I also love my Olympian Wave-6 Heater. Started out with a Mr. Buddy Heater and upgraded this spring to the Wave-6 and have used it on 4 camping trips so far with it working flawlessly in temperatures down to the low 30's overnight. I chose to carry a 5 gallon exterior propane tank and installed a 12 foot hose from the exterior into the interior via an existing hole in the floor of the 5th wheel trailer. I just had to remove the sealant at this existing hole, insert the hose through the hole and then re-seal it. the outside portion of the hose is wrapped at the tank connection end with a plastic bag to protect against the elements during travel and this end is also secured to the frame with a Velcro strap during travel. I keep at least 4 windows cracked open and both roof vents cracked open when operating the Wave-6. Inside temperature has varied from 60 to 70 degrees upon getting out of bed in the morning, and this is on the 3000 BTU low setting. This fall I may have to turn it up to the 4500 BTU setting when the temps get into the 20's overnight.