Energy Efficiency
Window World’s new replacement windows provide substantial energy efficiency and savings for your home. We have saved money and energy for homeowners throughout the state.
What is Energy Efficiency?
With double or triple-pane glass, low-E coatings, and eco-friendly vinyl frames, our windows are designed to be as energy-efficient as they are beautiful. Energy-efficient windows, doors, and siding help keep heated and cooled air inside your home where it belongs. This allows your HVAC system to work more efficiently, reducing the amount of greenhouse gases your home releases into the environment and helping you save money on your energy bills every month.
If you’ve noticed that your energy bills are higher than they have been in the past and there’s not an obvious reason for the increase, your windows may be forcing your HVAC system to work harder. Window World customers report saving money on their energy bills from the first month.
Windows
Doors
Siding
Low-E Glass
Low-E glass is brilliantly engineered to minimize the amount of UV rays and unwanted temperatures into your home.
Warm-Edge Spacer
Intercept™ warm-edge spacer insulates the exterior edges of a sealed unit and can tack on 5% savings on monthly energy costs.
Vinyl Framing
Vinyl window frames are constructed with a complex array of compartments to help trap and repel unwanted weather.
Innovative Weatherstripping
Airtight weatherstripping seals the sides, top and bottom frames of your door to prevent air infiltration.
Insulated Core
Insulated polyurethane core provides an additional thermal barrier.
Sturdy Frames
Composite frames resist rotting, rusting and warping to withstand constant exposure to the elements.
Energy-Saving Door Lites
Decorative and ENERGY STAR-compliant door lites that allow light in but keep the elements out.
Insulated Structure
Built with rigid foam insulation to reduce energy loss and reinforce the siding for smoothness and straight lines.
Energy-Saving Barriers
High-density insulation to minimize outdoor noise for a quieter indoor ambiance and loss of wanted heat or air.
Built to Last
Fully rolled over, double-thick nail hem anchors panels to the wall; tested to withstand harsh weather.
Climate Requirements
Interested in Becoming ENERGY STAR® Certified?
ENERGY STAR is a government-sanctioned symbol for energy efficiency, credibility, sustainability and cost-savings for the consumer. Browse below to explore what’s required to become ENERGY STAR-certified and what it looks like in your region of the country.
U-Value
R-Value
Your Climate
U-Factor Requirements
U-Factor measures the rate at which heat flows through an object. The lower your U-value, the less heat your windows allow through them.
- Northern: ≤ .27
- North-Central: ≤ .30
- South-Central: ≤ .30
- Southern: ≤ .40
R-Value Requirements
R-Value determines how well the insulation inside your window is performing. The higher your R-value, the better insulated your window is.
- Northern: 13 – 21
- North-Central: 13 – 21
- South-Central: 13 – 21
- Southern: 13 – 21
Why You Need A High-Performing Insulated Product
Window World of Spokane is located in ENERGY STAR’s Northern Climate category. To maintain certification here, our windows and doors must maintain a U-Value of ≤ .27 and an R-Factor from 13 to 21.
Glossary Of Terms
Energy-Efficiency Terms You Need To Know
Low-E Glass
Low-E glass is a type of glass that has been treated with a microscopic, metallic coating designed to filter certain types of light into your home. The glass blocks heat gain from the sun’s reflected rays in warmer months and allows warmth from the sun’s shorter rays to flow into your home during cooler seasons.
U-Factor
U-factor measures the rate of heat transfer and how well a window insulates. It is measured on a scale from 0.20 to 1.20. The lower the u-factor, the more effective the window is at insulating.
R-Value
R-value refers to a building material’s insulation level. Each region of the US has an energy-efficient r-value range for windows based on that area’s climate.
Warm-Edge Spacer System
Our Intercept™ warm-edge spacer system is a new-age technology used to extend the shelf-life of window glass by reducing condensation build-up and edge-to-glass temperatures. Designed to seal in escaping heat, this spacer system is the most effective of its kind.
Argon Gas
Argon is a colorless, odorless and nonreactive insulating property with extremely high density and extremely low thermal conductivity, making it a an ideal agent for year-round comfort.
Make Your Home Energy Efficient
When it comes to making your home energy efficient, there really is no risk. The payoff is not only significant, but also tangible. You will reap the benefits in comfortability and cost, as energy-efficient products are an investment that pay for themselves time and time again.
If you’re ready to see the difference and enjoy being comfortable in your home again, contact the professionals at Window World today. We are happy to provide you with a free in-home estimate and answer any questions you may have about energy efficiency!