Building wine cellar

[hotwine]

TEng, a cellar is one of those projects you can spend your entire net worth on. Suggest you estimate a budget... just bound it, nothing specific.... "I don't want to spend more than $____." Then estimate your cooling needs, based on the cubic feet of the space you wish to chill. Then find a cooling unit to meet that requirement. Your total budget minus your cooling costs will leave a balance for racks, lighting, floor treatment, insulation, esthetics, etc. Just be careful in selection of a cooling unit.... they're not all created equal. Some exhaust hot air into an adjoining space, many don't provide humidity control (you need to measure the RH in your space to know if that's a problem). Sometimes, a "wine cooler" such as Breezeair or Koolspace isn't the right solution.... I went with an industial unit designed for a walk-in freezer, and it's worked beautifully. Work your design carefully. The racks should be the least of your design problem.