Firman H03654 - 3650/4550W Dual Fuel Generator With Electric Start
The Firman H03654 is a portable open frame dual fuel generator with a rated wattage of 3,650 W and a starting wattage of 4,550 W. (Read full specs)
Outbound Power 
JB Tools 
Amazon | Price history for the Firman H03654 |
|---|
| Highest Price $930.20 Lowest Price $584.99 Current Price $930.20 |
Page Content
Description
Zoom on the Firman H03654
In a nutshell, the Firman H03654 is a portable generator mostly geared towards:
- RV travellers looking for even more independence
- Occasional participants of outdoor events, competitions, concerts and festivals
- Homeowners who want to be sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures
In the following paragraphs, we shall explore the power characteristics, available outlets, portability, and any additional features of the device.
Power & Run Time
With its dual-fuel technology, the Firman H03654 delivers 120V, and offers power and flexibility. Running on gasoline, it boasts a running wattage of 3,650W and a peak wattage of 4,550W. When powered by propane, it delivers 3,300 running watts and 4,100 peak watts.
Enjoying a noise rating of 67 dBA (less noisy than an office), this generator offers the versatility of starting with either a standard recoil pull-rope starting mechanism or an easy-to-use and reliable electric starter (battery included).
The running time of the H03654, with its 5 gallons fuel capacity, can reach around 14 hours at 50% load on a full tank of gasoline (fuel consumption around 0.36 GPH). With propane, it can reach around 11 hours (on a 20 lbs tank - propane consumption around 0.43 GPH).
As the H03654 exhibits a THD of less than 25%, which is high, it is best avoided for powering sensitive electronic devices.
Outlets
The control panel provides the upcoming 4 AC outlets:
This Firman generator is RV Ready, thanks to its TT-30R receptacle (TT stands for 'Travel Trailer').
Portability
Measuring L24.7 x W21.8 x H21.6 in, the Firman H03654 showcases a classic open frame layout, offering stability and simple maintenance access to components, while facilitating air circulation. This type of design is ideal for tough environments and heavy outdoor use.
With a weight of 119.5 lbs, the generator is still labeled as 'portable,' denoting its ability to be moved, although its heaviness might restrict easy portability. Nevertheless, the restricted maneuverability is counteracted by its wheel kit (⌀8") and its folding handle, enabling easy shifting once the generator is set in place.
Features
The H03654's control panel
The control panel of the H03654 includes a convenient meter, showing voltage, frequency, and lifetime hours metrics, helpful for the monitoring of its status and activity.
The generator includes a built-in fuel gauge, a quick, easy and convenient method of checking the device’s gas level.
As far as security is concerned, the generator comes with an automatic low oil shut-off and an overload protection (circuit breaker), providing peace of mind during use.
The H03654 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 H03654 also comes with several accessories, including: funnel, tool kit, oil and propane hose.
The Firman H03654 versus other generators
The following charts are provided to give you an idea of how some of the key specs of the Firman H03654 compare to dual fuel generators of similar power (between 3500 and 4500 W).
- With a weight of 119.5 lbs, the Firman H03654 is notably on the heavier side among dual fuel generators in the 3500-4500 rated wattage range. if you wish to prioritize weight, the Pulsar PGX5250BiXCO is one of the top contenders in its power category, weighing only 64 pounds.
- This generator has a somewhat average expected noise for its type and power range, rated at 67 dBA. If noise emissions are one of your priorities, you may be interested in the Westinghouse iGen5000DF, one of the least noisy generators similarly powerful as this one, rated for 52 dBA.
- With a run time of around 14 hours at 50% load, the H03654 has one of the higher run times, compared to its similarly powerful peers. If run time is one of your main concerns, the Westinghouse iGen5000DF could be worth looking at. It boasts one of the highest run times among units of comparable power, lasting around 15 hours.
- While run time matters, it's heavily influenced by the fuel tank's capacity. Hence, it's important to consider fuel efficiency alongside. When operating at 50% load, the generator's fuel consumption is estimated at 0.36 GPH, placing it within the average range of gasoline usage among similarly powerful devices. If fuel consumption is your top priority, we suggest to check out the Westinghouse iGen5000DF, which has a fuel consumption of only 0.23 GPH and thus, is one of the most efficient devices in our database.
Price comparison
As you can see from these interactive charts, when compared to other 3500-4500W dual fuel generators, the Firman H03654 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
- Dual fuel
- CO Alert technology
- Several accessories included
- RV Ready
- Electric start
- High run time
- Acceptable noise (67 dBA)
- Decent fuel efficiency
- No remote start
- On the heavy side (119.5 lbs)
Do you own the Firman H03654 and agree (or disagree) with these strengths and weaknesses?
Let us know and write your own review.
Features and Specifications
| Inverter | No |
|---|---|
| Parallel capable | No |
| RV ready | Yes |
| Fuel | Dual Fuel (gasoline/propane) |
| Engine | 208 cc Firman Max-Pro Series OHV 4-stroke, cast iron sleeve |
| Starting system | Recoil, Electric |
| Warranty | 3 years |
| Voltage | AC: 120V 60 Hz |
| Gasoline | Propane | |
|---|---|---|
| Running watts | 3,650 W | 3,300 W |
| Starting watts | 4,550 W | 4,100 W |
| Running amps | 30.4 amps | 27.5 amps |
| Peak amps | 37.9 amps | 34.2 amps |
| Run time @50% load | 14 h | 11 h |
| Run time @25% load | Unknown | Unknown |
| GFCI outlets | No |
|---|---|
| Covered outlets | Yes |
| Automatic Voltage Regulation | Yes |
| AC outlets |
|
| DC outlets | No |
| Data center | VFT |
| Indicators | No |
| Fuel tank | Steel, 5 gal |
| Fuel gauge | Yes |
| Weight | 119.5 lbs |
|---|---|
| Approx. dimensions (L x W x H) | 24.7 x 21.8 x 21.6 in |
| Noise (lower limit) | 67 dBA |
| THD | < 25% |
| Compliance | EPA, ANSI/PGMA G300-2023 |
| Security | Low oil and overload protection, CO monitoring |
| Spark arrestor | Yes |
| Neutral | Floating |
| Accessories included | Oil, funnel, tool kit, propane hose, battery, and wheel kit |
| Country of origin | China |
| Series | Hybrid |
| UPC | 840876136546 |
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 H03654 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 |
| Hair dryer | 1800 | 1900 | |
| Washing machine | 900 | 1650 | |
| Total | 2892 W | 3892 W | |
| For camping | Radiant heater | 1300 | 1300 |
| RV refrigerator | 180 | 600 | |
| RV AC (11,000 BTU) | 1010 | 1600 | |
| Blender | 400 | 850 | |
| Total | 2890 W | 3480 W | |
| For work | Table saw | 1800 | 4500 |
| Total | 1800 W | 4500 W |
How much oil does it take? (Asked December 14, 2019)
The oil capacity is 20.3 oz.
When connecting this generator to propane with the supplied hose,.....do I just connect the propane tank with the hose to the generator? Is the propane regulator built into the generator? Or do I need to buy a separate regulator? Thank you. (Asked December 10, 2020)
The regulator is included with the LPG hose.
Couldn't find the right answer for you? Ask your own question.
