MARVIN LEADS THE WAY IN ENERGY EFFICIENCY
Marvin is the market leader in energy-efficient windows and doors. We offer more than 150,000 energy-efficient window and door options, along with the superior quality and made-to-order flexibility that all our products are known for.
With Marvin, you can create the right solution for any project in any climate. Marvin provides best-in-class products that will help limit your energy costs -- without sacrificing quality, appearance or durability.
Marvin continually strives to improve the energy efficiency of its windows and doors. Our new window and door offerings include new glass options, new coating options and design refinements that make our products more energy efficient than ever.
Our guiding principle: Windows and doors should be beautiful, functional, durable and energy efficient.
THE ENERGY EFFICIENCY STORY
Windows and doors are key to your home’s comfort and energy efficiency. Outdated or failing windows are responsible for a large percentage of the wasted energy in homes and other buildings.
In the winter, windows can leak heat or block too many of the sun's warming rays -- meaning you burn more fuel and pay higher utility bills. In summer, poorly performing windows let cool air escape and fail to reflect outdoor heat.
Today’s windows and doors are far more energy-efficient than those of even 10 years ago. Modern, energy-efficient windows and doors can save you 15 to 25 percent on your monthly heating and cooling bills, according to the U.S. Department of Energy.
Where single sheets of clear glass once ruled the day, there are now windows with multiple glass layers. Special coatings on the glass reflect sunlight and ultraviolet rays without dimming the view. Gases injected between panes create extra insulation. Advanced framing materials and innovative design provide further efficiency gains.
Marvin operates at the leading edge of window and door technology. With Marvin, you can have it all -- products that look great and function flawlessly.
Performance Label Explained
The ENERGY STAR area at the top of the label shows the regions in which the product that the label is attached to is certified by highlighting that area of the country. Currently there are four ENERGY STAR zones in the United States and four in Canada, where Marvin Windows offers solutions for each zone, no matter where you are. With our wide selection of products and options, you’re sure to find a Marvin ENERGY STAR rated product to fit your needs.
Find the current ENERGY STAR requirements for windows.
The NFRC label is a bit like the mileage "sticker" on a new car. Instead of miles-per-gallon, however, the NFRC label tells us how well a window or door does in a number of efficiency tests. The results are more than the boasts of a manufacturer. The NFRC certifies the data, ensuring uniform, third-party testing and reporting methods across the entire window-and-door industry. When you use NFRC performance values to compare energy efficiency, you know you're comparing apples to apples.
If you're new to buying windows and doors, the NFRC label takes some explaining.
Here's how the NFRC explains the label.
U-Factor
U-factor is a measure of heat transfer through the whole product, frame and glass. The lower the U-factor, the better the window or door is at keeping the heat from passing through the product.
Solar Heat Gain Coefficient
Solar Heat Gain Coefficient (SHGC) measures how well a product blocks heat caused by sunlight. The SHGC is the fraction of incident solar radiation admitted through a window (both directly transmitted and absorbed) and subsequently released inward. SHGC is expressed as a number between 0 and 1 and represents the percentage of total solar heat possible that the entire window or door allows. The lower a window's solar heat gain coefficient, the less solar heat it transmits in the house.
Visible Light Transmittance
Visible Transmittance (VT) measures how much light comes through a product. The visible transmittance is an optical property that indicates the amount of visible light transmitted. VT is expressed as a number between 0 and 1 and represents the percentage of total visible light that the entire window or door allows. The higher the VT, the more light that is transmitted.
Condensation Resistance
This isn’t on the label, but it’s another useful concept to know about.Condensation Resistance (CR) measures the ability of a product to resist the formation of condensation on the interior surface of that product. The higher the CR rating, the better that product is at resisting condensation formation. While this rating cannot predict condensation, it can provide a credible method of comparing the potential of various products for condensation formation. CR is expressed as a number between 0 and 100.