I have had a Haier for several years. I wasted 2 or 3 kegs initially due to various problems. First off, the fittings that came with it were all screwy and I had multiple CO2 leaks, so I went through several 5lb bottles of CO2 before sealing off all the leaks. After liberal use of teflon tape on all of the threaded fittings, I finally got that taken care of.
The next problem I had was regulating the temperature. In the humid summer months, the coils would get so much ice on them it would freeze up and then the internal temp would shoot well over 50F. After a few google searches I saw a suggestion to put a computer chassis fan inside the kegerator. I had a few laying around, so I hooked up a 12V fan and used some stiff wire to hang it from the top of the coil and have it blow air straight down. This was so effective, the internal temps actually shot down to the mid teens overnight, and I froze a keg solid. After goofing around some more I could barely get the thing above freezing, so I tried slowing the fan down by using a 7V power supply, and this not only cut the noise, but suddenly I was easily able to maintain a constant temp in the desired range. This has been running for almost 2 years with no no ice build-up on the coils and mostly perfect pours. I just recently replaced all of the draught technologies fittings with 100% stainless micromatic parts, starting with the keg coupler, all new beer hose, and a new micromatic shank on the tower. Last summer, I replaced the crappy OEM faucet with a stainless perlick. I just connected a keg of Harp's and it tastes exactly how it should, so I'm pretty happy. Now I just gotta figure out how to knock down some of the extra foaming I'm getting compared to the old setup.
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