Certispec

Certispec Sizing Application

Annual Fuel Consumption

Cost Per Therm

Therms transferred into the water at % Efficiency

Gas Efficiency Comparison
Gallons of water heated to 100 degree rise	172900
Therms wasted due to efficiency	100
What you pay for the fuel	1208
Amount of fuel costs transfered into hot water	1148
What you wasted due to 5% inefficiency	60
Savings Over % Efficiency	302
Savings Over % Efficiency	181

Electric Efficiency Comparison
kW Input
Cost Per kilowatt hour
Electricity Costs	0.50
Equivilant Gas BTU's	20472
Equivilant Therms	0.20
Natural Gas Fuel Costs	0.12
Per Hour Savings, Gas vs Eletric	0.38

****Note. This fuel cost calculator is provided for comparison purposes only. Operating cost may vary based on actual usage.