- Wattage (Gas): 4,550 W / 3,650 W
- THD: < 25%
- Noise Level: 67 dBA
- Fuel Type: Dual Fuel (gasoline/propane)
- RV Ready: Yes
- Run Time@ 25% load: Unspecified
- Run Time@ 50% load: 14 h
- Weight: 119.5 lbs
Table Of Contents
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Description
The Firmin H03651 The Firman H03651 has 120V and a lot of power and versatility thanks to its dual-fuel technology. When powered by gasoline, it has a running wattage of 3,650W and a maximum wattage of 4,550W. When powered by propane, it has a rated 3300 watts and a peak of 4100 watts. The generator has a noise level of 67 dBA, which is quieter than background music. It has both a traditional pull-start and an easy-to-use electric starter (battery included). With a 5 gallon fuel tank, the H03651 can run for about 14 hours at 0.5 load on a full tank of gasoline (fuel consumption is approximately 0.36 GPH). With propane, it can go for up to 11 hours (on a 20 lbs tank – propane consumption around 0.43 GPH). Due to the H03651’s high THD (25%), it is not a good idea to use it to power sensitive electronic devices.
Outlets
On the control panel, there are 4 AC outlets for: Duplex 120V 20A (5-20R) GFCI; 120V 30A (L5-30R) receptacle; 120V 30A (TT-30R) receptacle. This Firman generator is ready for an RV because it has a TT-30R plug, where TT stands for “Travel Trailer”.
Features
On the control panel of the H03651, there is a handy meter that shows voltage, frequency, and lifetime hours. This makes it easier to keep track of its status and activity. A built-in fuel gauge makes it easy and quick to check how much gas is in the generator. In terms of safety, the generator can be used without worry because it has an automatic shut-off for low oil and an overload protection (circuit breaker). Along with the basic paperwork and an owner’s manual that will help you start the generator right away, the Firman H03651 comes with a funnel, propane hose, oil, and a tool kit.
Mobility
The Firman H03651 is made with a typical open frame that is L24.7 x W21.8 x H21.6 in, This gives it support and stability and lets you raise it above ground level. The generator is built to work well outside and in rough places. Even though this device is technically portable (meaning it can be moved), it can be hard to move and use without special tools because it weighs 119.5 pounds. Still, the generator is easy to move once it’s on the ground. This is because it has a wheel kit with 8-inch wheels and a folding handle, which is a good way to make up for its lack of maneuverability.
Product Videos
The following charts show how some of the most important features of the Firman-H03651 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.
Specifications
Generic
| Inverter | No |
| Fuel efficiency | 0.196 gal/kWh |
| Parallel capable | No |
| RV ready | Yes |
| Fuel | Dual Fuel (gasoline/propane) |
| Engine | 208 cc Firman Max-Pro Series OHV 4-stroke |
| Starting system | Recoil, Electric |
| Voltage | AC: 120V 60 Hz |
Power
| Gasoline | Propane | |
| Running watts | 3,650 W | 3,300 W |
| Starting watts | 4,550 W | 4,100 W |
| Running amps (@120/240V) | 30.4 amps | 27.5 amps |
| Peak amps (@120/240V) | 37.9 amps | 34.2 amps |
| Run time @50% load | 14 h | 11 h |
| Run time @25% load | Unspecified | Unspecified |
Control Panel
| GFCI outlets | Yes |
| Covered outlets | Yes |
| Automatic Voltage Regulator | Yes |
| AC outlets | 1x 120V 30A (L5-30R); 1x 120V 30A (TT-30R) |
| DC outlets | No |
| Data center | VFT |
| Indicators | No |
| Fuel tank | Steel, 5 gal |
| Fuel gauge | Yes |
Mixed
| Weight | 119.5 lbs |
| Approx. dimen. (L x W x H) | 24.7 x 21.8 x 21.6 in |
| Noise (lower limit) | 67 dBA |
| THD | < 25% |
| Compliance | CARB, EPA |
| Security | Low oil and overload protection |
| Spark arrestor | Yes |
| Accessories included | Oil, funnel, tool kit, propane hose, battery, and wheel kit |
| Warranty | 3 years |
- 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.
Warranty Information
A warranty covers the Firman H03651 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). Check Firman Website for more information.
