No CO sensor
Zoom on the Firman H07553
In summary, the Firman H07553 is a portable generator especially useful for:
- Food truck owners who do not wish to see their business interrupted under any circumstances
- Homeowners who want to be sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures
- Professionals in need of safely powering high-intensity work or lighting equipment
- RV travellers looking for even more independence
In the sections ahead, the power characteristics, availability of various outlets, the portability, and any additional features of the device shall be discussed, including its emission compliance information.
Power & Run Time
The dual-fuel technology of the Firman H07553 allows for an output of 120/240V and provides superb power and versatility. If gasoline-powered, the device provides a running wattage of 7500W and a starting wattage of 9400W. If propane-powered, it gives 6750 rated watts and 8450 starting 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 H07553, with a fuel capacity of 8 gallons, reaches a run time of around 12 hours at 50% load utilizing gasoline (fuel consumption around 0.67 GPH). Alternatively, it can reach a run time of around 6 hours (on a 20 lbs tank - propane consumption around 0.78 GPH) with propane.
Since the H07553 has a somewhat high THD (<25%), it is advisable to not use it for the powering of sensitive electronic devices.
The control panel includes the following 5 AC outlets:
If you own an RV with a 50-amp service, you can consider this Firman unit as RV-ready, as it features a 14-50R outlet. Its L5-30R receptacle can also be used for a simple RV connection with an L5-30P to TT-30R adaptor. In addition, as it features a twist-lock L14-30R receptacle, the H07553 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 dimensions of the Firman H07553, which are L30.2 x W27.5 x H26.3 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.
As the generator's weight is 212 pounds, manually moving it or transporting it may be challenging, despite the fact that it is technically considered 'portable' (movable). However, its challenging mobility is solved by its wheel kit (⌀10") and its folding handle, which will ease its displacement, once it is on the floor.
The H07553's control center features a convenient meter, which displays voltage, frequency and lifetime hours to aid you with the monitoring of its status and activity.
A built-in fuel gauge allows for a quick, easy and convenient check of the fuel level of the generator.
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 H07553 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. It’s a welcomed additional security feature, but don’t forget to always take your generator outside (opens in a new tab).
With the basic documentation and an owner's manual (opens in a new tab), letting you start the generator quickly, the Firman H07553 also comes with several accessories, including: funnel, cover, tool kit, extension cord, propane hose and oil.
The Firman H07553 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, making it usable in forested areas.
The unit also meets the ANSI/PGMA G300-2018 safety and performance requirements.
The Firman H07553 versus other generators
The following charts are provided to give you an idea of how some of the key specs of the Firman H07553 compare to dual fuel generators of similar power (between 7000 and 8000 W).
- With a dry weight of 212 pounds, the Firman H07553 finds itself in the expected weight range for dual fuel generators able to produce between 7000 and 8000 rated watts. Regarding dry weight, one of the champions in the same power range is the Sportsman GEN85KIDF, with a dry weight of only 133 lbs.
- This generator has a somewhat average expected noise for its type and power range, rated at 74 dBA. 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 Genmax GM9000iED, whose lowest noise levels reach just 62 dBA.
- Since the H07553 boasts with a run time of around 12 hours at 50% load, it can be safely judged as one of the dual fuel devices with the highest run time among those of a comparable output.
- While the run time is an important parameter, it is dependent on the fuel tank’s capacity and thus, doesn’t say much on its own unless we consider fuel consumption as well. Standing at an estimated 0.67 GPH (gallon per hour) at a 50% load, this generator is somewhat average in this area compared to other devices, within the aforementioned wattage range. If you are concerned with gasoline efficiency, having a fuel consumption of just 0.55 GPH, the Pulsar PG10000B16 is a device you could look out for.
As you can see from this interactive chart, when compared to other 7000-8000W dual fuel generators, the Firman H07553 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
- GFCI Outlets
- Electric start
- Dual Fuel
- High run time
- Decent weight (212 lbs)
- Acceptable noise (74 dBA)
- Decent fuel efficiency
- No remote start
Features and Specifications
|Fuel||Dual Fuel (gasoline/propane)|
|Engine||439 cc 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|
|Peak amps (@120/240V)||78.3/39.2 amps||70.4/35.2 amps|
|Run time @50% load||12 h||6 h|
|Run time @25% load||Unknown||Unknown|
|Automatic Voltage Regulation||Yes|
|AC outlets|| |
|Fuel tank||Steel, 8 gal|
|Approx. dimensions (L x W x H)||30.2 x 27.5 x 26.3 in|
|Noise (lower limit)||74 dBA|
|Compliance||CARB, EPA, ANSI/PGMA G300-2018|
|Security||Low oil and overload protection, CO monitoring|
|Neutral||Bonded to frame|
|Accessories included||Oil, funnel, tool kit, extension cord, propane hose, cover, battery, and wheel kit|
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.
The Firman H07553 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||Sump pump (1/2 hp)||1050||2150|
|Furnace fan (1/2 hp)||875||2350|
|Refrigerator (energy star)||192||1192|
|Total||5967 W||7442 W|
|For camping||Radiant heater||1300||1300|
|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|
Does this genset produce pure sine wave AC? I need to be sure it is safe to use in home for emergency backup electricity that is safe for expensive electronics and refrigerators. (Asked June 10, 2021)
What type of oil does it use? (Asked September 01, 2021)
For general, all-temperature use, SAE 10W-30 is recommended.
can this be connected to natural gas? (Asked September 02, 2021)
The unit was designed to run on gasoline or propane only.
Can you add gas to the generator while it is running ? (Asked January 28, 2022)
Absolutely not. This would be a fire hazard. We recommend reading our generator safety guide.
Is the HO7553 compatible with Generlink? (Asked May 24, 2022)
There should be no issue connecting this unit to Generlink.
Need wiring diagram (Asked June 27, 2022)
The wiring diagram can be downloaded here (opens in a new tab).
Where can the SN be Found? (Asked August 10, 2022)
Serial number should be on a sticker located on the lower part of the fuel tank, folding handle side.
Where can I buy just the fuel line for the propane side (Asked September 15, 2022)
Parts and accessories can be purchased directly through Firman: 1-844-347-626.
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