The iGen4500 puts out 3,700 W continuously and up to 4,500 W for a few seconds when a motor starts. It runs up to 16 h at 25% load on a full 3.4 gal12.8 L tank. It weighs 104.7 lb47.5 kg. Noise is rated at 62 dBA at 25% load, distance not stated. It takes 20.3 fl oz0.60 L of engine oil, and the source recommends SAE 10W-30.
Specifications
Units: /| Power | |
|---|---|
| Running output | 3,700 W 1 |
| Starting output | 4,500 W 1 |
| Voltage | 120 V 1 |
| Inverter (clean power for electronics) | Yes 1 |
| Engine | |
| Engine | Westinghouse OHV 4-stroke, 7.3 HP 1 |
| Displacement | 224 cc 1 |
| Fuel | Gasoline 1 |
| Starting | Electric, remote key fob and recoil 1 |
| Fuel and run time | |
| Tank | 3.4 gal12.8 L 1 |
| Run time | 16 h 1at 25% load13 hours at 50% load. |
| Size and noise | |
| Weight | 104.7 lb47.5 kg 1Dry weight. Shipping weight is 112.5 lb. |
| Length × width × height | 24.5 × 17.5 × 20 in622 × 445 × 508 mm 1 |
| Noise | 62 dBA 1at 25% load, distance not stated65 dBA at 50% load. |
| Outlets | |
| Outlets | 1 × 120 V 30 A RV (TT-30R) 1 × 120 V 20 A duplex (5-20R) 2 × 5 V USB |
| Other | |
| Emissions certification | EPA and CARB compliant 1 |
| Warranty | 3 years or 1,000 hours residential; 6 months or 1,000 hours commercial 1 |
Oil, spark plug and service
What to have on the bench before an oil change or tune-up.
| Oil capacity | 20.3 fl oz0.60 L 1Westinghouse also lists it as 0.6 qt. |
| Oil type | SAE 10W-30 1 |
We're still missing some service figures for this model. Have the owner's manual? Send it over.
Parts
Search links for common parts. Check the part number against the label on your unit before you buy.
| Part | Find it |
|---|---|
| Air filter | Amazon · eBay |
| Spark plug | Amazon · eBay |
| Parallel cord | Amazon · eBay |
| Generator cover | Amazon · eBay |
We may earn a small commission if you buy through these links. It doesn't change what we list. More.
Model numbers
This page covers model number iGen4500. Brands often sell the same name under several numbers with small differences, so check the label on the frame.
Compare
Often compared: Champion 201318 4500-Watt RV Ready Inverter, Predator 3500 Super Quiet Inverter
Questions people ask
How much oil does the Westinghouse iGen4500 take?
20.3 fl oz0.60 L. Oil type: SAE 10W-30.
How long does the Westinghouse iGen4500 run on a tank?
16 h. That's at 25% load, according to the source. More load means less time.
How much does the Westinghouse iGen4500 weigh?
104.7 lb47.5 kg. Dry weight. Shipping weight is 112.5 lb.
How loud is the Westinghouse iGen4500?
62 dBA. Measured at 25% load, distance not stated.
What's the difference between 3,700 W and 4,500 W?
3,700 W is what it can supply continuously. 4,500 W is a short burst for the moment a motor (a fridge, a pump, an AC unit) starts up.
Sources
- Westinghouse iGen4500 spec sheet (2017, hosted by A&P Electric). Manufacturer, accessed November 11, 2026.
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