I built a 4 tap keezer last month, and so far it's been working really great. I have 2 kegs on the hump, 2 kegs on the lower level, and my 5 lbs CO2 tank on the lower level as well. I routinely keep the thermostat at 38-40 degree in a small cup of water at the bottom level of the keezer. One issue I'm having is condensation, specifically around the CO2 tank - even with a dehumidifier on the floor, water will pool under the CO2 tank, and it's always wet to the touch. This condensation was amplified by a small fan I installed to keep the cold air circulated throughout the keezer - I turned it off, and there wasn't as much condensation, but the CO2 tank is still wet to the touch and tends to pool. Any idea why this would be happening? Should I move the CO2 tank to the hump, where the temperature will be a little warmer? I'd love to solve this problem.
Sounds like you may have a leaky seal around the lid. Or perhaps you simply open it too often. Do the dollar bill test all around the lid. Do you use an external temp controller? Of so, how does the bulb enter the keezer? The condensation was so bad in my keezer that I would have to clean out slimy gunk and mold from the bottom once a month or so. Something needed to be done. I used a dense foam weatherstripping on the lid. My lines exit through the collar. I applied silicone caulk to each line so air can't easily get through. I adjusted the freezer's thermostat, so I wouldn't need the external temp controller. I filled that hole with silicone caulk. I also have a container of Damp-Rid on the hump. I empty about a pint of water a month. I rarely open the lid. Moisture problems are a fact of live with non frost-free chillers, but mine is now manageable. No more slimy mold. I clean the inside thoroughly with a bleach solution every few months. BTW, I keep my CO2 tank in an adjacent closet. I have other things that need to be kept cold.
Put the tank outside, and make room for another keg! I can send a pic of what I did if you're interested.
