Firman W03663OF - 3650/4500W Open Frame Inverter Generator With Remote Start
The Firman W03663OF is a portable open frame inverter generator with a rated wattage of 3,650 W and a starting wattage of 4,500 W. (Read full specs)
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Description
Zoom on the Firman W03663OF
In a nutshell, the Firman W03663OF is a portable inverter generator mostly geared towards:
- RV travellers who wish to upgrade their experience to another level
- People occasionally participating in sporting competitions, open-air performances and outdoor festivals
- Homeowners who want to be able to use the most necessary devices in their household, even during a blackout
- Tailgating and campground aficionados with the desire of enjoying power anywhere they go
The subsequent sections will explore in detail its power characteristics, the diverse outlets it provides, its overall portability, and the supplementary features it offers.
Power & Run Time
The Firman W03663OF
Running on gasoline, the Firman W03663OF operates with a 208 cc OHV 4-stroke engine with cast iron sleeve, delivering 120V, with a running wattage of 3,650W and a peak wattage of 4,500W. Moreover, the parallel capability (parallel kit included) allows for increasing of power output when paired with another similar or compatible unit, providing increased energy capacity and reliability for diverse needs.
Operating with a noise rating of 67 dBA (less noisy than an office), this inverter generator offers two starting options: a traditional recoil pull-start mechanism and a user-friendly and hassle-free electric starter (battery included). In addition, the W03663OF also supports remote starting, enhancing user convenience (key fob included).
With its 6 gallons fuel tank, the W03663OF can operate for up to 22 hours when fully fueled (with fuel usage averaging around 0.27 GPH).
Delicate electronics can be plugged in the AC outlets safely, as the W03663OF generates a clean sine wave, reaching a <3% Total Harmonic Distortion (THD).
Outlets
The control panel provides the upcoming 4 AC outlets:
Moreover, it presents 3 DC outlets: there's two 5V USB ports (USB-A) with which you may charge electronics, for example mobile phones or tablets, conveniently and a 12V 8A (cigarette lighter style) receptacle offering a convenient battery charging option.
With its 14-50R outlet, this Firman unit is RV-ready for owners with a 50-amp service in their RVs.
Important note: The 14-50R outlet is normally 120/240V. However, this unit does not produce 240V. This outlet is here for your convenience, but should only be used to power 120V appliances. In addition, since the generator provides a maximum of 3650 running watts, it will not be possible to draw the full 50 amps from the outlet.
Portability
Measuring L24.5 x W24.1 x H23 in, the classic open frame build of the Firman W03663OF delivers stability and easy maintenance access to components, facilitating air circulation. This type of design is ideal for tough environments and heavy outdoor use.
With a weight of 116 lbs, the generator is still labeled as 'portable,' denoting its ability to be moved, although its heaviness might restrict easy portability. Nonetheless, the limited maneuverability is compensated for by utilizing its set of wheels (⌀9") and its folding handle, which facilitates shifting once the generator is set on the ground.
Features
The W03663OF's control panel
The W03663OF and its control panel include a convenient meter, showing voltage, frequency, and lifetime hours metrics. This feature comes handy when monitoring its status and activity.
In addition to this info, the device's light indicators will illuminate to indicate if the generator is on overload, the oil level is too low and the generator is ready.
The fuel level of the inverter generator can be determined quickly, easily, and conveniently with the help of its built-in fuel gauge.
From a security standpoint, the product offers an overload protection (circuit breaker) and an automatic low oil shut-off, allowing you to use it with a peace of mind.
The W03663OF also benefits from Firman’s CO Alert carbon monoxide shutdown, which automatically shuts down the engine when harmful levels of carbon monoxide accumulate around the generator or a CO Alert fault occurs.
With the basic documentation and an owner's manual (opens in a new tab), letting you start the generator quickly, the Firman W03663OF also comes with several accessories, including: tool kit, key fob, RV adapter, oil, funnel and battery charging cables.
Product Video
The Firman W03663OF versus other generators
The following charts are provided to give you an idea of how some of the key specs of the Firman W03663OF compare to inverter generators of similar power (between 3500 and 4500 W).
- Since the generator weighs in at a dry weight of 116 lbs, the Firman W03663OF belongs in the expected weight range for inverters which can produce between 3500 and 4500 rated watts. if you wish to prioritize weight, the WEN 56432iX is one of the top contenders in its power category, weighing only 52.9 pounds.
- When comparing it to devices with a similar running wattage, this inverter generator's lowest noise level of 67 dBA puts it alongside the noisier units. If you are concerned with noise, check out the Westinghouse iGen5000DF, which is one of the least noisy generators in its power range, with a noise rating of just 52 dBA.
- The W03663OF provides one of the highest run time among similarly powerful inverters, reaching up to 22 hours at 25% load.
- Though run time is a significant parameter, it's closely tied to the generator's fuel tank size. To get a comprehensive understanding, fuel efficiency must also be taken into account. This inverter generator is somewhat less fuel-efficient than devices of comparable output: its estimated fuel consumption reaches 0.27 GPH at a 25% load. If you wish to acquire one of the most gasoline efficient products of this power range, the Champion 201319, with a fuel consumption of 0.16 GPH could be in your good books.
Price comparison
As you can see from these interactive charts, when compared to other 3500-4500W inverter generators, the Firman W03663OF 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
- CO Alert technology
- Several accessories included
- RV adapter included
- Remote start
- Parallel kit included
- Inverter
- High run time
- Decent weight (116 lbs)
- No 240V output
- On the noisy side (67 dBA)
- Low fuel efficiency
Do you own the Firman W03663OF and agree (or disagree) with these strengths and weaknesses?
Let us know and write your own review.
Features and Specifications
| Inverter | Yes |
|---|---|
| Parallel capable | Yes |
| RV ready | No |
| Fuel | Gasoline |
| Engine | 208 cc OHV 4-stroke, cast iron sleeve |
| Starting system | Recoil, Electric, Remote |
| Warranty | 3 years |
| Voltage | AC: 120V 60 Hz, DC: 12V |
|---|---|
| Running watts | 3,650 W |
| Starting watts | 4,500 W |
| Running amps | 30.4 amps |
| Peak amps | 37.5 amps |
| Run time @50% load | 18 h |
| Run time @25% load | 22 h |
| GFCI outlets | No |
|---|---|
| Covered outlets | Yes |
| Automatic Voltage Regulation | Inverter |
| AC outlets |
|
| DC outlets | 2x 5V USB port (USB-A) 1x 12V 8A (cigarette lighter style) |
| Data center | VFT |
| Indicators | Low oil, overload and output ready |
| Fuel tank | Steel, 6 gal |
| Fuel gauge | Yes |
| Weight | 116 lbs |
|---|---|
| Approx. dimensions (L x W x H) | 24.5 x 24.1 x 23 in |
| Noise (lower limit) | 67 dBA |
| THD | < 3% |
| Compliance | CARB, EPA |
| Security | Low oil and overload protection, CO monitoring |
| Spark arrestor | Yes |
| Neutral | Floating |
| Accessories included | Oil, funnel, tool kit, key fob, RV adapter, battery charging cables, battery, parallel cables, and wheel kit |
| Country of origin | China |
| Series | Whisper |
| UPC | 840876136638 |
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 W03663OF 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 | AC (10,000 BTU) | 1500 | 2200 |
| Refrigerator (energy star) | 192 | 1192 | |
| Vacuum cleaner | 1075 | 1175 | |
| Game console | 150 | 150 | |
| Total | 2917 W | 3917 W | |
| For camping | RV AC (11,000 BTU) | 1010 | 1600 |
| RV refrigerator | 180 | 600 | |
| Electric grill | 1650 | 1650 | |
| Set of 5 LED light bulbs | 55 | 55 | |
| Cell phone charger | 20 | 20 | |
| Total | 2915 W | 3505 W | |
| For work | Grinder | 1400 | 2500 |
| Demolition hammer | 1260 | 1260 | |
| Electric fence (25 miles) | 250 | 250 | |
| Total | 2910 W | 4010 W |
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