A Wave heater (infrared) heats objects not the air (like a conventional forced air heater) so technically, it won't heat the camper like a forced air heater will. It has to heat objects in the camper which, in turn radiate the heat. While more efficient far as propane consumption and no electricity used, I prefer the forced air heat myself in my pop up TC. Other issue with a Wave heater is it produces a lot of water vapor from burning the propane.
In a pop up, you will never feel 'warm' with a wave heater n o matter how long it runs.