0.081 density of air (lb/cu ft) x 0.240 heat capacity of air (BTU/lb °F) x 2008 CDD (°F day) x 6 CFM x 24 hrs/day x 60 min/hr = 337,267 BTUs
Step 2 determine heating energy
0.081 density of air (lb/cu ft) x 0.240 heat capacity of air (BTU/lb °F) x 2914 HDD (°F day) x 6 CFM x 24 hrs/day x 60 min/hr = 489,440 BTUs
Step 3 determine cooling utility used cool air
337,267 BTUs / 15 SEER (BTU/W hr) / 1,000 W/kW = 22.5 kWh per year
Step 4 determine heating utility used heat air
489,440 BTUs / 8.2 HSPF (BTU/W hr) / 1,000 W/kW = 59.7 kWh per year
Step 5 determine cooling savings
22.5 kWh x $0.118 = $2.65 per year
Step 6 determine heating savings
59.7 kWh x $0.118 = $7.04 per year
Step 7 determine total savings
22.5 kWh cooling + 59.7 kWh heating = 82.2 kWh total savings per year
$2.65 cooling + $7.04 heating = $9.70 total savings per year
82.2 kWh x 15 = 1,232.6 kWh lifetime savings
$9.70 x 15 = $145.44 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.
