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DuroMax XP12000HX vs Pulsar PG12000B

DuroMax XP12000HX vs Pulsar PG12000B

DuroMax XP12000HX vs Pulsar PG12000B: same 9500W/12000W output, but DuroMax offers 5-year warranty; Pulsar is lighter at 205 lb.

  • DuroMax XP12000HX
  • Pulsar PG12000B

Comparison Overview

The biggest real-world difference is ownership confidence and portability: the DuroMax XP12000HX backs its 9500 running watts with a 5-year warranty, while the Pulsar PG12000B matches the same 12000 starting watts but comes with a 2-year warranty and a lighter 205 lb build.

On power delivery, these are truly apples-to-apples. Both are non-inverter, dual-fuel (gasoline/propane) open-frame generators rated at 74 dB, so they’re better suited to home backup or job-site use than quiet camping. Either can start larger loads (like well pumps or central AC components) thanks to the 12000 starting watts, but you’ll still want to manage what runs at the same time to stay within 9500 running watts.

Runtime is where the specs diverge: the DuroMax lists 19 hours at 25% load and 9 hours at 50%, while the Pulsar lists 12 hours at 50% (no 25% figure provided). In practice, DuroMax leans toward longer, steadier backup sessions, while Pulsar leans toward easier moving and simpler ownership cost.

Pick DuroMax if warranty length and long-run backup matter most; pick Pulsar if you value a lighter unit with the same headline power.

Key takeaways

  • Both deliver 9500 running watts and 12000 starting watts for heavy loads.
  • DuroMax XP12000HX includes a 5-year warranty; Pulsar PG12000B includes 2 years.
  • Pulsar PG12000B weighs 205 lb, lighter than DuroMax XP12000HX at 230 lb.
  • Both are dual-fuel gasoline/propane and non-inverter open-frame designs.
  • Noise is similar: both rated 74 dB, better for backup than quiet camping.
  • DuroMax lists 19 hours at 25% load; Pulsar lists 12 hours at 50%.

Best use cases

Choose the DuroMax XP12000HX if you’re buying primarily for home backup and want a generator you can lean on for years. The 5-year warranty is a meaningful advantage if this will sit ready for storms, outages, or seasonal use, where long-term reliability and support matter. Its published runtime of 19 hours at 25% load is also a good fit for overnight operation when you’re running essentials like a refrigerator, lights, internet gear, and intermittent furnace blower. The tradeoff is heft: at 230 lb, it’s more of a “roll it into place and leave it” generator, and at 74 dB it’s not something you’ll want close to bedrooms or neighbors.

Choose the Pulsar PG12000B if you want the same 9500 running watts / 12000 starting watts in a package that’s easier to maneuver. At 205 lb, it’s still heavy, but noticeably more manageable when you’re loading it into a truck, repositioning it around a job site, or storing it between uses. Pulsar also lists 12 hours at 50% load, which can be a practical “workday” runtime for tools, compressors, or backup power during daytime outages. The main compromise is the 2-year warranty, and the lack of a published 25% runtime figure makes it a bit harder to estimate long, low-load overnight use.

For RVs and camping, neither is ideal: both are non-inverter and rated 74 dB, so they’re louder and less “electronics-friendly” than inverter models, even though they can run many devices just fine with sensible power management.

Verdict & recommendation

If your priority is long-term peace of mind for home backup, the DuroMax XP12000HX is easier to justify thanks to its 5-year warranty and strong published low-load runtime of 19 hours at 25%. If your priority is getting the same big power in a slightly more manageable package, the Pulsar PG12000B delivers identical 9500 running watts and 12000 starting watts at a lighter 205 lb.

Both are dual-fuel, open-frame, non-inverter generators rated at 74 dB, so expect similar noise and a similar “best use” profile: outages, job sites, and high-demand household loads rather than quiet recreation. Decide based on whether you value longer warranty/overnight planning (DuroMax) or easier handling with the same output (Pulsar).

Last updated February 8, 2026

  • Model XP12000HX
    Model XP12000HX

    DuroMax 9,500W Dual-Fuel Generator

    9500W
    Running
    74 dB
    Noise
    View details
  • Model PG12000B
    Model PG12000B

    Pulsar 9,500W Dual-Fuel Generator

    9500W
    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
SpecificationDuroMax XP12000HXPulsar PG12000B
General
Product type
Generator
Generator
Fuel
Dual-Fuel
Dual-Fuel
InverterNoNo
Parallel capableNoNo
RV readyYesNo
Running watts
Winner: Winner: 9500 W
Winner: Winner: 9500 W
Starting watts
Winner: Winner: 12000 W
Winner: Winner: 12000 W
Noise (lower limit)
Winner: Winner: 74 dB
Winner: Winner: 74 dB
Weight
230 lbs
Winner: Winner: 205 lbs
Run time @50% load
9 h
Winner: Winner: 12 h
Run time @25% load
19 h
Not available
Fuel tank
8.3 gal
8 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
29 x 30 x 26
28.5 x 21 x 22
Electrical
Voltage (AC)
120/240
120/240
Voltage (DC)
Not available
12
GFCI outletsYesNo
Covered outletsNoNo
Automatic Voltage RegulationYesYes
THD
Not available
Not available
Engine
Engine
457 cc OHV 4-stroke, cast iron sleeve
457 cc OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil, Electric
Recoil, Electric
Warranty
Warranty
5 years
2 years
Power by fuel
GasolineNot availableNot available
Running watts
9500 W
9500 W
Starting watts
12000 W
12000 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
12 h
Run time @25% load
19 h
Not available
PropaneNot availableNot available
Running watts
9025 W
8550 W
Starting watts
11400 W
10800 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
3.5 h
5 h
Run time @25% load
7 h
Not available
Other
Data center
Not available
Not available
Indicators
true
false
Compliance
CARB, EPA
CARB
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Not available
Not available
UPC
811640016227
814726025021
Core / High-priority specs
Running Watts (Gasoline)
9500
9500
Running Watts (Propane)
9025
8550
Starting Watts (Gasoline)
12000
12000
Starting Watts (Propane)
11400
10800
Runtime @ 50% Load (Gasoline)
9
12
Runtime @ 50% Load (Propane)
3.5
5
Runtime @ 25% Load (Gasoline)
19
Not available
Runtime @ 25% Load (Propane)
7
Not available
AC Outlet Types
2x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R)
2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
OHV 4-stroke
Engine Displacement
457
457
Cylinder Sleeve
Cast iron sleeve
Not available
Alternator Winding Material
Copper windings
Not available
Engine Oil Type
Not available
10W-30
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
19
Not available
Runtime @ 50% Load (Gasoline)
9
12
Runtime @ 50% Load (Propane)
3.5
5
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesNo
Included equipment
Starting Components
Recoil, Electric
Not available
Included Accessories
Funnel, tool kit, propane hose, battery, and wheel kit
Funnel, tool kit, propane hose, battery, and wheel kit
Warranty & identification
Residential Warranty
5
2
Commercial Warranty
5
2
Additional specs
Summary
The DuroMax XP12000HX is a 9,500-watt dual-fuel generator built for job sites, home backup, and RV use. Its 12,000-watt peak capacity handles the startup surge of air conditioners, compressors, and welders, while the 9,500-watt running output sustains multiple heavy tools or household circuits simultaneously. Gasoline delivers 19 hours of runtime at quarter load, making this unit suitable for extended outages or multi-day events without constant refueling. The dual-fuel design means users can switch between gasoline and propane depending on fuel availability and storage constraints. On propane at 25% load, runtime drops to 7 hours, trading endurance for cleaner emissions and longer shelf life. The 457 cc cast iron engine is built for durability on job sites where generators take abuse. This is a stationary workhorse, not a portable grab-and-go unit.
The Pulsar PG12000B is a 12,000-watt dual-fuel portable generator designed for reliable and robust power, featuring a 457cc OHV engine, electric push start, and a run time of up to 12 hours at 50% load.
  • Most Powerful
    DuroMax XP12000HX
    9500W running
  • Quietest
    DuroMax XP12000HX
    74 dB
  • Longest Runtime
    Pulsar PG12000B
    12h at 50% load
Where to buy
Prices can change. We update these automatically.
DuroMax XP12000HX
Store links
No links yet.
Pulsar PG12000B
Store links
No links yet.
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