The Firman H07552 is a portable open frame dual fuel generator with a rated wattage of 7,500 W and a starting wattage of 9,400 W. (Read full specs)
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Amazon | Price history for the Firman H07552 |
|---|
| Highest Price $1,179.00 Lowest Price $1,179.00 Current Price $1,179.00 |
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Description
Zoom on the Firman H07552
In short, the Firman H07552 is a portable generator adequately designed 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 in need of safely powering high-intensity work or lighting equipment
- RV travellers who wish to upgrade their experience to another level
The subsequent sections will explore in detail its power characteristics, the diverse outlets it provides, its overall portability, and the supplementary features it offers.
Power & Run Time
The Firman H07552
Thanks to its dual-fuel technology, the Firman H07552 provides a 120/240V output and offers both versatility and power. When utilizing gasoline, it delivers a running wattage of 7,500W and a starting wattage of 9,400W. Alternatively, when operating on propane, it provides 6,750 running watts and 8,450 starting watts.
At a noise rating of 74 dBA (just slightly more noisy than a shower), this generator provides the choice between a traditional recoil pull-start mechanism or a hassle-free and practical electric starter (battery included) for starting.
Regarding its running time, the H07552, with a 8 gallons fuel tank, can operate for around 12 hours at 50% load with a full gasoline tank (with fuel consumption estimated at around 0.67 gallons per hour). It also offers around 5 hours (estimation based on a 20 lbs tank - propane consumption around 0.94 GPH) of operation when using propane.
The quite high THD (<25%) of the H07552 makes it unsuitable for powering sensitive electronic devices.
Outlets
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, the H07552's twist-lock L14-30R receptacle makes it transfer switch ready, enabling hassle-free connection to your breaker box for powering your home during outages.
Portability
At L30.2 x W27.5 x H26.3 in, the standard open frame design of the Firman H07552 delivers stability alongside easy maintenance access to components and good air cooling. The featured design is ideal for the outdoors and all tough environments.
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). Nonetheless, the limited maneuverability is compensated for by utilizing its wheel kit (⌀10") and its folding handle, which facilitates shifting once the generator is set on the ground.
Features
The H07552's control panel
To facilitate status and activity monitoring, a convenient meter, providing voltage, frequency, and lifetime hours data are embedded in the control panel of the H07552.
Thanks to its built-in fuel gauge, the generator allows you to quickly, conveniently, and easily check the gas level at a glance.
From a security standpoint, the generator is furnished with an automatic low oil shut-off and an overload protection (circuit breaker), ensuring peace of mind during operation.
Besides the classic documentation and an owner's manual (opens in a new tab) to get you promptly started, the Firman H07552 also comes with some accessories: tool kit, propane hose, cover, oil and funnel are included.
Product Videos
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 dual fuel generators of similar power (between 7000 and 8000 W).
- Since the generator weighs in at a dry weight of 212 lbs, the Firman H07552 belongs in the expected weight range for dual fuel devices which can 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.
- Given its rated noise level of 74 dBA, this generator aligns with the average expected noise rating for devices of similar type and power. If noise emissions are one of your priorities, you may be interested in the DuroMax XP9500iH, one of the least noisy generators similarly powerful as this one, rated for 61 dBA.
- Since the H07552 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.
- Even though run times are undoubtedly important, they are dependent on the fuel capacity to a large extent. For a more wholesome picture, we must take into consideration the fuel consumption of the generator. This generator can be considered as fuel-efficient, due to its low estimated fuel consumption of only 0.67 GPH (gallon per hour) at 50% load, within the aforementioned wattage range. If you wish to further improve in the area of fuel efficiency, the Cummins Onan P9500df, which boasts with a gas consumption of only 0.6 GPH, may be the right generator for you.
Price comparison
As you can see from these interactive charts, when compared to other 7000-8000W dual fuel generators, the Firman H07552 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
- Several accessories included
- GFCI Outlets
- 4 different AC outlet types
- Electric start
- High run time
- Fuel efficient
- Decent weight (212 lbs)
- Acceptable noise (74 dBA)
- No remote start
Features and Specifications
| 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 |
| Gasoline | Propane | |
|---|---|---|
| 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 | 5 h * |
| Run time @25% load | Unknown | Unknown |
| GFCI outlets | Yes |
|---|---|
| Covered outlets | Yes |
| Automatic Voltage Regulation | Yes |
| AC outlets |
|
| 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, cover, battery, and wheel kit |
| Country of origin | China |
| Series | Hybrid |
| UPC | 840876175521 |
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.
Warranty Information
The Firman H07552 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 | Electric fry pan | 1500 | 1500 |
| Dish washer | 1500 | 3000 | |
| AC (10,000 BTU) | 1500 | 2200 | |
| Sump pump (1/2 hp) | 1050 | 2150 | |
| Refrigerator (energy star) | 192 | 1192 | |
| Satelite receiver | 250 | 250 | |
| Total | 5992 W | 7492 W | |
| For camping | RV AC (11,000 BTU) | 1010 | 1600 |
| RV refrigerator | 180 | 600 | |
| Hair dryer | 1800 | 1900 | |
| Electric grill | 1650 | 1650 | |
| Radiant heater | 1300 | 1300 | |
| 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 | |
| Grinder | 1400 | 2500 | |
| Bug zapper | 80 | 80 | |
| 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.
Does H07552 have to be grounded (Asked September 20, 2020)
It is always safer to ground your generator.
Is there a shut off valve on the gasoline tank (Asked October 30, 2020)
The fuel (gasoline) valve is closed when the fuel selector switch is on the “OFF” position.
Do I have to hook up the propane to use the gasoline option??? (Asked February 15, 2021)
A propane tank is not required to operate the unit on gasoline.
How should you run the gas out to prepare it for storage? (Asked August 20, 2022)
Long term storage instructions are located page 31 of the owner's manual (opens in a new tab). They include all you need to know about gasoline removal/drainage.
How much oil is needed to change oil (Asked March 05, 2023)
Engine oil capacity is 37.2 fl. oz.
What type of oil is recommended (Asked April 10, 2025)
For general, all-temperature use, SAE 10W-30 is recommended.
Couldn't find the right answer for you? Ask your own question.
User Reviews
Started up fine when purchased(Hurricane Laura) powered several small appliances and small window unit. Problem setting the hertz’s as the long screw used for adjustment was the incorrect size for the threads of the adjusting lever. Managed to get Hz adjusted and contact Az to let them know they had a quality issue. Some one should had recognized this during assembly. I replace with the correct threaded screw and it adjusted as required there after. Unit much noiser than advertised, still, ran reliably for several days until utility power restored.
I bought from Costco on sale mid 2021. I immediately did a2 he test run on both propane & gasoline, no issues on about a 2500wt load. Put some fuel additive in the gas for storage. Another 2hr test, oil check 1yr later, no problem.
This past 2 weeks I had three 5-11hr power off days due to solar & main panel upgrade/installs.
Worked like a champ. 4 refrigerators, 4 big screens, wifi, cable, several lights and a portable ac unit.
Didn’t use s drop of oil.
Did the job I needed it to do very well.
However,
1) problem with fuel dial. Was on the propane setting and wouldn’t click past off to go to gasoline setting…
2) Way noisier than the suggested 75db… more like 95+.(I expected loud but not this loud)
Conclusion: if served the purpose perfectly. I was able to place barricades around as sound barriers the helped reduce sound… so I’m very satisfied and rate it at 85 out of 100
Avoid this one I purchased a new one but did not unbox or need it until it was out of warranty and it broke a slip ring on the rotor after 5minutes of test time no replacement offered unless I was to buy the rotor @$300 then find a shop to install now I have an useless generator and will NEVER BUY ANYTHING AGAIN FROM CHINA IF ITS MADE IN USA .
Yep..pretty noisy. When you store it, to run the gas out,point the arrow at the 1 o-clock position. This is nowhere in the manual.
Wired it to a Reliance transfer switch. Works fine upon testing, but only have 1 hour on the run clock. Stored from Sept 2022 and had to recharge the battery to get it started on 3/2023.
Junk.. No support, burns oil excessively, louder than most, won’t run on propane.. Dealer ignores warranty. Do not buy
Having to own and run a generator for the frist time after a hurricane this firmanHo7552 generator came up a winner it made things a lot easier after hurricane IDA that hit louisiana Aug 29 2021 I did not lose any food and slept in comfort with A/C running ? thanks friman five stars.
A generator is not just a nice-to-have where I live. I’m atop of a mountain on 18 acres. Have my own well, and my only outside connection is electricity.
I need something reliable.
We were under a serious storm for the last 3 days. Tornado warnings and watches all day yesterday. Lost power early in the morning for 4 hours. Hooked up the 220VAC cable, open the breaker to the world and close the alternate power one. (I have a mechanical interlock)
I had the gen setup to run on LP. Though lower power, I prefer not worrying about gas going sour. I have 1800 pounds of LP along with several small bottles.
Went to start on LP and it started but the moment I plugged the cord into the gen, it would shutdown. After switching out bottles, and the same result, I switched to ethanol free gas and it ran for the next 4 hours.
I called Firman support this morning. The tech walked me through some checked and had me make sure the solenoid relay that detects the LP gas pressure and signals the starter. It seemed to stick the first couple of attempts but gave a distinct click on the 3rd. Then it started and I placed under load and it worked.
I believe the relay got sticky due to not being run for 9 months. But I learned some and got it going.
5 *s for their tech support.
Great price. It’s your standard Chinese made generator. Have had for over a year and used for 3 days during ice storm, again during a couple random storms and regular runs (about 30 min) every other month or so to keep it ready and I have never had to charge starter battery. It is loud af but that is easily solved with a couple pieces of plywood. Bottom line is it does what it’s supposed to do. Buy a couple pieces of plywood when you buy gen and you’ll be fine.
Not worth the money.
Fuel selector when moved to the propane position could not be returned to the gasoline position. Waiting for resolution from Firman.
I purchased this generator after Hurricane Laura hit. I’ve read some negative reviews on this generator, but I took a chance and bought it. It has exceeded my expectations. The price was below other similar generators and the dual fuel option is nice. It powers my home nicely when back fed through the dryer plug. It ran all the lights, TV, outlets, fridge, stand freezer, and 2 window A/C units for 11 hours on 1 tank of gas. When the 2 window units were turned off, the generator ran the hot water heater so we could take a hot shower. We lost electricity for 23 days due to Hurricane Laura and 7 days due to Hurricane Delta and the generator has ran great with no issues! It made life bearable with no electricity. The oil is very easy to change as well. My only complaint is that it’s loud.
Purchased my HO7552 Firman in September, 2020. Assembly was straightforward with easily understandable instructions. Noise level is higher than expected; however, power generated is good. Wired directly into my house following hurricane damage to power air conditioners, water well pump, lighting and the entire house. Generator has performed well with one exception. Fuel choke control handle vibrated until it no longer resides in the off position but migrates to the choke position, causing surging and improper fuel mixture while running … easily remedied; however, this is an indication that quality control testing was inadequate. Unit ran 24 hours per day with regular oil change frequencies, through two back to back storm damage power outage periods – approximately six weeks to two months total before power was restored. Cannot complain except for the choke handle matter. Will see how it performs in the future, as I plan to use it around the farm for remote welding and portable power. Am somewhat concerned that this item is manufactured in China. Would prefer a U.S. product, but, this item was priced well and in immediately availability from a large box store during storm.
Purchased new from L***s Oct 2020 in Louisiana. Bought this model specifically because of the dual fuel. Generator difficult to start if and when it will start at all on LP. I have never put gasoline in it and really don’t want to unless its is the only option. I have sent Firman two emails, webpage instant message, instant message on Facebook and a post to their Facebook site explaining my problem and asking for assistance…. No reply. Tried to return generator to L***s for an exchange or refund and they refused and said that I would have to go thru the manufacturer.
Decent generator,electric start quit working, I use the pull rope.
Very easy to use, nice design.
Easy to start, easy to use, nice looking design, so far no problem.
Bought for the butane use , stated okay , but ” no ” 120 volt ” plug in working , and the ” 240 volt ” plug in only registered 120 . This was from the start , never could use it , called the 800 phone number and never got a real person to answer the phone . Brought it back where I bought it and told them it was defective because it never worked from the start , my answer , sorry no returns policy is you have to contact the manufacture or send it back to the manufacture ! We’re from Louisiana the manufacture is in AZ. After arguing with the manager they finally took it back . Wouldn’t by another unless I lived right next to the manufacture , duh !!
Same mimimal quality as Eastern Tool,different label
I’ve had this generator for 2 yrs started Everytime but leaked gas float was stuck quit leaking after it ran a few minutes changed oil be sure to watch how much oil you put in it says 37.2 oz but don’t over fill takes less than that easy gas gauge to read the wife fills it with gas when I’m at work when the power goes out she has no problem starting it also
Works better than advertised
I AM STILL IN THE 5 HOURE BRAKE IN PERIOUD AND ALL IS PROCEDING WELL. MY ONLY COMPLAINT THUS FAR IS THAT THE UNIT IS NOISYER THAN EXPECTED. IT’S WORKIND AS DISCRIBED.