On average, a homeowner can spend up to $2,500 of their yearly heating / cooling bills, and other household energy consumption costs. While you have no control over the ongoing fluctuation of fuel costs and energy company rate hikes, it's nice to know that you do have a choice when selecting from our inventory of
energy-efficient windows and doors
With all of the technological advancements in the design, construction, and availability of energy rating systems, not only can you find handsomely designed,
architecturally appealing windows and doors, but you can be assured of their ability to keep your home at a comfortable temperature as they reduce your home's energy costs.
This drop in energy consumption also benefits the environment, since less fossil fuel and coal will be burned, resulting in a reduction carbon emissions.
What makes a window or door energy efficient?
The primary factors that go into energy-efficient designs include:
- How the frame and sashes are engineered and built
- The type of glass used (single, double, or triple pane)
- Weather stripping
- The type of low-emissivity coating on the glass
- The presence of argon or krypton gas
As experts in
energy-efficient doors and windows, the Alpha team will help you navigate through all of the applicable ratings, which otherwise may be a confusing process for the layperson.
What is an 'R-value' and how important is it in selecting the right windows and doors?
Although the U-value is actually the important number in evaluating windows and doors today, most people are more familiar with the related concept of R-value (or R-factor). The R-factor of a window or door is
the measure of its resistance to the transfer of heat flow. The higher its R-value, the greater its insulating capability.
Then, what is a 'U-value'?
The
U-value (or U-factor) is the measure of the window's ability to conduct heat-in other words,
the amount of heat transmitted through the window. The lower a window's U-value, the better it is at insulating your home.
What is the Solar Heat Gain Co-efficient?
The Solar Heat Gain Co-efficient (SHGC) represents
the amount of heat going into a house. The lower the number, the less heat penetrates the house. When a home is primarily air-conditioned, the SHGC value is the correct rating to be aware of when selecting from the product lines offered by
Alpha Windows and Doors.
Hurricane impact-resistant windows or doors with Clear glass feature a SHGC of 0.72, while Bronze and Gray glass hold a 0.55 and 0.56 SHGC value, respectively. So, the darker the appearance of the glass, the less heat can get through a window or door.
What is the NFRC and what should I know about it?
NFRC stands for the National Fenestration Rating Council. It's a program established by the U.S.
Department of Energy (DOE) to help consumers compare various
window and door products.
Window and door manufacturers who voluntarily participate in this program are required to label every unit to its specific thermal performance level.
This rating program acts as a customer's guide to the products they are considering, so they will know which
windows and doors meet the NFRC production and energy conservation standards.
Not all manufacturers participate in this program, because it requires outside third party inspections and extensive product testing, which affects their bottom line.
What is ENERGY STAR®?
ENERGY STAR is a program run by the U.S.
Department of Energy and Environmental Protection Agency (EPA) that helps individuals and businesses protect the environment through greater energy efficiency.
The ENERGY STAR label can be applied only to
windows and doors that meet specific U-value and Solar Heat-Gain Co-efficient ratings for one or more regions of the United States.
These ratings are achieved through independent testing done in accordance with
NFRC (National Fenestration Rating Council) standards.
Each window and door design has its own set of applicable ratings, which takes into account manufacturing variables, such as:
- Glass type
- Frame material
- Style and product design
To learn more about the
ENERGY STAR program, visit their website at www.energystar.gov.
What is 'Low-E' and how important is it to have it on your impact windows and doors?
Low-E stands for low emissivity and is a fairly new advancement in glass technology. Basically, it's a microscopic, metallic coating applied to a surface of glass that reflects and re-radiates heat energy either into or out of a home, depending upon climate conditions.
Having a Low-E coating application is an excellent way to increase the
energy efficiency of windows and doors, since it directly affects how heat comes into or is kept out of your home.
