thermostats savings calculations

These calculations display your estimated savings based on assumptions below

For customized calculations enter your own data in the green fields

iDevices Thermostat iDevices Thermostat
non-programmable thermostat
type of heater

cost per kilowatt hour
cost per therm
cost per CCF
cost per cubic meter
1 CCF = 103,100 BTU = 1.031 therm
1 m3 = 35.31 ft3 = 0.3531 CCF
Heating Seasonal Performance Factor (HSPF) BTU/(W hr)
Seasonal Energy Efficiency Rating (SEER) BTU/(W hr)
Annual Fuel Utilization Efficiency (AFUE) %
Heater capacity BTU/hr
Air conditioner capacity BTU/hr
Time heating without programmable thermostat hours
Time cooling without programmable thermostat hours
Time heating with programmable thermostat hours
Time cooling with programmable thermostat hours

How your savings are calculated

Step 1 determine heating and cooling saved

2079 hours - 1726 hours = 353 heating hours saved

1118 hours - 928 hours = 190 cooling hours saved

Step 2 determine energy savings for heating

36,000 BTU/hr heating capacity / 8.2 HSPF = 4390 W (efficiency-adjusted)

4390 W / 1,000 W/kW = 4.39 kW

4.39 kW x 353 hours of heating saved = 1549.67 kWh saved

Step 3 determine energy savings for cooling

36,000 BTU/hr cooling capacity / 15 SEER = 2400 W (efficiency-adjusted)

2400 W / 1,000 W/kW = 2.4 kW

2.4 kW x 190 hours of cooling saved = 456 kWh saved

Step 4 determine total savings

1549.67 kWh saved on heating + 456 kWh saved on cooling = 2,006 kWh saved yearly

2,006 kWh yearly savings x 15 year expected life = 30,085 kWh lifetime savings

2,006 kWh saved x $0.118 per kWh = $236.67 total yearly savings

30,085 yearly savings x $0.118 per kWh = $3,550.04 lifetime savings
Savings calculations are presented as an example of potential savings; actual savings may vary based on use, utility rates and other factors. Calculations are based on national averages and assumptions and may be adjusted for a more accurate estimate of individual savings. While EnergyEarth strives to provide the most accurate information, we cannot guarantee the savings displayed.