- Wattage (Gas): 2,100 W / 1,700 W
- THD: < 3%
- Noise Level: 54 dBA
- Fuel Type: Gasoline
- RV Ready: No
- Run Time@ 25% load: 9 h
- Run Time@ 50% load: 4.25 h
- Weight: 45.9 lbs
Table Of Contents
We are proud of our independence and have no ties to manufacturers. To maintain our objectivity, we do not accept free products. Our income is generated by advertising fees paid by retailers for qualifying purchases.
The Firman W01781 is made with an 80 cc Firman Max-Pro Series OHV 4-stroke engine that runs on gasoline. It has a 120V output and a running power of 1,700W and a peak power of 2,100W. Also, since it can work in parallel (but doesn’t come with a Firman parallel kit), its power can be doubled by connecting it to a second unit that works with it. The noise level of the inverter generator is 54 dBA, which is just a little louder than a conversation at home. It is started with a simple pull-start mechanism. The W01781 can run for up to 9 hours on a full tank. It uses about 0.1 GPH of fuel per hour, so it can run for that long. The W01781 makes a clean sine wave with a Total Harmonic Distortion of 3%, so you can safely plug in sensitive electronics (THD).
The control panel has 2 AC outlets for the following: Duplex 120V 20A (5-20R).It also has 2 DC outlets: a 5V USB port that makes it easy to charge devices like phones and tablets, and a 12V 5A receptacle that looks like a cigarette lighter and makes it easy to charge batteries.
The lights tell you if the generator is too full, if the oil level is too low, or if it is ready to use.As far as safety goes, the generator can be used without worry because it shuts off automatically when it runs out of oil.The Firman W01781 comes with basic instructions and an owner’s manual that will help you start the generator quickly.It also comes with a tool kit, battery charging cables, oil, and a funnel.
The Firman W01781 is an inverter generator.It has a case that is 20 inches long, 12.1 inches wide, and 16.7 inches high.So, it looks better than most other products with open frames.This kind of design is the most modern and easy way to make power for fun.The W01781 is called a lightweight portable generator, and it only weighs 45.9 pounds.The device is easy for one person to move, so its power can be used while on the go.The handle built into the case makes it even easier to carry.
The following charts show how some of the most important features of the Firman-W01781 compare to other generators with the same power output.
**Fuel efficiency is give in relative percentage, 0 being the lowest and 1 being the highest value. Please see below specification table for actual value.
|Yes, cable not included
|80 cc Firman Max-Pro Series OHV 4-stroke
|AC: 120V 60 Hz, DC: 12V
|Running amps (@120/240V)
|Peak amps (@120/240V)
|Run time @50% load
|Run time @25% load
|Automatic Voltage Regulator
|1x Duplex 120V 20A (5-20R)
|1x 5V USB port; 1x 12V 5A (cigarette lighter style)
|Low oil, overload and output ready
|Plastic, 0.9 gal
|Approx. dimen. (L x W x H)
|20 x 12.1 x 16.7 in
|Noise (lower limit)
|Low oil protection
|Oil, funnel, tool kit, and battery charging cables
- We compared more than 500 portable generators at 50% load. We found that there is “skewed right” distribution for the difference between 50% load and 25% load and the median comes at 1.43. With this number we converter all the 25% load runtime to 50% load. Same with the propane efficiency, where median is 1.38.
- For some generators where propane runtime was not given, we used NIST 1994 GGE (Gasoline Gallon Equivalent) formula: 5.66 lbs. of propane = 1 gal of gasoline. All propane runtime is for 20 lbs. propane tank (4.7 gallons).
- Unlike many other sites, we actually tried to find out information about each of the above requirements. However, we are human and are therefore capable of the odd oversight or mistake. Please let us know if you spot any missing or erroneous values so that we can fix them.
About the Manufacturer
Firman Power Equipment is a business with a recent but reputable history in the power equipment sector.It was founded in 1999.The Arizona-based business provides a vast array of goods, including power tools, automotive equipment, storage items, work clothing, but its assortment of generators of different shapes, sizes, and outputs stands out above the rest.Interestingly, Firman serves as a de facto distributor of China National Machinery Industry Corporation’s goods in the US and is a fully owned subsidiary of that business.
A warranty covers the Firman W01781 for up to 3 years.This warranty may not cover all parts of the generator or may only cover certain parts.Check out Firman’s warranty policies if you want to know more about the warranty on a Firman generator.You can also call their customer service line at 1-844-FIRMAN1 (844-347-6261).