This calculation doesn't account for leaky ducts or poor piping, which may contribute to more energy use. A highly efficient system should have an AFUE rating between 85 and 98.5 percent.

A lack of proper energy management means that your buildings are consuming more than necessary, impacting both your bottom line and the environment. Read more at re:sustain. Not only does ... you ...

Other Recommendations for Making Your Home Energy-Efficient If you’re looking for several big projects to complete in the interest of making your home energy-efficient, here are three suggestions.