I bought two new bunk light/fan combos when we got our NTU pup in 2012 They've become a vital part of our camping: we often camp without AC and shore power and they keep air moving. And even if we do bring our portable AC along, they are needed to circulate the cool air. So they get a lot of use. Our last trip not one but BOTH died on us. The first started getting noisy, then when we came in from outdoors it had completely stopped. I took it apart and it's the motor itself... probably a bad bearing. And the motor is not designed to be disassembled. A couple days later I was actually sitting in the pup and I heard the fan get slower, and slower, and slower... I actually turned on our voltage readout to make sure we weren't losing 12V power. But after a few seconds the fan fizzled out to a dead stop. Same symptoms as the second one. Not sure what brand these were, we got them through eTrailer. Seems like a relatively short lifespan for a product... we camp several times a year but usually only weekends. But... we find them vital so I've already ordered another pair. Incidentally etrailer's price has nearly doubled since 2012. I found another source similar to the old price.