How much do double-pane windows cost?
$400 – $2,000 cost per window installed
$6,000 – $40,000 average cost for a whole house (15 – 20 windows)
Cost to install or replace double-pane windows
Double-pane windows cost $400 to $2,000 per window installed, depending on the window style, size, and material. The cost of double-pane windows for a whole house is $6,000 to $40,000 for 15 to 20 windows with installation. The dual-glazed window units alone cost $300 to $1,500 each.
|Number of windows||Average total cost|
|1||$400 – $2,000|
|2||$800 – $4,000|
|5||$2,000 – $10,000|
|10||$4,000 – $20,000|
|15||$6,000 – $30,000|
|20||$8,000 – $40,000|
|25||$10,000 – $50,000|
|30||$12,000 – $60,000|
|35||$14,000 – $70,000|
Double-pane windows are the standard window frames that include two panes of glass, separated by a space filled with air or gas for improved energy efficiency and noise reduction.
Adding a Low-E coating to the dual-glazed windows increases costs but makes the windows even more energy efficient.
Single-pane windows are rarely installed in homes nowadays but are still manufactured for use in garages and sheds.
Average double-pane window replacement cost
The following table shows the average cost to replace an existing window with a double-pane window.
|National Average Cost||$1,200|
|Average Range||$400 to $2,000|
Cost data is from research and project costs reported by HomeGuide members.
Double-pane window replacement cost by size
Double-pane window replacement costs $300 to $700 for a small window and up to $6,000 for a large window. The most common window sizes are between 24" and 48" wide and 36" and 72" tall, but sizes vary depending on the window type.
|Window size||Average installed cost per window|
|Small||$300 – $700|
|Medium||$400 – $800|
|Large||$650 – $6,000|
Double-pane window prices by style
A double-pane window is an insulated glass unit (IGU) made up of two panes of glass with air or gas between them. Double-pane windows are the industry standard for new windows and are available in all window styles.
|Window type||Average installed cost per window||Description|
|Bay window cost||$2,000 – $6,000||Grouping of 3 windows angled to extend beyond the house wall|
|Bow||$3,000 – $8,000||Grouping of 4 or 5 windows of the same style built together in an arc shape that extends beyond the house wall|
|Casement window cost||$300 – $1,100||Window that is hinged at the sides and opens outward using a crank|
|Double-hung||$400 – $2,000||Window with two operable sashes that slide up or down|
|Single-hung||$300 – $1,500||Window with one sash that can be raised and lowered|
|Picture window cost||$450 – $1,500||A fixed window that does not open|
|Slider||$400 – $2,000||Window that opens horizontally along a top and bottom track, with one fixed panel and one operable side|
|Hurricane window cost||$400 – $1,200||A window with a heavy-duty frame and impact-resistant glass designed to withstand a Category 5 storm|
Dual-pane windows cost by frame material
Dual-pane windows are more expensive than old-fashioned single-pane windows, but the monthly energy savings are worth the added price. One way to save on dual-pane windows is to choose a more affordable window frame material like aluminum or vinyl, rather than costly wood or fiberglass frames.
|Window material||Average installed cost per window|
|Aluminum||$200 – $700|
|Fiberglass||$500 – $1,800|
|Steel||$450 – $5,000|
|Vinyl||$225 – $1,200|
|Wood||$300 – $2,500|
Double-glazed window cost by glass type
Double-glazed windows vary in price depending on the glass type used to improve safety, insulation, or privacy. Low-E glass and insulated windows cost $400 to $3,000 and improve energy efficiency. Laminated and tempered glass offer better safety. Frosted glass offers privacy for use in bathrooms or bedrooms.
|Glass type||Average installed cost per window||Description|
|Frosted||$450 – $1,100||Glass that is treated to create a frosted or etched pattern on one side for privacy in bathrooms or bedrooms|
|Insulated window cost||$400 – $3,000||Made up of two or more panes of glass, separated by an air space, often filled with argon or krypton gas for better energy efficiency, typically used in cold climates|
|Laminated||$600 – $1,600||Two or more layers of glass bonded together with a layer of polyvinyl butyral (PVB) that helps hold glass together if it breaks. Commonly used in car windshields and security windows.|
|Low-E coating||$450 – $2,000||Glass coated with a thin layer of metal oxide to reflect infrared and UV light, popular in areas with extreme climates|
|Tempered||$280 – $1,000||Heat-treated glass that is stronger and more shatter-resistant than ordinary glass for use in shower doors, skylights, and patio doors where safety is a concern|
Double-pane window cost calculator
When calculating the cost of double-pane windows, the window units alone cost $300 to $1,500 on average, depending on the material and gas spacer used. The window price makes up approximately 75% of the total project cost, with labor making up the other 25%.
|Factor||Average cost per window|
|Materials||$300 – $1,500|
|Labor||$100 – $500|
|Total cost installed||$400 – $2,000|
Other factors that affect the total cost include:
Window size – Larger windows cost more and have higher installation costs since they take longer and require additional crew members to install.
Window location – Windows blocked by kitchen or bath fixtures take longer and cost more to install, as do high windows requiring scaffolding to install.
Window type – Bay or bow windows with more panels of glass are the most expensive while sliding windows cost less since they tend to be smaller in size than other windows.
Window frame material – Frames made of wood are more costly than cheaper vinyl materials.
Window glass – Double-panes are the standard window glass option for new construction and window replacement. Triple-pane windows cost more at $450 to $3,000 per window installed but are more energy-efficient. Low-E glass coatings also add to the price.
Labor cost to install double-pane windows
The labor costs to install double-pane windows average $100 to $500 per window or around $50 per hour per installer. Window replacement or installation may also incur these other additional costs:
Drywall repair costs $100 to $400 per hole or crack.
Siding repair costs $200 to $1,100, depending on the extent of the damage.
Painting window trim and frames cost $25 to $150 per window.
Permits cost $50 to $300 for small jobs including window replacement.
Double-pane window prices by brand
Double-pane window prices vary depending on the brand, with each manufacturer offering windows of different materials and features. Feldco and Pella manufacture mostly vinyl windows, Anderson primarily sells their Fibrex wood composite windows, and Marvin makes mostly Ultrex fiberglass windows.
|Window brand||Average material cost (per window)||Average total cost installed (per window)|
|Andersen windows cost||$300 – $3,500||$400 – $4,000|
|Feldco||$200 – $700||$300 – $1,200|
|Marvin windows cost||$700 – $1,500||$800 – $2,000|
|Pella windows cost||$200 – $3,000||$300 – $3,500|
Double-pane window upgrades and add-ons
Upgrades like window coatings and tinting improve the energy efficiency of windows, while add-ons like hurricane shutters and soundproofing improve the home's safety and privacy. Common window upgrades and add-ons may include:
Protection & privacy:
Maintenance & repairs:
Double-pane windows pros and cons
Window replacement costs $400 to $2,000 per window on average, depending on the glass type. Double-paned windows cost $400 to $2,000 but pay for themselves by improving the home's energy efficiency by around 25%.
Double-pane window FAQs
What is a double-pane window?
A double-pane window has two panes of glass separated by an air space that helps insulate the home. The space between the panes is filled with air or inert gas, such as argon or krypton. Double-pane windows are also called dual-pane, dual-glazed, or double-glazed.
Are double-pane windows worth the cost?
Double-pane windows are worth the cost, saving you 25% or more on your heating and cooling bills. The double glass also reduces noise levels and increases your home's resale value.
Many states require double-pane windows in new construction and offer tax rebates for installing double-pane windows in existing homes because they are more environmentally friendly.
How long do double-pane windows last?
Double-pane windows last from 15 to 20 years or more, depending on the quality of the windows, the climate, and how well they are maintained. Double-pane windows can lose their insulation over time due to air or gas leakage and condensation that forms on the inside of the windows.
Can double-pane windows be repaired?
Double-pane windows that have lost their insulation can be repaired by resealing the edges and replacing any gas that has leaked out. If the glass is broken, window glass replacement costs $200 to $600 per double-pane window.
Getting estimates for double-pane window installation
Here are some guidelines to help you choose the best window installer near you:
Select a licensed, bonded, and insured window installer.
Get multiple estimates with the same material product for comparison.
Avoid the lowest estimates that may indicate poor quality workmanship.
Read online reviews from past customers on HomeGuide and Google.
Request a written estimate, contract, and warranty details before the project begins.
Negotiate a payment plan with a small upfront deposit and the final payment due when the work is done.
Questions to ask
To ensure you choose the best installer for your window replacement project, be sure to ask these important questions:
How many years have you been installing windows?
What brands of double-pane windows do you recommend?
How long will the installation take?
Does your estimate include the removal and disposal of my old windows?
Do you protect the surrounding surfaces from damage during installation?
What financing terms do you offer?
How long is the warranty, and what does it include?