Honestly haven't been impressed with our Maxxair. Maybe it's our layout that we don't get that circulation you'd expect. I'm not sure. But I bought a little USBC rechargable "camping fan" and it's been way better than our maxxair. I hang it from the ceiling behind the seats and it pulls the cool air from the front vents or open windows to the back of the van way better than our Maxxair ever has. It's important to us because our 14 year old dog prefers to be in the back which stayed much hotter than we liked before we got the new fan. It was $35 but it's one of those things that 100 sellers have on their pages on amazon and it's just a matter of finding the best price that day. It's also got a little LED light that's been nice for various random uses.