Fans are critical in a camper van to keep air circulating whether with the heat on in the winter, AC on in the summer, or even when using the MaxxAir ceiling fan. We purchased 2 smaller USB fans for each bed and a larger rechargeable USB fan for the galley. The bed fans clip on to my my Custom PVC Fan Holders Add-on while the galley fan clips on nicely to the RAM Track basket in the galley.