
Comparing two tri-fuel inverter generators with 8500 running watts. See how the Pulsar PGD105TiSCO and Genmax GM10500iETC differ on warranty, runtime, and noise.
The Pulsar PGD105TiSCO and Genmax GM10500iETC are remarkably similar on paper. Both are tri-fuel inverter generators producing 8500 running watts and 10,500 starting watts, and they weigh within a couple of pounds of each other (246.9 lbs vs 244.7 lbs). Both run on gasoline, propane, or natural gas, giving you flexible fueling options for emergencies or extended use. The real differences come down to a few key details that could tip the scales depending on your priorities.
The Pulsar edges ahead in noise output at 62 dB compared to the Genmax's 64 dB, a modest but noticeable difference, especially during overnight operation. More significantly, the Pulsar comes with a 3-year warranty, tripling the Genmax's 1-year coverage. That extra peace of mind is reflected in the Pulsar's higher overall score of 6.49 versus the Genmax's 5.62.
On the other hand, the Genmax reports 14 hours of runtime at 25% load, while the Pulsar lists 9 hours at 50% load. These figures aren't directly comparable since they measure at different load levels, but the Genmax's number suggests strong fuel efficiency at lighter loads. Buyers who plan to run their generator for long stretches at partial capacity may find that appealing. Those who value longer warranty protection and slightly quieter operation will likely lean toward the Pulsar.
Choose the Pulsar PGD105TiSCO if you want the security of a longer warranty and slightly quieter operation. A 3-year warranty is a significant advantage for a generator in this class, especially if you're buying it as a home backup unit that might sit unused for months between power outages. When it does kick on, the 62 dB noise level is a touch more neighbor-friendly than the Genmax, which matters during overnight runs or in closer-quarter neighborhoods. The Pulsar's 9-hour runtime at 50% load also gives you a useful real-world benchmark for moderate power demands, like running a refrigerator, sump pump, and a few lights simultaneously.
Choose the Genmax GM10500iETC if fuel efficiency at lighter loads is a top concern and you're comfortable with a shorter warranty period. The 14 hours at 25% load suggests the Genmax can stretch a tank of gas further when you're not drawing heavy power, which is ideal for overnight home backup scenarios where you only need to keep essentials running. At 244.7 lbs, it's marginally lighter than the Pulsar, though the 2-pound difference is negligible in practice.
Both generators share the same core strengths: tri-fuel flexibility, inverter-clean power for sensitive electronics, and enough wattage to handle serious home backup duties or job site tools. The tri-fuel capability is particularly valuable during natural disasters when gasoline may be scarce, since you can switch to propane or connect to a natural gas line. Either unit can power central air conditioning components, multiple appliances, and power tools without breaking a sweat. The choice really comes down to whether you prioritize warranty length and noise or runtime efficiency and potentially a lower price point.
If your priority is long-term reliability assurance, the Pulsar PGD105TiSCO's 3-year warranty makes it the safer investment. It also runs a bit quieter at 62 dB, which adds up over hours of continuous use. If you're more focused on stretching fuel during lighter-load scenarios and the 1-year warranty doesn't concern you, the Genmax GM10500iETC's 14-hour runtime at 25% load is a practical advantage for overnight or extended backup situations.
Both generators deliver the same power output, the same tri-fuel versatility, and inverter-quality electricity. Neither is a bad choice. The Pulsar carries a stronger overall score and better warranty coverage, making it the more well-rounded option for most buyers. But the Genmax remains a competitive alternative, particularly if its street price is lower or if extended light-load runtime matters most to you.
Last updated September 7, 2026


| Specification | Genmax GM10500iETC | Pulsar PGD105TiSCO |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Tri-Fuel | Tri-Fuel |
| Inverter | Yes | Yes |
| Parallel capable | Yes | Yes |
| RV ready | Yes | No |
| Running watts | Winner: Winner: 8500 W | Winner: Winner: 8500 W |
| Starting watts | Winner: Winner: 10500 W | Winner: Winner: 10500 W |
| Noise (lower limit) | 64 dB | Winner: Winner: 62 dB |
| Weight | Winner: Winner: 244.7 lbs | 246.9 lbs |
| Run time @50% load | Not available | Winner: Winner: 9 h |
| Run time @25% load | 14 h | Not available |
| Fuel tank | 6.9 gal | 6.9 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 30.9 x 22.6 x 29.3 | 31.4 x 22.8 x 29.4 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240 |
| Voltage (DC) | 12 | 5 |
| GFCI outlets | No | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | ≤3% % | 3 % |
| Engine | ||
| Engine | 458 cc OHV 4-stroke | 458 cc OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric, Remote | Recoil, Electric, Remote |
| Warranty | ||
| Warranty | 1 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 8500 W | 8500 W |
| Starting watts | 10500 W | 10500 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 | 14 h | Not available |
| Natural gas | Not available | Not available |
| Running watts | 6800 W | 6800 W |
| Starting watts | 8400 W | 8400 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 |
| Propane | Not available | Not available |
| Running watts | 8000 W | 8000 W |
| Starting watts | 9500 W | 9500 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 |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | CARB, EPA, ANSI/PGMA G300-2023 | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Floating | true |
| UPC | 742332650842 | 814726028121 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 8500 | 8500 |
| Running Watts (Propane) | 8000 | 8000 |
| Running Watts (Natural Gas) | 6800 | 6800 |
| Starting Watts (Gasoline) | 10500 | 10500 |
| Starting Watts (Propane) | 9500 | 9500 |
| Starting Watts (Natural Gas) | 8400 | 8400 |
| Runtime @ 50% Load (Gasoline) | Not available | 9 |
| Runtime @ 25% Load (Gasoline) | 14 | Not available |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R) | 2x Duplex 120V 20A (5-20R) GFCI; 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | 458 cc OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 458 | 458 |
| Engine Oil Type | SAE 10W/30 | 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 14 | Not available |
| Runtime @ 50% Load (Gasoline) | Not available | 9 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection, CO monitoring |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Starting Components | Recoil, Electric, Remote | Recoil, Electric, Remote |
| Included Accessories | Funnel, tool kit, key fob, battery charger, natural gas hose with NPT adapter, propane hose, RV adapter, cover, neutral bonding plug, and battery | Oil, tool kit, key fob, natural gas hose with NPT adapter, propane hose, and battery |
| Warranty & identification | ||
| Residential Warranty | 1 | Not available |
| Commercial Warranty | 1 | 3 |
| Additional specs | ||
| Summary | The Genmax GM10500iETC is an 8500-watt tri-fuel inverter generator that runs on gasoline, propane, or natural gas. This wattage handles mid-to-large loads like air conditioning units, power tools, and multiple household appliances simultaneously. The tri-fuel flexibility means users can switch fuels based on availability and cost, a significant advantage for both emergency backup and remote work sites. | The Pulsar PGD105TiSCO is a 10,500-watt peak inverter generator that operates on tri-fuel options including gasoline, propane, and natural gas. It features a 458cc OHV engine, multiple starting methods, and is suitable for residential, outdoor, and work applications. |