
Firman W01784 vs Genmax GM2200i
Comparing the Firman W01784 and Genmax GM2200i portable inverter generators. See how noise, runtime, warranty, and weight stack up for camping and light use.
- Firman W01784
- Genmax GM2200i
Comparison Overview
These two portable inverter generators occupy nearly the same space in the market, making the differences between them all the more meaningful. The Genmax GM2200i edges ahead on power with 1800 running watts and 2200 starting watts, compared to the Firman W01784's 1700 running watts and 2100 starting watts. That extra 100 watts on each end isn't dramatic, but it could matter when you're running appliances close to the generator's limit.
Where the Firman pulls ahead is in quieter operation and longer warranty coverage. At 54 dB, the W01784 is noticeably quieter than the Genmax's 58 dB, a difference you'll appreciate in a campground or quiet neighborhood. Firman also backs its unit with a 3-year warranty, triple the Genmax's 1-year warranty, which adds real peace of mind for a product you may not use every day. On the other hand, the Genmax is lighter at 41.9 lbs versus the Firman's 45.9 lbs, and the Firman offers a longer runtime of 9 hours at 25% load compared to the Genmax's 8 hours.
Buyers who value quiet operation and long-term reliability assurance will lean toward the Firman, while those who want a bit more power in a lighter package may prefer the Genmax.
Key takeaways
- Firman W01784 runs at just 54 dB, 4 dB quieter than the Genmax GM2200i's 58 dB
- Genmax GM2200i delivers 1800 running watts and 2200 starting watts for more headroom
- Firman offers a 3-year warranty compared to Genmax's 1-year coverage
- Genmax weighs 41.9 lbs, about 4 lbs lighter than the Firman at 45.9 lbs
- Firman W01784 runs up to 9 hours at 25% load versus 8 hours for the Genmax
- Both are inverter generators producing clean power safe for sensitive electronics
Best use cases
Choose the Firman W01784 if you plan to use your generator in noise-sensitive environments. At 54 dB, it's roughly the volume of a normal conversation, making it a strong pick for campgrounds with quiet hours, tailgating, or running in a residential area during a power outage. The 9-hour runtime at 25% load also means you can keep it going through the night without refueling, which is a real convenience for overnight camping or extended outages. Perhaps most importantly, the 3-year warranty gives you significantly more protection. If you only pull this generator out a few times a year, knowing you're covered for three full years removes a lot of worry about reliability.
Choose the Genmax GM2200i if you need a little more headroom on power output. The extra 100 running watts (bringing it to 1800) and 100 starting watts (2200 total) can be the difference between comfortably running a small appliance and tripping the overload protection. If you're powering a small RV air conditioner on startup or running multiple devices at once, that margin matters. The Genmax is also 4 lbs lighter at 41.9 lbs, which makes it easier to load into a truck bed or carry to a campsite. The tradeoff is a shorter warranty and slightly more noise.
Both generators are gasoline-powered inverter units, so they produce clean power safe for laptops, phones, and other sensitive electronics. Neither is a powerhouse for heavy-duty job site tools or whole-home backup, but for light-duty portable use, both are well-suited. The real decision comes down to whether you prioritize the quieter, longer-warranted Firman or the slightly more powerful, lighter Genmax.
Verdict & recommendation
If your priority is quiet operation and long-term peace of mind, the Firman W01784 is the stronger choice. Its 54 dB noise level and 3-year warranty are hard to beat in this class, and the 9-hour runtime at quarter load is a nice bonus for overnight use. If you need every watt you can get from a compact inverter generator and prefer a lighter unit to carry around, the Genmax GM2200i delivers more power at a lower weight, though you'll accept more noise and a shorter warranty window.
For most casual users (campers, tailgaters, occasional backup power), the Firman's advantages in noise and warranty will matter more day to day than the Genmax's modest power edge. But neither choice is a bad one. Pick based on which tradeoffs align with how and where you'll actually use it.
Last updated March 26, 2026
| Specification | Firman W01784 | Genmax GM2200i |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | Yes | Yes |
| Parallel capable | Yes | Yes |
| RV ready | No | No |
| Running watts | 1700 W | Winner: Winner: 1800 W |
| Starting watts | 2100 W | Winner: Winner: 2200 W |
| Noise (lower limit) | Winner: Winner: 54 dB | 58 dB |
| Weight | 45.9 lbs | Winner: Winner: 41.9 lbs |
| Run time @50% load | Not available | Winner: Winner: 6 h |
| Run time @25% load | 9 h | 8 h |
| Fuel tank | 0.9 gal | 1 gal |
| Fuel gauge | No | No |
| Approx. dimensions (L × W × H) | 20 x 12.1 x 16.7 | 18.9 x 11.4 x 17.3 |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | 5 | 5 |
| GFCI outlets | No | No |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | < 3% % | <3% % |
| Engine | ||
| Engine | 80 cc Firman Max-Pro Series OHV 4-stroke, cast iron sleeve | 79.7 cc Dinking OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil | Recoil |
| Warranty | ||
| Warranty | 3 years | 1 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 1700 W | 1800 W |
| Starting watts | 2100 W | 2200 W |
| Running amps (120V) | Not available | Not available |
| Running amps (240V) | Not available | Not available |
| Peak amps (120V) | Not available | Not available |
| Peak amps (240V) | Not available | Not available |
| Run time @50% load | Not available | 6 h |
| Run time @25% load | 9 h | 8 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | CARB, EPA | EPA, ANSI/PGMA G300-2023 |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Floating | Not available |
| UPC | 840876117842 | 738349925141 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 1700 | 1800 |
| Starting Watts (Gasoline) | 2100 | 2200 |
| Runtime @ 50% Load (Gasoline) | Not available | 6 |
| Runtime @ 25% Load (Gasoline) | 9 | 8 |
| AC Outlet Types | 1x 120V 20A (5-20R); 1x 120V 30A (L5-30R) | 1x Duplex 120V 20A (5-20R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | Dinking OHV 4-stroke |
| Engine Displacement | 80 | 79.7 |
| Cylinder Sleeve | cast iron sleeve | Not available |
| Engine Oil Type | Not available | 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 9 | 8 |
| Runtime @ 50% Load (Gasoline) | Not available | 6 |
| Safety & compliance | ||
| Overload Protection System | Not available | Low oil and overload protection, CO monitoring |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | No | Yes |
| Included equipment | ||
| Included Accessories | Oil, funnel, tool kit, RV adapter, and battery charging cables | Funnel and tool kit |
| Warranty & identification | ||
| Commercial Warranty | 3 | Not available |
| Additional specs | ||
| Summary | The Firman W01784 is a 1700-watt inverter generator built around a compact 80cc OHV 4-stroke engine. This wattage class handles household essentials like refrigerators, power tools, and multiple small appliances simultaneously, but cannot run a central air conditioner or large workshop equipment. The 2100-watt peak gives it enough surge capacity to start compressors and induction motors without stalling. Because the unit weighs only 45.9 pounds and measures 20 by 12.1 by 16.7 inches, users can load it into a truck bed or carry it to a job site without mechanical assistance. The 0.9-gallon fuel tank and 9-hour runtime at 25% load mean a full tank covers a typical workday without refueling. At 54 decibels, it runs quieter than a lawnmower, making it suitable for residential neighborhoods and early-morning camping. | The GENMAX GM2200i is a 2200-watt gasoline inverter generator featuring a 79.7cc engine, CO detection, and parallel capability, designed for quiet and efficient power supply. |
- Most PowerfulGenmax GM2200i1800W running
- QuietestFirman W0178454 dB
- Longest RuntimeGenmax GM2200i6h at 50% load


