The 1990s: Technological Breakthroughs And Higher Efficiencies
When writing about the residential-commercial building heating trends of the 1990s, one must first start with the “paradigm” that created the heating changes of the 90s: the Pulse furnace.
Now, some (possibly many) may object to targeting this residential forced-air product, which could be argued as hardly representative of the entire spectrum of commercial-residential heating products (although residential forced-air gas heating represents the largest portion of the heating market in North America).