Ashburn, VA 20149

Window Installers on Thumbtack cost$300 - $5000

National average price

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  • Most common low price:$300
  • Most common high price:$5000
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How much does a window replacement cost?

The average cost of a window replacement project ranges from $3,500 (for a few windows) to $20,000 (to redo your whole house). We know that's a pretty big range, but bear with us. A variety of factors influence a replacement estimate including the number of windows, the window style and the labor expenses. Let's look at how it all breaks down.

What's in this Cost Guide?

What affects the cost of window installation?

As with any home improvement project, window replacement cost boils down to two things: materials and labor. Some installation companies charge labor fees by the hour, others by the window – about $135 to $145 on average for a single pane window, and $185 to $250 for double pane.

As far as materials go, windows are priced individually so the more you replace, the more you spend. Rather than doing all the windows at once, some homeowners go room by room, completing the project over time. If that sounds like one giant, drawn-out headache to you it's worth asking the installation company if they offer discounts to homeowners who replace all their windows at once.

Windows themselves are priced according to a unit of measurement called the “united inch." (Window width + window height = united inch). The window company you hire will likely send a pro to your house for an in-home consultation. The replacement pro will take the proper measurements, then new windows will be custom made-to-order.

How much do replacement windows cost (and what are my options)?

Beyond united inches, three other factors influence the final price of replacement windows:

  1. The window opening
  2. The window glass
  3. The window frame

The window opening.

The “opening" is how a replacement window operates. Does is slide horizontally on a track? You've got yourself a sliding window. Lift up from the bottom? That's single hung. Here are the most common opening styles, ranked from least to most expensive.

Style

How it operates

Average cost

Single hung window

The least expensive style. Only the bottom half opens, sliding upwards. The other half stays in place.

$150 to $350

Double hung window

The most common window style. Both top and bottom slide open vertically on a double hung window, offering better ventilation than single hung.

$300 to $800

Casement window

Casement windows have side hinges and open outwards from the middle. The casement style allows better airflow and less obstructed views.

$250 to $700

Sliding window

Sliding windows, well… slide open. Horizontally along a track.

$300 to $1,000

Picture window

Picture windows are large panes of glass that don't open at all. They're unobstructed by frames or grids.

$350 to $900

Awning window

Popular in rainy climates, these open outward from the bottom, creating an “awning" that allows you to leave the window open for air flow, even when it's raining.

$450 to $750

Bay window

A classic (and pricey) window style, bay windows extend outward from a structure.

$1,000 to $4,000

The window frame.

The frame you choose is the foundation of your replacement window. When considering which windows to purchase think frame first, then glass. Here are common materials.

Frame material

Pros and cons

Vinyl frame

Not as durable or attractive as wood or aluminum, but vinyl windows are easy to maintain, well insulated and affordable.

Fiberglass frame

A great insulator, fiberglass is strong and energy efficient. It looks similar to vinyl but is much more expensive.

Aluminum frame

Aluminum is modern and very durable. It does conduct heat, though, so it's not an ideal choice for colder climates.

Composite frame

Made with particleboard and other wood products, composite frames are weather resistant, low-maintenance and eco-friendly.

Wood frame

Very durable and energy efficient (and expensive). Wood requires regular painting and upkeep to retain its function and classic look.

The window glass.

There are two main types of glass: single glazed and dual glazed (also called single-pane and double-pane). Triple-pane glass is a thing, but only necessary if you live in a very cold climate. Add-ons and extra coatings can improve the energy efficiency of your glass – but those extras cost you more money. Here are the key terms to know.

 

 

 

Glass

 

Pros and cons

 

Single-pane

 

Like the name says, a single glaze (single-pane) window has just one layer of glass. Provides little to no insulation.

 

Double-pane

 

Dual glazed (double-pane) windows have two layers with an air space in between that acts as an insulation barrier for your home.

 

Low E coating

 

“Low emissivity" is a high-tech glass coating that blocks heat and ultraviolet rays from the sun without blocking natural light.

 

Argon Gas

 

Argon gas is denser than air and has lower thermal conductivity. It improves the performance of double-pane windows. Yay, science.

How do I hire a window installer?

Most homeowners only have to install new windows once in their lifetime. Decisions shouldn't be based on cost alone – the quality of replacement windows you choose is very important. But even more important, is having it installed correctly. A cheaper window installed properly can be much more efficient than a high-end window installed incorrectly.

That's where an installation professional comes in. They have the expertise to guide you through the process of choosing the right windows for your home and make sure the job is done right.

As with any home improvement project, you'll want to interview window installers to explore your options before deciding who to hire. It's good to have a window wishlist in mind when speaking to pros. For example, is window appearance a top priority, or would you sacrifice looks for function? Once you've clarified your wants, the pro can make recommendations to suit your needs.

Your window installer will also provide you with an estimate or proposal for the job. An estimate typically has a single price whereas a proposal gives you multiple options with different brands, prices and services – sort of a “good, better, best" menu of window packages. Your estimate should also include labor fees for removing old windows, installing the new ones, and hauling away old windows and debris.

How can I save money on window installation?

  • Replace multiple windows at the same time. Although the total cost of the project will be higher, the install cost per window will likely be less because the professional can maximize time and labor at one job site. Some pros even offer promotional pricing (5% off your total invoice, for example) for installing multiple windows in one location.

Is window replacement worth all that money?

That's the million dollar question, right? Or in this case, the 10 to 20 thousand dollar question. Everyone knows new windows save you (some) money on energy bills. Upgrading a single-pane house to new double-pane windows improves energy efficiency by about 10%, and those energy savings do add up over time. But that's the problem – it takes time. So you may be thinking, why replace your windows if it's going to take 30 years to get that money back?

Resale value

According to Remodeling Magazine, homeowners can recover about 73% of replacement window costs when selling their home. Most buyers know the hassle and expense that comes with a window replacement project. Your realtor will be able to market new windows as an upgraded feature on your listing. It's certainly a project worth considering, even if you only plan to be in your home for five to seven years. Just be sure you don't overspend on premium windows if your house won't be selling at a premium price point. Mid-range replacement windows will serve you (and your resale value) just fine.

How do we know these prices?

Millions of people ask Thumbtack for help with their projects every year. We track the estimates they get from local professionals, then we share those prices with you.

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