Get the best deal online, Always.

Authorized Dealer
Full Manufacturer Warranty Included
Free Shipping
Free Shipping To The Lower 48
30 Day Return Window
Clear Policies. No Runaround.
Specialist Support Team
Pre And Post Purchase Assistance
ESTIMATED DELIVERY BETWEEN
Loading dates
Order within 00h 00m to get it by the earliest date.
Description Shipping & Easy Returns Why Buy From Us

The FIRMAN WT05571 Tri-Fuel Whisper Series Generator provides flexible and reliable power for RVs, camping, home backup, and DIY projects. Its tri-fuel capability allows operation on gasoline, propane, or natural gas at the push of a button, adapting to available fuel without compromising performance.

Delivering up to 6,850 starting watts and 5,500 running watts on gasoline, 6,250 starting watts and 5,000 running watts on propane, and 5,500 starting watts and 4,500 running watts on natural gas, it ensures consistent energy for household devices, RV systems, and power tools.

Designed with portability in mind, this generator features a compact 136.7 lb frame, integrated wheel kit, and folding handle for easy transport. Operating at just 67 dB, it maintains a quiet footprint suitable for residential areas, campsites, and RV parks. Eco Mode improves fuel efficiency under lighter loads, while CO Alert technology automatically shuts down the generator if unsafe carbon monoxide levels are detected.

Equipped with a multi-functional outlet panel—including household, RV, and high-demand outlets, plus USB-C and 12V DC ports—the WT05571 provides convenient and versatile power for modern electronics alongside larger equipment. Included accessories such as an engine oil bottle, oil funnel, tool kit, LPG regulator, and quick oil drain make setup and maintenance simple.


Features

  • Tri-fuel operation: Gasoline, Propane, Natural Gas
  • Whisper Series quiet operation: 67 dB at ¼ load
  • Eco Mode for improved fuel efficiency
  • CO Alert technology for added safety
  • Integrated wheel kit and folding handle for portability
  • Multi-featured control panel with covered outlets
  • USB-C fast charging and 12V DC power port
  • Parallel operation compatible
  • Multi-Meter display for voltage, frequency, fuel, and oil alert monitoring
  • Low oil automatic shutoff
  • 3-year manufacturer warranty


Specifications

  • Engine: 322cc
  • Start Type: Recoil and Electric
  • Starting Watts: 6,850W Gas / 6,250W LPG / 5,500W NG
  • Running Watts: 5,500W Gas / 5,000W LPG / 4,500W NG
  • AC Voltage: 120/240V
  • DC Voltage: 12V
  • Frequency: 60 Hz
  • Tank Size: 5.3 Gal
  • Run Time: Up to 14.5 hrs at ¼ load
  • Decibels: 67 dB at ¼ load
  • THD @ Full Load: 3%
  • Low Oil Shutoff: Yes
  • CO Shutoff: Yes
  • Power Stream Alternator: Yes
  • Cast Iron Sleeve: Yes
  • Fuel System: Gas / LPG / NG
  • Frame Material: Steel
  • Wheels: 8" gray plastic, flat-free
  • Handle: U-shape folding
  • 5-20R 120V 20A DUPLEX GFCI: 1
  • TT-30R 120V 30A TWISTLOCK: 1
  • L14-30R 120V/240V 30A TWISTLOCK (22.9A/240V/5,500W): 1
  • 14-50R 120V/240V 50A (22.9A/240V/5,300W): 1
  • USB-C (3.1/5A/5/9/12/15/20V DC/60W): 1
  • 12V DC Power Port/Plug (8.3A/12V DC/100W): 1
  • Parallel Port: Yes
  • Multi-Meter: Voltage, Frequency, Fuel Level, Oil Alert, Overload
  • Certifications: EPA Certified, cETL Certified, PGMA


Warranty

3-year manufacturer warranty

Key Specs

  • Running Watts: 5500
  • Fuel Type: Tri Fuel
  • Run Time: 14.5 hrs
  • Warranty: 3-years

Free Shipping Across the United States.Read our full Shipping Policy here.

Market-Leading 30-Day Returns Process.Read more about our Returns Policy here.

Choosing the right retailer matters, especially for critical power and off-grid systems. Here’s what sets Energy Systems Central apart.

  • Free Shipping Nationwide: Transparent pricing with no hidden fees at checkout.
  • Best Price Assurance: If you find the same product offered for less, we’ll review and match it where applicable.
  • Easy 30-Day Returns: Clear, straightforward return policies designed for peace of mind.
  • Expert-Led Support: Speak directly with knowledgeable specialists who understand the products. Call us at 888-332-7989.

FREQUENTLY ASKED
QUESTIONS

Yes. We provide free standard shipping on all orders shipped within the United States. Shipping costs are included in the listed price with no hidden fees at checkout.

Most orders are processed within 1 to 2 business days. Delivery times typically range from 3 to 7 business days depending on your location, carrier scheduling, and product size.

We offer a 30 day return window for eligible products that are unused and in original condition. Our support team will guide you through the return or exchange process if needed.

Absolutely. Yes. Our knowledgeable product specialists are available by phone, live chat, or email to help you select the right equipment for your application.

Most products include a manufacturer warranty, typically starting at one year. Warranty terms vary by brand and model and are listed on each product page.

Yes. We are an authorized retailer and only sell brand new, genuine products sourced directly from manufacturers or their approved distributors.

Firman Tri Fuel Inverter Portable Generator 6850W Electric Start With Co Alert

Firman Tri Fuel Inverter Portable Generator 6850W Electric Start With Co Alert

$1,329.99