DuroMax DS4500DX vs Champion 3650W Dual Fuel Generator (201280)
Two of the dual-fuel & open-frame portable generators in our best dual-fuel portable generators: champion, westinghouse, duromax, wen & firman comparison, lined up spec by spec. Every figure comes from the manufacturer pages linked below, and the scores use the same published formula as the full ranking.
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Best for: CARB-certified dual fuel with 25 h at quarter load
Check price at AmazonChampion 3650W Dual Fuel Generator (201280)
Best for: RV-ready 3,650 W dual fuel with 14 h at half load
Check price at AmazonSpec-by-spec comparison
Green marks the better published figure. "Not listed" means the manufacturer doesn't publish it.
| Spec | DuroMax DS4500DX | Champion 3650W Dual Fuel Generator (201280) | Weight |
|---|---|---|---|
| Running watts (gasoline)Continuous (rated) output on gasoline as the maker lists it. | 3500 W | 3650 W | 25% |
| Starting wattsPeak (surge) output on gasoline for starting motors. | 4500 W | 4550 W | 5% |
| Runtime at 50% loadHours on a full gasoline tank at half load, as the maker states. | 10 h | 14 h | 15% |
| Runtime at 25% loadHours on a full gasoline tank at quarter load, as the maker states. | 25 h | Not listed | 5% |
| NoiseThe maker's noise figure in decibels. Load and distance differ by maker; the basis is in each product's notes where stated. | 69 dBA | 68 dBA | 10% |
| Transfer-switch readyYes when the generator has a 120/240V L14-30R or 14-50R outlet, or the maker calls it transfer-switch ready, so an electrician can connect it to your home through a transfer switch or interlock. | Yes | No | 10% |
| CO shutoffYes when the maker lists automatic carbon monoxide shutoff. | Yes | Yes | 10% |
| Runs on propaneYes for dual- or tri-fuel models. | Yes | Yes | 10% |
| WeightThe maker's listed (dry) weight. | 126 lb | 110 lb | 5% |
| CARB compliantYes when the maker lists CARB compliance. Not listed counts as no. | Yes | Not listed | 5% |
| Starting (peak) watts, gasoline | 4,500 W | 4,550 W | info |
| Running watts on propane | 3,325 W | 3,825 W | info |
| Fuel tank | 4 gal | 4.7 gal | info |
| Outlets | (1) L14-30R | 120V 30A (TT-30R) RV Outlet; 120V 30A Locking Outlet (L5-30R); 120V 20A Household Duplex Outlet | info |
| CO shutoff | CO Alert shutdown | CO Shield | info |
| CARB | Not listed | Not published by the maker | info |
| GenPick score | 6.1/10 | 5.7/10 | 100% |
Where each one comes out ahead
DuroMax DS4500DX
Better published figure on: Transfer-switch ready.
What we like
- Top runtime at 25% load in this comparison (25 h)
Watch out for
- Lowest running watts (gasoline) in this comparison (3500 W)
- Lowest starting watts in this comparison (4500 W)
Champion 3650W Dual Fuel Generator (201280)
Better published figure on: Running watts (gasoline), Starting watts, Runtime at 50% load, Noise, Weight.
What we like
- Top runtime at 50% load in this comparison (14 h)
Watch out for
- Runtime at 25% load not published by Champion
Verdict
DuroMax lists CARB certification and 25 h at quarter load; Champion lists 3,650 vs 3,500 W, 14 h at half load and a TT-30R RV outlet.
- DuroMax DS4500DX: DuroMax: DS4500DX
- Champion 3650W Dual Fuel Generator (201280): Champion: 3650W Dual Fuel Generator