What Is All This U-Factor Business?

Posted Mon, 06/29/2009 - 18:23 by Total Home of Kansas

As a replacement window shopper, you’re expected to be somewhat of an expert in the field in order to make a qualified, appropriate decision. But I happen to think this expectation is just a little unfair.

Have you ever talked to a salesman who promoted his product by telling you that his product was the best (fill in the blank) ever. And although you were pleased to find out that you were learning about an awesomely (fill in the blank) product, you had no clue what relevance that (fill in the blank) rating/fact/measurement really meant?

U-Factor, for example. This is one of those items that tends to confuse and clutter the decision making process for most consumers.

The U-Factor measures how well a window prevents heat from escaping. It is the inverse of the R-Value (1/R Value). U-Factor ratings generally fall between 0.20 and 1.20.

The lower the U-Factor, the greater a window’s resistance to heat flow and the better its insulating value will be.

In terms of energy efficiency, the U-Factor is included in the energy performance rating offered by the NFRC.

In short, the lower the U-Factor, the better.

This entry excerpted from http://totalhomeblog.com/blog/u-factor-101/

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U-factor

by marky-boy - 07/07/2009 - 19:21

The rate of heat loss is indicated in terms of the U-factor (U-value) of a window assembly. The insulating value is indicated by the R-value which is the inverse of the U-value. The lower the U-value, the greater a window's resistance to heat flow and the better its insulating value.

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