Firman T08072 Tri-Fuel 8000W/10000W Portable Generator | Electric Start | 120/240V | CO Alert

The Firman T08072 Tri-Fuel 8000W/10000W Portable Generator Gives You Three Fuel Choices for 120/240V Home Backup

The Firman T08072 is a tri-fuel open frame generator built on Firman's Max Pro Series 439cc OHV engine. On gasoline it delivers 10000 starting watts and 8000 running watts. On propane (LPG) it delivers 9050 starting and 7250 running watts, and on natural gas (NG) 6900 starting and 5500 running watts. Output is 120/240V from an 8-gallon tank.

It's built for homeowners who want a portable generator that can feed a transfer switch when the power goes out, with the option to run on the fuel they have available. Electric start, a 50A 14-50R outlet, a GFCI duplex and Firman CO Alert shutdown come standard.

Firman T08072 Tri-Fuel 8000W/10000W Portable Generator Features

Gasoline, Propane or Natural Gas

The main fuel selector chooses GAS or LPG/NG and also turns the engine on, and a second selector picks LPG or NG. Both gas fuels connect at a 3/8" flare male inlet. Firman includes the LPG hose with regulator, and natural gas runs on a supply pressure of 7 to 11 inches of water column.

120/240V Outlets for Larger Loads

The covered panel has a 14-50R 120/240V 50A outlet (up to 33.33A at 240V), an L14-30R 120/240V 30A twist lock, an L5-30R 120V 30A twist lock and a 5-20R 120V 20A GFCI duplex. The GFCI tests itself periodically and shows a solid green light when it's working.

Transfer Switch Connection

Either 120/240V receptacle can cord-connect the generator to a listed transfer switch installed by a licensed electrician. The connection must isolate generator power from utility power. Once it's in place, you can run 120V and 240V home circuits during an outage.

Electric Start With Recoil Backup

Hold the engine start switch in the START position to crank the engine, or use the recoil starter as a backup. When you turn the fuel selector on, an indicator light glows red for up to 4 minutes. Start within that window, or turn the selector off and back on to reset the battery power saving mode.

CO Alert Automatic Shutdown

CO Alert shuts the engine down automatically when harmful levels of carbon monoxide build up around the generator, or if a CO Alert fault occurs. A yellow light blinks for five seconds at startup to show the system is working. CO Alert does not replace carbon monoxide alarms, so Firman tells you to install battery-powered CO alarms in your home.

Max Pro Series Engine With Phoenix Fat Head Block

Firman pairs the 439cc engine with its Phoenix Fat Head Block, which Firman says helps it run cool and efficiently under heavy load. The engine has a cast iron sleeve and low oil shutdown, and an automatic voltage regulator (AVR) controls output voltage.

8-Gallon Tank, Fuel Gauge and Data-Minder

Firman rates the 8-gallon tank at up to 12 hours of run time at 25% load, and the fuel gauge shows the level at a glance. Press SELECT on the 3-1 Data-Minder to see voltage, hertz and running hours. 10.0" flat free wheels and a handle help you move it.

Real-World Applications

Home backup through a transfer switch. With a listed transfer switch installed by a licensed electrician, run selected 120V and 240V home circuits during an outage.

Homes with natural gas service. Connect to your natural gas supply with an approved flexible fuel line so you aren't limited to the gasoline in the tank during a long outage.

Storm preparation. Keep gasoline and a propane cylinder ready as well, so you have more than one fuel to fall back on after a big storm.

Outdoor events. Firman lists hosting an outdoor event among its uses. Run lights and equipment through outdoor-rated extension cords.

How It Compares to Common Alternatives

Versus the Firman T08073. The T08073 has the same watt ratings on all three fuels and an 8-gallon tank, with a larger 459cc engine, 11.0" wheels and a 4-year warranty, and it weighs 225 lbs. The T08072 weighs 213 lbs and has a 3-year warranty.

Versus the Firman H08052. The H08052 has the same 8000W/10000W gasoline and 7250W/9050W propane ratings and a 439cc engine, but runs on gasoline and propane only. Choose the T08072 if you want natural gas as well.

Versus home standby generators. A standby generator is installed permanently. The T08072 connects through a transfer switch when you need it, then rolls back into storage, and it can still run on natural gas.

Is This Tri-Fuel Generator the Right Fit

• California. Firman states this unit is not certified to ship to California, so it can't be sold or shipped there.
• Natural gas hose not included. You'll need a locally approved flexible fuel supply line. Firman recommends its 25ft Quick Connect Hose Kit (Model 1815) or 10ft Quick Connect Hose Kit (Model 1805), and a licensed plumber can confirm code compliance.
• Home connection. Connections to your home's electrical system must use a listed transfer switch installed by a licensed electrician. The neutral is bonded to the generator frame, so share that with your electrician.
• Weight and battery. At 213 lbs it needs a firm, level surface and help if you lift it. The 12V battery charges only while the engine runs, so use a trickle charger or maintainer (not included) if you run it less than about once every two weeks.
• Placement. Run it outdoors only, at least 20 feet from occupied spaces with the exhaust pointed away. Firman's manual says it is not intended for use at a construction site as defined by NEC section 590.6.

This may be a good fit if

• You have natural gas service and want to use it during outages
• You plan to back up your home through a transfer switch
• You need a 14-50R or L14-30R outlet
• You want electric start and automatic CO shutdown

Common Questions

What Do I Need to Run It on Natural Gas?

A locally approved flexible fuel line between your natural gas supply connection and the generator's LPG/NG inlet, installed to local codes, or to NFPA 54 and CSA B149.1 where no local code applies. Supply pressure should be 7 to 11 inches of water column, and the generator must still sit at least 20 feet from occupied spaces.

How Long Does It Run?

Firman rates it at up to 12 hours at 25% load on the 8-gallon tank. On natural gas, the manual lists 72 ft³/hr at no load, 86 ft³/hr at half load and 101 ft³/hr at full load. On propane, it lists 15.6, 33 and 54.6 ft³/hr.

How Loud Is It?

Firman lists 74 dB at 1/4 load.

What Warranty Does It Have?

The T08072 has a Firman 3-year limited warranty, with 1 year of parts and labor and 3 years of parts and technical support for the original purchaser. Commercial and industrial use is covered for 90 days parts and labor and 180 days parts. Register within 10 days of purchase.

What's Included

• 1 x Firman T08072 Tri-Fuel Portable Generator
• 1 x LPG Hose With Regulator
• 1 x Hose Holder
• 1 x Engine Oil Bottle
• 1 x Oil Funnel
• 1 x Spark Plug Wrench
• 1 x Double Open-Ended Wrench (10mm x 12mm)

Fuel Flexibility for Your Home Backup Plan

The Firman T08072 Tri-Fuel 8000W/10000W Portable Generator gives you 120/240V power on gasoline, propane or natural gas, a 50A outlet for your transfer switch and CO Alert shutdown. If you're planning a home backup setup or a natural gas hookup, the Outbound Power team is happy to help.

Firman T08072 Manual

Firman T08072 Quick Start Guide