"According to independent estimates, heating and cooling systems account for between 30 and 50 percent of a home's yearly energy budget. Because this represents the lion's share of home energy use, the HVAC industry has been an attractive target for attempts to reduce energy consumption, lower utility bills, and ultimately, save the planet.
However, heating and cooling equipment manufacturers -- especially furnaces, boilers, and other heating equipment -- have run into something of a brick wall in terms of wringing out greater operational efficiency. For a number of reasons, there are currently few opportunities to substantially improve the efficiency of the installed base of equipment.
What, then, will be the next great innovation and where will it come from?"
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