[futuresoptions]

Hey Guys,

Hope everyone is having a great holiday season. As many of you know, I am waiting to hear from some positions that I have applied for and in the mean time I have hired on locally as an HVAC instructor at one of the local technical colleges. I have a question in reference to a water cooler that a student has brought in to work on . This unit is one of the cheap stand alone units that run about $100. at Wally World. I noticed that this thing does not appear to have a compressor or regular cooling system, which leads me to believe that it is working under the same principals as those little cooler/heaters that you plug into your cigarette lighter of your car. My question is does anyone know how these things work... I don't have any experience with these and thought I would pass the question on to you guys... maybe someone understands or knows the working theory behind them.... thanks in advance...