After a lifetime of tinkering to figure out how to make things work better, Allen Coggins began to notice how older fellow union HVAC tradesmen limped with injuries after years of carrying heavy furnaces up and down stairs. Thinking there had to be a better way, he spent years developing a better furnace that came to be called the Cocoon, an electric furnace that Coggins said marks the first significant change in furnace technology in more than a century, saving 41% in energy costs over a typical furnace...
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