How Much Do Double-Pane Windows Cost?

Highlights

• The typical cost range to install double-pane windows is between $150 and $6,900, with a national average cost of $1,050.

• Some of the main factors that can affect the cost of double-pane windows include the window size, style, and brand; the glass type and fill; the frame material; the scope of the project; the cost of labor and permits; and seasonality.

• Double-pane windows have a number of benefits over single-pane windows, including better insulation, reduced sound infiltration, improved energy efficiency, less condensation, a more consistent temperature, and an increased home value.

• Window installation is a very involved process, and the average homeowner likely won’t have the skills and experience to take it on as a DIY project. A professional window installation company can ensure the windows are installed correctly so there will be no issues caused by improper installation.

Double-pane windows have two glass panes, usually separated with an inert insulating gas, such as nitrogen, krypton, or argon. Sometimes called double-glazed windows, double-pane windows can help save money on heating and cooling costs, lower outdoor noise pollution, reduce condensation, and prevent cold-air drafts. Compared to single-pane windows, they can also diminish carbon emissions. Additionally, they are more energy efficient than single-pane windows, as they provide a higher level of insulation. According to Angi and HomeAdvisor, the cost of dual-pane windows ranges from $150 to $6,900, with the national average at $1,050. The pricing depends on the scope of the project, window size, window-frame material, type of glass, and any additional issues that may arise during installation, especially with older homes. Depending on how the window professional charges, labor can cost from $100 to $300 per double-pane window or $40 to $75 per hour. Keep in mind that large or complex installations can significantly raise the price of labor for the window installation project.

Since old, leaky windows can reduce heating efficiency in the colder winter months and allow cooler air to escape during the hot days of summer, double-pane window replacement can help lower gas and electricity bills. Some homeowners opt for a high-efficiency coating to be applied to the double-pane glass in addition to safety coatings. This low-e, or low-emissivity, coating can diminish energy loss by as much as 30 percent to 50 percent. Learn about the additional benefits of installing double-pane windows, the individual factors that affect double-pane window installation costs, and different types of double-pane windows. Also included are some frequently asked questions that arise when homeowners are considering window replacement and budgeting for double-pane windows.

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Factors in Calculating Double-Pane Windows Cost

How much do windows cost? That depends on several factors. Double-pane window prices can differ from the national average due to window size, style, brand, glass and fill type, frame material, project scope, labor costs, permit fees, and seasonality.

Window Size

Homes have windows in different shapes and sizes. The pricing of double-pane windows can vary widely due to the availability of assorted window sizes. The size of the window pane is determined by multiplying the height of the window by its width. Many homes have a variety of small, medium, and large windows to match the needs of an individual room. The following are examples of different double-pane window sizes along with the average cost range for materials and installation.

• Small double-pane windows. Small windows that can be found throughout a home include basement windows, transoms, fixed decorative windows, and smaller single- or double-hung kitchen and bathroom windows. The cost for these windows ranges from $150 to $500, with the total cost for materials and labor ranging from $300 to $750.

• Medium double-pane windows. Medium windows are most standard single- or double-hung windows, smaller sliding windows, and casement windows. The pricing for these windows runs from $250 to $1,600, and homeowners can expect to pay between $400 and $1,850 for materials and labor.

• Large double-pane windows. Large windows include bay, picture, sliding, and other large decorative types. The price of these windows ranges from $400 to $4,000, and total material and labor costs are between $650 and $4,500.

Window Style

A significant factor that influences double-pane window prices is the window style. The pricing for installation can vary considerably, given the variety of window sizes and styles in homes. The most cost-effective replacement method is for homeowners to use the same size and style as the original window. Replacing windows with a different size and style can drastically increase material and labor costs, since changes to the wall, outdoor siding, and framing will be needed. Some of the most common styles of double-pane window are single- and double-hung, sliding, casement, folding, bay, bow, storm, and fixed or picture windows. Each of these styles is discussed in detail below.

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Window Brand

Most reputable window manufacturers offer a variety of double-pane window options for the home. Some window companies provide custom-size window replacements, while others specialize in specific window-frame material; others make a variety of frame choices. Since many older homes have unusually shaped or odd-size windows, having the option for custom-size windows is beneficial. Many of these companies provide budget-friendly alternatives to their higher-cost windows, so double-pane windows are available to a wide range of homeowners. Below are some respected window companies, the average cost per window, and the total cost, including materials and labor.

Glass and Fill Type

Double-pane windows are typically filled with air; alternatively, an inert gas, such as krypton or argon, can be added to provide a layer of insulation and decrease thermal transfer via the glass window. Many homeowners prefer argon, since its odorless, colorless, and nontoxic properties will not cause harm if the gas leaks into the home. The following are some common glass and fill types along with their cost range and average cost, both including labor.

Frame Material

The window-frame material is another significant factor that affects double-pane window cost. If just the glass needs to be replaced, window-frame material costs will not come into play, but if the frame is in terrible condition and needs to be replaced, homeowners will want to carefully consider the frame material to ensure they stay within budget. The frame material will affect the window’s longevity, energy efficiency, level of maintenance needed, and durability. Each material has its own benefits, cost, insulating properties, look, and maintenance level. Vinyl is the most budget-friendly and low maintenance, but it’s not very durable. Wood window frames are typically more durable but require ongoing maintenance, such as scraping, sanding, and painting. Metal window frames made of aluminum and steel are not well insulated, although some are available with an insulating core. Before deciding on metal window frames, homeowners seeking energy efficiency can double-check to see if an insulating core is available. Fiberglass window frames are low-maintenance and are naturally insulated. Some fiberglass frames are designed to look like natural wood but without the maintenance-heavy requirements. Always double-check with local building codes regarding window requirements for safety and energy efficiency. Listed below are some common window-frame materials, their cost range, and their average cost, both including labor.

Project Scope

In general, the larger the window installation project, the more expensive it will be. The cost of double-pane windows can vary according to the installation location, the complexity of the job, and any additional customizations. The replacement price per window can decrease if homeowners replace multiple windows at the same time.

Depending on the condition of the frame and the surrounding area, repairs or additional structural work may be needed, driving up the overall installation costs. Occasionally, structural issues may not be readily apparent until the old window is removed and the wall is opened up. If a smaller window is replaced by a larger bay or bow window, keep in mind that studs and supports may need to be moved if the wall is load bearing. The cost to open up a load-bearing wall ranges from $500 to $3,000, and repairing or replacing drywall, siding, or trim can increase costs by $300 to $1,000 or more per window.

Labor

The labor cost to replace a double-pane window is typically between $100 and $300 per window or between $40 and $75 per hour. Installation costs for a large bow or bay window can average around $500, and the same is true for changing the shape or size of a window size. Labor costs can be less per window if multiple windows are replaced at once. Here are the average labor prices to install double-pane windows based on the number of windows replaced at the same time.

Permits

Many locations require obtaining a permit, and this fee is often part of the window replacement cost. Be sure to check the local regulations for the type of permit needed and the cost. Many window professionals will acquire the permit as part of the installation, but homeowners will want to double-check to be certain.

Seasonality

Although many window installation companies are busiest in the spring and fall, window installation can be done at any time of the year. Talking with a window installation professional can help homeowners prepare for an installation project during the cold weather or hot summer months. Many window companies offer discounts or deals during their off-season, so it’s smart to take advantage of those offers to save money.

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Additional Costs and Considerations

When budgeting for double-pane window costs, homeowners will benefit from knowing about any additional factors that can add to the overall project price. These can include using the existing frame instead of a full-frame replacement, window coatings, window screens, window treatments, and hurricane shutters.

Existing Frame vs. Full-Frame Replacement

If the existing window frame is in good condition and just the glass needs to be replaced, it will be a less expensive job. It’s important to choose the same glass thickness so it will fit in the existing window frame. If a homeowner decides to change the glass thickness, the frame will need to be replaced so it will fit properly and be energy efficient. If the frame also needs to be replaced, the material will greatly affect the price.

Window Coatings

A window’s efficiency can be intensified by adding a coating to the double-pane glass, such as low-e coating, which will help deflect heat and UV rays. The average cost for low-e coating ranges between $350 to $3,250 for materials and installation. Homeowners in hot climates sometimes opt for a spectrally selective glass coating for their double-pane windows to help deflect more heat away from the windows. The average cost for this type of coating is between $500 and $3,250, which includes the coating and the labor to apply it. Since sunlight can fade flooring, carpets, rugs, artwork on the walls, and furniture, some homeowners choose to add UV coating at a cost of $5 to $12 per square foot to protect against harmful rays. Another option is window tinting for increased privacy and energy efficiency. The cost to add a window tint can be worth it when it comes to actively preventing sun glare and fading, increasing security, and providing heat regulation. Window-tinting costs range from $316 to $907, with many homeowners paying $587 on average.

Window Screens

Many homeowners choose to replace the window screens when they get their windows replaced. One window screen can cost from $70 to $200, depending on the size.

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Window Treatments

Window treatments, such as curtains, drapes, shades, and blinds, provide privacy, heat regulation, light blocking, and decoration. Many homeowners choose to replace their window treatments when they replace their windows. The average cost for replacement ranges from $100 to $800 per window, including hanging hardware, materials, and installation.

Hurricane Shutters

Hurricane shutters are a necessity for those who live in storm-prone areas. To protect windows from high winds and blowing debris during a powerful storm, hurricane shutters are pulled closed over the windows. To install hurricane shutters for twenty windows, the price ranges from $2,500 to $8,000.

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Types of Double-Pane Windows

Double-pane windows come in different styles and types. When homeowners are replacing windows, they commonly replace them with the same type and size as the originals. Changing the size and type of window can significantly increase the cost, since it may involve structural changes to the wall, framing, and exterior finishes.

Since there are many options to choose from when installing or replacing windows, it’s important to think about the function of the window within the room. If the window will be opened and closed often, a double-hung or sliding window might work best. If a window is needed to let in as much natural light as possible and doesn’t need to open, a bay, bow, or picture window might be the best choice. Each type of window has its own benefits, features, and costs. The following are examples of some of the most common types of double-pane windows and their average costs.

Single-Hung

One of the most popular double-pane window options, a single-hung window costs between $250 and $700, including labor. A single-hung window has a bottom sash that moves up and down while the top sash remains stationary. This type of window is considered the most budget-friendly of all the double-pane window options.

Double-Hung

Another very popular double-pane window is the double-hung window. With this type of window, both the top and bottom sashes move to create more airflow. These windows are easier to clean, since both sashes tilt inward to allow access to the outside of the glass. Double-hung double-pane windows cost from $600 to $1,200 installed.

Sliding

Depending on the frame material, sliding sash windows can range from $450 to $1,500 for installation and labor. They work like single- and double-hung windows but move horizontally instead of vertically. These windows have options in which either one side or both sides slide to open and close the window.

Casement

For homeowners interested in a less-obstructed view, solid glass casement windows are an excellent option. These windows use a hand crank to open the window to the left or the right, depending on the model. Double-pane casement windows range from $400 to $800 for materials and installation.

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Folding

Commonly used for sunrooms and enclosed patios, folding windows provide a completely unbarred and unobstructed view when open. These double-pane windows cost from $600 to $1,100 for materials and installation, with an average price of $850, including labor.

Bay

Bay windows have a flat center window and two side windows that are set at 30 to 40 degrees in an angled frame. Bay windows extend out from the exterior of the house and create a shelf on the inside. These types of double-pane windows typically boost the value of the home due to the increased square footage on the inside. Bay windows can run from $700 to $4,800, with an average price of $2,750, including labor. The cost of bay windows can exceed the cost of other types of double-pane windows because of their large size and the expertise needed to install them correctly.

Bow

Bow windows are made from custom curved windows that create a circular area that projects from the side of the house. Somewhat similar to bay windows, bow windows have a minimum of five sections of glass instead of three. Double-pane bow windows can cost from $1,600 to $6,800, with the average cost around $4,200, including labor. The final price of a double-pane bow window depends on the overall size of the window and the number of glass panes used to construct it.

Storm

An easy and budget-friendly way to increase the energy efficiency of a home is to replace single-pane storm windows with a double-pane option. Storm windows can help cut down on outside air coming into a home, and the double pane acts as extra insulation. The cost of a double-pane storm window ranges from $150 to $600, with many homeowners paying $380, including labor.

Fixed or Picture

The overall price of a fixed or picture window can vary depending on the size. The price range can go from $165 to $1,000, with the average price at $580, including labor. These types of double-pane windows are made from a large pane of glass, typically rectangular in shape. They are an excellent choice for homeowners who want a lot of natural light to flood into a room. Custom sizes and shapes can drive up the price for a double-pane fixed or picture window.

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Benefits of Double-Pane Windows

Double-pane windows provide many advantages in both cold and warm climates. They can add to a home’s value, increase energy efficiency, and save the homeowner money over time. According to the U.S. Department of Energy, energy loss due to inefficient windows adds up to 25 percent to 30 percent of annual heating and cooling costs for the average home. To lower heating and cooling bills, it’s recommended that homeowners install more energy-efficient double-pane windows. Some benefits of having double-pane windows in the home are described below.

Increased Insulation

New double-pane windows can help insulate a home and keep it comfortable year-round. When the indoor temperature remains stable and doesn’t fluctuate, the heating and cooling system will not have to work as hard to maintain a constant temperature. Loose-fitting and leaky windows can let cold air come through in the winter and allow air-conditioned air to seep out when it’s needed most in the summer.

Reduced Outdoor Sound Infiltration

Older windows with loose panes of glass can transfer the sound vibrations of traffic, emergency sirens, conversations, children playing, construction, and car horns to the inside of the home. Energy-efficient double-pane windows can provide sound insulation and absorption to reduce the noise pollution that comes inside. By decreasing unwanted noise that can affect sleep, mood, energy levels, and productivity, double-pane windows can lead to improved health.

Improved Energy Efficiency

While double-pane windows cost more up front than single-pane windows, they will save money in the long run. When the heating and cooling system doesn’t have to work as hard to keep a consistent indoor temperature, homeowners may see a decrease in energy costs. Homeowners who reduce their energy usage after installing double-pane windows can save up to 30 percent, according to the Department of Energy. Double-pane windows are an investment that will last for years to come.

Lower Condensation

When moisture collects on a single-pane window, it means there is no longer a tight seal and that moisture and air can seep through the gaps. Condensation on the surface of the windowpane or between panes is a red flag that it’s time for a new window. Well-sealed, energy-efficient double-pane windows can reduce the amount of condensation on windows.

Consistent Temperature

The inside temperature will remain more consistent when there is less chance of outside air coming inside the home. With their excellent insulation, double-pane windows help stabilize the indoor temperature and allow the heating and cooling system to run efficiently. This will reduce energy usage, increase energy efficiency, and save money on energy costs.

Increased Home Value

When the time comes to sell a home, double-pane windows are an enticing feature for potential buyers. The added benefits of reduced energy usage and lower heating and cooling bills increase the overall value of the home. Environmentally conscious home buyers (or those who don’t want expensive electric bills) will appreciate the installation of double-pane windows throughout the home.

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Double-Pane Window Installation: DIY vs. Hiring a Professional 

After realizing how much double-pane windows cost, homeowners typically look for ways to save money on window installation. While it may be tempting for a homeowner to buy windows from a local home improvement store, the extensive variety of windows available to a professional window installation company at wholesale costs is not accessible to the average homeowner. The equipment and tools needed to install or replace windows can also cost a considerable amount of money. While installing windows on their own can save the homeowner in labor costs, the price of tools and equipment may outweigh any potential savings.

Since it’s often difficult to determine exactly what the inside of the wall will look like before the window is removed, even seasoned window professionals will run into unexpected problems. If there are issues with mold, mildew, termites, decay, or structural damage, a professional will know how to navigate the problems due to their expertise and experience. Industry professionals can also install or replace windows quickly and more efficiently than an inexperienced homeowner. Leaving the heavy lifting to experienced window professionals is recommended to ensure the energy efficiency of double-pane windows. Keep in mind that guarantees and warranties are typically voided by the window manufacturer if the windows are not installed by an industry professional. Incorrect installation will affect the performance, appearance, and effectiveness of the windows and may result in expensive double-pane window repair.

If a homeowner is interested in taking on some of the project responsibilities, they can talk with a window installation professional and see if they’re OK with splitting some of the work. Homeowners should be aware that many window contractors will not allow them to help with the installation project and will not provide warranties or guarantee their work if they split job tasks. A professional will also be familiar with local building codes and know how to work with historical societies for window replacement in a historic or landmark home. The average homeowner is likely not familiar with modern building codes required for window installation projects. Overall, it’s unlikely homeowners will save money on installing or replacing the windows on their own unless they have extensive professional experience.

How to Save Money on Double-Pane Windows Cost

Budgeting for double-pane window costs can be intimidating, and the additional costs associated with the project can quickly add up. Choosing the cheapest windows is one way for homeowners to save money, but there are other ways to save without compromising on quality or features.

• Get multiple estimates. Get at least three estimates from reputable window professionals in the area.

• Plan for the offseason. Window companies are typically busy during the spring and fall. Opt for window installation or replacement during the summer or winter, when window companies may offer incentives and promotions.

• Ask questions. Before deciding on specific window types, ask a professional what would work best in the space and for the function of the room to ensure the best window type is installed.

• Avoid the extras. The pricey add-ons that window companies offer may drive up the overall cost of the project. Stick with what’s needed to avoid extra costs.

• Negotiate for a lower price. The best window replacement companies allow for some wiggle room with window prices. Negotiation is expected, and many companies will discuss reduced prices.

• Use standard sizes. Unless the window that needs to be replaced is an unusual size or shape, use standard window sizes to avoid additional costs.

• Replace more windows. While it sounds contradictory, buying more windows can help homeowners save money. Window companies typically charge less per window when they’re bought and installed in bulk. Replacing all the leaky windows in the house at once will also ensure energy cost savings.

Questions to Ask About Double-Pane Window Installation

When preparing for window installation, homeowners may have questions. Asking the right questions about double-pane window cost can help homeowners minimize miscommunication and find the right professional for the project. Here are some questions to ask a window professional before beginning.

• Do you provide free estimates?

• Can I get a detailed quote?

• How long has your company been in business?

• What certifications do you have?

• Will you provide referrals?

• Are you licensed and insured?

• How much do new windows cost?

• What type of windows do you recommend for my home?

• Will you obtain the building permits?

• How long will the project take?

• Will bad weather delay the project?

• Who will install the windows?

• What are your payment terms?

• Do you offer discounts for paying in cash?

• What warranties do you offer?

FAQs

For homeowners who are unsure about the cost of double-pane windows and window installation, here are some frequently asked questions about double-pane windows to help guide their decisions.

Q. Are dual-pane windows worth it?

Double-pane windows are unquestionably worth the investment. They can lower heating and cooling costs, make the temperature inside the home more consistent, reduce outside noise pollution, and increase the home’s value.

Q.Do double-pane windows have gas in them?

Double-pane windows typically have argon or krypton gas in between the layers of glass to improve the energy efficiency of the windows.

Q. How much do double-pane windows reduce noise?

Double-pane windows can reduce outside noise pollution by 38 percent to 43 percent.

Q. How often should windows be replaced in a home?

Depending on maintenance, weather conditions, and material, windows can last between 15 and 30 years. If a homeowner notices that windows are damaged, don’t open or close easily, are loose within the frame, or are rotten, it’s time to replace them.

Q. How much more efficient are double-pane windows?

Compared to single-pane windows, double-pane windows can reduce energy usage by 24 percent during the cold winter months and by 18 percent during the summer.

Q. Do double-pane windows insulate better?

Double-pane windows insulate better than single-pane windows against extreme temperatures and outside noise pollution.

Sources: Angi, HomeAdvisor (1 and 2), Fixr, Forbes, Energy.gov, Bell Bros, Window and Door Showplace