I posted before when I first got this giant (24d x 48w x 80h), I had all kinds of questions and got some great answers from everyone. The humidor was made by JC Pendergast out of Racine WI. The company closed in the late 90's. I searched and searched and finally found the owner of the company, he name is Jim Pendergast he still lives in Racine, WI. I have talked with him many times about the humidor, he told me everything I needed to know about this humidor. It still had the original 2 gallon humidifier and still worked perfectly, so I kept it. The unit holds over 5000 sticks (I only have roughly 1100 in it). Jim said, "the unit's airflow is engineered to mimic a 5 story HVAC system, with a main supply plenum, the vertical stack on the right, to provide humidified airflow, and a main return plenum, the vertical stack on the left, to return the air to the system to be reconditioned, or in this case, re-humidified. It produces a right to left airflow as viewed from the front, and passes through the system controller, the humidistat. The air is drawn into the humidifier and picks up humidity by passing through the wet wick filter, which stands in a water tray, and wicks the water from the water tray. Once the case has reached full saturation, you could unplug it, open the doors, fan them for a few minutes, close the doors and the case & contents will be back at 70% in a few minutes; the case interior wood and cigars don't take on humidity very quickly, and don't release it very quickly either. There is no need to pre-treat the Spanish Cedar interior by wiping, etc., and no other beads, chemicals, fans or anything is required to keep your cigars happy. Run the humidifier on its lowest speed." After him telling me this I was kind of worried that things would not go that smooth, low and behold it did. I have no fans, litter, beads or any other type of media and this unit will hold 70/70 all day long. When I first turned it on it ran for a day or so and used about a gallon of water since then it may come on once every other day for maybe 10 minutes or so. I have have it setup for a few weeks and have put 3 gallons of water in, right now the tank is about 3/4 full, so I have only used about 1 1/4 to 1 1/2 gallons of water. I can literally unlock the top cabinet doors, open both doors and stand there and enjoy the smell and sight for a minute or two then pick by stick, shut and lock the door and the humidifier will not kick on. Usually I have to keep the door open 5 minutes or more for it to kick on, but within a few minutes after shutting the doors the RH is back to 70%. If you should ever have the chance to get an JC Pendergast humidor GET IT. I traveled about 4 hours to get this one and paid $450.00, best investment I have ever made. Jim said they retailed from $3000 to $5000. If you own a JC Pendergast humidor and would love to know more about them please PM me and I'll give you Jim's email. He is great and will help you any way he can.