StoreDeal.ai store
Shop
  • Deals
  • Deal checker
  • Black Friday
  • Buying guides
  • Brands
  • Stores
Travel
  • Flight deals
  • Hotel deals
Company
  • Research
  • Press
  • Use in AI assistants
  • Contact
  • deal.ai apps
Black Friday 2026
  • Walmart
  • Best Buy
  • Target
  • TVs
  • Laptops
  • Headphones
  • Apple
  • Gaming
  • Vacuums
  • Kitchen
  • Toys
  • Smartwatches
  • Tablets
  • Furniture
  • Mattresses
© Deal.ai Inc.·2222 Ponce de Leon Blvd, Miami, FL 33134·support@deal.ai
TermsPrivacy
Deal.ai › Firman › Generators
Firman
Firman Tri Fuel Inverter Portable Generator WT05571

Firman Tri Fuel Inverter Portable Generator WT05571

4.3(20 ratings)

Best price now

$1,810.17at JB ToolsChecked Nov 11

Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

Visit JB Tools

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Enter to send, Shift+Enter for a new line

Price facts

  • Last seen at $1,810.17 at JB Tools on Nov 11.
  • Checked at 2 stores.

Our take on the Firman Tri Fuel Inverter Portable Generator WT05571

The Firman WT05571 is a portable inverter generator that runs on gasoline, propane or natural gas, switched with a button. On gasoline it delivers 6,850 starting watts and 5,500 running watts from a 322cc engine with a cast iron sleeve. It has electric and recoil start, a 5.3-gallon tank, eco-mode, CO Alert shutdown and parallel capability. It suits homeowners who want one machine for home backup and job sites without storing only gasoline. Against gasoline-only inverter rivals it adds tri-fuel flexibility and CO shutdown, but it is heavier and louder than small inverter units and costs more than basic open-frame models.

Best forHome backup during outagesJob sites and tailgatingOwners who want propane or natural gas as well as gasolineRV and parallel-ready setups
Pros
  • Runs on gasoline, propane or natural gas
  • 6,850 starting / 5,500 running watts on gasoline
  • Electric start plus recoil backup
  • CO Alert shuts the unit down on dangerous carbon monoxide
  • Eco-mode stretches fuel use
  • Parallel ready for a second unit
Cons
  • Heavier and bulkier than small inverter generators
  • 67 dB is louder than the quietest inverter rivals
  • Lower output on propane and natural gas than on gasoline
  • Inverter units cost more than open-frame generators of similar wattage

Firman Tri Fuel Inverter Portable Generator WT05571 prices at every store

  • JB ToolsNew

    In stock

    $1,810.17Free shippingChecked Nov 11
    Visit JB Tools
  • WalmartNew

    Out of stockSold by American MechanicReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $1,963.75Checked Nov 11
    Visit Walmart

Store links may earn us a commission. Some prices via Klarna.

Firman Tri Fuel Inverter Portable Generator WT05571 price history

$1,810.17$1,810.17
Nov 9Nov 11

Lowest price we've seen: $1,810.17 on Nov 9 at JB Tools. Tracked across 1 store since Nov 9.

What reviewers say

  • 4.3 / 520 ratings

Owners rate it well overall, with 4.3 out of 5 from 20 ratings. They value the tri-fuel flexibility and electric start, and some note it is louder and heavier than expected.

What people mention
  • Fuel optionsPraisedOwners like switching between gasoline, propane and natural gas with a button.
  • StartPraisedThe electric start is called easy, with recoil as a backup.
  • NoiseCriticisedSome owners find it louder than they expected from an inverter generator.
  • WeightCriticisedOwners say it is heavy and awkward to move.
  • SafetyPraisedThe CO Alert shutdown is seen as a useful safety feature.

From JB Tools

  • Tri-fuel: runs on gasoline, propane, or natural gas with a simple button press
  • 6850 starting watts / 5500 running watts on gasoline
  • 322cc engine with recoil and electric start, low oil shutoff, cast iron sleeve
  • 5.3-gallon tank provides up to 14.5 hours of run time at 1/4 load
  • Quiet operation at 67dB at 1/4 load with eco-mode for efficient fuel use
  • CO Alert automatically shuts down the generator if dangerous carbon monoxide levels are detected
Guarantee
Backed by FIRMAN's 3-year warranty; JB Tools offers a 100% satisfaction guarantee and Warranty Program with a Manufacturer Matching Policy.
Returns
60-day return; replacement products (subject to availability) or full refund less return shipping costs, at the customer's option.
Shipping
Free shipping on orders over the stated threshold; excludes residential deliveries.
In the box
Engine oil bottle, Oil funnel, Tool kit, LPG regulator, Quick oil drain

About the Firman Tri Fuel Inverter Portable Generator WT05571

The Firman Tri Fuel Inverter Portable Generator runs on gasoline, propane, or natural gas, and you switch fuels with a button press. On gasoline it delivers 6850 starting watts and 5500 running watts. It outputs 120/240V and is parallel ready.

It has a 322cc engine with a cast iron sleeve and both recoil and electric start. A low oil shutoff is built in. The 5.3-gallon tank provides up to 14.5 hours of run time at 1/4 load.

Operation is quiet at 67dB at 1/4 load, and an eco-mode makes fuel use more efficient. The CO Alert automatically shuts the generator down if it detects dangerous carbon monoxide levels.

Model
WT05571
Fuel type
Tri-fuel: gasoline, propane, or natural gas
Starting watts
6850 W on gasoline
Running watts
5500 W on gasoline
Voltage
120/240V
Engine
322cc, cast iron sleeve
Start type
Electric start and recoil start
Fuel tank
5.3 gallons
Run time
Up to 14.5 hours at 1/4 load
Noise level
67dB at 1/4 load
Safety features
CO Alert automatic shutdown, low oil shutoff
Parallel ready
Yes
Color
Black
In the box
Engine oil bottle, oil funnel, tool kit, LPG regulator, quick oil drain

Specifications

Electric Start
YesSource
color
BlackSource

Questions and answers

Can it really run on three fuels?
Yes. It runs on gasoline, propane or natural gas, and you switch fuels with a button. Output is lower on propane and natural gas than on gasoline.
How long does the tank last?
The 5.3-gallon tank gives up to 14.5 hours at 1/4 load. Eco-mode helps stretch run time at lighter loads.
Is it quiet enough for a campsite?
It is rated 67 dB at 1/4 load, which is quiet for its output but louder than small inverter generators. It is better suited to home backup and job sites than tent camping.
Can I connect it to my home panel?
It provides 120/240V output, so a transfer switch setup can use it. Have a licensed electrician install the connection.
Can I run two units together?
Yes. It is parallel ready, so a second compatible unit can be combined for more power.
What comes in the box?
Engine oil, an oil funnel, a tool kit, an LPG regulator and a quick oil drain are included.
Where is the Firman Tri Fuel Inverter Portable Generator WT05571 cheapest?
At JB Tools, for $1,810.17, as of our latest check.
What do buyers say about the Firman Tri Fuel Inverter Portable Generator WT05571?
Rated 4.3 out of 5 from 20 ratings.
Where can I buy the Firman Tri Fuel Inverter Portable Generator WT05571?
2 stores we checked sell it, including Walmart, JB Tools.

More from Firman

  • F
    Firman Dual Fuel Inverter WH03562OF
    Firman Dual Fuel Inverter WH03562OF
  • F
    Firman 3300-3000W Remote Start Inverter Generator
    Firman 3300-3000W Remote Start Inverter Generator
  • F
    FIRMAN P03613 4550/3650W Gas Portable Generator
    FIRMAN P03613 4550/3650W Gas Portable Generator
  • F
    Firman P03607 4550/3650 Watt Gas Recoil Start Generator
    Firman P03607 4550/3650 Watt Gas Recoil Start Generator
  • I
    INVERTER 3650/3300W ELECTRIC START
    INVERTER 3650/3300W ELECTRIC START
F
FIRMAN W03383 Remote Start Gas Generator
FIRMAN W03383 Remote Start Gas Generator
  • F
    Firman Tri Fuel Portable Generator T09275
    Firman Tri Fuel Portable Generator T09275
  • F
    Firman 10000 8000-Watt Dual Fuel Portable Generator H08052
    Firman 10000 8000-Watt Dual Fuel Portable Generator H08052
  • All Firman deals and products →

    More inverter generators

    • W
      Wen GN400iX
      Wen GN400iX
    • G
      Genmax GM14000IHSB Standby Inverter Generator
      Genmax GM14000IHSB Standby Inverter Generator
    • B
      Briggs & Stratton 4500W Dual Fuel Closed Inverter Generator
      Briggs & Stratton 4500W Dual Fuel Closed Inverter Generator
    • C
      Champion Power Equipment Champion 3400-Watt Dual Fuel Inverter Generator
      Champion Power Equipment Champion 3400-Watt Dual Fuel Inverter Generator
    • R
      Rosewill 2500W Dual Fuel Inverter Generator
      Rosewill 2500W Dual Fuel Inverter Generator
    • P
      Powermax 5000 Watt Dual Fuel Inverter Generator
      Powermax 5000 Watt Dual Fuel Inverter Generator
    • P
      Powermax 10500 Watt Dual Fuel Inverter Generator
      Powermax 10500 Watt Dual Fuel Inverter Generator
    • C
      Champion Power Equipment 8500W Wireless Start Dual Fuel RV Ready Inverter Generator
      Champion Power Equipment 8500W Wireless Start Dual Fuel RV Ready Inverter Generator