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Generators under $400

All generators

4 generators under $400 from PowerSmart and Westinghouse. Prices run $320 to $399.

All filtersFilters (1)×
Watts: 3000 to 5000 W  ×Clear all
BrandPowerSmart2Bsmtek1Westinghouse1
TypeInverter3Portable1
WattsUnder 3000 W53000 to 5000 W4
Clear allShow 4 generators
Watts: 3000 to 5000 W  ×4 resultsSort byRecommendedSpec scorePrice: low to highPrice: high to low
WestinghouseSpec score 9.5

Portable, Dual Fuel, 3000 to 5000 W

+Dual fuel operation for gasoline and propane
+RV ready with a 30A outlet
+Built-in CO sensor for added safety
−Portable unit that is not an inverter design
$399.00
as of 11/04/2026 07:42 PST - Details
PowerSmartSpec score 9.5

Inverter, Dual Fuel, 3000 to 5000 W

+Dual fuel operation adds flexibility
+Inverter design for clean power output
+Includes a CO sensor for safety
$319.99-14%Was: $369.99
as of 11/04/2026 00:44 PST - Details
Bsmtek

Inverter, Gasoline, 3000 to 5000 W

+Inverter design produces clean power for sensitive electronics
+Gasoline powered with a 3000 to 5000 watt output range
+Portable open frame design for easy transport
$399.99
as of 11/04/2026 14:37 PST - Details
PowerSmart

Inverter, 3000 to 5000 W

+3000 to 5000 W: the most watts of the 9 here
$389.99
as of 11/04/2026 00:44 PST - Details

Compare specs

generatorTypeFuelWattsSpec scorePrice
PortableDual Fuel3000 to 5000 W9.5$399.00
as of 11/04/2026 07:42 PST - Details
InverterDual Fuel3000 to 5000 W9.5$319.99
as of 11/04/2026 00:44 PST - Details
InverterGasoline3000 to 5000 Wn/a$399.99
as of 11/04/2026 14:37 PST - Details
Inverter3000 to 5000 Wn/a$389.99
as of 11/04/2026 00:44 PST - Details

Before you buy

Other price ranges

Portable Power Stations75Generator Accessories77Grills727Grow Lights169Hot Tubs194Lawn Mowers388Planters388Pool Cleaners262Pool Heaters122Pool Pumps73Saunas1,505Outdoor Storage & Housing28

Popular filters

Inverter Generators40Generators over 9,000 W39Generators with Electric Start34Dual-Fuel Generators33Generators with a CO Sensor25Gasoline Generators25Portable Generators223000 to 5000 W Generators22

Generators by use

Small Inverter Generators for Camping9RV Ready Inverter Generators16Portable Generators with Electric Start18High Output Portable Generators16Dual Fuel Inverter Generators16

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Spec scores, pros and cons, and prices are explained in the How it works section of the About page.