MXR3500S Quiet Inverter Generator 3500W Remote Start

3200W running / 3500W peak covers the essentials and more. A window AC unit (700–1200W running), a refrigerator (600W running, 1,200W start), several LED lights, a TV, and phone chargers can all run simultaneously. A microwave draws 800–1500W on its own, so you can run one — just watch your total load.

On the job site: a circular saw (1400W), a drill (500W), and a work light still leaves headroom. A small air compressor (1–1.5 hp) is doable — verify the starting surge on your specific compressor first.

It won't run central air conditioning (5000W+), a well pump, or an electric range. For those you'd need the MXR6000GT.

The MXR3500S runs on either gasoline or liquid propane — you switch between them with the fuel selector. On gas: 3500W peak, 3200W running, 11 hours at 25% load. On propane: 3100W peak, 2800W running, up to 24 hours at 25% load on a standard 20 lb tank.

Propane stores indefinitely — no degradation, no stabilizer needed. Gas goes stale in 30–90 days. For emergency backup where you can't predict when you'll need it, propane is the better storage choice.

You can't run both at once. Stop the engine, switch the fuel selector, restart. That's it.

A built-in sensor monitors carbon monoxide levels near the unit. If CO reaches a dangerous concentration, the engine shuts down automatically — no action required from you.

This is the leading cause of generator fatalities: running a unit too close to an enclosed space. Even a garage with the door open, a covered porch, or a cracked window can trap CO fast enough to be deadly before symptoms appear.

The CO shutdown is a backup safety net, not a replacement for proper placement. Always run at least 20 feet from any door, window, or vent. Never inside any enclosed structure.

Runtime is rated at a percentage of load. 25% load on a 3200W generator is 800 watts — a fridge, a few lights, and a phone charger. At that load on gas: 11 hours from the 1.6 gallon tank. At 50% load (1600W): 6.5 hours.

Propane runtime is significantly longer: up to 24 hours at 25% load, 13.5 hours at 50% load on a 20 lb tank.

Running heavy loads — AC, multiple appliances — means shorter runtimes closer to the 50% figures. When in doubt, size up rather than run at the edge of capacity.

On gasoline: 3,500W peak and 3,200W running. On propane: 3,100W peak and 2,800W running. The running wattage is what matters for sustained loads — peak wattage is the momentary surge capacity for starting motors.

Yes. It uses inverter technology to produce AC power, which means the engine speed adjusts to the load demand rather than running at full speed constantly. This delivers fuel efficiency, quieter operation, and clean power with less than 3% total harmonic distortion.

55 lbs. Enclosed suitcase-style with a built-in handle. One person can carry it to an RV hookup, load it in a truck bed, or move it around the yard without assistance.

21 inches long × 12 inches wide × 20 inches tall. Relevant for RV storage bays, truck beds, or any enclosed area where fit matters.

62 dB measured at 23 feet — about the level of a normal conversation. Honda EU3200i runs quieter at 54–58 dB. The tradeoff: the MXR3500S costs significantly less and adds dual fuel that Honda doesn't offer in this class.

11 hours at 25% load (800W) and 6.5 hours at 50% load (1,600W) on the 1.6 gallon tank. Real-world runtime depends on your actual load — running an AC unit and fridge simultaneously puts you closer to the 50% figures.

Up to 24 hours at 25% load and approximately 13.5 hours at 50% load on a standard 20 lb propane tank. Propane output is slightly lower (2,800W running vs 3,200W on gas), but the extended runtime makes it the better choice for sustained backup where refueling is inconvenient.

No. Stop the engine, change the fuel selector, then restart. Do not switch while the generator is running.

Connects to standard LP gas tanks. A 20 lb tank (standard grill size) provides roughly 24 hours at 25% load. A 1 lb disposable cylinder gives a few hours of light use.

Two 120V 20-amp household outlets (NEMA 5-20R), one 30-amp RV outlet (TT-30R), and two USB charging ports.

If your RV uses a 30-amp shore power connection (TT-30R), yes — plug directly in, no adapter needed. If your RV is a 50-amp system, you'll need a 50A to 30A adapter, and the generator will only supply 30 amps of that connection.

Yes. Total harmonic distortion is rated at 3% or less — within the safe operating range for laptops, TVs, CPAP machines, and other sensitive devices.

Yes. CPAP machines typically draw 30–200W depending on the model and whether a heated humidifier is active. The clean inverter power (≤3% THD) is safe for CPAP use.

Yes — push-button electric start plus recoil backup. The 12V battery for electric start is not included. The recoil is available if the battery is ever depleted.

A built-in carbon monoxide sensor monitors levels near the unit. If CO reaches a dangerous concentration, the engine shuts down automatically. Always run the generator at least 20 feet from any door, window, or vent — the CO shutdown is a backup, not a replacement for proper placement.

No. Never run any generator indoors, in a garage, basement, shed, or under a covered porch. Carbon monoxide is odorless and can reach deadly levels in minutes in any partially enclosed space.

Yes. Parallel cables are included. Two units in parallel gives up to 6,400W running on gas — enough for a larger RV on a 50-amp connection or a more robust home backup setup. Both generators must be the same model on the same fuel type.

A 13,500 BTU RV AC draws about 1,500W running with a starting surge around 2,800W. The MXR3500S handles that surge with its 3,500W peak. Running the AC plus a fridge and other small loads is feasible — monitor total load and don't start other large appliances simultaneously at AC startup.

SAE 10W-30 motor oil. Capacity is 0.12 gallons. Check and add oil before first use — generators ship without oil.

A5RTC. A spark plug socket wrench is included in the box.

If storing more than 30 days on gas, run the carburetor dry or use fuel stabilizer. On propane, storage is simpler — propane doesn't degrade. Store in a cool, dry location. A dust cover is included.

Yes. Ships free to the contiguous US. 1 business day handling, 1–5 business days transit.

30-day return window. Full refund, free return by mail. Call or email us and we'll take care of it.

2-year manufacturer's warranty through MXR. Covers defects in materials and workmanship under normal use. If you have a warranty issue, contact us directly — we'll work through it with you.

Yes. Call Josh at Durvy Supply: 314-833-8000. If you're not sure whether the MXR3500S is the right size for your RV, home backup, or job site, a five-minute call will sort it out.