There is pretty much no difference between the Westinghouse iGen4500 and the Cummins Onan P4500i. The Cummins Onan P4500i is just a rebranded Westinghouse iGen4500.
Westinghouse iGen4500 | Cummins Onan P4500i |
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Good observation. Yes, they are made by the same manufacturer. There are also other brands that look the same (Champion, Pulsar, and others). I read that Westinghouse has an issue with rust in the gas tanks but Onan recalled and repaired all of their generators. I also read Westinghouse has an issue with the electric choke and the customer service is terrible whereas Onan has repair centers.