It checks today's price at every store, compares the alternatives and answers in about a minute.
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.
In stock
Out of stockSold by American MechanicReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
Store links may earn us a commission. Some prices via Klarna.
Lowest price we've seen: $1,810.17 on Nov 9 at JB Tools. Tracked across 1 store since Nov 9.
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.
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.







