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Office of Energy Efficiency Links


Business: Residential

Tools and Calculators

Boiler Efficiency Calculator

The Boiler Efficiency Calculator is designed to assist those responsible for natural gas and fuel oil-fired heating and steam plants to quickly analyze the efficiency of their boiler operations.

Energy Consumption

Determine your energy consumption and uncover potential efficiencies.

Energy Intensity

Determine your facility's energy intensity by fuel type. Our energy calculator will make the job easier.


RETScreen helps the user determine how much money they would save by using renewable energy technologies. This helps them choose the appropriate component or system for their projects and avoid wasting money.

Transportation-Related Calculators