The International Association of Plumbing and Mechanical Officials releases the hardcopy and digital versions of its 2015 edition of the Uniform Solar Energy and Hydronics Code. Both are viewable on computers, tablets and smartphones, and can be purchased and downloaded via the IAPMO web store. Additions include alternative engineering design provisions, condensates waste and control provisions, solar thermal provisions, geothermal energy systems chapter, hydronics chapter and duct systems chapter.