Skip to content
Skip to main content

Compare Generators Side-by-Side

Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.

  • DuroStar DS13000MX
  • Firman H07552
  • Model DS13000MX
    Model DS13000MX

    DuroStar 10,500W Dual-Fuel Generator

    10500W
    Running
    74 dB
    Noise
    View details
  • Model H07552
    Model H07552

    Firman 7,500W Dual-Fuel Generator

    7500W
    Running
    74 dB
    Noise
    View details
Quick charts
Each chart uses its own Y-axis scale (so numbers are comparable within a chart).
Running watts
W
Starting watts
W
Noise
dB
Runtime @50%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
Generator Specifications Comparison
SpecificationDuroStar DS13000MXFirman H07552
General
Product type
Generator
Generator
Fuel
Dual-Fuel
Dual-Fuel
InverterNoNo
Parallel capableNoNo
RV readyYesYes
Running watts
Winner: Winner: 10500 W
7500 W
Starting watts
Winner: Winner: 13000 W
9400 W
Noise (lower limit)
Winner: Winner: 74 dB
Winner: Winner: 74 dB
Weight
Winner: Winner: 209 lbs
212 lbs
Run time @50% load
8.5 h
Winner: Winner: 12 h
Run time @25% load
17 h
12 h
Fuel tank
8.3 gal
8 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
29.8 x 27.5 x 25.8
30.2 x 27.5 x 26.3
Electrical
Voltage (AC)
120/240
120/240V 60 Hz
Voltage (DC)
Not available
Not available
GFCI outletsYesYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
Not available
25 %
Engine
Engine
500 cc OHV 4-stroke, cast iron sleeve
439 cc Firman Max-Pro Series OHV 4-stroke, cast iron sleeve
Alternator
Not available
Not available
Starting system
Recoil, Electric, Remote
Recoil, Electric
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
10500 W
7500 W
Starting watts
13000 W
9400 W
Running amps (120V)
Not available
Not available
Running amps (240V)
Not available
Not available
Peak amps (120V)
Not available
Not available
Peak amps (240V)
Not available
Not available
Run time @50% load
8.5 h
12 h
Run time @25% load
17 h
Not available
PropaneNot availableNot available
Running watts
9975 W
6750 W
Starting watts
12350 W
8450 W
Running amps (120V)
Not available
Not available
Running amps (240V)
Not available
Not available
Peak amps (120V)
Not available
Not available
Peak amps (240V)
Not available
Not available
Run time @50% load
3.3 h
5 h
Run time @25% load
6.5 h
Not available
Other
Data center
Not available
Not available
Indicators
true
false
Compliance
EPA, ANSI/PGMA G300-2023
CARB, EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
true
true
UPC
811640016746
840876175521
Core / High-priority specs
Running Watts (Gasoline)
10500
7500
Running Watts (Propane)
9975
6750
Starting Watts (Gasoline)
13000
9400
Starting Watts (Propane)
12350
8450
Runtime @ 50% Load (Gasoline)
8.5
12
Runtime @ 50% Load (Propane)
3.3
5
Runtime @ 25% Load (Gasoline)
17
Not available
Runtime @ 25% Load (Propane)
6.5
Not available
AC Outlet Types
2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R)
1x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke, cast iron sleeve
OHV 4-stroke, cast iron sleeve
Engine Displacement
500
439
Cylinder Sleeve
Cast iron sleeve
cast iron sleeve
Alternator Winding Material
Copper windings
Not available
Engine Oil Type
10W-30
10W-30
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
17
Not available
Runtime @ 50% Load (Gasoline)
8.5
12
Runtime @ 50% Load (Propane)
3.3
5
Safety & compliance
Overload Protection System
Low oil and overload protection, CO monitoring
Not available
Low Oil ProtectionNoYes
Carbon Monoxide MonitoringYesNo
Included equipment
Mobility Components
Not available
Yes
Starting Components
Recoil, Electric, Remote
Not available
Included Accessories
Funnel, tool kit, key fob, battery charger, propane hose, battery, and wheel kit
Not available
Warranty & identification
Commercial Warranty
3
Not available
Additional specs
Summary
The DuroStar DS13000MX is a dual-fuel generator with a rated wattage of 10500 watts and a peak wattage of 13000 watts. It features a 500 cc OHV 4-stroke engine and is designed for versatile power needs.
The Firman H07552 is a 7500-watt dual-fuel generator built for job sites, home backup, and extended outdoor use. On gasoline, it delivers 9400 starting watts and 7500 running watts. Switch to propane and output drops to 8450 starting watts and 6750 running watts, a trade-off that extends fuel flexibility but reduces peak capacity. The 439cc cast-iron-sleeve engine runs on either fuel, giving users the ability to source power based on availability and cost. With an 8-gallon tank, this generator runs 12 hours at 25% load on gasoline or 5 hours on propane, meaning refueling intervals depend heavily on fuel choice and load demand. This wattage class powers most household circuits simultaneously. A 7500-watt generator can run a central air conditioning unit (3500 watts), a water heater (4000 watts), and lighting circuits without overload. For contractors, it handles multiple power tools, compressors, and site lighting. The dual-fuel option appeals to users who want propane backup when gasoline becomes scarce or expensive, though the runtime penalty on propane means job-site users will refuel more frequently.
  • Most Powerful
    DuroStar DS13000MX
    10500W running
  • Quietest
    DuroStar DS13000MX
    74 dB
  • Longest Runtime
    Firman H07552
    12h at 50% load
Where to buy
Prices can change. We update these automatically.
DuroStar DS13000MX
Store links
No links yet.
Firman H07552
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.