1259 St. George Ave
Roselle, NJ 07203
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888-235-8340 |
Serving Essex, Hudson, Middlesex, Morris, Somerset & Union NJ Counties
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Replacement Windows Tips- Windows U-factor U-factor Joe Percario Contracting offers many Windows with low U-Factor. Low U-Factor windows provide a maximum amount of savings on your energy bill. We guarantee to cut your heating bill by 50% or else we will pay it for you. Here are some tips on U-factor from the country's biggest window manufacturers (including ENERGYSTAR, Andersen Windows, Pella, and Certainteed):
| American Architectural Manufacturers Association Tip:
"The AAMA 1503 test method is based on ASTM methodology. The U-factor is determined under winter, night-time conditions which simulate 70 degrees F on the interior side of the sample and 0 degrees F on the exterior side of the sample. The U-factor measures how well a product prevents heating from escaping from the room; the lower the number, the better." | Energy Star Tip:
"To be eligible for the ENERGY STAR, products must be rated, certified, and labeled for both U-factor and Solar Heat Gain Coefficient (SHGC) in accordance with the procedures of the National Fenestration Rating Council (NFRC) at levels which meet the following ENERGY STAR qualification criteria in one or more Climate Zone. Storm windows, window films and interior doors are not eligible for ENERGY STAR at this time. The lower the U-factor, the better the window insulates." | National Fenestration Rating Council Tip:
"One of the best ways to measure the effect of windows on building energy use is known as a U-factor rating.
U-factor measure how well a product prevents heat from escaping. 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 resistance to heat from and the better it is insulating value."
| Department of Energy Tip:
"U-factor is a measure of the rate of the heat flow through a window. The U-factor is the inverse of the R-value, or resistance, the common measure of insulation. When contracting for residential windows, specify NFRC-rated SHGC and U-factor values that meet this Efficiency Recommendation for your geographical region. When buying commercially, look for windows with EPA/DOE ENERGY STAR label, all of which meet this recommendation. The lower the U-factor, the more energy efficient the windows, doors, or skylight." | Andersen Windows Tip:
"Check the National Fenestration Rating Council Label before you buy. The lower the U-factor, the less you'll spend heating your home. Compare windows to windows. NFRC-certified U-factors are the only measure of whole window thermal performance.
| Certainteed Windows Tip:
"U-value: The rate of the heat flow through a glazing system; the lower the value, the better the insulating quality. U-value can be compared to R-value by dividing by 1 by the U-value.
(Thus, a U-value of 0.5 equals an R-value of 2) | Pella Windows Tip:
"Pella products have been certified by the National Fenestration Rating Council (NFRC), and are clearly labeled with U-value information, Solar Heat Gain (SHGC) and visible light transmittance (VT). You can reduce heating and cooling coasts by replacing old single-pane windows." |
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