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Home / Windows / Energy Efficiency

Energy Efficiency

You have likely heard the term “energy efficiency” before, but you might not be aware of how much having non-energy efficient windows can cost you throughout the year.

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Table of Contents

Understanding Energy Efficiency

The Technology

Savings Calculator

Climate Requirements

Glossary Of Terms

The Technology

Science Behind The Savings

Windows
Doors
Siding

number 1Low-E Glass

Low-E glass is brilliantly engineered to block most UV rays out so your home stays at a comfortable temperature each season.

number 2Warm-Edge Spacer

Intercept™ warm-edge spacer insulates the exterior edges of a sealed unit and can tack on 5% savings on monthly energy costs.

number 3Vinyl Framing

Vinyl window frames are constructed to deliver excellent thermal insulation while sealing out drafts and unwanted weather.

number 1Innovative Weatherstripping

Airtight weatherstripping seals the sides, top and bottom frames of your door to prevent air infiltration.

number 2Insulated Core

An insulated polyurethane core provides an additional thermal barrier for better insulation.

number 3Sturdy Frames

Composite frames resist rotting, rusting and warping to withstand constant exposure to the elements.

number 4Energy-Saving Door Lites

Decorative and ENERGY STAR-compliant door lites are an integral part in a door system’s seal and thermal performance.

number 1Insulated Structure

Built with rigid foam insulation to reduce energy loss and reinforce the siding for smoothness and straight lines.

number 2Energy-Saving Barriers

High-density insulation to minimize outdoor noise for a quieter indoor ambiance and loss of wanted heat or air.

number 3Built to Last

Fully rolled over, double-thick nail hem anchors panels to the wall; tested to withstand harsh weather.

Benefits of Energy Efficiency

Energy-efficient windows from Window World are a wonderful investment for any home. Drawing similarities to a two-way mirror, energy-efficient windows allow visible light to pass through to keep your home well-lit while reflecting long-wave infrared radiation to keep interior temperatures constant. A few added benefits include:

  • 48% reduction in solar heat transfer during the summer months
  • 104% increase in R-value of the glass in winter months
  • The Intercept™ Spacer System will extend the life of your windows

Learn more by watching the video to the left and start enjoying the many benefits of our energy-efficient windows by scheduling a free in-home estimate today!

Reasons to Go Green

  • Homeowners, businesses and large industries save a significant amount of money using energy-efficient products every year.
  • Heating and cooling systems, appliances and lighting products that use less energy release fewer greenhouse gases into the environment.
  • Energy-efficient products like windows and doors help to improve the comfort of homes and commercial buildings during extreme weather conditions.
  • Window World of St. Louis offers energy-efficient products that deliver quality, comfortability and affordability so it’s easy to go green.

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. Window World offers many ENERGY STAR® qualified glass packages. Explore the requirements to become ENERGY STAR-certified below and see 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 performs. 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 St. Louis 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.

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 an ideal agent for year-round comfort.

Make Your Home Energy-Efficient

In warm months, energy-efficient products trap undesirable warm air outside. Alternatively, in cold months they wrap your home in a blanket of insulation, keeping your heat inside and protecting your interior from cold drafts. Energy-efficient products offer a myriad of benefits, both economically and environmentally.

  • Energy-efficient products save homeowners, businesses, and large industries a significant amount of money every year.
  • When heating and cooling systems, appliances, and lighting products can reduce the amount of energy they use, fewer greenhouse gases seep into the environment.
  • Some energy-efficient products, such as windows and doors, keep a home or commercial building much more comfortable during extreme weather conditions.

Here at Window World of St. Louis, we believe our customers should never have to sacrifice quality, comfortability or affordability. With our energy-efficient products, you can have it all.

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