Definition of the term U-Value

A measure of air-to-heat transmission (loss or gain) due to the thermal conductance and the difference in indoor and outdoor temperatures. As the U-value decreases, so does the amount of heat that is transferred through the glazing material. The lower the U-value, the more restrictive the fenestration product is to heat transfer. Reciprocal of R-value.

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About the Home Inspector
Dan Joandrea

- I have been working in the home remodeling / construction industry for over 11 years. I have decided to open a home inspection company to help real estate home buyers to make an informed decision before making their biggest investment of their life. The home inspection is a very important step when purchasing a home.