i have a prime tower chiller. I paid 525.00 for my unit last year. I had the 1/4 hp unit. The thermocouple went out las tmonth. IT was coroded. As a result, they sent me a stainless steel replacement. Putting in the new part was a snap. However, when I re-attached the hose, I broke the water in-let by torking the fitting down too much. It cracked. Prime said these should only be hand tight, and that it happens quite often.
They were really great about the whole thing. They told me to send the unit back and they would get me out a refurbished unit right away. They ended up sending out a 1/3 hp unit. I ended up with a larger unit than what I sent to them. The unit had some slight scratches, but I really can not complain. I was very happy with their customer service. And they didn't charge me anything either. The prime units are really ok in terms of beign quiet. I seem to think the Arctica units are quieter, but for the money, the Prime unit is great.