Firman W01781 - 1700/2100W Inverter Generator
The Firman W01781 is a quiet, compact and lightweight inverter generator with a rated wattage of 1,700 W and a starting wattage of 2,100 W. (Read full specs)
Page Content
Description
The FIRMAN W01781 Inverter generator features 2100 starting watts and 1700 running watts. Power is supplied by our Max Pro Series 80cc FIRMAN engine which runs cool and efficient thanks to its Phoenix Fat Head Block. Our Whisper Series muffler keeps the W01781 running a quiet 54 decibels – well below the standards set by the National Parks Service, and our spark arrester has been approved by the USDA Forest Service. The .9 gallon fuel capacity provides a whopping 9 hours of run time. Starting is simple with the FIRMAN First pull, reliable recoil system.
Zoom on the Firman W01781
In a nutshell, the Firman W01781 is a quiet, compact and lightweight portable inverter generator mostly geared towards:
- Camping and tailgating hobbyists looking for a portable power source
- Handcrafting enthusiasts who wish to work on-the-go
In the following paragraphs, we shall explore the power characteristics, available outlets, portability, and any additional features of the device.
Power & Run Time
Featuring a 80 cc Firman Max-Pro Series OHV 4-stroke engine with cast iron sleeve, the Firman W01781 operates using gasoline, providing 120V, with a running wattage of 1,700W and a starting wattage of 2,100W. Moreover, the parallel capability (Firman parallel kit (opens in a new tab) not included) allows for doubling of power output when paired with another similar or compatible unit, providing increased energy capacity and reliability for diverse needs.
Operating with a noise level of 54 dBA (just slightly more noisy than a conversation at home), the inverter generator starts up via a standard recoil pull-rope starting mechanism.
With its 0.9 gallon fuel tank, the W01781 can operate for up to 9 hours when fully fueled (with fuel usage averaging around 0.1 GPH).
The <3% Total Harmonic Distortion (THD) of the W01781 ensures a clean sine wave output, providing a secure power source for your sensitive electronics through its AC outlets.
Outlets
The control panel includes the following 2 AC outlets:
Moreover, it boasts 2 DC outlets: there's a 5V USB port enabling convenient charging of devices like mobile phones and tablets and a 12V 5A (cigarette lighter style) receptacle enabling simple battery charging for added ease.
Portability
As an inverter generator, the Firman W01781 showcases a closed design (L20 x W12.1 x H16.7 in), enhancing aesthetics and ensuring quieter operation compared to conventional, open frame models. The featured design follows the latest trends and is ideal for easy and recreational use.
With a weight of only 45.9 lbs, the W01781 is deisgned to be a lightweight and easily portable generator. Thanks to its lightweight design, one person can easily move it around, ensuring power availability wherever you travel. This convenience is further enhanced by its handle (molded in the case), which allows for easy carrying.
Features
The device’s light indicators will display if the generator is overloaded, the oil level is too low and the generator is ready.
From a security standpoint, the product offers an automatic low oil shut-off, allowing you to use it with a peace of mind.
Along the basic documentation and an owner's manual (opens in a new tab), useful for starting the generator right away, the Firman W01781's package also includes these accessories: oil, battery charging cables, funnel and tool kit.
Product Video
The Firman W01781 versus other generators
The following charts are provided to give you an idea of how some of the key specs of the Firman W01781 compare to inverter generators of similar power (between 1500 and 2500 W).
- At a weight of 45.9 pounds, the Firman W01781 places in the expected weight range of the inverter generators in the 1500-2500 rated wattage range. if you wish to prioritize weight, the Genmax GM2000i is one of the top contenders in its power category, weighing only 34.2 pounds.
- At a lowest noise rating of 54 dBA, this inverter generator is one of the quieter devices of similar type and power. If you wish to prioritize minimal noise, the Honda EU2200i stands out as one of the quietest options among generators of similar power, with a rating of 48 dBA.
- Regarding its autonomy, the autonomy of the W01781, reaching up to 9 hours at a 25% load, can be considered as low end, compared to other inverters of a roughly equal output. If runtime is a priority for you, the DuroMax XP2300iH stands out as one of the generators with the longest run time in its power range, providing up to 13 hours of continuous use.
- Run times are important, yet thanks to their dependence on the fuel capacity, they should be judged along with the fuel consumption of the device. This inverter generator is one of the more fuel-efficient models of the aforementioned output range, as its estimated fuel consumption reaches just 0.1 GPH (gallon per hour) at 25% load. If gasoline efficiency is at the top of your list, you may want to have a look at the Westinghouse iGen2800c, which has great fuel efficiency, with a gas consumption of only 0.08 gallons per hour.
Here's a list of the most popular specific comparisons:
Price comparison
As you can see from these interactive charts, when compared to other 1500-2500W inverter generators, the Firman W01781 is on the average side of the price range.
Therefore, this generator nicely fits in the expected budget for this kind of product.
The bottom line
- In the expected price range
- Several accessories included
- Parallel capable
- Inverter
- Quiet for its power (54 dBA)
- Fuel efficient
- Decent weight (45.9 lbs)
- No data center
- Relatively low run time
Features and Specifications
| Inverter | Yes |
|---|---|
| Parallel capable | Yes, cable not included |
| RV ready | No |
| Fuel | Gasoline |
| Engine | 80 cc Firman Max-Pro Series OHV 4-stroke, cast iron sleeve |
| Starting system | Recoil |
| Warranty | 3 years |
| Voltage | AC: 120V 60 Hz, DC: 12V |
|---|---|
| Running watts | 1,700 W |
| Starting watts | 2,100 W |
| Running amps | 14.2 amps |
| Peak amps | 17.5 amps |
| Run time @50% load | 4.25 h |
| Run time @25% load | 9 h |
| GFCI outlets | No |
|---|---|
| Covered outlets | Yes |
| Automatic Voltage Regulation | Inverter |
| AC outlets | 1x Duplex 120V 20A (5-20R) |
| DC outlets | 1x 5V USB port 1x 12V 5A (cigarette lighter style) |
| Data center | No |
| Indicators | Low oil, overload and output ready |
| Fuel tank | Plastic, 0.9 gal |
| Fuel gauge | No |
| Weight | 45.9 lbs |
|---|---|
| Approx. dimensions (L x W x H) | 20 x 12.1 x 16.7 in |
| Noise (lower limit) | 54 dBA |
| THD | < 3% |
| Compliance | CARB, EPA |
| Security | Low oil protection |
| Spark arrestor | Yes |
| Neutral | Floating |
| Accessories included | Oil, funnel, tool kit, and battery charging cables |
| Country of origin | China |
| Series | Whisper |
| Other model numbers | W2100i |
| UPC | 840876117811 |
We've taken extra care to research and verify each of the specifications above. That said, occasional mistakes or omissions are still possible. If you spot any missing or inaccurate information, feel free to suggest a correction so we can address it.
About FIRMAN Power Equipment
Founded in 1999, Firman Power Equipment is a company with a short, but established history in the power equipment industry. Based in Arizona, the company offers an immense range of products, including power tools, automotive equipment, storage utilities, work wear, but most importantly, a wide selection of generators of all sizes, designs and outputs. Interestingly, Firman is a wholly owned subsidiary of the China National Machinery Industry Corporation - a somewhat well renowned company in China and acts as a de facto distributor of their products in the US.
Warranty Information
The Firman W01781 is covered under a warranty for up to 3 years. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of Firman generators, please consult Firman's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-844-FIRMAN1 (844-347-6261).
Questions & Answers
What can it power?
| Item | Running Watts | Starting Watts | |
|---|---|---|---|
| At home | Refrigerator (energy star) | 192 | 1192 |
| Washing machine | 900 | 1650 | |
| Total | 1092 W | 2092 W | |
| For camping | Radiant heater | 1300 | 1300 |
| Set of 5 LED light bulbs | 55 | 55 | |
| Total | 1355 W | 1355 W | |
| For work | Demolition hammer | 1260 | 1260 |
| Bug zapper | 80 | 80 | |
| Total | 1340 W | 1340 W |
Couldn't find the right answer for you? Ask your own question.




User Reviews
not too heavy at approx 48 lb.
quiet – sitting just outside the mobile home and we can’t hear it inside.
ran all night on a tank of fuel which is .9 gal.
In order to check the oil; the front panel must be removed. There are several tiny screws to undo and possibly in the dark. Very terrible design feature. Other than that I would recommend this generator. (I’m going to cut an access hole!)