So far so good! I've had this 2000 watts inverter installed on my off-grid solar system in Mexico for the last 3 weeks and it is working so much better than the last one I had which I paid big money for. This inverter cost a third the price of the fancy ones that some of the people recommend. I researched it and spoke to many people who have used this same inverter for up to 7 years. I hope I am so lucky. I will keep you updated.