Westinghouse iGen4500 5000 Peak Watt Super Quiet Portable Inverter Generator, Remote Electric Start, RV Ready, Gas Powered, Parallel Capable Review (2026)

Who this generator fits

This generator suits RV owners who need real air conditioner starting power at a campsite without hookups, since 4500 peak and 3700 running watts is enough headroom to start most rooftop AC units and keep other appliances running at the same time. It fits owners of larger travel trailers or fifth wheels more than owners of small pop-up campers, where a lighter, lower-output inverter would be easier to carry and still cover basic needs. The parallel capability also suits owners who may want to add a second matching unit later for even bigger loads, rather than buying a single larger and heavier generator upfront. Boondockers focused purely on lights, fans and charging batteries with no air conditioner to start would likely be better served by a smaller, lighter inverter.

Specs and design explained

The iGen4500 uses a 224cc Westinghouse OHV engine to produce 3700 running watts and 4500 peak watts, weighs about 104.7 pounds without fuel, and measures roughly 24.5 by 17.5 by 20 inches. Its 3.4 gallon fuel tank supports up to about 18 hours of runtime at 25 percent load, and true inverter technology keeps total harmonic distortion at 3 percent or less, which matters for safely running sensitive electronics. Noise is rated as low as 52 dBA thanks to a double-insulated acoustic enclosure and low-tone mufflers, and remote electric start lets owners fire up the generator from up to roughly 100 feet away rather than pulling a cord in the cold.

Setup, fueling and care

Setting up the iGen4500 at a campsite means rolling it out on its never-flat wheels, extending the telescoping handle, filling the tank with regular gasoline, and starting it either with the remote, the electric start button or the recoil backup. Because it is gas only, owners cannot switch to the RV's onboard propane tank the way a dual-fuel model allows, so keeping a spare fuel container on hand for longer trips is worth planning for. Routine care follows standard small-engine maintenance: regular oil changes, air filter checks, and running the tank low before storage to avoid stale fuel in the carburetor, along with keeping the unit on level ground for proper oil circulation during use.

How it compares with dual fuel rivals

Against the Westinghouse iGen4000DFcv and the Champion 200988, both dual fuel units ranked ahead of it in the best RV generators guide, the iGen4500 gives up the flexibility of running on propane from the RV's own tank, relying on gasoline only. Its 4500 peak watt rating splits the difference between the smaller iGen2550DFc and the larger 12000 peak watt Westinghouse unit in the same lineup, giving it a middle ground of real AC-starting power without the bulk of a full whole-house-capable generator. The parallel port lets two iGen4500 units combine output, a feature the smaller Westinghouse models also share, which keeps upgrade paths open without needing to replace the generator entirely.

Verdict and who should pick something else

RVers who need dependable power to start a rooftop air conditioner and run other appliances at the same time, and who do not mind a gas-only unit at around 105 pounds, get strong value and performance from the iGen4500. Owners who want fuel flexibility between gas and propane should look at the dual fuel iGen4500DFcv or Champion 200988 ranked ahead of it in the guide instead, and anyone who only needs to power lights and small electronics should consider a smaller, lighter inverter generator. For serious RV power needs without stepping up to a whole-house-size unit, the iGen4500 earns its strong showing, matching our score of 8.6 out of 10.

Frequently asked questions