I bought this a year ago, and before one year it started whining, and they replaced it with new one. It was still under 1 year warranty. I had also purchased a 2 year warranty when I bought it. So it's covered 3 years. Works great on our ceramic tile floors.
Love the machine - so much better on my porcelain floor tiles/grout - actually cleans/scrubs vs the ones that just rotate, only caveat is that I wish it would also vacuum at the same time saving me the need to do that first - my floors are very large - entire house is tile.
The rotating heads make mopping so easy. My only complaint is that the water tank is small as I had to refill it a few times. However, I reckon that if it had a larger tank, the mop would be heavier to handle. All in all, I really like this mop compared to other steam mops. Shark does a good job improving on their products.