The Burnham Alta's simplicity is unmatched in heating technology and efficiency. Their ingenuity is responsible for some of the most efficient boilers on the market today. The Alta high efficiency gas boiler is easily the most advanced boiler ever made. By reusing heat contained in the exiting flue gasses and adjusting firing based on current needs, the Alta can achieve 95 percent efficiency. The Alta's advanced technology also makes installation and operation of your boiler easier than ever. Easy lift, wall hanging design, no-touch combustion setup, and interface prompts all contribute to its ease of use. Getting the most out of your energy dollar doesn't have to be a complicated affair, and Burnham proves it with the Alta.