This tool is meant to provide relative and/or modeled comparison of different fuel types as they relate to heating/water heating.  Current or anticipated fuel costs are one of many factors to consider when making heating/water heating decisions.  System cost, efficiency, maintenance, lifetime operation, available options, and functionality are other important considerations.  We encourage you to learn more about options to determine the best fit for your personal circumstances.  The Home Energy Library is a great place to start.