Use this simple calculator to determine your Home Heating Index (HHI), which is a benchmark of how efficiently heating fuel energy is used in your home. High HHI values may qualify your home for weatherization services or other money saving solutions.

 Getting Started

In order to continue, you will need:

• 12 months of heating bills or a 12 month summary statement of your heating usage.
• The square footage of your home.

 Step 1: Your Home

 Step 2: Your Energy Use

Enter the amount of fuel used to heat your home for 12 months. If you use more than one fuel enter each of their values. Maximum 2. If you use the same fuel for heat and hot water, estimate the amount used for heating only.