I bought this for hurricane ac back up. I have run it about 24 hours and it has worked fine. The reviews do mention that it the fan picks up condensate in the cabinet and makes a light ticking sound which it does at lower fan speeds. It isn’t annoying and doesn't seem  to effect the performance. It also states in the owners manual that this is normal and to not drill a hole In the bottom of unit to drain the water. The only reason I didn’t give five stars is because I haven’t used it a lot and can’t speak for the longevity.