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Description
Zoom on the Firman P03501
In a nutshell, the Firman P03501 is a portable generator mostly geared towards:
- RV travellers looking for even more independence
- Homeowners who want to be able to use the most necessary devices in their household, even during a blackout
In the following paragraphs, we shall explore the power characteristics, available outlets, portability and any additional features of the device, along with its emission compliance parameters.
Power & Run Time
The Firman P03501
The Firman P03501 is powered by a 208 cc Firman Max-Pro Series OHV 4-stroke engine. It delivers 120V, runs on gasoline and offers a running wattage of 3550W as well as a peak wattage of 4450W.
At a noise rating of 68 dBA (less noisy than background music), the generator offers the possibility to start the device via a conventional pull-start mechanism.
With a fuel capacity of 5 gallons, the P03501 may run for around 14 hours at 50% load with a full tank (fuel consumption around 0.36 GPH).
Since the P03501 has a somewhat high THD (<25%), it is advisable to not use it for the powering of sensitive electronic devices.
- For camping/tailgating: 1 toaster oven, 1 rice cooker, 1 coffee maker, 1 blender and 1 mixer
- At home: 1 toaster oven, 1 waffle iron, 1 rice cooker, 1 blender and 1 set of 5 LED light bulbs
- For work: 1 electric fence (25 miles), 1 drain cleaner and 1 bug zapper
Outlets
The control panel features the upcoming 4 AC outlets:
This Firman generator is RV Ready, thanks to its TT-30R receptacle (TT stands for 'Travel Trailer').
Portability
The dimensions of the Firman P03501, which are L24.8 x W21.7 x H21.3 in, and its typical, open frame design provides stability and enables the generator to be raised above ground level. The device has been designed for tough environments and demanding outdoor use.
While the generator is considered to be technically 'portable' (in the sense that you can move it), manually lifting and transporting it may be challenging, due to its high weight of 108.5 lbs. Never less, thanks to a wheel kit (⌀8") and a folding handle (a decent solution to its lack of maneuverability), the generator can be easily moved, once placed the ground.
Features
The P03501's control panel
The P03501's status and activity may be monitored conveniently via the control panel, as it features a convenient meter showing you voltage, frequency and lifetime hours.
In addition to this info, a light indicator allows you to instantly see if the oil level is too low.
Thanks to a built-in fuel gauge, the generator allows you to quickly, conveniently and easily check the gas level at a glance.
From a security point of view, the generator is equipped with an automatic low oil shut-off and an overload protection (circuit breaker), giving you a peace of mind during use.
While the standard documentation and a user manual, helpful for starting the device promptly, come with the Firman P03501, the following accessories are also included: funnel, tool kit, cover and oil.
Emissions
The Firman P03501 is EPA approved, but NOT CARB-compliant. Thus, it cannot be purchased or sold in California.
Moreover, it features a spark arrestor, so it is adequate for use in forested areas.
Product Videos
The Firman P03501 versus other generators
The following charts are provided to give you an idea of how some of the key specs of the Firman P03501 compare to generators of similar power (between 3500 and 4500 W).
- As for its weight, the Firman P03501 weighs only 108.5 pounds, making it one of the lighter generators in the 3500-4500 rated wattage category. If weight is your top priority, one of the champions in this power category is the Energizer eZV4500, weighing just 78 pounds.
- Because this generator emits noise as low as 68 dBA, it can be considered to have a pretty average expected noise rating for a device of its power. If noise emissions are one of your priorities, you may be interested in the Westinghouse iGen4500, one of the least noisy generators similarly powerful as this one, rated for 52 dBA.
- The P03501 provides a higher run time than similarly powerful devices, reaching 14 hours at 50% load. If autonomy is your priority, one of the devices of a similar power output with the highest run time is the Honda EB4000, reaching 16 hours.
- The run time is important, but also hugely depends on the capacity of the fuel tank and doesn't mean much if we don't talk about fuel consumption as well. This generator has an estimated fuel consumption of roughly 0.36 GPH (gallon per hour) at a 50% load, rendering it somewhat average compared to devices of a similar output. If you wish to further improve in the area of fuel efficiency, the Westinghouse iGen4200, which boasts with a gas consumption of only 0.17 GPH, may be the right generator for you.
Price comparison
As you can see from this dynamic chart, when compared to other 3500-4500W generators, the Firman P03501 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
- RV Ready
- Lightweight for its kind (108.5 lbs)
- High run time
- Acceptable noise (68 dBA)
- Decent fuel efficiency
- No electric start
- Not CARB-compliant
Where to buy the Firman P03501?
Amazon 
eBay Features and Specifications
General
| Inverter | No |
|---|---|
| Portable | Yes |
| Parallel capable | No |
| RV ready | Yes |
| Fuel | Gasoline |
| Engine | 208 cc Firman Max-Pro Series OHV 4-stroke |
| Starting system | Recoil |
Power
| Voltage | AC: 120V 60 Hz |
|---|---|
| Running watts | 3550 W |
| Starting watts | 4450 W |
| Running amps | 29.6 amps |
| Peaks amps | 37.1 amps |
| Run time @50% load | 14 h |
| Run time @25% load | N/A |
Features
| GFCI outlets | No |
|---|---|
| Covered outlets | Yes |
| Automatic Voltage Regulation | Yes |
| AC outlets | 1x Duplex 120V 20A (5-20R) 1x 120V 30A (L5-30R) 1x 120V 30A (TT-30R) |
| DC outlets | No |
| Data center | VFT |
| Indicators | Low oil |
| Fuel tank | Steel, 5 gal |
| Fuel gauge | Yes |
Misc
| Weight | 108.5 lbs |
|---|---|
| Dimensions (L x W x H) | 24.8 x 21.7 x 21.3 in |
| Noise (lower limit) | 68 dBA |
| THD | < 25% |
| Emissions | EPA |
| Security | Low oil and overload protection |
| Spark arrestor | Yes |
| Neutral | Bonded to frame |
| Accessories included | Oil, funnel, tool kit and cover |
| Warranty | 3 years |
Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.
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 P03501 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. Alternatively, you can also contact their Customer Support: 1-844-FIRMAN1 (844-347-6261).
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