Best Generators for Fifth Wheels (2026)

Westinghouse built this machine around a feature that matters to a fifth wheel owner: remote start. With a key fob, you can fire the generator from inside the trailer on a cold morning, then shut it off from the couch after the air conditioner has cooled the cabin. The LED data center rotates through fuel level, output, remaining run time and voltage, so you can see in real time what the coach is drawing.

At 3,900 rated watts and a TT-30R outlet, it matches the typical one air conditioner rig. Power quality is under 3 percent total harmonic distortion, which is clean enough for a laptop, a TV and a CPAP. The telescoping handle and wheel kit make it easier to move around a campsite than an open-frame machine.

As a gasoline inverter of this size it is a mid-weight machine, and the remote start battery needs charging. Change the oil after the first 20 hours, since small inverter crankcases get hot. For long storage, use the monthly exercise and keep the fuel stabilized. Compared with the 4650 open frame it costs more but is noticeably quieter, and the extra 300 rated watts is the difference between a microwave running alongside the air conditioner or not. A fifth wheel owner who parks at state parks with generator quiet hours will feel that difference every evening, and at a state park with a generator curfew the quieter exhaust note is what keeps a neighbor from knocking.

An open-frame generator makes sense in a truck bed. It is cheaper per watt than an inverter, rolls on its own wheel kit and carries a four gallon tank with a fuel gauge that claims up to 14 hours of run time. The 3,600 running watts is also exactly the ceiling of a 30 amp circuit, so it covers the full circuit.

The cost is noise and refinement. It runs at a fixed engine speed, so it burns fuel at light load and is much louder than the 5000 inverter. It starts on a recoil pull, which is harder than the push-button or remote starts on the other units here. It offers both TT-30R and L5-30R outlets.

It arrives with oil, a funnel and a tool kit, so first starts are easy. For truck bed use, secure it with straps and a wheel chock, and keep it upright so oil does not flood the cylinder during transport. Stabilize the fuel before storage, and run the carburetor dry on a long winter break. A truck bed is a rough ride, so inspect the fuel cap seal and the recoil handle after long hauls, and never transport it with a full tank on a hot day since gasoline expands and can weep from the vent.

Genkins aims at the owner who does not want to wrestle a heavy frame. At 63 pounds it is easy to lift into a truck bed, while 3,800 rated watts from a 174cc engine beats the Westinghouse 5000 on sustained output by a small margin. The 1.9 gallon tank claims up to 8 hours.

It is a pure sine wave inverter, so electronics are protected, and it runs quiet for its class. The trade is service and parts: Genkins is a newer brand with a thinner dealer network than Westinghouse. The 8 hour runtime is also shorter than the 14 hours of the open-frame 4650.

It is a good value for a fifth wheel owner who runs one air conditioner and needs a quiet machine. Keep the vents clear, run it monthly and use fresh fuel. Check the warranty terms and keep a spare spark plug and air filter, since parts availability is the first thing to test on a newer brand. Next to the Westinghouse 5000 it adds about 300 rated watts and loses remote start, so decide which of those you value more, and remember that a 63 pound machine is the one you will actually carry to a quiet corner of the site rather than leave on the truck tailgate.

This is the machine for a fifth wheel with two air conditioners. It is a 322cc dual fuel generator with a cast iron sleeve, rated at 7,500 peak watts, and it offers a 120/240 volt 14-30R outlet for RVs or a home transfer switch plus a 120 volt 30 amp outlet. The CO Watch-Guard system adds visual alerts and an automatic shutdown.

It is an open-frame wheeled unit, so it is heavier and louder than the inverter models, and the listing gives only a peak figure, so the running watts are lower. That makes it harder to size, and you should assume a sustained output well below 7,500. Propane lowers the number further.

Expect a bed-mounted carrier or a heavy ramp. Fuel flexibility is the draw: propane for storage, gasoline for full power. Run the machine monthly, charge the starter if electric, and keep the CO alert free of dust, because a clogged sensor can give false alerts that end a run for no reason. It is a good fit for a toy hauler that carries toys and needs more power. Peak capacity is roughly double that of the Westinghouse 4650, which is what a second roof unit needs, but you pay for it in weight and noise, so plan a ramp and a location for it away from the sleeping area of the trailer.