How much do triple-pane windows cost to install or replace?
Ashburn, VA

How much do triple-pane windows cost to install or replace?

Ashburn, VA

How much do triple-pane windows cost to install or replace?

$450 – $3,000cost per window installed
$6,750 – $60,000average cost for whole house (15 – 20 windows)

Get free estimates for your project or view our cost guide below:

$450 – $3,000 cost per window installed

$6,750 – $60,000 average cost for whole house (15 – 20 windows)

Get free estimates for your project or view our cost guide below:
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Tamatha Hazen
Written by
Tamatha Hazen
Edited by
Kristen Cramer
Fact-checked by
Tom Grupa

Average triple-pane window cost

Triple-pane windows cost $450 to $3,000 per window installed. The cost of triple-pane windows includes $350 to $2,200 per window for the unit plus $100 to $800 per window for installation labor. Triple-glazed windows are more energy-efficient but more expensive than standard double-glazed windows.

Triple-pane window installation costs
Number of windows Average total installed cost
1 $450 – $3,000
2 $900 – $6,000
5 $2,250 – $15,000
10 $4,500 – $30,000
15 $6,750 – $45,000
20 $9,000 – $60,000
25 $11,250 – $75,000
30 $13,500 – $90,000

Cost data is from research and project costs reported by HomeGuide members.

In comparison, the average window replacement cost is $400 to $2,000 per window for standard windows with double-pane glass.

Get free estimates from window installers near you.

Triple-pane window price by type

Triple-pane windows are manufactured in the same styles as double-pane windows, but the additional pane of glass increases the unit price. The extra glass and filler also increase the weight of the windows, making them more costly to install than double-pane windows.

Triple-pane window price by type
Window type Average installed cost per window Description
Awning $1,000 – $1,200 Hinged on the top and cranks open from the bottom
Bay window cost $2,000 – $6,000 Group of 3 windows angled to extend outside the house wall
Bow $3,500 – $9,000 Arc-shaped window made by grouping 4 or more windows together
Casement window cost $400 – $1,500 Hinged on the sides and cranks to open outward
Double-hung $450 – $3,000 Two operating sashes that slide up or down
Single-hung $350 – $2,000 One operating sash that can be raised and lowered
Fixed / Picture window cost $450 – $1,500 Stationary picture window that does not open
Slider $440 – $2,800 Opens horizontally along a top and bottom track, with one fixed panel and one operable side
Hurricane window cost $400 – $1,200 Features a heavy-duty frame with impact-resistant glass designed to withstand a Category 5 storm

A modern dining room with new triple-pane windows.
A modern dining room with new triple-pane windows.

Triple-pane vs. double-pane windows

Triple-pane windows have three panes of glass, while double-pane windows have two panes. Triple-glazed windows are more expensive, energy efficient, reduce noise better, and have a longer lifespan. Double-pane windows cost $400 to $2,000 per window installed.

Triple-pane vs. double-pane window comparison
Factor Triple-pane Double-pane
Cost (per window installed) $450 – $3,000 $400 – $2,000
Energy efficiency 50% energy savings over single-pane 30% savings over single-pane
Lifespan 20 to 30+ years 15 to 20 years
Insulation R-value 3 – 3.8 7 – 8
Safety Stronger Strong
Noise reduction 50% noise reduction over single-pane 30% noise reduction over single-pane

Cost factors for triple-pane windows installation

A triple-pane window costs $350 to $2,200 for the window alone, making up about 70% to 75% of the total project cost.

Triple-pane window cost calculator
Factor Average cost per window
Materials $350 – $2,200
Labor $100 – $800
Total installed cost $450 – $3,000

Other factors that affect the cost include:

  • Window size – Triple-pane glass weighs 25% to 50% more than double-pane glass, which often increases the number of installers needed, especially when installing bigger windows.

  • Window location – High windows that require scaffolding and windows blocked by kitchen or bath fixtures take longer and cost more to install.

  • Window type – Bow windows have 4 or more panels of glass, making them the most expensive to buy and install. Smaller windows are cheaper to buy and easier to install.

Labor cost to install triple-pane windows

Labor costs to install triple-pane windows run from $100 to $800 per window or around $50 per hour per installer, with more installers needed to install the heavier glass. Window replacement may also incur additional costs, including:

Cost of triple-pane windows by material

Wood and fiberglass window frames cost more than cheaper vinyl and aluminum frames. However, wood and fiberglass offer more customization options.

Triple-pane window costs by material
Window material Average installed cost per window Pros Cons
Aluminum $250 – $850
  • Affordable
  • Durable and strong
  • Tends to corrode
  • Not good for coastal areas
Fiberglass $550 – $2,100
  • Durable
  • Wide range of colors and styles
  • Can mimic wood at a lower price point
  • Rigid material is more difficult to install
  • Not recommended for DIY installations
Steel $500 – $5,500
  • Strong
  • Rust-resistant
  • Low-maintenance
  • Expensive
  • Heavy material
Vinyl $250 – $1,500
  • Low-cost
  • Low-maintenance
  • Energy efficient
  • Easy to install
  • Not an environmentally friendly material
  • Limited styles and colors
Wood $350 – $3,000
  • Beautiful
  • Traditional look
  • Good insulator
  • Long-lasting
  • Expensive
  • Needs paint
  • Attracts pests

Cross-section view of triple-pane windows.
Cross-section view of triple-pane windows.

Triple-pane window add-ons and upgrades

Adding upgrades like window coatings and tinting will make the triple-pane windows even more energy-efficient but also more expensive. Some common window add-ons and upgrades include:

Triple-pane window manufacturers

Most well-known window companies make energy-efficient, triple-pane windows, including the popular Andersen, Marvin, and Pella brands. Costs vary by manufacturer, material, and window style.

Get free estimates from window installers near you.
Triple-pane window costs by manufacturer
Window brand Average installed price per window Details
Andersen windows cost $400 – $4,000 Manufactures mostly Fibrex wood composite, but also wood, vinyl, aluminum, and fiberglass windows
Marvin windows cost $800 – $2,000 Manufactures mostly Ultrex high-density fiberglass, but also sell wood, and aluminum window
Pella windows cost $300 – $3,500 Manufactures mostly all-vinyl windows with limited wood and fiberglass available
JELD-WEN $300 – $2,500 Manufactures several lines of wood and wood-clad windows, as well as vinyl, composite, and hybrid windows
Milgard $300 – $2,000 Manufactures mostly vinyl windows, with fiberglass and aluminum lines available

Triple pane windows FAQs

What are triple-pane windows?

A triple-pane window has three panes of glass with space in between for improved insulation. To check if a window is triple-pane, look at the window edge and check for two spacers between the glass panels or shine a light through the window and look for three distinct reflections.

Are triple-pane windows worth it?

Triple-pane windows are expensive but worth it if you live in a cold climate with high heating bills. Triple-pane windows reduce energy bills, reduce noise, and increase your home's value. They also last longer than double-pane windows, which makes them worth the higher price if your budget allows.

How long do triple-pane windows last?

Triple-pane windows last 20 to 30 years, which is longer than double-pane windows which last 15 to 20 years. Cold climates may cause the seals to break down and the gas to leak out, so maintenance is required in cold areas to prolong the windows' life.

Do triple-pane windows reduce noise?

Triple-pane windows reduce noise levels by up to 50%, while double-pane windows lower noise levels by around 30%.

When should I install new windows?

You should install new windows when your existing windows are old or inefficient. Windows typically last 15 to 20 years but even if your windows aren't that old, they could be costing you money every month in high utility bills.

Getting estimates for triple-pane windows installation

Follow these suggestions to help you choose the best window installer near you:

  • Select from only licensed, bonded, and insured window installers.

  • Get several estimates for windows of the same material for comparison.

  • Avoid the lowest estimates that may indicate poor workmanship.

  • Read reviews from past customers on HomeGuide and Google.

  • Request a written contract, payment terms, and warranty details before the project begins.

  • Negotiate a payment plan with a reasonable deposit and the final payment due when the work is done.

Questions to ask

Be sure to ask these important questions when choosing a window installer:

  • How many years of window installation experience do you have?

  • What brand and style of triple-pane windows do you recommend for my home?

  • How much will the new windows cost?

  • What is included in the estimate?

  • How long will it take to install the new windows?

  • What happens if the surrounding surfaces are damaged during installation?

  • What extended financing do you offer?

  • What does the warranty include, and how long is it?