Which is better for running an RV air conditioner?

Both rate 3500W on gasoline and 3150W on propane, enough for most 13,500 BTU RV air conditioners with soft-start. The WEN's larger 212cc engine gives more surge headroom, and its TT-30R plug needs no adapter.

Is the WEN worth twice the price of the ERAYAK?

Only if electric start, the fuel display and the three-year warranty matter to you. Output is identical on paper, so the $432 gap as of November 3, 2026 buys convenience and coverage, not more watts.

Which one is quieter?

Both are rated 58 dBA, the WEN at quarter load at 22 ft and the ERAYAK at 7 m. The ERAYAK is listed at 60.5 dBA at half load, so expect them to be close in real use.

Can I parallel two of either unit?

The ERAYAK has a built-in parallel interface for linking two units. WEN does not list a parallel port on the DF451i, so plan on a single unit for that model.

Which starts more easily in cold weather?

The WEN's keyless electric start is easier than a recoil pull in cold or dark conditions. The ERAYAK 4500PDM is recoil only, though buyers report it often starts on the first pull.

How long will each run on a tank?

WEN lists up to 8.5 hours at half load on its 2.2-gallon tank, or 9 hours on a 20 lb propane tank. ERAYAK lists a 2.25-gallon tank but no half-load runtime figure.

WEN DF451i Super Quiet 4500-Watt Electric Start Dual Fuel RV-Ready Portable Inverter Generator with Fuel Shut-Off vs ERAYAK 4500PD Dual Fuel Inverter Generator

Buy the ERAYAK 4500PD if price matters most: it is $447.61 at eBay as of November 3, 2026, versus $879.99 at Walmart for the WEN. The WEN DF451i gives you keyless electric start, a 212cc engine, a digital load and fuel display, and a three-year limited warranty for roughly twice the money. The ERAYAK matches the WEN on rated watts (3500 on gasoline, 3150 on propane) and weighs 54 lb, but the base 4500PDM is recoil start only.

Today the ERAYAK 4500PD Dual Fuel Inverter Generator costs $320.99 less at its best price.

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