FIRMAN Tri Fuel Portable Generator 11400W Electric Start 120V/240V with CO Alert
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FIRMAN Tri Fuel Portable Generator 11400W Electric Start 120V/240V with CO Alert
Description
The FIRMAN T09275 is a heavy-duty tri-fuel portable generator engineered to deliver serious power wherever and whenever you need it most. With the ability to run on gasoline, propane (LPG), or natural gas (NG), this generator gives you unmatched fuel flexibility for home backup, job sites, farms, and large outdoor events. Producing up to 11,400 starting watts and 9,200 running watts on gasoline, it's powerful enough to serve as a portable alternative to a whole-home standby generator when paired with a transfer switch.
At the heart of this machine is a robust 459cc FIRMAN engine with a cast iron sleeve, built to handle years of demanding use without breaking down. A 9-gallon steel fuel tank provides up to 11 hours of runtime at 50% load, and the electric start means you're up and running quickly - even in an emergency. The CO Alert system adds an essential layer of safety, monitoring for dangerous carbon monoxide levels and helping protect your family or crew.
Key Features
- Tri-Fuel Capability: Runs on gasoline, propane (LPG), or natural gas (NG) - choose the fuel that's available or most convenient.
- 11,400 Starting / 9,200 Running Watts (Gas): Enough power for whole-home backup, RVs, job sites, farms, and large events.
- Multi-Fuel Output: 10,400 / 8,300 watts on propane; 8,650 / 6,900 watts on natural gas - reliable across all three fuel types.
- 459cc FIRMAN Engine with Cast Iron Sleeve: Heavy-duty engine construction designed for long-term durability under continuous heavy loads.
- Electric Start & Recoil Backup: Push-button electric start for effortless operation, with recoil start as a reliable backup.
- CO Alert Safety System: Built-in carbon monoxide sensor provides critical protection for you, your family, and your crew.
- 9-Gallon Steel Fuel Tank: Up to 11 hours of runtime at 50% load, with up to 12 hours at 25% load.
- Versatile Outlet Panel: Includes (1) 5-20R 120V 20A GFCI duplex, (1) L5-30R 120V 30A twist-lock, (1) L14-30R 120V/240V 30A twist-lock, and (1) 14-50R 120V/240V 50A outlet.
- Low Oil Shutoff & Power Stream Alternator: Protects the engine automatically and delivers clean, stable power output.
- 3-Year Warranty: Backed by FIRMAN's industry-leading 3-year warranty with U.S.-based customer support available 7 days a week.
- Flat-Free Wheels & Folding Handle: 11" flat-free wheels and a single folding handle with grip make it easy to move around your property or job site.
Shipping
Ships free! Please email us at service@omahasportsandgames.com for a delivery ETA or to confirm shipping details.
What's Included
- FIRMAN T09275 Tri-Fuel Portable Generator
- Engine oil bottle
- Oil funnel
- Spark plug wrench
- Double open-ended wrench (10mm / 12mm)
- LPG regulator with hose holder
Why You'll Love It
The FIRMAN T09275 is trusted by homeowners, contractors, and emergency preparedness planners who need reliable power they can count on when it matters most. Engineered in the USA, FIRMAN generators are designed to endure everything from cold winter nights to sweltering summer heat - year after year. The tri-fuel design means you're never caught without an option; whether you're tapping into a natural gas line during a storm outage or using propane at a remote job site, this generator adapts to your situation. With a 3-year warranty and a skilled support team in Peoria, AZ available 7 days a week, you're never left without backup when something goes wrong. This is the kind of generator that facilities managers, farmers, and serious homeowners buy once and rely on for years.
Product Specifications
View Product Specs
| Engine | 459cc FIRMAN |
|---|---|
| Starting Watts (Gas / LPG / NG) | 11,400W / 10,400W / 8,650W |
| Running Watts (Gas / LPG / NG) | 9,200W / 8,300W / 6,900W |
| AC Voltage | 120V / 240V |
| Frequency | 60 Hz |
| Fuel Types | Gasoline, Propane (LPG), Natural Gas (NG) |
| Fuel Tank Size | 9 gallons (steel) |
| Run Time | 11 hrs at 50% load; 12 hrs at 25% load |
| Noise Level | 74 dB at 1/2 load |
| THD at Full Load | 11%-14% |
| Electric Start | Yes |
| Recoil Start | Yes |
| CO Alert | Yes |
| Low Oil Shutoff | Yes |
| Cast Iron Sleeve | Yes |
| Power Stream Alternator | Yes |
| Outlets | (1) 5-20R 120V 20A GFCI, (1) L5-30R 120V 30A, (1) L14-30R 120/240V 30A, (1) 14-50R 120/240V 50A |
| Wheels | 11.0" flat-free (black/gray plastic) |
| Handle | Single folding with grip |
| Unit Dimensions | 31.0" L x 29.4" W x 27" H |
| Unit Weight | 217.5 lbs |
| Carton Dimensions | 33.2" L x 23.2" W x 24.4" H |
| Carton Weight | 241 lbs |
| EPA Certified | Yes |
| cETL Certified | Yes |
| CARB Certified | No (not available for sale in California) |
| ANSI/PGMA G300-2018 | Yes |
| Warranty | 3-year limited warranty |
| UPC | 840876192757 |
| Assembly Required | Minimal assembly (add oil, attach handles/wheels). Ships in carton via freight. |
Manuals & Guides
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FAQ
What is the difference between starting watts and running watts?
Starting watts (also called peak or surge watts) is the extra power the generator briefly provides to start motor-driven appliances like refrigerators, air conditioners, and pumps - which require a surge of electricity to get running. Running watts is the continuous power the generator sustains during normal operation. For the T09275, that's 11,400 starting and 9,200 running watts on gasoline. When sizing your generator, make sure your total running wattage needs stay under the running watts rating.
Can I connect this generator to my home's natural gas line?
Yes - the T09275 is designed to run on natural gas (NG) in addition to gasoline and propane. When connected to a natural gas line, it produces 8,650 starting watts and 6,900 running watts. This is especially convenient for extended outages since you won't need to store or refill fuel. You'll need the appropriate NG regulator and a qualified technician to make the connection safely.
How does the CO Alert system work?
The CO Alert system continuously monitors the surrounding air for dangerous levels of carbon monoxide gas. If CO reaches a hazardous concentration, the system triggers an alert to warn you and can initiate a shutdown. This is an important safety feature - carbon monoxide is colorless and odorless, and generator exhaust is a common source. Always operate this generator outdoors and well away from windows, doors, and vents regardless of the CO sensor.
Do I need a transfer switch to use this generator for home backup?
Yes - to safely power your home's circuits during an outage, you should use a properly installed transfer switch. This prevents dangerous back-feeding of electricity onto utility lines, which can injure utility workers and damage your generator. The T09275's L14-30R and 14-50R outlets are designed to work with standard transfer switch setups. Consult a licensed electrician for installation.
Is this generator available for sale in California?
No - this product is not CARB certified and cannot be shipped to California. It is EPA certified and available for sale in all other U.S. states. If you're in California, please contact us and we can help you find a CARB-compliant alternative.
How is this generator shipped, and will I need to assemble it?
The T09275 ships in a carton weighing approximately 241 lbs, typically via freight carrier. Minimal assembly is required upon arrival - primarily adding oil, attaching the wheel kit, and connecting the handle. All necessary tools and an oil bottle are included in the box. Please email service@omahasportsandgames.com if you have questions about your specific delivery.
Thank you for trusting us with your order! This product is shipped directly from the manufacturing warehouse to get to customers all over the U.S. as soon as possible!
While many of our products are prepared and shipped out within 48 hours, some of our items are built to order or require custom pieces that could take 2-6 weeks to prepare before shipping! Please contact us at 888-884-2234 for a delivery ETA if you have a strict timeline.
Thanks!
Omaha Sports & Games Team
Returns & Refunds Policy
Return Policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase. To start a return, you can contact us at service@omahasportsandgames.com.
If your return request is accepted, it will be up to you as the buyer to return the item in its original packaging, unworn and unused. You as the buyer will be responsible for paying the return shipping. We may be able to assist you in scheduling a pickup for return but the payment will still be your responsibility. You can always contact us for any return question at service@omahasportsandgames.com.
All products are subject to a minimum 15% restocking fee based on the quality of the returned product and packaging.
Items opened, tested, used, or any other non-new condition may be eligible for return based on the manufacturer's return policy.
Shipping Damages and Issues
You must inspect your order upon reception and refuse delivery if you see damage. DO NOT sign for delivery if there is apparent damage to the product. If you sign for the delivery and later claim shipping damage, there is very little we can do to help.
If your order does not require signing at delivery and is instead just dropped off at doorstep with damage, contact us immediately with photos of the damaged boxes.
If your item(s) is defective, damaged or if you receive the wrong item, contact us immediately so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
Certain types of items cannot be returned, such as custom products, special orders or personalized items. Please get in touch if you have questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items, gift cards, or multiple product bundle discounts.
| Specification name | Specification Value |
|---|---|
| Color pattern | Navy, Blue, Black |
| Ignition system | Electronic |
| Power source | Gasoline, Propane, Natural gas |