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Updated · 18 Sep 2026 · Sheet checked · 18 Sep 2026
It depends
Two 4500-class portable inverters. Both are 120 V only — neither is a 240 V well plant. Pick by continuous watts, fuel, and whether you carry ~52 lb or roll ~100 lb.
| Champion 201531 | Westinghouse iGen4500c | |
|---|---|---|
| Running | 3,250 W gas / 2,925 W LPG | 3,700 W gas |
| Surge / start | 4,500 W (either fuel) | 4,500 W peak |
| Fuel | Dual-fuel (gas or propane) | Gasoline only (not DF/DFc) |
| Engine | 149 cc | 224 cc |
| Weight | 51.8 lb | ~100–105 lb class with wheels |
| Start | Recoil only | Electric + remote + recoil |
| Noise | 64 dBA @ 23 ft (Champion sheet) | Retail ~52 dBA class — not cross-comparable; OM does not pin a verified distance figure here |
| CO | CO Shield | CO sensor / shutdown |
| Tank / runtime (mfr @ 25%) | 1.54 gal; up to 10 h gas; up to 25 h on 20 lb propane | 3.4 gal; up to 18 h @ 25% load |
| Outlets | 5-20R duplex, TT-30R, 12V 8A, parallel | 2× 5-20R, TT-30R, USB; parallel cord extra |
| THD | <3% claimed | ≤ 3% |
| Parallel | ParaLINK kit separate | Capable; cord extra |
| Voltage | 120 V only (27.1 A gas / 24.4 A LPG) | 120 V only |
Side-by-side of two live Outage Stack SKUs: Champion 201531 and Westinghouse iGen4500c. Exact models only — not Champion 201532, not iGen4500 DF/DFc, not iGen5000.
Champion 201531: Carry-class dual-fuel inverter. Continuous: 3,250 W gas / 2,925 W propane; 4,500 W starting on either fuel. Recoil, CO Shield, 1.54 gal tank, ParaLINK separate.
Westinghouse iGen4500c: Wheeled gasoline-only inverter. OM: 3,700 W running / 4,500 W peak at 120 V. Electric + remote + recoil, CO shutdown, 3.4 gal tank, parallel cord extra. Not the DF/DFc siblings.
Both — will run (with headroom): Fridge + lights + phones. Modest microwave or a measured small window AC — one hard load at a time. TT-30R loads under each continuous rating (Champion gas 3,250 W; Westinghouse 3,700 W).
Champion edge: Propane when gasoline is scarce; ~52 lb carry without a cart; light-load hold on a 20 lb bottle (mfr: up to 25 h @ 25%).
Westinghouse edge: ~450 W more continuous on gas; e-start / remote; larger onboard tank (mfr: up to 18 h @ 25%).
Skip or measure first (both): Unmeasured well or sump start. Any 240 V interlock / transfer story. Treating 4,500 as continuous. Parallel kits as included. Quiet-camp duty without reading each maker's noise test conditions.
Skip both if… the load is an unmeasured 240 V well, or you only need EU2200i-class fridge duty (see Champion 201531 vs Honda EU2200i).
It depends. Take the Champion 201531 when dual-fuel and carry weight matter more than another ~450 W of gasoline continuous, and you accept recoil. Take the Westinghouse iGen4500c when you want ~3,700 W continuous, e-start / remote, and a larger gas tank on wheels — and you do not need propane on this exact SKU. Size either to continuous watts, not the 4,500 marketing band. Neither replaces a 240 V standby or a measured well solution.