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Deal.ai › Firman
Firman
Firman 6,300/7,850-watt tri-fuel portable generator

Firman 6,300/7,850-watt tri-fuel portable generator

Best price now

$2,299.99at Green Vista LivingChecked 1 h ago

Compared across 4 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $2,299.99 at Green Vista Living (checked Nov 15, 2026).
  • Checked at 4 stores.

Our take on the Firman 6,300/7,850-watt tri-fuel portable generator

The Firman WT06375 is a portable inverter generator that runs on gasoline, propane or natural gas, so you can switch fuels depending on what you have on hand. It delivers 7,850 starting and 6,300 running watts on gasoline, dropping to 5,700 running watts on propane and 4,900 on natural gas. A 5.3-gallon tank gives up to 16 hours at quarter load, and electric start with recoil backup plus a self-charging 12V lithium battery make starts easy. CO Alert shuts the engine down when carbon monoxide builds up. Inverter output makes it a reasonable fit for sensitive electronics, though running watts on gas fuels fall well short of a large home's full load.

Best forHome backup where natural gas or propane is already plumbedCamping and tailgating with sensitive electronicsJob sites needing flexible fuel optionsOwners who want electric start without a pull cord
Pros
  • Runs on gasoline, propane or natural gas
  • Inverter output is clean enough for laptops and TVs
  • Electric start with recoil backup
  • CO Alert shuts the engine down automatically
  • Up to 16 hours at quarter load on the 5.3-gallon tank
  • 120/240V selector switch covers both outlet types
Cons
  • Output drops noticeably on propane and natural gas
  • Heavy for one person to move
  • Inverter generators cost more than open-frame rivals
  • Natural gas needs a supply line or kit beyond the included LPG regulator

Firman 6,300/7,850-watt tri-fuel portable generator prices at every store

  • Project FoundryNew

    In stock

    $2,299.99Free shippingChecked 1 h ago
    Visit Project Foundry
  • Outbound PowerNew

    In stock

    $2,299.99Free shippingChecked 1 h ago
    Visit Outbound Power
  • Green Vista LivingNew

    In stock

    $2,299.99Free shippingChecked 1 h ago
    Visit Green Vista Living
  • Grid GetawayNew

    In stock

    $2,299.99Free shippingChecked 1 h ago
    Visit Grid Getaway

Firman 6,300/7,850-watt tri-fuel portable generator price history

Lowest price we've seen: $2,299.99 on Nov 15 at Outbound Power. Tracked across 4 stores since Nov 15.

From Outbound Power

  • Tri-fuel inverter generator runs on gasoline, propane (LPG) or natural gas
  • 7850 starting / 6300 running watts on gasoline; 7100/5700W on propane; 6100/4900W on natural gas
  • 120/240V output with voltage selector switch for 120V or 240V outlets
  • Up to 16 hours of run time at 1/4 load on the 5.3-gallon tank
  • Electric start with recoil backup; 12V lithium battery charges while running
  • CO Alert automatic engine shutdown when carbon monoxide builds up
Materials
322cc Firman single-cylinder, 4-stroke OHV, air-cooled engine with cast iron cylinder sleeve
Fit
132 lbs with 8" flat-free wheels and a folding U-handle
Care
Use 87 octane minimum unleaded gasoline, no more than 10% ethanol; lubricating oil capacity 35.5 fl oz (1050 ml)
Guarantee
Firman 3-year limited warranty: 1 year parts and labor, 3 years parts and technical support for the original purchaser; commercial/industrial use 90 days parts
Returns
Most items may be returned within 30 days of delivery; returns are not accepted beyond 30 days following delivery
Shipping
Free shipping to the lower 48; most orders processed within 1-3 business days, then 3-8 days in transit; not certified to ship to California
In the box
1 x Firman WT06375 Tri-Fuel Inverter Portable Generator, 1 x Engine Oil Bottle, 1 x Oil Funnel, 1 x Tool Kit, 1 x LPG Regulator, 1 x Quick Oil Drain

About the Firman 6,300/7,850-watt tri-fuel portable generator

This is a tri-fuel portable inverter generator that runs on gasoline, propane (LPG) or natural gas. On gasoline it produces 7,850 starting watts and 6,300 running watts. On propane it produces 7,100 starting and 5,700 running watts, and on natural gas 6,100 starting and 4,900 running watts.

It has 120/240V output, and a voltage selector switch sets the outlets to 120V or 240V. The engine is a 322cc Firman single-cylinder, 4-stroke OHV, air-cooled design with a cast iron cylinder sleeve. A CO Alert system shuts the engine down automatically when carbon monoxide builds up.

Starting is electric, with a recoil start as backup. A 12V lithium battery charges while the generator runs. It runs up to 16 hours at 1/4 load on the 5.3-gallon tank. It weighs 132 lbs and has 8" flat-free wheels and a folding U-handle.

Model
Firman WT06375
Fuel types
Gasoline, propane (LPG), natural gas
Gasoline power
7,850 starting watts / 6,300 running watts
Propane power
7,100 starting watts / 5,700 running watts
Natural gas power
6,100 starting watts / 4,900 running watts
Output
120/240V with voltage selector switch
Engine
322cc Firman single-cylinder, 4-stroke OHV, air-cooled, cast iron cylinder sleeve
Starting
Electric start with recoil backup
Battery
12V lithium, charges while running
Run time
Up to 16 hours at 1/4 load
Fuel tank
5.3 gallons
Safety
CO Alert automatic engine shutdown
Weight
132 lbs
Mobility
8" flat-free wheels, folding U-handle
Gasoline type
87 octane minimum unleaded, no more than 10% ethanol
Oil capacity
35.5 fl oz (1050 ml)
In the box
Generator, engine oil bottle, oil funnel, tool kit, LPG regulator, quick oil drain

Questions and answers

How many watts do I get on propane or natural gas?
Propane gives 7,100 starting and 5,700 running watts; natural gas gives 6,100 starting and 4,900 running watts. Gasoline is the highest at 7,850 starting and 6,300 running.
Can it run a whole house?
No. At 6,300 running watts on gasoline it covers essentials like a fridge, furnace blower, lights and a few electronics. A large home with central AC needs more capacity or load management.
Does it come with a propane hose?
Yes, an LPG regulator is in the box. Natural gas operation needs a supply line and hookup that are not included.
Is the inverter output safe for electronics?
Yes. Inverter output is cleaner than a conventional generator's, so phones, laptops and TVs can be plugged in directly.
How long does it run on a tank?
Up to 16 hours at quarter load on the 5.3-gallon tank. Expect shorter run times as load rises.
What is CO Alert?
It is a carbon monoxide sensor that shuts the engine down automatically when CO builds up, which matters if the unit runs near a window or garage.
Where is the Firman 6,300/7,850-watt tri-fuel portable generator cheapest?
At Green Vista Living, for $2,299.99, as of our latest check.
Where can I buy the Firman 6,300/7,850-watt tri-fuel portable generator?
4 stores we checked sell it, including Project Foundry, Outbound Power, Green Vista Living, Grid Getaway.

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Stores we've priced the Firman 6,300/7,850-watt tri-fuel portable generator at

  • Green Vista Living deals and prices

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