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.

  • DEWALT DXGNR8000
  • Firman T04073
  • Model DXGNR8000
    Model DXGNR8000

    DEWALT 8,000W Gas Generator

    8000W
    Running
    0 dB
    Noise
    View details
  • Model T04073
    Model T04073

    Firman 4,000W Tri-Fuel Generator

    4000W
    Running
    67 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
SpecificationDEWALT DXGNR8000Firman T04073
General
Product type
Generator
Generator
Fuel
Gasoline
Tri-Fuel
InverterNoNo
Parallel capableNoNo
RV readyNoNo
Running watts
Winner: Winner: 8000 W
4000 W
Starting watts
Winner: Winner: 10000 W
5000 W
Noise (lower limit)
0 dB
Winner: Winner: 67 dB
Weight
183 lbs
Winner: Winner: 123.4 lbs
Run time @50% load
9 h
Winner: Winner: 12 h
Run time @25% load
Not available
14 h
Fuel tank
7.5 gal
5 gal
Fuel gaugeNoYes
Approx. dimensions (L × W × H)
27.3 x 27.4 x 28.5
29.8 x 27.5 x 26.1
Electrical
Voltage (AC)
120/240
120/240
Voltage (DC)
Not available
Not available
GFCI outletsYesYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
Not available
11%-14% %
Engine
Engine
Dewalt OHV 4-stroke, 420 cc
223 cc OHV 4-stroke, cast iron sleeve
Alternator
Not available
Not available
Starting system
Recoil, Electric
Recoil, Electric
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
8000 W
4000 W
Starting watts
10000 W
5000 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
9 h
14 h
Run time @25% load
Not available
Not available
Natural gasNot availableNot available
Running watts
Not available
3200 W
Starting watts
Not available
4000 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
Not available
Not available
Run time @25% load
Not available
Not available
PropaneNot availableNot available
Running watts
Not available
3600 W
Starting watts
Not available
4500 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
Not available
9 h
Run time @25% load
Not available
Not available
Other
Data center
Not available
Not available
Indicators
false
true
Compliance
CARB, EPA
CARB, EPA, ANSI/PGMA G300-2023
Security
Not available
Not available
Spark arrestorYesYes
Neutral
true
true
UPC
696471074536
840876140734
Core / High-priority specs
Running Watts (Gasoline)
8000
4000
Running Watts (Propane)
Not available
3600
Running Watts (Natural Gas)
Not available
3200
Starting Watts (Gasoline)
10000
5000
Starting Watts (Propane)
Not available
4500
Starting Watts (Natural Gas)
Not available
4000
Runtime @ 50% Load (Gasoline)
9
14
Runtime @ 50% Load (Propane)
Not available
9
AC Outlet Types
2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R)
1x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
223 cc OHV 4-stroke
Engine Displacement
420
223
Cylinder Sleeve
Not available
cast iron
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
9
14
Runtime @ 50% Load (Propane)
Not available
9
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection, CO monitoring
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Starting Components
Not available
Recoil, Electric
Included Accessories
Oil, battery charger, battery, and wheel kit
Oil, funnel, tool kit, propane hose, RV adapter, cover, battery, and wheel kit
Warranty & identification
Commercial Warranty
3
3
Part Number
DXGNR8000E
Not available
Additional specs
Summary
The DEWALT DXGNR8000 is an 8,000-watt gasoline generator built for job sites and temporary power needs. Its dual-voltage output and heavy-duty construction handle both household circuits and professional equipment, making it suitable for contractors and homeowners managing extended outages or remote work.
The Firman T04073 is a 4,000-watt tri-fuel generator that runs on gasoline, propane, or natural gas. On gasoline, it delivers 5,000 starting watts and 4,000 running watts, enough to power a refrigerator, microwave, and multiple household circuits simultaneously. On propane, output drops to 3,600 running watts, and on natural gas it falls to 3,200 running watts. This fuel flexibility means users can switch between sources based on availability and cost, a significant advantage during extended outages or in remote locations where one fuel type may be scarce. The T04073 targets homeowners, RV owners, and job site operators who need reliable backup power without the commitment to a single fuel source. Its 5-gallon tank runs for 14 hours at 25% load on gasoline, translating to roughly one week of emergency backup if you run it a few hours per day. The unit includes a wheel kit, making it easier to position despite its 123.4-pound weight.
  • Most Powerful
    DEWALT DXGNR8000
    8000W running
  • Quietest
    Firman T04073
    67 dB
  • Longest Runtime
    Firman T04073
    12h at 50% load
Where to buy
Prices can change. We update these automatically.
DEWALT DXGNR8000
Store links
No links yet.
Firman T04073
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.