
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
| Specification | DuroMax XP12000HX | Pulsar PG12000B |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Dual-Fuel | Dual-Fuel |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | Yes | No |
| 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 gauge | Yes | Yes |
| 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 outlets | Yes | No |
| Covered outlets | No | No |
| Automatic Voltage Regulation | Yes | Yes |
| 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 | ||
| Gasoline | Not available | Not 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 |
| Propane | Not available | Not 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 arrestor | Yes | Yes |
| 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 Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | No |
| 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 PowerfulDuroMax XP12000HX9500W running
- QuietestDuroMax XP12000HX74 dB
- Longest RuntimePulsar PG12000B12h at 50% load


