If your camper doesn’t come standard with a powered roof vent, I highly recommend purchasing it as an option or installing later as an add-on. Several options exist to fit inside the standard 14″ x 14″ hole already cut in your popup camper’s roof for the existing vent.
A roof fan really helps air the camper out, including cooling it down after having sat out in the baking sun all day or drying out humidity collection. The power consumption is relatively low compared to the benefit offered, with some models pulling only a fraction of an amp.
The Fan-Tastic Vent Fan is one of the most popular units and comes standard on many popup campers and other RVs. It has three speeds, only pushes air out, and should be closed during rain or covered with the Ultra Breeze Vent Cover.
Instead of installing both the Fan-Tastic Fan and Vent Cover, Maxxair makes a Deluxe fan with a built-in vent that keeps rainwater out by pointing the louvered openings down. In addition to the convenient performance during rain, this fan also comes with 10 different speeds that range in power draw from only 0.08 amps to 2.27 amps for the highest speed setting and also features a thermostat mode where the fan automatically turns on at a set temperature. The vent can be operated in either pull (sucking air out) or push (pulling air into the popup) mode. It can even work in ceiling fan mode by keeping the vent closed but running the fan.
I highly recommend the Maxxair Deluxe fan, which is a simple upgrade if you already have a powered vent on your popup. Simply remove the old vent, install the Maxxair Deluxe, recaulk, and hook up power.