World's First Thermal Mass Furnace Invented in St. Louis, MO

Allen Coggins revolutionized the HVAC industry right in the middle of the midwestern United States. Allen is an inventor and a futurist always looking for a better way. He was tired of inefficiently heating his home and created Cocoon - the world's first Thermal Mass Furnace.


It surpasses the efficiency of gas and electric furnaces and approaches that of a geothermal system! It's UL Verified to save up to 41% on energy.


See what NBC has to say about the Cocoon Revolution!



Cocoon is devoted to Affordable Energy Efficiency for Everyone™ and creating Your Path to Energy Independence™!


We're revolutionizing HVAC. We offer the world’s first truly affordable, renewable HVAC products. Our hottest revolution is the world’s first Thermal Mass Furnace.


Our furnace provides reliable, AFFORDABLE, energy efficient climate control surpassing the efficiency of gas and electric furnaces and rivaling the efficiency of geothermal systems at a fraction of the investment.


But we’re not stopping with renewable HVAC. We're creating off-grid power systems, battery back-ups and more. Follow us on Facebook to stay up to date with our latest revolutions!