Head to head · 2026
Westinghouse iGen4500 vs Champion 100889 4500W Dual Fuel Inverter
Contender A
Westinghouse iGen4500
Best Overall4,500 peak watts, 52 dBA, remote start, RV-ready — the most complete midsize inverter.
~$949 typical price
Buy on AmazonContender B
Champion 100889 4500W Dual Fuel Inverter
Best ValueThe iGen4500 formula plus propane capability, typically at a lower price.
~$799 typical price
Buy on AmazonOur verdict
The two best-value RV-class inverters, split by fuel. The Westinghouse is quieter, more refined, and has the remote fob; the Champion matches its real-world output and adds propane capability for less money. Gasoline-only users should take the iGen's polish — anyone who wants shelf-stable propane storage should take the Champion.
Pick the Westinghouse if…
- ✓Quietest possible 4,500-class operation
- ✓Remote start + full data display appeal
- ✓You'll run gasoline exclusively
Pick the Champion if…
- ✓Propane's no-varnish storage fits your usage
- ✓Best price in the RV-AC-capable class
- ✓CO Shield + Champion's support network
Spec by spec
| Spec | Westinghouse iGen4500 | Champion 100889 4500W Dual Fuel Inverter |
|---|---|---|
| Our score | 9.1 / 10 | 8.7 / 10 |
| Running watts | 3,700 | 3,500 (gas) / 3,150 (propane) |
| Peak watts | 4,500 (current listing is the 5,000-peak refresh) | 4,500 (gas) / 4,050 (propane) |
| Fuel | Gasoline | Gasoline / propane (dual fuel) |
| Tank / runtime | 3.4 gal — up to 18 hr eco mode | 2.3 gal — ~14 hr eco @ 25% load |
| Noise | ~52 dBA @ 25% load | ~61 dBA |
| Outlets | TT-30R, 2× 5-20R, USB | TT-30R, 2× 5-20R, USB |
| Start | Remote fob, electric, recoil | Electric, recoil |
| Weight | 98 lb | 105 lb |
| Warranty | 3 years | 3 years |
Still deciding?
Read the full reviews for the complete story, or check both current prices — sale pricing swings this class of decision all the time.
~$949 typical price
Buy on Amazon~$799 typical price
Buy on Amazon