Reliable Power When You Need It Most

List what you'll run at the same time, then add up two numbers for each: its running watts (continuous draw) and its starting watts (the brief surge motors need to start). Your generator's rated power has to cover the running total, and its maximum power has to cover the biggest startup surge on top of that. Leave 20–25% headroom rather than sizing right to the limit.

Yes — with an inverter model. The S2500iS, S3200iS, S3600iS, and S4500iS produce clean, stable power with low harmonic distortion, which suits laptops, phones, TVs, CPAP machines, and anything with an electronic control board. The S4000iS is our open-frame model: it runs tools, lights, and motors well, but its power isn't as clean, so for sensitive electronics choose an inverter model.

No — never. A running generator produces carbon monoxide, a colorless, odorless gas that can cause nausea, dizziness, fainting, or death. That rules out every enclosed space: garages, basements, sheds, tents, and RV compartments included, even with a door open. Always run it outdoors, well away from windows, doors, and vents, with the exhaust pointed away from the building.

It depends on your load — the lighter the draw, the longer a tank lasts. At a quarter load, expect up to 17 hours from the S2500iS, up to 22 from the S3200iS, and up to 18 from the S3600iS, S4000iS, and S4500iS. Run closer to the rated output and the tank drains faster; at half load, figure roughly half those numbers.

A 3-year limited warranty on parts and labor from the date of purchase, or 270 days for commercial and industrial use. As long as the product was bought from us and is within the warranty period, we honor it. To make a claim, contact SIOKIUU support directly rather than returning the unit to the place of purchase.