The Propane Education & Research Council introduces the Propane Energy Calculator app. After launching the app, users answer a series of questions. The app then generates the heating system’s projected annual energy costs and CO2 emissions for one year. It compares the results to those of an Energy Star-qualified propane heating system. Users can save the results and email them to customers or contractors. The Propane Energy Calculator app is now available as a free download for Apple and Android mobile devices.