Home Power Facts Portable generator
Westinghouse iGen5000
The Westinghouse iGen5000 is an inverter generator rated 3,900 W running and 5,000 W starting on gasoline. It can run 28 of the 29 household loads we track. The manufacturer rates it at 18 hours on a 3.4 gal tank at 25% load, about 4.5 gallons a day at that load.
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Specs
| Type | Inverter (clean power for electronics) |
|---|---|
| Fuel | gasoline[source]SUBSTITUTION: the iGen4500 has no current official page. Westinghouse's own site redirects westinghouseoutdoorpower.com/products/igen4500-inverter-generator to westinghouse.com/products/igen5000-inverter-generator, and also redirects the iGen4500DF, iGen4500DFc and iGen4500c URLs to the matching iGen5000 variants. So these are the iGen5000 figures (gasoline only). Variants on westinghouse.com: iGen5000DF (dual fuel), iGen5000c and iGen5000cv (CO sensor), iGen5000DFc, iGen5000DFcv, and iGen5000DFc EFI. |
| Running watts (gasoline) | 3,900 W[source]Spec table 'Gasoline Running Watts': 3900. The owner's manual (https://cdn.westinghouseoutdoorpower.com/owners_manuals/iGen5000_manual_web.pdf) agrees. |
| Starting watts (gasoline) | 5,000 W[source]Spec table 'Gasoline Peak Watts': 5000. |
| Fuel tank | 3.4 gal[source]Fuel Tank Capacity: 3.4 gal. (12.8 L). |
| Runtime on a full tank | 18 h[source]Gasoline Run Time @ 25%: 18 hrs. at 25% load |
| Noise | 52 dBA[source]Spec table 'Noise Level: 52 dBA'. The description says 'as low as 52 dBA'. Neither the page nor the owner's manual states the measuring distance or load. |
| 240 V outlet | No[source]AC Voltage is 120V only. Outlets: 1 duplex 120V 5-20R, 1 120V TT-30R (RV ready), 2 USB. Not transfer switch ready. Parallel capable. |
| CO shut-off sensor | No[source]Spec table 'Carbon Monoxide (CO) Sensor: No'. The iGen5000c, iGen5000cv and DFc variants add Westinghouse's CO sensor. |
| Weight | 104.7 lb[source]Dry Unit Weight: 104.7 lb. (47.5 kg). |
| List price | $1,099[source]$1,099.00 MSRP on westinghouse.com (Shopify .js price 109900), no compare-at or sale price, seen 2026-10-19. The Shopify product JSON reports available=false, but the page shows a 'Where to buy' link and no out-of-stock badge. |
Fuel cost: about $0.84 per kWh at the stated load (0.19 gal/kWh × $4.33/gal, the EIA US average). This applies at the stated load only.
What it can run
"Yes" means the running watts fit within 3,900 W and the startup surge within 5,000 W, and the load runs on 120 V. Unlike a battery, a generator runs as long as it has fuel, so there is no runtime per appliance; see fuel use above.