Storm Or Hail Damage? We Can Help! Learn More About Our Emergency Storm Services & Call Now For Relief.

Storm Or Hail Damage? We Can Help! Learn More About Our Emergency Storm Services & Call Now For Relief.

Energy-Efficient Windows: Save on Energy Bills & Reduce Drafts In Your Home

Posted on November 29, 2023

Energy-Efficient Windows: Save on Energy Bills & Reduce Drafts In Your Home

Are you tired of high energy bills and uncomfortable indoor temperatures? It’s time to explore the world of energy-efficient windows! These modern marvels can significantly reduce your energy consumption while enhancing your home’s comfort. Whether you’re tired of drafty old windows or are looking to lower your energy bill, installing new energy-efficient windows will help make your home and wallet more comfortable. 

In this comprehensive guide, we’ll cover everything you need to know about energy-efficient windows, from understanding their key components and types to choosing the best windows for your home, along with how to maintain them for optimal performance. 

Understanding Energy-Efficient Windows

Energy-efficient windows are specifically designed to minimize heat loss or gain, which helps decrease energy consumption and enhance your home’s comfort by maintaining a comfortable temperature throughout the year. They often include multiple glass panes separated by gas fills and low-E coatings to reduce heat transfer. With these types of windows, you’ll benefit from lower monthly utility bills, increased comfort, protection for your furniture from direct sunlight, reduced window condensation, and prevention of mold growth and damage to paint and wood.

One of the best examples of an energy-efficient window is one that is certified by Energy Star, which means the window has undergone rigorous testing and certification processes to ensure its performance in reducing energy costs and improving home comfort. With so many benefits, it’s no wonder why more and more homeowners are opting for energy-efficient windows as a smart investment in their homes.

What Makes A Window Energy-Efficient?

The window frame material, glass type, and performance ratings are the essential elements of an energy-efficient window. Your choice of window frame material will greatly impact the window’s energy efficiency. You can choose from options such as vinyl, wood, and Fibrex, a patented material by Renewal by Andersen®,  which offers enhanced weathertight protection and energy efficiency.

Glass types play a crucial role as well. Double-pane and triple-pane glass are the go-to options when it comes to energy-efficient windows. They are the two most frequent types of glass used, as windows with this glass typically feature a space between the panes that are filled with insulating gases like argon or krypton, which provide better insulation than air. Furthermore, low-E coatings can be applied to the glass to reduce its solar heat gain coefficient, further enhancing energy efficiency.

Evaluating the energy efficiency of windows also involves assessing their performance ratings. The National Fenestration Rating Council (NFRC) is a non-profit organization that provides independent performance tests to measure and rate the energy efficiency of windows and doors. The NFRC evaluates the following factors to rate a window’s energy efficiency:

  • Solar heat gain (U-Factor)
  • Visible transmittance
  • Air leaks
  • Condensation resistance
Image of suburban home with recently installed windows

Types of Energy-Efficient Windows

There are various types of energy-efficient windows available in the market, such as double-pane, triple-pane, and Low-E glass windows. Double-pane windows are recommended for optimal energy efficiency and cost-effectiveness. However, each type has its own advantages and is suitable for different climates and specific energy needs.

Grasping the differences between these types of windows can aid in making an informed decision when selecting the right energy-efficient windows for your home. 

Double-Pane Windows

Double-pane windows offer improved insulation and energy efficiency compared to single-pane windows, making them a popular choice for homeowners. These windows consist of two panes of glass separated by a spacer material, with the space between the panes often filled with insulating gases like argon or krypton.

The additional layer of insulation in double-pane windows acts as a barrier, limiting the transfer of heat between the interior and exterior of the home. This increased insulation helps:

  • Reduce condensation
  • Stabilize interior temperatures
  • Make your home more comfortable
  • Make your home more energy-efficient.

Triple-Pane Windows

Triple-pane windows provide even better insulation and noise reduction than double-pane windows, making them ideal for extreme climates or homeowners seeking maximum energy efficiency. These windows have three layers of glass placed between two sealed air spaces, providing greater energy efficiency than double-pane windows.

In addition to superior insulation, triple-pane windows also offer improved noise reduction due to the additional pane of glass, which helps block and absorb sound waves, reducing the amount of noise entering the room. If you live in an area with extreme temperatures or want the ultimate energy-efficient windows, triple-pane windows might be the right choice for you.

Low-E Coated Windows

Windows with a low-E coating reduce solar heat gain and UV light penetration, further enhancing the energy efficiency of the window. These coatings can be paired with triple-pane, or double-pane windows, or can simply be utilized on its own. 

Some benefits of low-E glass windows include:

  • Reducing solar heat gain
  • Preventing UV light penetration
  • Reflecting UV and infrared light
  • Preventing unnecessary warming of the house
  • Reducing the workload of the HVAC system

There are two basic types of low-E glass coatings used for energy-efficient windows: passive low-E coatings and solar control low-E coatings. By choosing the right type of low-E coating for your home’s windows, you can further improve the energy efficiency of your home and save even more on your energy bills.

How to Choose the Right Energy-Efficient Windows

Having familiarized yourself with the various types of energy-efficient windows and their key components, you can now proceed to select the best windows for your home. This process involves:

  1. Assessing your home’s energy needs
  2. Comparing window performance ratings
  3. Making an informed decision on the best energy-efficient windows for your specific situation.

Assessing Your Home Energy Needs

Determining the most suitable type of energy-efficient windows for your home involves assessing your home’s energy needs. This includes considering factors like climate, existing insulation, and your home’s energy consumption. Climate is a significant factor, as the most suitable window for one region of the country may not be the most suitable for another. For example, gas-filled windows are suggested to minimize heat loss in colder climates, while windows with low-E coatings that minimize heat gain are preferred in warmer climates.

Upgrading old, outdated windows to double-pane windows can result in energy savings of up to 10-12% per year, translating to savings of $100 to $600 annually on energy bills.

Comparing Window Performance Ratings

Following the assessment of your home’s energy needs, the next crucial step is comparing window performance ratings to make a choice on the best energy-efficient windows for your home. Factors like U-factor, solar heat gain coefficient, and visible transmittance should be taken into consideration when evaluating window performance ratings.

The U-factor measures the rate at which non-solar heat is able to pass through your windows, with lower values indicating better insulation and higher energy efficiency. The solar heat gain coefficient (SHGC) measures the amount of solar heat transmitted through a window, with lower values indicating less solar heat gain and increased energy efficiency in hot climates. Visible transmittance (VT) describes the ability of a window to transmit visible light, with higher values indicating greater natural light transmission through the window. By comparing these ratings, you can make an informed decision on the best energy-efficient windows for your specific needs.

Bay widows installed in a suburban Columbus, OH home.

Cost Considerations for Energy-Efficient Windows

When deciding whether to invest in energy-efficient windows, it’s important to understand the cost associated with them. You should consider factors such as the initial investment, installation costs, and potential savings on energy bills. Keep in mind that investing in energy-efficient windows may require a higher upfront cost, but the long-term savings on your energy bills will often offset this high price.

Here’s a closer look at the various cost considerations: 

Initial Investment

The initial investment for energy-efficient windows can range from $300 to $2,000 per window, depending on factors such as size, material, and installation. While the cost of energy-efficient windows may be higher than standard windows, the long-term savings on energy bills can offset the cost difference.

For example, upgrading to double-pane windows can result in energy savings of up to 10-12% per year, translating to savings of $100 to $600 annually on energy bills. Furthermore, many energy-efficient windows qualify for tax credits or rebates, which can help reduce the overall cost of the investment.

Installation Costs

Installation costs for energy-efficient windows can vary depending on factors such as window size, type, and professional labor fees. 

While installation costs can add to the overall expense of energy-efficient windows, it’s important to remember that proper installation is essential for achieving optimal energy efficiency and comfort in your home. By investing in professional installation, you can ensure that your new windows will provide the maximum possible energy savings and comfort for years to come.

Maintaining Energy-Efficient Windows

Maintaining the performance and longevity of energy-efficient windows requires proper maintenance. This includes:

  • Regular cleaning
  • Inspection
  • Weatherstripping
  • Sealing
  • Repair or replacement of damaged windows

By following these tips, you can maintain the energy efficiency of your windows and continue to enjoy the benefits of lower energy bills and a more comfortable home.

Here are some specific tips on maintaining energy-efficient windows, which can help you maximize your investment.

Regular Cleaning and Inspection

Regular cleaning and inspection of energy-efficient windows can help identify any issues early on and prevent potential energy loss. When conducting an energy-efficient window inspection, look for common issues such as:

  • Faulty operation or hardware issues
  • Cracked or broken windows
  • Leaky windows
  • Air leaks

Addressing these issues promptly will ensure the optimal energy efficiency and comfort of your home.

It is recommended to inspect energy-efficient windows at least once a year to ensure they are in proper working condition and that their energy-saving properties remain intact. Regular cleaning also helps to eliminate dirt, dust, and other debris that can reduce the efficiency of your windows.

Weatherstripping and Sealing

Weatherstripping and sealing around windows can further improve insulation and energy efficiency, reducing drafts and air leaks. Weatherstripping forms a tight seal around windows, blocking drafts and reducing energy loss. By closing any gaps or leaks, weatherstripping helps to maintain a consistent internal temperature, thereby reducing the burden on heating and cooling systems.

Repair and Replacement

Energy-efficient windows should be replaced when they reach around 20 years of age. In the meantime, addressing any damage and applying high-efficiency coatings can help maintain the windows’ energy efficiency. The cost of repairing energy-efficient windows may vary depending on the severity of the damage and the size of the window, with estimates ranging from $200 to $800.

By staying on top of repairs and replacements, you can ensure the continued energy efficiency of your home.


Energy-efficient windows are a smart investment that can significantly reduce your energy bills, enhance your home’s comfort, and contribute to a more sustainable future. By understanding the key components, types, and cost considerations of energy-efficient windows, you can make an informed decision when choosing the right windows for your home. Proper maintenance and care will ensure the continued performance and longevity of your windows, allowing you to reap the benefits of energy efficiency for years to come. 

Always look for professional help when installing energy-efficient windows, as this will ensure that you receive all the benefits mentioned in this blog post. If you’re ready to replace the windows in your Columbus, OH, home with new, energy-efficient ones, the team at Bristlewood Roofing & Remodeling is here to help. Contact us today to learn more about improving the energy efficiency of your home and how you can save on your energy bills. 

Frequently Asked Questions

How are windows rated for energy efficiency?

Windows are rated for energy efficiency by the National Fenestration Rating Council (NFRC) using five major categories. One of these factors includes whether a window’s U-factor ratings fall between 0.20 and 1.20. The lower the U-value, the better a window’s insulation value, representing the entire window performance including frame and spacer material.

How much can I save on energy bills by replacing my windows?

On average, you’ll save between $100 and $600 per year, depending on the climate and the number of windows in your home.

What is the difference between double-pane and triple-pane windows?

Double-pane windows provide better insulation and energy efficiency compared to single-pane; while triple-pane windows provide even greater levels of insulation and noise reduction, making them ideal for colder climates or those seeking maximum energy efficiency.