No CO sensor
Zoom on the Firman H07553
In summary, the Firman H07553 is a portable generator especially useful for:
- Food van owners who know that just a short power outage could lose them hundreds of dollars
- Homeowners in need of an emergency backup power for their essentials
- Professionals who want to be able to deliver results, even during a power failure
- RV travellers who wish to upgrade their experience to another level
Power & Run Time
Thanks to its dual-fuel technology, the Firman H07553 delivers 120/240V and offers power and versatility. When gasoline-powered, it benefits from a running wattage of 7,500W and a peak wattage of 9,400W. When propane-powered, it has 6,750 rated watts and 8,450 peak watts.
With a noise rating of 74 dBA (just slightly more noisy than a dishwasher), the generator features a simple traditional pull-start mechanism, but also a convenient and easy-to-use electric starter (battery included).
Regarding its running time, the H07553, with a 8 gallons fuel capacity can operate for around 12 hours at 50% load with a full tank of gasoline (fuel consumption around 0.67 GPH). When using propane, it can run for around 6 hours (on a 20 lbs tank - propane consumption around 0.78 GPH).
The H07553 is unsuitable for the powering of sensitive electronic devices due to its high THD (<25%).
The control panel features 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, due to the featured twist-lock L14-30R receptacle, the H07553 is transfer switch ready: you may connect it to a breaker box to power your household during a power outage.
With its dimensions of L30.2 x W27.5 x H26.3 in, the conventional, open frame design of the Firman H07553 offers stability and allows the generator to be raised above ground level. This type of design is ideal for tough environments and heavy outdoor use.
Since the generator weighs 212 lbs, it will be incredibly difficult to manually lift it and transport it, even though it is technically considered to 'be portable' (in the sense that it is movable). 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 H07553 includes a convenient meter showing you voltage, frequency and lifetime hours, helpful for the monitoring of its status and activity.
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 overload protection (circuit breaker) and an automatic low oil shut-off, giving you a peace of mind during use.
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.
While the standard documentation and an owner's manual (opens in a new tab), helpful for starting the device promptly, come with the Firman H07553, the following accessories are also included: funnel, extension cord, tool kit, oil, cover and propane hose.
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, which makes it suitable for use 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).
- As its weight is 212 pounds, the Firman H07553 falls in the expected weight range of the dual fuel devices in the 7000-8000 rated wattage category. If you are concerned by weight, one of the champions in the above-mentioned power range is the Sportsman GEN85KIDF, with a dry weight of just 133 pounds.
- Among the generators of a comparable running wattage, this generator with a lowest noise of 74 dBA can be judged as noisy. For those who are looking for a less noisy device, we suggest the Champion 201175. With just 61 dBA, it is one of the most quiet devices in this power range.
- As the H07553 features an autonomy of around 12 hours at 50% load, it has one of the highest run times in comparison to the other dual fuel generators of its power range.
- Run times are important, yet thanks to their dependence on the fuel capacity, they should be judged along with the fuel consumption of the device. As this generator uses an estimated 0.67 GPH (gallon per hour) at a 50% load, it finds itself in the average gasoline consumption range of similar products. If you wish to acquire one of the most gasoline efficient products of this power range, the Pulsar PG10000B16, with a fuel consumption of 0.55 GPH could be in your good books.
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
- Dual Fuel
- CO Alert technology
- Several accessories included
- GFCI Outlets
- 4 different AC outlet types
- Electric start
- High run time
- Decent weight (212 lbs)
- Decent fuel efficiency
- No remote start
- On the noisy side (74 dBA)
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||7,500 W||6,750 W|
|Starting watts||9,400 W||8,450 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|
|Country of origin||China|
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||Microwave (1000 watts)||1500||1500|
|AC (10,000 BTU)||1500||2200|
|Electric fry pan||1500||1500|
|Sump pump (1/2 hp)||1050||2150|
|Refrigerator (energy star)||192||1192|
|Total||5992 W||7092 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|
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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