Window replacement generally includes the new window unit, professional installation, weatherproofing, insulation, and the disposal of your old windows. The exact scope depends on whether you choose a simple insert replacement (using the existing frame) or a full-frame replacement (gutting the opening down to the wall studs).
Replacement of the window includes the window sash, the insulation, the weatherstripping, and some exterior capping or cladding.
Replacement windows fit custom-manufactured window units directly into the existing structural frames of your house. Installers remove the old sashes, tracks, and hardware while keeping the main frame and trim intact. The new unit is then inserted, leveled, shimmed, and heavily sealed to improve energy efficiency.
When you choose insert window replacement, new windows are installed within the existing window frame. Also known as “frame-in-frame replacement” or a “pocket window,” it's an option when your existing wood or aluminum window frames are structurally sound and you want to preserve existing interior and exterior trim.
Replacing only the glass is significantly cheaper than replacing the entire window. While you'll still need to pay for the glass and installation, of course, you won't need to buy a new frame.
The cheapest time of year to replace windows is during the off-season, which runs from late fall through winter. Demand drops significantly during these months, prompting manufacturers and contractors to offer steep discounts and special promotions to keep their crews busy.
While old windows might still be functional, there's a good chance they're not very efficient. Windows that are over 20 years old should be replaced. If you've lived in your home for decades and have never replaced the windows, they are likely original to the house.
Ask these key questions to avoid high-pressure sales tactics and ensure you get a quality product.
Home Depot window installation typically costs $350 to $1,500 per window installed, depending on window material, brand, size, and labor costs in your region. Total project costs can range from $3,600 to $15,000 depending on how many windows are replaced.
In many cases, it is cheaper to replace all windows at once. Full-home projects usually qualify for better per-window pricing because of manufacturing efficiencies, a single installation cycle, and lower labor per unit. You also avoid future price increases and start saving on energy bills sooner.
On average, windows last between 15 and 30 years.
Vinyl windows last approximately 20 years, while aluminum and fiberglass windows can reach a lifespan of 30 years. Wood windows have an average lifespan of 20-30 years as they're highly durable, but only if maintained properly.
Generally speaking, it takes approximately 30 minutes to remove an old window and install a new one. With this in mind, calculating how long the entire job will take is relatively easy. So, if you have 10 windows, you should account for roughly 300 minutes, or a five-hour job.
Yes, new windows can save you money on your taxes. While you generally cannot deduct them as standard home repairs, you can claim the Energy Efficient Home Improvement Credit.
3. Can I get a grant to install new windows in my extension? Yes, you can claim a grant for upgrades done on the original part of the house or for any extensions built before 1st January 2011. Extensions built after 1st Jan 2011 are not eligible.
Installing new windows involves precise alignment and sealing to ensure they function correctly and efficiently. This process often requires adjustments and checks from both sides of the wall. Installers need interior access to ensure the window is level and properly insulated.
The best time to replace windows is typically during spring or fall, when temperatures are mild and weather conditions are more predictable. These seasons help ensure proper installation, better sealant performance, and minimal disruption to your home's heating or cooling.
Home Depot window replacement reviews show product quality remains solid while installation experiences vary dramatically. Customer reviews show ratings between 2.5 and 4 out of 5 stars, with most complaints focusing on installer competence and difficulty resolving issues.
Contractor discounts at The Home Depot include Volume Pricing so you can get the job done. To get started with Volume Pricing, create a list of the supplies and materials you need and bring it to the Pro Desk. Our Pro associates will help you get the lowest price possible.
What Are the Most Popular Window Brands?
Estimating Your Project Costs
To plan your window replacement project, multiply the average cost per window by the number of windows in your home. For example: 10 vinyl, double pane windows: 10 × $900 = $9,000. Add-ons like triple pane glass or specialty shapes: +$150–$300 per window.
Choosing between Home Depot and Lowe's for windows comes down to your project type. For simple, off-the-shelf DIY projects, both stores are highly comparable. However, for full-service window replacement with installation, both retailers sub-contract local installers, and prices or service quality can vary significantly.
The International Association of Certified Home Inspectors (InterNACHI) states that aluminum and aluminum-clad windows last from around 15 to 20 years. Fiberglass is another top choice. This durable material typically lasts longer than aluminum, with a 20- to 40-year lifespan, according to InterNACHI.
Andersen® products can be used in any type of project, including new construction, remodel/renovation, and replacement. Renewal by Andersen® products are replacement only. They are specially designed and custom manufactured to fit the existing openings in a home.
Windows generally need replacement if they are over 15–20 years old, have broken seals, or if you feel persistent drafts. Key indicators include fogged glass, decaying frames, difficulty operating the windows, or noticeably high energy bills.