Online home audit tells you the most effective energy-saving improvements to make

Whether you're a Duke Energy customer or not, you can use this online home energy audit to figure out the most effective ways to reduce your home's energy consumption.  Contrary to what you might think, starting with a full window replacement might not be the best bang for the buck. 

The site asks you a series of questions about your home, your appliances, your energy use patterns, and your previous energy bills.  It then makes customized recommendations designed to maximize your savings and minimize the stress on your wallet.

Link:  https://www.energyguide.com/ha/Welcome.aspx