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.
- Genmax GM2200i
- Powermate PM4500
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).
| Specification | Genmax GM2200i | Powermate PM4500 |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | Yes | No |
| Parallel capable | Yes | No |
| RV ready | No | No |
| Running watts | 1800 W | Winner: Winner: 3600 W |
| Starting watts | 2200 W | Winner: Winner: 4500 W |
| Noise (lower limit) | Winner: Winner: 58 dB | 0 dB |
| Weight | Winner: Winner: 41.9 lbs | 105 lbs |
| Run time @50% load | 6 h | Winner: Winner: 14 h |
| Run time @25% load | 8 h | 19 h |
| Fuel tank | 1 gal | 5 gal |
| Fuel gauge | No | Yes |
| Approx. dimensions (L × W × H) | 18.9 x 11.4 x 17.3 | 26.3 x 22.9 x 21.5 |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | 5 | Not available |
| GFCI outlets | No | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | <3% % | Not available |
| Engine | ||
| Engine | 79.7 cc Dinking OHV 4-stroke | Generac OHV 4-stroke 224 cc |
| Alternator | Not available | Not available |
| Starting system | Recoil | Recoil |
| Warranty | ||
| Warranty | 1 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 1800 W | 3600 W |
| Starting watts | 2200 W | 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 | 6 h | 14 h |
| Run time @25% load | 8 h | 19 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | false |
| Compliance | EPA, ANSI/PGMA G300-2023 | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Not available | true |
| UPC | 738349925141 | 696471080346 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 1800 | 3600 |
| Starting Watts (Gasoline) | 2200 | 4500 |
| Runtime @ 50% Load (Gasoline) | 6 | 14 |
| Runtime @ 25% Load (Gasoline) | 8 | 19 |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R) | 2x Duplex 120V 20A (5-20R) GFCI1x 120V 30A (L5-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | Dinking OHV 4-stroke | OHV |
| Engine Displacement | 79.7 | 224 |
| Engine Oil Type | 10W-30 | 10W-30 / SAE 30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 8 | 19 |
| Runtime @ 50% Load (Gasoline) | 6 | 14 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection, CO monitoring | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Included Accessories | Funnel and tool kit | Oil and wheel kit |
| Warranty & identification | ||
| Commercial Warranty | Not available | 3 |
| Part Number | Not available | P0081200 |
| Additional specs | ||
| Summary | The GENMAX GM2200i is a 2200-watt gasoline inverter generator featuring a 79.7cc engine, CO detection, and parallel capability, designed for quiet and efficient power supply. | The Powermate PM4500 is a 4500-watt portable generator featuring COsense® Technology for carbon monoxide protection, a Generac® 224CC OHV Engine, and a 19-hour run time at 25% load. |
- Most PowerfulPowermate PM45003600W running
- QuietestGenmax GM2200i58 dB
- Longest RuntimePowermate PM450014h at 50% load
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Genmax GM2200i
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