These calculations can be modified by clicking on the underlined values below. See details on assumptions underlying the calculations.

Annual heat load
 Fuel and heating system details
 Fuel price
 Appliance efficiency
 Cost per kWh (adjusted for heat content and efficiency)
 Annual fuel cost
 Fuel escalation rate

Heating system cost

System + lifetime fuel cost
 GHG emissions
 Annual CO2 emissions

Lifetime CO2 emissions
 Loan details
 Build or retrofit cost
 Heating system cost
 Incentive
 Value of loan
 Interest rate
 Term of loan (years)
 Total loan cost (principal + interest

Total loan, heating system and lifetime fuel cost