This exam is required to be passed to obtain your State license. We stock all reference books in our online store. Shipping is always fast and affordable.
About This License
Heating, Group 2, means an air conditioning system which consists or an assemblage of interacting components producing conditioned air for comfort cooling by the lower of temperature, and having a mechanical refrigeration capacity in excess of 15 tons, and which circulates air. If you are performing cooling work that requires less than 15 tons, only a Group 3 license is required.