Zoom on the Firman H07552
In summary, the Firman H07552 is a portable generator especially useful for:
- Food van owners who know that just a short power outage could lose them hundreds of dollars
- Professionals who want to ensure that a power failure will not prevent them from working
Power & Run Time
Thanks to its dual-fuel technology, the Firman H07552 delivers 120/240V and offers power and versatility. When gasoline-powered, it benefits from a running wattage of 7500W and a peak wattage of 9400W. When propane-powered, it has 6750 rated watts and 8450 peak watts.
With a noise rating of 74 dBA (just slightly more noisy than a vacuum cleaner), the generator features a simple traditional pull-start mechanism, but also a simple and elegant electric starter (battery included).
The running time of the H07552, with its 8 gallons fuel capacity, can reach around 12 hours at 50% load on a full tank of gasoline (fuel consumption around 0.67 GPH). With propane, it can reach around 5 hours (estimation based on a 20 lbs tank - propane consumption around 0.94 GPH).
As the H07552 has a relatively high THD (<25%), it is not recommended to use it to power sensitive electronic devices.
The control panel includes the following 5 AC outlets:
Even though this Firman generator isn't quite RV Ready, its L5-30R receptacle allows an easy RV connection via an L5-30P to TT-30R adaptor. Besides, as it features a twist-lock L14-30R receptacle, the H07552 is transfer switch ready: in case of a power outage, you will be easily able to connect it to a breaker box and power your household.
The Firman H07552 has a conventional, open frame design, of the following dimensions: L29.8 x W26.4 x H26.3 in, which offers support and allows it to be raised above ground level. This type of design is ideal for tough environments and heavy outdoor use.
Although this generator is technically considered 'portable' (in the sense that it can be moved), its 212 lbs make it incredibly difficult to manually lift and transport. Still, once it is on the ground, its wheel kit (⌀10") and its folding handle can easily solve the issue of low mobility and allow for easy relocation of the device.
The control panel of the H07552 includes a convenient meter, which displays voltage, frequency and lifetime hours, 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.
Security-wise, this product benefits from an overload protection (circuit breaker) and an automatic low oil shut-off, which gives you a complete peace of mind when using it.
Apart from the typical documentation and an owner's manual (opens in a new tab), which lets you start it right away, the Firman H07552 also is packed along with the following accessories: cover, tool kit, funnel, propane hose and oil.
The Firman H07552 is EPA-approved and CARB-compliant. Thus, selling and purchasing this generator is allowed in each of the 50 states, including California.
Moreover, it features a spark arrestor, so it is adequate for use in forested areas.
The Firman H07552 versus other generators
The following charts are provided to give you an idea of how some of the key specs of the Firman H07552 compare to generators of similar power (between 7000 and 8000 W).
- As its weight is 212 pounds, the Firman H07552 falls in the expected weight range of the devices in the 7000-8000 rated wattage category. If weight matters to you, one of the champions in this power range is the Sportsman GEN85KIDF with only 133 pounds.
- As this generator can emit noise as low as 74 dBA, it finds itself in the average expected noise for this kind of power. If you’d prefer a less noisy device, one of the most quiet devices, which share the same power range with this one, is the A-iPower SUA8000iSF, whose lowest noise levels reach just 65 dBA.
- Since the H07552 boasts with a run time of around 12 hours at 50% load, it can be safely judged as a device of a higher run time than most generators of a comparable output. Furthermore, considering the run times, one of the generators which have a roughly same power output, with the highest autonomy, is the A-iPower SUA8000iSF, as it provides around 13 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, with an estimated fuel consumption of just 0.67 GPH (gallon per hour) at 50% load, is one of the more fuel efficient generators, for the previously mentioned wattage range. If not satisfied with the afore-mentioned fuel consumption, you may wish to check out the A-iPower SUA8000iSF. With a fuel consumption of as little as 0.52 GPH, it is one of the most efficient generators currently on the market.
As you can see from this interactive chart, when compared to other 7000-8000W generators, the Firman H07552 is on the cheap side of the price range.
It can therefore be a really good buy if you're looking to acquire a budget generator.
The bottom line
- Several accessories included
- GFCI Outlets
- Electric start
- Dual Fuel
- High run time
- Fuel efficient
- Decent weight (212 lbs)
- Acceptable noise (74 dBA)
- No remote start
Features and Specifications
|Fuel||Dual Fuel (gasoline/propane)|
|Engine||439 cc Firman Max-Pro Series OHV 4-stroke|
|Starting system||Recoil, Electric|
|Voltage||AC: 120/240V 60 Hz|
|Running watts||7500 W||6750 W|
|Starting watts||9400 W||8450 W|
|Running amps (@120/240V)||62.5/31.3 amps||56.3/28.1 amps|
|Peaks amps (@120/240V)||78.3/39.2 amps||70.4/35.2 amps|
|Run time @50% load||12 h||5 h *|
|Run time @25% load||N/A||N/A|
|Automatic Voltage Regulation||Yes|
|AC outlets|| |
|Fuel tank||Steel, 8 gal|
|Approx. dimensions (L x W x H)||29.8 x 26.4 x 26.3 in|
|Noise (lower limit)||74 dBA|
|Security||Low oil and overload protection|
|Neutral||Bonded to frame|
|Accessories included||Oil, funnel, tool kit, propane hose, cover and battery|
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.
* Propane runtime is our own estimation, based on a 20 lbs tank and NIST 1994 GGE (Gasoline Gallon Equivalent) formula: 5.66 lbs of propane = 1 gal of gasoline.
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.
The Firman H07552 is covered under a lifetime warranty. 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|
|Microwave (1000 watts)||1500||1500|
|Sump pump (1/2 hp)||1050||2150|
|Refrigerator (energy star)||192||1192|
|Total||5992 W||7492 W|
|For camping||RV AC (11,000 BTU)||1010||1600|
|Set of 5 LED light bulbs||55||55|
|Total||5995 W||6585 W|
|For work||Table saw||1800||4500|
|Air compressor (1 hp)||1600||6100|
|Total||4880 W||9380 W|
Of the 4 outlets is only one a GFCI outlet? So can a non-GFCI transfer switch be connected to the 120/240 V 30 amp outlet without tripping the generator breaker which happens with a GFCI outlet? (Asked July 10, 2019)
Correct. Only the 5-20R duplex is GFCI
Can it run on a homes in ground propane supply (Asked August 15, 2019)
Below-ground propane is no different than above-ground propane. So there's no reason why it wouldn't work.
I have two circuit boxes I would like to power and selectively/manually pick and chose from. Can I use the 50 amp and 30 amp plugs simultaneously to drive both boxes (one for each) with attention given to the max loads of the generator? (Asked November 06, 2019)
You can absolutely use these two outlets simultaneously.
Does it have a clean enough sine wave to recharge a Tesla in a emergency at 240V? (Asked November 25, 2019)
The THD stated by Firman for the H07552 is <25%. You'd have to contact Tesla to know whether that harmonic distortion is suitable to recharge your car. You can also refer to our article on charging a tesla.
Is the 50 amp plug wired for a RV? (Asked March 16, 2020)
The 50-amp outlet is a NEMA 14-50R. Wiring of 14-50R receptacles is four-wire (ground, neutral, hot, hot).
What would be the best transfer switch to use with this generator in order to provide power to my house? (Asked April 16, 2020)
We do not really like the term "best", as we think it's highly subjective. That said, the Reliance Controls 31406CRK (opens in a new tab) is one of the best-sellers on Amazon, and exactly fits the running wattage of the H07552.
If you use it to power a 50amp rv can you charge sensitive items in the camper electrical plug? Ie a cell phone or laptop (Asked July 12, 2020)
This unit has a THD <25%, which is too high to power equipment with sensitive electronics.
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