Learn more about the base model and other assumptions.

Project Type
Is this a new installation or a replacement?
What is the deliverable fluid type?
What fuel is used?

Performance Factors

Cost Factors

*1 MBtu equals 1,000 Btu
*1 therm natural gas equals 100,000 Btu
*1 gallon No. 2 fuel oil equals 140,000 Btu

** Value entered should be equivalent full load hours (e.g. 3,000 hours at 50% load equals 1,500 full load hours)