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Firman H07552 Spec Review

The Firman H07552 is a portable open frame dual fuel generator with a rated wattage of 7500 W and a starting wattage of 9400 W.

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Description

The FIRMAN H07552 generator features 9,400 starting Watts and 7,500 running watts (8,450/6,750 LPG). Power is supplied by our Max Pro Series 439cc FIRMAN engine which runs cool and efficient thanks to its Phoenix Fat Head Block. Our Whisper Series muffler keeps the H07552 quieter and efficient, and our spark arrester has been approved by the USDA Forest Service. The industry-leading 8 gallon fuel capacity provides a whopping 12 hours of run time. Starting is as simple as the push of a button on the H07552. (source: Firman (opens in a new tab))

Zoom on the Firman H07552

In a nutshell, the Firman H07552 is a portable generator mostly geared towards:

  • Food van owners who know that just a short power outage could lose them hundreds of dollars
  • Professionals in need of safely powering high-intensity work or lighting equipment

The following sections will present you in detail its power characteristics, the different outlets it offers, its overall portability, the extra features it benefits from, and any relevant emission compliance details.

Power & Run Time

The Firman H07552 in use

The Firman H07552

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 shower), the generator features a conventional pull-start mechanism, but also a convenient and easy-to-use electric starter (battery included).

As for its running time, the H07552, along with its 8 gallons fuel capacity, can run for around 12 hours at 50% load with a full tank filled with gasoline (fuel consumption around 0.67 GPH). If propane is used, it can operate for 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.

Outlets

The control panel features the following 5 AC outlets:

Duplex 120V 20A (5-20R) GFCI
120V 30A (L5-30R) receptacle
120/240V 30A (L14-30R) receptacle
120/240V 50A (14-50R) receptacle

This Firman generator isn't quite RV Ready, but it features an L5-30R receptacle, allowing a simple RV connection through an L5-30P to TT-30R adaptor. Besides, because the H07552 is equipped with a twist-lock L14-30R receptacle, it is transfer switch ready: it can power your home during a power outage, as it can be easily connected to your breaker box to power your household.

Portability

With its dimensions of L30.2 x W27.5 x H26.3 in, the conventional, open frame design of the Firman H07552 offers stability and allows the generator to be raised above ground level. The design is ideal for rough environments and demanding 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). 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.

Features

Panel of the Firman H07552

The H07552's control panel

The H07552's status and activity may be monitored conveniently via the control panel, as it features a convenient meter, which displays voltage, frequency and lifetime hours.

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 automatic low oil shut-off and an overload protection (circuit breaker), allowing you to use it with a peace of mind.

Along the basic documentation and an owner's manual (opens in a new tab), useful for starting the generator right away, the Firman H07552's package also includes these accessories: tool kit, oil, funnel, cover and propane hose.

Emissions

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 and thus, may be used in forested areas.

Product Video

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).

  • With a dry weight of 212 pounds, the Firman H07552 finds itself in the expected weight range for 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.
  • Since the generator's noise is rated at 74 dBA, it has the roughly average expected noise for a device of similar power. If noise emissions are important to you, one of the least noisy generators of this power range is the A-iPower SUA8000iSF with only 65 dBA.
  • As the H07552 features an autonomy of around 12 hours at 50% load, it has a higher run time than an average generator of its power range. If concerned with autonomy, one of the products of a comparable power output, which offers the highest run time, is the Predator 9000, boasting with 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. At an estimated fuel consumption of 0.67 GPH (gallon per hour) at 50% load, this generator is a rather fuel efficient one within its wattage category. If fuel consumption is your top priority, we suggest to check out the A-iPower SUA8000iSF, which has a fuel consumption of only 0.52 GPH and thus, is one of the most efficient devices in our database.

Price comparison

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

STRENGTHS:
  • Inexpensive
  • Several accessories included
  • GFCI Outlets
  • Electric start
  • Dual Fuel
  • High run time
  • Fuel efficient
AVERAGE SPECS:
  • Decent weight (212 lbs)
  • Acceptable noise (74 dBA)
WEAKNESSES:
  • No remote start

Do you own the Firman H07552 and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterNo
PortableYes
Parallel capableNo
RV readyNo
FuelDual Fuel (gasoline/propane)
Engine439 cc Firman Max-Pro Series OHV 4-stroke
Starting systemRecoil, Electric
VoltageAC: 120/240V 60 Hz
Power
 GasolinePropane
Running watts7500 W6750 W
Starting watts9400 W8450 W
Running amps (@120/240V)62.5/31.3 amps56.3/28.1 amps
Peak amps (@120/240V)78.3/39.2 amps70.4/35.2 amps
Run time @50% load12 h5 h *
Run time @25% loadUnknownUnknown
Features
GFCI outletsYes
Covered outletsYes
Automatic Voltage RegulationYes
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 outletsNo
Data centerVFT
IndicatorsNo
Fuel tankSteel, 8 gal
Fuel gaugeYes
Misc
Weight212 lbs
Approx. dimensions (L x W x H)30.2 x 27.5 x 26.3 in
Noise (lower limit)74 dBA
THD< 25%
EmissionsCARB, EPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralBonded to frame
Accessories includedOil, funnel, tool kit, propane hose, cover, battery, and wheel kit
Warranty3 years
SeriesHybrid

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.

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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?
Examples of items that can be simultaneously powered.
The examples below are based on a maximum load of 80% and estimated wattages. For a more accurate estimation, use our generator sizing calculator.
ItemRunning WattsStarting Watts
At homeMicrowave (1000 watts)15001500
AC (10,000 BTU)15002200
Electric fry pan15001500
Sump pump (1/2 hp)10502150
Refrigerator (energy star)1921192
Satelite receiver250250
Total5992 W7092 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Hair dryer18001900
Electric grill16501650
Radiant heater13001300
Set of 5 LED light bulbs5555
Total5995 W6585 W
For workTable saw18004500
Air compressor (1 hp)16006100
Grinder14002500
Bug zapper8080
Total4880 W9380 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.

Couldn't find the right answer for you? Ask your own question.

Firman H07552
6.8 Total Score
14 reviews
Add your review
Price
7.5
Value
6.6
Quality
6.1
Performance
7
14 Reviews
Show all Most Helpful Highest Rating Lowest Rating Add your review
  1. 4.4
    Price
    80
    Value
    100
    Quality
    90
    Performance
    80

    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.

    + PROS:
    • So far I'm happy with the preformance
    - CONS:
    • Noisy! More than expected.
    Helpful(5) Unhelpful(3)You have already voted this
  2. 4.25
    Price
    40
    Value
    100
    Quality
    100
    Performance
    100

    Works better than advertised

    + PROS:
    • Worked better than advertised with low draw was able to run a 10 gal propane tank for 15 hours and 4.5 gallons of gas for 7 hours.
    - CONS:
    • Extremely noisy, should have ear protection on when it is running.
    Helpful(7) Unhelpful(5)You have already voted this
  3. 4.25
    Price
    90
    Value
    90
    Quality
    70
    Performance
    90

    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

    + PROS:
    • Low cost
    - CONS:
    • Float sticks when sitting for awhile
    Helpful(3) Unhelpful(4)You have already voted this
  4. 1.25
    Price
    50
    Value
    20
    Quality
    10
    Performance
    20

    Same mimimal quality as Eastern Tool,different label

    + PROS:
    • Bought thru zorro
    - CONS:
    • Fell apart, literally, muffler fell apart, elec. start failed, recoil broke....
    Helpful(5) Unhelpful(8)You have already voted this
  5. 1.15
    Price
    60
    Value
    10
    Quality
    10
    Performance
    10

    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 !!

    + PROS:
    • Dual fuel was why I bought it , nice feature if gas is hard to get .
    - CONS:
    • Who are you gonna get to work on it ?
    Helpful(7) Unhelpful(3)You have already voted this
  6. 5
    Price
    100
    Value
    100
    Quality
    100
    Performance
    100

    Easy to start, easy to use, nice looking design, so far no problem.

    + PROS:
    • good run time, high power, good price
    - CONS:
    • the THD is high witch is not good for electronic, Gen is loud.
    Helpful(5) Unhelpful(1)You have already voted this
  7. 4.25
    Price
    100
    Value
    80
    Quality
    80
    Performance
    80

    Very easy to use, nice design.

    + PROS:
    • Good performance, easy to start
    - CONS:
    • Very bad Post Sale service. Is imposible to talk with the srvice department (I don´t know if really exists)
    • Nowhere to buy parts, the web page doesn´t have options to buy (only covers, extensions).
    Helpful(4) Unhelpful(0)You have already voted this
  8. 3.75
    Price
    90
    Value
    60
    Quality
    70
    Performance
    80

    Decent generator,electric start quit working, I use the pull rope.

    + PROS:
    • Reasonably priced
    - CONS:
    • 40 hours and the electric start quit
    Helpful(2) Unhelpful(0)You have already voted this
  9. 0.5
    Price
    10
    Value
    10
    Quality
    10
    Performance
    10

    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.

    + PROS:
    • Nothing... generator will not start and Manufacturer will not respond.
    - CONS:
    • Everything. Do not buy from Firman and think twice before buying from L***s.
    Helpful(3) Unhelpful(2)You have already voted this
  10. Avatar
    Douglas Fontenot October 19, 2020 at 2:11 pm
    3.75
    Price
    90
    Value
    70
    Quality
    50
    Performance
    90

    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.

    + PROS:
    • Cost was admirable. Starts easily and has 12 hour run time. So far, a reliable machine. Produces electrical power at the rate advertised.
    - CONS:
    • Rattles, vibrates and is quite loud. Choke assembly became non-functional from plastic usage and vibration. Chinese product.
    Helpful(2) Unhelpful(0)You have already voted this
  11. 4.9
    Price
    100
    Value
    100
    Quality
    90
    Performance
    100

    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.

    + PROS:
    • Great quality generator
    • Price
    - CONS:
    • Loud
    Helpful(3) Unhelpful(0)You have already voted this
  12. 4.25
    Price
    100
    Value
    90
    Quality
    60
    Performance
    90

    Fuel selector when moved to the propane position could not be returned to the gasoline position. Waiting for resolution from Firman.

    + PROS:
    • Fills the bill.
    - CONS:
    • Fuel sellector
    Helpful(3) Unhelpful(0)You have already voted this
  13. 2.15
    Price
    50
    Value
    10
    Quality
    60
    Performance
    50

    Not worth the money.

    + PROS:
    • Looks good, easy to change oil.
    - CONS:
    • It stopped running after one year and will not start. Louder then advertised. I should have never bought it. Junk
    Helpful(2) Unhelpful(0)You have already voted this
  14. 3.75
    Price
    90
    Value
    80
    Quality
    50
    Performance
    80

    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.

    + PROS:
    • Great price, easy to use.
    - CONS:
    • Loud. Handle vibrates while running which is also loud.
    Helpful(1) Unhelpful(0)You have already voted this

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