We have the Wave 3 catalytic heater in our 16'
UHaul VT. It heats up very fast and gets the trailer warm in a hurry. However, because I installed in in the old furnace location, it seems too close to the bed linen for my comfort. Therefore, we turn it on in really cold weather, making sure the blankets are pulled back. After about 10-15 minutes, we shut it off to avoid any combustible items coming close. When we have shore power, we use a ceramic heater in place of the
propane heater. If you can mount the Wave 3 on the front table or a place away from combustibles, you should be fine. Keep ventilation spots open, too. We leave our bathroom ceiling vent open and have two floor vents I installed when the Wave 3 went in. Works well! (We have been in temps down to around 20 F. in South Dakota in March.)