RV air conditioners attach to the roof of your vehicle, pumping cold air into the cabin via a dedicated 14 x 14-inch A/C port ...

Global power and technology leader Cummins Inc. has been showcasing its new concept hybrid power system to help recreational vehicles (RVs) reduce emissions and noise.

Having AC and a heater in your RV is one thing, but maintaining the temperature is another. The roof vent may be one of the main problems - this hack fixes it.