Wagan Corporation, Hayward CA

Customer service is unresponsive. I bought a square wave inverter. My induction cooktop and beard trimmer would not work with it. I emailed and asked to return it and order a pure sine inverter. They replied and said sure, order the sine inverter and return the square wave. I did. Returned the square wave when I picked up the pure sine inverter, in person, at their shop in Hayward. The return has not been processed. They have not responded to emails over several weeks and follow-ups on my end. The emails are in the same chain where they responded the first time approving the return. I paid extra money for a US company that I hope makes better products and has better service than other options for an inverter. Hopefully the product is good. They should put a list of loads that are not recommended for square wave inverters on the inverter product page. If it said not recommended for induction cooktops, I would not have bought the square wave to start with. The pure sine inverter has been working fine for a month with daily use.