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Energy Efficiency

Increasing your home’s energy efficiency allows you to save money and the environment—without sacrificing an amenity.

Never Sacrifice Your Comfort
Boost Your Home's Energy Efficiency Today!

Table of Contents

Understanding Energy Efficiency

The Technology

Science Behind The Savings

Windows
Doors
Siding

Low-E Glass

Low-E glass is brilliantly constructed to minimize the amount of UV rays and unwanted temperatures into your home.

Warm-Edge Spacer

Our Duralite spacer system has no metal so the glass edge is up to 45% better insulated against energy loss.

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.

 

Help Save Energy and the Environment

In most instances, your windows come standard with the ENERGY STAR®-qualified SolarZone™ insulated glass package.

Window World of Connecticut’s replacement windows are already designed for superior thermal performance. By choosing our SolarZone™ Insulated Glass Package, featuring the Duralite® spacer system, you can help reduce your energy costs even more, while helping cut consumption of the fossil fuels that pollute our environment.

What Makes the SolarZone™ Insulated Glass Package So Effective?

Since over 80% of a window is glass, substantial heating and cooling savings come from improved glass performance.

  • Our Duralite spacer system creates significant energy efficiency. It is 88% less conductive than metal spacers, offering superior insulation performance.
  • Adding Low-E glass to a standard insulating glass unit helps you improve the energy performance of your window year-round by 24%.
  • Adding argon gas filling to the window increases efficiency by another 6%.

The result: your monthly utility bills will reflect savings year round and that should help make you even more comfortable.

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. For all window products, the National Fenestration Rating Council (NFRC) tests and assigns a U-Value rating. 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 Connecticut 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 (low-emissivity) glass has been treated with a microscopic metallic coating designed to filter the amount of UV light that enters your home. By filtering the amount of UV light that enters your home, it keeps the heat gain lower in warm seasons and allows more heat in during cooler months. This keeps your home’s temperature more consistent year-round. By filtering out UV light, low-E glass also prevents fading on your furniture and window treatments.

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.

Argon Gas

Argon is an extremely dense colorless, odorless gas with very low thermal conductivity. It is used as insulation between double-pane and triple-pane windows. When paired with Low-E glass, it keeps the window closer to room temperature, helping eliminate drafts and increase energy efficiency.

Warm-Edge Spacer System

Spacers are placed between double and triple-panes of glass. In the past, they were mainly made of aluminum, which we no longer recommend due to its poor insulating properties. Our Intercept™ warm-edge spacer system extends 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 on the market.


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.

When you install energy-efficient windows from Window World of Connecticut, you’ll see dramatic differences in your heating and cooling bills. Contact our professionals today for a free in-home estimate or to answer any questions you may have about energy efficiency!

Schedule Your Free In-Home Estimate Today.

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