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DuroMax DS4500DX

Ranked #15 of 22 in Best Dual-Fuel Portable Generators: Champion, Westinghouse, DuroMax, WEN & FIRMAN (2026). Here is every spec we scored, where it came from, and how it compares.

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#15

DuroMax DS4500DX

Best for: CARB-certified dual fuel with 25 h at quarter load

6.1/10

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)

Score breakdown

Running watts (gasoline) 25%
Starting watts 5%
Runtime at 50% load 15%
Runtime at 25% load 5%
Noise 10%
Transfer-switch ready 10%
CO shutoff 10%
Runs on propane 10%
Weight 5%
CARB compliant 5%
Running watts (gasoline)3500 W
Starting watts4500 W
Runtime at 50% load10 h
Runtime at 25% load25 h
Noise69 dBA
Transfer-switch readyYes
CO shutoffYes
Runs on propaneYes
Weight126 lb
CARB compliantYes
Starting (peak) watts, gasoline4,500 W
Running watts on propane3,325 W
Fuel tank4 gal
Outlets(1) L14-30R
CO shutoffCO Alert shutdown
PriceCheck price
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Specs source:

DuroMax DS4500DX head-to-head

Head-to-headDuroMax DS4500DX vs Champion 3650W Dual Fuel Generator (201280)

How it compares

Open the full comparison table

DuroMax DS10000EH
7.5/10
#1 · 8,000 W CARB-certified dual fuel
FIRMAN H08052
7.5/10
#2 · 8,000 W dual fuel with 12 h at half load
Champion 8500W Electric Start Dual Fuel Generator (201493)
7.3/10
#3 · 8,500 W dual fuel with CO Shield
Champion 9500W Electric Start Dual Fuel Generator (201508)
7.3/10
#4 · Most running watts here: 9,500 W with an L14-30R and 14-50R
Champion 8000W Electric Start Dual Fuel Generator (201568)
7.1/10
#5 · 8,000 W dual fuel with a 14-50R
FIRMAN T08073
7.1/10
#6 · Tri-fuel 8,000 W with L14-30R and 14-50R
Champion 7500W Electric Start Dual Fuel Generator (201281)
6.9/10
#7 · 7,500 W dual fuel with electric start
FIRMAN T04472
6.8/10
#8 · Tri-fuel 4,400 W with 13 h at half load
Champion 6250W Dual Fuel Generator (201463)
6.7/10
#9 · 6,250 W dual fuel with CO Shield
DuroMax XP10000X
6.6/10
#10 · 8,500 W gas with 22 h at quarter load
FIRMAN H07553
6.4/10
#11 · 7,500 W dual fuel with CO alert
WEN DF8000X
6.4/10
#12 · 6,500 W dual fuel with Watchdog CO shutdown
Champion 5500W Dual Fuel Generator (201505)
6.3/10
#13 · 5,500 W dual fuel, 11 h at half load
DuroMax XP4850EH
6.2/10
#14 · 3,850 W dual fuel with 23 h at quarter load
Westinghouse WGen5300DFv
5.8/10
#16 · CARB-compliant dual fuel, transfer-switch ready
Champion 6500W Dual Fuel Generator (201077)
5.8/10
#17 · 6,500 W dual fuel, 11 h at half load
DuroMax XP5500HX
5.7/10
#18 · 4,500 W dual fuel with CO alert and 19 h at quarter load
Champion 3650W Dual Fuel Generator (201280)
5.7/10
#19 · RV-ready 3,650 W dual fuel with 14 h at half load
WEN GN8000M
5.4/10
#20 · 6,500 W gas, transfer-switch ready
Westinghouse WGen7500s
4.2/10
#21 · 7,500 W gas with an L14-30R
Westinghouse WGen3600DFv
4.1/10
#22 · CARB-compliant RV-ready dual fuel