Programmable Thermostat Measure Name Programmable Thermostat Target Sector Residential Establishments Measure Unit Programmable Thermostat Unit Energy Savings Varies Unit Peak Demand Reduction Varies Measure Life 11years Programmable thermostats are used to control heating and/or cooling loads in residential buildings by modifying the temperature set-points during specified unoccupied and nighttime hours. These units are expected to replace a manual thermostat and the savings assume an existing ducted HVAC system with electric resistance heating and DX cooling. A standard programmable thermostat installed on a heat pump can have negative energy consequences. However, the option exists to input higher efficiency levels if coupled with a newer unit. The EDCs will strive to educate the customers to use manufacturer default setback and setup settings. Algorithms kWh = kWhCOOL + kWhHEAT kWhCOOL = CAPCOOL/1000 X (1/(SEER x Effduct)) X EFLHCOOL X ESFCOOL kWhHEAT = CAPHEAT/1000 X (1/(HSPF X Effduct)) X EFLHHEAT X ESFHEAT kWpeak = 0 Definition of Terms CAPCOOL = Capacity of the air conditioning unit in BTUh, based on nameplate capacity. CAPHEAT = Nominal heating capacity of the electric furnace in BTUh Effduct = Duct system efficiency SEER = Seasonal energy efficiency ratio of the cooling unit. HSPF = Heating seasonal performance factor of the heating unit. ESFCOOL,HEAT = Energy savings factor for cooling and heating, respectively EFLHCOOL, HEAT = Equivalent full load hours for cooling and heating, respectively
Programmable Thermostat Measure Name Programmable Thermostat Target Sector Residential Establishments Measure Unit Programmable Thermostat Unit Energy Savings Varies Unit Peak Demand Reduction Varies Measure Life 11years Programmable thermostats are used to control heating and/or cooling loads in residential buildings by modifying the temperature set-points during specified unoccupied and nighttime hours. These units are expected to replace a manual thermostat and the savings assume an existing ducted HVAC system with electric resistance heating and DX cooling. A standard programmable thermostat installed on a heat pump can have negative energy consequences. However, the option exists to input higher efficiency levels if coupled with a newer unit. The EDCs will strive to educate the customers to use manufacturer default setback and setup settings. Algorithms kWh = kWhCOOL + kWhHEAT kWhCOOL = CAPCOOL/1000 X (1/(SEER x Effduct)) X EFLHCOOL X ESFCOOL kWhHEAT = CAPHEAT/1000 X (1/(HSPF X Effduct)) X EFLHHEAT X ESFHEAT kWpeak = 0 Definition of Terms CAPCOOL = Capacity of the air conditioning unit in BTUh, based on nameplate capacity. CAPHEAT = Nominal heating capacity of the electric furnace in BTUh Effduct = Duct system efficiency SEER = Seasonal energy efficiency ratio of the cooling unit. HSPF = Heating seasonal performance factor of the heating unit. ESFCOOL,HEAT = Energy savings factor for cooling and heating, respectively EFLHCOOL, HEAT = Equivalent full load hours for cooling and heating, respectively
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