After all the time, effort, blood, sweat, and tears TECs are just not worth it. As the OP will no doubt eventually see. I tore my TEC system down last year after about 10 months of operation. These cool it systems never seem to work out for some reason (maybe the cheap powered TECs, overpriced, condensation, work/performance ratio). There are quite of few of these systems in the TEC section that have only marginal performance for all the work involved. Hopefully this build will prove to be worth while.