Firman H08051 Review: A Dependable Dual Fuel Powerhouse for Diverse Needs

FIRMAN H08051 Dual Fuel Portable Generator










Other Users' Experience



  • Dual fuel
  • Extended run time
  • Fuel efficient
  • Electric start
  • Powerful


  • A bit heavy

TL;DR: The Firman H08051 is a dependable and versatile generator, offering a powerful dual fuel option and consistent performance. While it has its nuances, its overall value and reliability make it a commendable choice for diverse power needs.

In the vast landscape of portable generators, the Firman H08051 emerges as a beacon of reliability and versatility.

Crafted by the reputable Firman Power Equipment, this model seamlessly bridges the gap between performance and convenience. Its dual fuel capability allows you to choose between gasoline or propane, depending on what’s more convenient for you.

At its core, the 439 cc Firman Max-Pro Series OHV 4-stroke engine ensures a steady and robust output, making it an ideal companion for varied scenarios – be it an adventurous off-grid escapade, a precautionary measure for unexpected power outages, or a reliable power source on demanding job sites.

As we delve deeper into this Firman H08051 review, you’ll discover the features and benefits that position the H08051 as a dependable portable power solution.

General Rating

Here’s a breakdown of our main score, the Editor’s Rating, for the Firman H08051. It is based on a detailed review of the Firman H08051 dual fuel generator, where we assessed it against more than 15 different criteria.

Category Rating
Editor’s Rating 8.65
Performance 8.8
Power output 9.2
Fuel efficiency and run time 9.5
Noise level 7.5
Convenience 8
Portability 7
Ease of Use 9
Reliability 8.8
Reliability and Durability 8.7
Emission Compliance 9
Warranty 8.5
Value for Money 8.6
Price 7.5
Features 9.5
Build Quality 8.8
User Experience 9

To learn more about our Rating system, visit this page.

Check out our curated ranking lists featuring the Firman H08051 as a top choice:

Firman H08051 Video Reviews

Firman H08051 Generator Review



Key Takeaways

  • The Firman H08051’s 10000 Watt power output ensures reliability across a range of applications.
  • Its dual fuel flexibility adds a layer of convenience and adaptability.
  • While it has a slightly elevated noise level, the power it offers justifies the trade-off. Its fuel efficiency, particularly when using gasoline, is noteworthy, leading to longer operational periods.
  • In essence, for those in search of a steadfast performer, whether for home backup, work sites, or outdoor escapades, the Firman H08051 stands as a top choice that delivers consistently.

Power Output

The Firman H08051 boasts a commendable power output that ensures you’re equipped for a range of scenarios. With its robust 439 cc Firman Max-Pro Series OHV 4-stroke engine, this generator offers a substantial 10000 starting watts when fueled by gasoline. This peak power ensures that you can kick-start even the most demanding appliances or tools. Once running, it stabilizes at a continuous 8000 watts, which is more than sufficient to power multiple devices simultaneously.

The table below provides a mix of household appliances and tools that the Firman H08051 can power simultaneously without surpassing its capacity. Note that the starting watts total is higher due to the initial surge required to start certain appliances, but the generator can handle this as long as not all items are started simultaneously.

Item Running Watts Starting Watts
Refrigerator (18 cu. ft.) 150 1200
Portable Heater 1500 3000
Window Air Conditioner (10,000 BTU) 1200 3600
Washing Machine 1150 2300
Microwave Oven (1000W) 1000 2000
Television 200 400
Desktop Computer 600 800
Blender 400 850
Garage Door Opener 550 1650
Total 7250 16800

If you opt for propane, the H08051 still impresses with 9,050 starting watts, settling to a running wattage of 7,250. This flexibility in power output based on fuel choice ensures that you’re never left stranded, regardless of your fuel preference.

In terms of power distribution, the generator provides a balanced 120/240V, making it suitable for both household appliances and heavier tools or equipment. The peak amps of 83.3/41.7 (for gasoline) and 75.4/37.7 (for propane) at 120/240V respectively, further underline its capability to handle sudden surges without faltering.

In conclusion, the Firman H08051’s power output is one of its standout features, ensuring that you have a reliable power source that can handle both everyday devices and more demanding equipment with ease.

Run Time and Fuel Efficiency

Fuel efficiency and run time are crucial factors when considering a portable generator, as they determine how long you can rely on the unit without needing a refuel. Let’s delve into how the Firman H08051 fares in these aspects.

The Firman H08051 showcases commendable fuel efficiency, consuming an average of 0.67 gallons per hour (GPH) at 50% load. When we compare this to other generators in its class, it’s evident that the H08051 is more fuel-efficient than the average, which stands at 0.73 GPH. This means you’re getting more power for less fuel, which is not only cost-effective but also environmentally friendly.

Run time is another area where the Firman H08051 shines. Offering a whopping 12 hours at 50% load on gasoline, it’s at the higher end of the spectrum when compared to other generators. The average run time for similar units is around 9 hours, but the H08051 surpasses this by a good margin, ensuring you have extended periods of uninterrupted power.

In conclusion, the Firman H08051’s fuel efficiency and run time make it a top contender for those seeking a reliable power source that won’t have them frequently refueling. Its performance in these areas is notably above average, justifying the high rating. 

Noise Level

The Firman H08051 isn’t the quietest generator we’ve reviewed but its noise level is within an acceptable range for most applications. Operating at 74 dBA, it’s slightly louder than the average for generators in its category. This sound intensity is comparable to a running dishwasher, which is noticeable and can be disruptive in certain settings.

Given its noise output, the H08051 is more apt for off-the-grid locations or job sites where the ambient noise is already elevated. It’s an excellent choice for powering heavy-duty tools and machinery in such environments. 

However, for those planning to use it in regular RV parks or serene campsites, the noise might be a concern. The generator’s sound could be intrusive in such quiet settings, potentially causing disturbances to neighbors or fellow campers.

In conclusion, while the Firman H08051 offers a myriad of benefits, its noise level is something to consider based on your intended use. It’s a powerhouse for remote locations and job sites but might not be the first choice for campsites.



Key Takeaways

  • The Firman H08051 is designed with user convenience at its core.
  • Its dual starting system, featuring both recoil and electric start, ensures a hassle-free startup experience.
  • The intuitive control panel layout simplifies operations, making it user-friendly even for generator novices.
  • Despite its substantial weight, the inclusion of a folding handle and wheel kit enhances its portability, making transportation more manageable.
  • The dual fuel capability offers users the choice between gasoline and propane, adding flexibility based on fuel availability.
  • Overall, the Firman H08051 prioritizes user convenience, making it a practical choice for those who value ease of use and adaptability.


The Firman H08051, weighing in at 212 lbs, is on the heavier side when compared to some other portable generators. However, it’s designed with user convenience in mind.

The generator comes equipped with a wheel kit, which significantly aids in its mobility. These sturdy wheels, combined with the ergonomic handle, make maneuvering the unit relatively straightforward, even on uneven terrains. This design choice ensures that, despite its weight, you can move the H08051 around with relative ease.

Another aspect to consider is its dimensions, which are 30.2 x 27.5 x 26.3 inches. While it’s not the most compact model available, its design is still reasonably streamlined, allowing for easier storage and positioning.

In conclusion, while the Firman H08051 might not be the lightest or most compact generator on the market, its thoughtful design features, like the wheel kit and handle, ensure that portability isn’t a significant concern.

Ease of Use

The Firman H08051 has been designed with user convenience at the forefront, ensuring that even those unfamiliar with generators can operate it with minimal hassle.

One of the standout features of the H08051 is its dual starting system. It offers both recoil and electric start options. The electric start, in particular, provides a quick and effortless way to get the generator running, eliminating the need for manual pulling. This feature is especially beneficial in colder climates where starting a generator can sometimes be challenging.

The generator’s control panel is intuitively designed, with clearly labeled outlets and switches. This layout ensures that you can quickly identify and access the functions you need. Additionally, the inclusion of GFCI outlets and covered outlets provides an added layer of safety and protection.

Another user-friendly feature is the VFT data center, which keeps you informed about vital stats like voltage, frequency, and overall runtime. This information is crucial for monitoring the generator’s performance and ensuring it operates within optimal parameters.

Lastly, the Firman H08051 comes with an array of accessories, including oil, a funnel, a tool kit, a propane hose, and a battery. These inclusions mean you have everything you need to get started right out of the box.

In summary, the Firman H08051 scores high on ease of use. Its user-centric features, combined with its comprehensive accessory kit, make it a breeze to operate, even for those new to portable generators.



Key Takeaways

  • The Firman H08051 stands as a beacon of dependability in the world of portable generators.
  • Its robust construction and quality components vouch for its durability, ensuring it can withstand regular use.
  • Safety features, including low oil and overload protection, further attest to its reliability, safeguarding both the generator and connected devices.
  • Users have consistently praised its unwavering performance, especially during crucial times like power outages.
  • The 3-year warranty underscores the brand’s confidence in the product, offering users added peace of mind.
  • In summary, the Firman H08051 is a trustworthy companion, promising consistent performance and longevity.

Reliability and Durability

The Firman H08051 stands as a testament to robust engineering and quality construction. With its powerful engine, sturdy build, and essential safety features, it promises consistent performance and longevity.

At the heart of the H08051 is its 439 cc Firman Max-Pro Series OHV 4-stroke engine. This engine is known for its robust performance and longevity, ensuring that the generator delivers consistent power output over extended periods. The engine’s design also ensures efficient fuel combustion, which not only aids in fuel efficiency but also contributes to the unit’s overall lifespan.

The generator’s build quality is evident in its sturdy construction. The steel fuel tank, combined with its high-quality exterior casing, provides a layer of protection against the elements and potential physical damage. This robust construction ensures that the H08051 can withstand the rigors of regular use, whether on job sites, camping trips, or as a home backup.

Safety features, such as low oil and overload protection, further enhance the unit’s reliability. These features ensure that the generator operates within safe parameters, preventing potential damage and prolonging its lifespan.

However, like all machines, regular maintenance is key. While the H08051 is built to last, ensuring timely oil changes, filter replacements, and general upkeep will go a long way in guaranteeing its longevity.

In conclusion, the Firman H08051 stands out as a reliable and durable portable generator. Its robust engine, quality construction, and safety features all contribute to its reputation as a dependable power source.

Emission Compliance

The Firman H08051 meets both CARB and EPA standards, ensuring it adheres to stringent emission regulations and is environmentally conscious.


The Firman H08051 comes with a 3-year warranty, reflecting the brand’s confidence in its product and offering users peace of mind regarding potential repairs and replacements. A commendable duration compared to many in its class.

Value for Money


Key Takeaways

  • The Firman H08051 offers a compelling blend of performance and features at its price point.
  • While positioned slightly above the average market price, its array of premium features and dual-fuel capability ensure you’re getting substantial value for your investment.
  • Its robust build quality and reliability further enhance its value proposition, ensuring longevity and consistent performance.
  • The inclusion of a comprehensive accessory kit adds to the overall value, providing everything needed right out of the box.
  • All things considered, the Firman H08051 presents a balanced equation of cost and functionality, making it a worthy investment for those seeking both quality and value.


The Firman H08051 is priced slightly above the average for generators in its category. Considering its array of features, dual-fuel capability, and the brand’s reputation for quality, it offers good value for the investment, making it a reasonable choice for those seeking a balance between cost and performance.

Key Features

The Firman H08051 boasts a plethora of features designed to enhance your user experience and ensure optimal performance. Here are the standout attributes:

  • Dual Fuel Capability: Allows operation on either gasoline or propane, offering flexibility in fuel choice.
  • Powerful Engine: Equipped with a 439 cc Firman Max-Pro Series OHV 4-stroke engine for consistent power output.
  • Dual Starting System: Provides both recoil and electric start options for ease of use.
  • Safety Measures: Includes low oil and overload protection to ensure safe operation.
  • VFT Data Center: Keeps you informed about vital stats like voltage, frequency, and overall runtime.
  • GFCI Outlets: Ensures added safety, especially in damp conditions.
  • Automatic Voltage Regulation: Maintains consistent power output and protects connected devices.
  • Sturdy Construction: Features a steel fuel tank and high-quality exterior casing for durability.
  • Emission Standards: Meets both CARB and EPA regulations.
  • Comprehensive Accessory Kit: Comes with oil, funnel, tool kit, propane hose, battery, and wheel kit, ensuring you have everything you need right out of the box.

Design and Build Quality

The Firman H08051 is a testament to meticulous design combined with sturdy construction. At first glance, its robust exterior, dominated by a resilient steel fuel tank, immediately conveys durability. This tank is designed to withstand the rigors of regular use, ensuring that the generator remains protected from potential dents and damages.

The control panel is another highlight of its design. Organized intuitively, it ensures that even those unfamiliar with generators can navigate its functions with ease. Every switch, outlet, and indicator is clearly labeled, reducing the learning curve and enhancing your user experience.

Furthermore, Firman has incorporated ergonomic features to enhance the generator’s usability. The handle, designed for a comfortable grip, combined with the wheel kit, makes transporting the relatively heavy unit a breeze. These features not only improve portability but also showcase Firman’s dedication to user convenience.

The overall build quality is further accentuated by the protective covers on the outlets, ensuring safety, especially in damp conditions. Additionally, the generator’s frame is solid, providing a stable base and further protection to the internal components.

In essence, the Firman H08051’s design and build quality are a blend of functionality, user-friendliness, and durability. It’s evident that Firman has invested time and resources to ensure that you get a product that not only looks good but also stands the test of time.

Other Users’ Experience


The Firman H08051 has garnered significant attention and feedback from its users. Many have described it as a solid and reliable generator, appreciating its flawless performance and the value it offers for its price. Its quality and durability are often highlighted, making it a favorite among those who require a dependable power source.

However, while the generator is praised for its capabilities, several users have noted its loudness. Despite this, many also mentioned that the noise level is within an acceptable range for most applications, especially given its power output. This suggests that while it might not be the quietest on the market, its noise level is still manageable for the power it delivers.

One of the standout features that users frequently highlight is the dual fuel capability. This allows for flexibility between gasoline and propane, offering choices based on availability and preference. Some users did mention that while using propane, the consumption can be relatively high, but the convenience of having a dual fuel option outweighs this minor drawback.

The generator’s ease of use is another point of praise. The electric start feature, in particular, is a favorite among users, making the startup process smooth and hassle-free. The control panel is intuitive and user-friendly, ensuring even those unfamiliar with generators can operate it with ease.

Despite its weight, many users found the Firman H08051 to be portable. The folding handle and wheels have been designed thoughtfully, making the generator relatively easy to move around, especially when considering its power capacity.

In conclusion, the Firman H08051 has received positive feedback for its reliability, power output, and dual fuel capability. Its noise level might be a point of contention for some, but overall, it remains a top choice for those seeking a powerful and flexible generator solution.

Firman H08051 Alternatives

While the Firman H08051 is an impressive generator in its own right, there are other notable contenders in the same class and power range worth considering. Here are two such alternatives that might catch your interest:

Westinghouse WGen9500DF

The Westinghouse WGen9500DF is a dual fuel generator that offers a similar power range to the Firman H08051. With a peak power of 12,500 watts on gasoline and 11,200 watts on propane, it’s a robust contender in the power department. It also boasts features like remote start, a durable steel frame, and an extended run time. The Westinghouse brand is renowned for its reliability and customer service, making this generator a solid alternative for those seeking a blend of power and trustworthiness.

For more detailed information on the Westinghouse WGen9500DF, you can check out our WGen9500DF review.

DuroMax XP12000EH

Another dual fuel option, the DuroMax XP12000EH, offers a peak power of 12,000 watts on gasoline and 11,400 watts on propane. Its sturdy construction, combined with features like an electric start, multiple power outlets, and a user-friendly interface, make it a worthy competitor. DuroMax is known for its durable generators and the XP12000EH is no exception. Its versatility in fuel choice and consistent performance make it a viable alternative for those considering the Firman H08051 but want to explore other reputable brands.

Check out our in-depth review of the DuroMax XP12000EH for more insights.

Strengths and Weaknesses of the Firman H08051

Here are the main strengths and weaknesses we have identified after conducting our review of the Firman H08051.


  • Dual Fuel Capability: The ability to run on both gasoline and propane offers flexibility and convenience.
  • Robust Power Output: With 8000 running watts on gasoline, it can handle a variety of appliances and tools.
  • Reliability: Built with quality components, it promises consistent performance.
  • Extended Run Time: Offers up to 12 hours of operation at 50% load on gasoline.
  • Fuel Efficient: With a fuel consumption of 0.67 GPH at 50% load, it’s more efficient than many in its class.
  • Electric Start: Ensures a hassle-free startup experience, eliminating the need for manual recoil.
  • Comprehensive accessory kit: Comes with everything needed to get started, including oil, funnel, and a propane hose.
  • User-Friendly Control Panel: Intuitive layout makes operations straightforward, even for beginners.


  • A bit heavy: Weighing 212 lbs, it’s on the heavier side, although the wheel kit does aid in portability.

Features and Specifications


Product Name Firman H08051
Brand Firman Power Equipment
Inverter No
Parallel capable No
RV ready No
Fuel Dual Fuel (gasoline/propane)
Engine 439 cc Firman Max-Pro Series OHV 4-stroke
Starting system Recoil, Electric
Warranty 3 years
Voltage AC: 120/240V 60 Hz
Running watts (gasoline) 8,000 W
Starting watts (gasoline) 10,000 W
Running amps (@120/240V) (gasoline) 66.7/33.3 amps
Peak amps (@120/240V) (gasoline) 83.3/41.7 amps
Run time @50% load (gasoline) 12 h
Run time @25% load (gasoline) Unknown
Running watts (propane) 7,250 W
Starting watts (propane) 9,050 W
Running amps (@120/240V) (propane) 60.4/30.2 amps
Peak amps (@120/240V) (propane) 75.4/37.7 amps
Run time @50% load (propane) 5 h *
Run time @25% load (propane) Unknown
GFCI outlets Yes
Covered outlets Yes
Automatic Voltage Regulation Yes
AC outlets 1x Duplex 120V 20A (5-20R) GFCI, 1x 120V 30A (L5-30R), 1x 120/240V 30A (L14-30R), 1x 120/240V 50A (14-50R)
DC outlets No
Data center VFT
Indicators No
Fuel tank Steel, 8 gal
Fuel gauge Yes
Weight 212 lbs
Approx. dimensions (L x W x H) 30.2 x 27.5 x 26.3 in
Noise (lower limit) 74 dBA
THD < 25%
Compliance CARB, EPA
Security Low oil and overload protection
Spark arrestor Yes
Neutral Bonded to frame
Accessories included Oil, funnel, tool kit, propane hose, battery, and wheel kit
Country of origin/UPC (when no country) China
Series Hybrid
UPC 840876180518

Is FIRMAN Power Equipment a good generator brand?

FIRMAN Power Equipment is a renowned name in the generator industry, known for its commitment to innovation, quality, and performance. Established by SUMEC Group, a core member of China National Machinery Industry Corporation (SINOMACH), FIRMAN has its roots deeply embedded in advanced engineering and technological prowess. With its headquarters located in China, the company has expanded its reach globally, making a significant mark in various international markets.

Over the years, FIRMAN has consistently delivered products that cater to the diverse needs of its customers, from homeowners seeking backup power solutions to professionals in need of reliable power sources for job sites. Their generators are a testament to their dedication to quality and performance, often being lauded for their durability and efficiency. The brand’s emphasis on customer feedback and continuous improvement has positioned them as a trusted name in the generator market. For those seeking a reliable brand with a proven track record, FIRMAN Power Equipment stands as a solid choice.

Go to our detailed Firman generators review to learn more about the brand and their best-performing generators.

Who Should Buy the Firman H08051?

The Firman H08051 is an ideal choice for individuals and professionals who require a robust and versatile power source. Its dual fuel capability makes it perfect for those who want flexibility in fuel choice, especially in areas where one type of fuel might be scarce. With its substantial power output, it’s well-suited for homeowners seeking a reliable backup during power outages, as well as for contractors and tradespeople needing consistent power on job sites. Its features and performance make it a great fit for off-the-grid living where a dependable power source is essential.

However, due to its noise level, the Firman H08051 might not be the best choice for those looking for a quiet portable generator.  Additionally, those seeking a lightweight, ultra-portable generator for light tasks might find this model a bit overpowered for their needs.

Conclusion: Is It Worth Buying Firman H08051?

In our Firman H08051 review, the generator stands out as a reliable and versatile generator, suitable for various needs. Whether you require it for home backup or off-grid adventures, this generator’s dual fuel option offers flexibility,  and its power output ensures consistent performance. While it may not be the quietest option available, its features, such as extended run time and robust build, make it a worthy consideration. Weighing its features and user feedback, it’s clear that this generator offers good value for its price. If you’re seeking a dependable power source that delivers on its promises, the Firman H08051 is a solid pick.

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