The 2009 IRC and IECC codes will make newly constructed homes both more energy efficient and more sustainable. One point addressed is programmable thermostats."... 2009 International Residential Code (IRC) or International Energy Conservation Code (IECC) will ... increase energy efficiency... also address sustainable building practices ..."
"Where the primary heating system is a forced-air furnace, at least one thermostat per dwelling unit shall be capable of controlling the heating and cooling system on a daily schedule to maintain different temperature set points at different times of the day...."
" ... typical programmable thermostat will add between $20 and $40 over the cost of manual thermostats. ... can save about $150 a year in energy costs."
Via: GreenBuildingAdvisor.com LINK
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