Summary: Extremely expensive product that stops working properly after 2 years. Frost started to build up in the back panel of my freezer, called the customer service who said the warranty is only 2 years and only the closed loop system is covered up to 5 years. He promptly said the problem is unlikely the closed loop system because the freezer is cooling and said good luck. You pay 5 times the price to have things break in 2 years with no warranty. HORRIBLE.