The 6 Best Window Installation Companies

Choosing new windows for your home is an important decision that can impact your comfort, energy efficiency, and curb appeal. With so many window types and installation options available, it’s crucial to find an experienced company you can trust. We researched dozens of window installation companies across the country to determine the top choices based on reputation, range of services, warranties, and more. Here are the 6 best window installation companies for beautiful, long-lasting window replacements.

Overview of the Top 6 Window Installation Companies

When researching window installation companies, key factors we considered included:

Experience: Seasoned companies with years or decades of experience receive preference. Companies with proven track records produce higher quality installations.
Range of services: Companies that offer a full range of window services, from installation to replacement and custom options, provide convenience and expertise.
Warranties: Strong product and installation warranties provide peace of mind. Labor warranties that cover caulking, hardware adjustments, and other post-installation needs are ideal.
Reputation: Companies with outstanding reputations, based on customer reviews, receive top marks. Excellent communication and professionalism is crucial.
Pricing/value: Quality window products and experienced installation should fit into diverse budgets. Companies that provide good value relative to cost rank higher.

Based on these criteria, we recommend the following six window installation companies for whole-home window replacements as well as custom and specialty window projects.

1. Window World

With an A+ Better Business Bureau rating after over 20 years in business, Window World ranks at the top of our list. They offer a fantastic selection of replacement windows along with a lifetime warranty on materials and craftsmanship. Their extensive experience with installations of all sizes and dedicated focus to windows set them apart.

Services

Window replacement
Bathroom window installation
Custom shapes (arches, circles, curves, etc)
Multi-pane and specialty windows
Full-service installation

Warranties

Lifetime warranty on materials and craftsmanship
Transferable warranty

Website

www.windowworld.com

2. Renewal by Andersen

Renewal by Andersen is one of the most recognizable and trusted window replacement companies with over 115 years of experience. Their “Forever Warranty” covers not just parts, but labor as well — including any post-installation adjustments that may be needed. Their window options combine beauty, durability and high energy efficiency.

Services

Window & door replacement
Fibrex composite windows
Custom window designs & shapes
Energy efficient & noise reducing windows
Full-service installation

Warranties

Limited lifetime warranty on materials
20-year comprehensive installation warranty

Website

www.renewalbyandersen.com

3. Pella Windows & Doors

Providing premium window options since 1925, Pella delivers exceptional craftsmanship and lasting performance backed by industry-leading warranties. Their Impervia line incorporates advanced glass technology for unparalleled strength, durability and energy savings. Expert installers work quickly and neatly.

Services

New window installation
Wood, fiberglass, vinyl windows
Impervia super-strength line
Custom shapes (arches, curves, specialty windows)
Door installation & storm door services

Warranties

Limited lifetime warranty
10-year installation warranty

Website

www.pella.com

4. Milgard Windows & Doors

This industry leader serves customers in the Western U.S. with high quality fiberglass and vinyl windows. Milgard offers impressive energy efficiency along with custom shapes and sizes. Their Positive Action Lifetime Warranty even covers labor for the life of the home. Reliable services and durable products make Milgard a top choice.

Services

Window & door replacement
Custom windows & shapes
4 window frame materials
Energy Star certified options
Full-service installation

Warranties

Full lifetime warranty on materials & labor
Lifetime glass breakage warranty

Website

www.milgard.com

5. Polar Windows

Focusing specifically on vinyl replacement windows, Polar Windows manufactures and installs affordable products that rival premium brands in performance, quality and appearance. Their Lifetime Window Guarantee is one of the strongest in the industry. Flexible financing options are available.

Services

Vinyl window replacement
Double hung, sliding & specialty windows
Custom sizes & shapes
Lifetime warranty
Professional installation

Warranties

Lifetime guarantee on vinyl products
Transferable lifetime warranty

Website

www.polarwindows.com

6. Window Nation

With a streamlined process that eliminates sales commissions, Window Nation offers exceptional value on quality window installations. Low prices are backed by a lifetime warranty on materials as well as a 10-year installation warranty. Their excellent customer service and transparent process earn rave reviews.

Services

Window & door replacement
Vinyl, wood & composite options
Custom sizes & shapes
Energy efficient models
Professional full-service installation

Warranties

Lifetime warranty on materials
10-year installation warranty

Website

www.windownation.com

Using this list of the top window installation companies in the industry, you can make an informed decision on selecting the best option for your replacement window project based on your specific needs, budget and location.

What to Look for in a Window Installation Company

Installing new windows requires an experienced company you can trust to get the job done right. But with so many options, it can be challenging to choose. Here are the most important factors to consider when selecting a window installation company:

Reputation & Reviews

A company’s reputation speaks volumes about the quality you can expect. Check reviews on sites like Google and Yelp to gauge customer satisfaction. Look for companies that respond professionally to any negative reviews. Verify they have an A+ rating with the Better Business Bureau with few unresolved complaints.

Experience

Choose an installer with at least 5 to 10 years of experience replacing windows. They should thoroughly understand how to properly install windows for optimal performance and weatherproofing. Be sure to ask how long the company has been in business.

Qualifications

Look for installers certified by the National Fenestration Rating Council, which indicates expertise in energy efficient windows. Companies affiliated with trusted organizations like the American Window and Door Institute demonstrate commitment to quality work.

Range of Services

Select a company that can handle all aspects of the window installation process, including removal of old windows, disposal, new window products, custom options, weatherproofing, and top-notch installation services.

Warranties

A strong warranty on window products and installation provides peace of mind. Be sure labor is included for adjusting, repairing or replacing defective components. The longer the coverage the better.

Insurance & Licensing

Only work with properly licensed, bonded and insured window installers to protect your home and avoid liability. Make sure the company can provide current documentation.

Pricing & Financing

Get quotes from at least three window companies to compare pricing. Beware extraordinarily low bids, which may indicate shoddy workmanship. Choose the best combination of value and quality. Ask about financing options if needed.

Customer Service

From your initial inquiry to post-installation support, excellent customer service is a must. Clear communication and professionalism ensure an ideal experience.

Window Installation Process: What to Expect

Once you’ve chosen the right window installation company, it’s helpful to understand the typical process involved for replacing your home’s windows.

Initial Consultation

Scheduling an in-home measurement and consultation allows the company to evaluate your existing windows, discuss needs and preferences, take precise measurements, and provide an accurate quote. Be sure to get estimates from multiple installers before deciding.

Window Order Placed

After you authorize the project, the company orders any custom windows specifically sized and built for your home. Manufacturing custom windows takes some time, so place your order several weeks in advance of the desired installation date.

Installation Date Scheduled

The company schedules an installation date based on window delivery, your availability, and crew workloads. For whole home window replacement projects, the work may take several days to complete.

Prepping the Work Area

On installation day, the crew takes steps to protect your interiors, including putting down drop cloths. They remove window treatments, furniture or anything else obstructing access.

Removing the Old Windows

The installers begin by safely removing existing windows and disposing of them properly offsite. This includes detaching any hardware and taking out the entire old window frame.

Insulating the Window Openings

Crews make sure window openings are properly insulated before installing the new units. This helps seal gaps and improves energy efficiency. Additional wall insulation may be added.

Installing the New Windows

New windows are put into place squarely and leveled correctly in the openings. The installers shim the units and fasten them securely by screwing directly into the window frame.

Sealing Around the Windows

Installers apply waterproof flashing and premium caulking around the interior and exterior perimeters to seal the new windows from moisture and air leaks. The installation is further weatherproofed.

Finishing Touches

New window treatments and hardware are added to complete the job. The installation crew cleans the area thoroughly before asking you to inspect the finished windows and sign off on the work order.

Post-Installation Follow Up

Many companies schedule follow-up inspections after 1 to 3 months to check window operation and make any needed adjustments under warranty. Reputable installers stand behind their work.

Types of Windows to Consider

When choosing new windows, you’ll have several options to consider. Keep in mind that more energy efficient window types often cost more upfront but can yield significant long term energy savings.

Vinyl

Vinyl is the most popular choice for replacement windows due to its durability, low maintenance, energy efficiency and affordability. Insulated vinyl windows with argon gas provide excellent performance.

Wood

Beautiful and classic, wood windows can be painted or stained to match any interior. However, they require more maintenance than vinyl or fiberglass. Modern treatments help protect against weathering.

Fiberglass

Fiberglass windows offer the aesthetic appeal of wood with superior durability and less maintenance. Stronger than vinyl, fiberglass resists warping, expansion and contraction.

Composite

Made by blending materials like vinyl, wood fiber and resin, composites provide the best qualities of each. Great insulation, strength and appearance result. Composite is used in Andersen’s Fibrex brand.

Aluminum

Sleek aluminum frames allow for narrow, contemporary window designs. But aluminum conducts heat and cold easily, so these windows must have thermal breaks between panes.

Glass Types

Several glass options improve energy efficiency and noise reduction. Look for double or triple paned windows, argon or krypton gas, low-E coatings, and insulating spacers.

Window Frame Materials Comparison

The frame material you choose impacts the performance, durability, appearance and cost of replacement windows. Here’s how the main options compare:

Vinyl is ideal if affordability and low maintenance are priorities. Fiberglass and composite offer the best combination of aesthetics, durability and efficiency. Wood provides unparalleled beauty but requires the most upkeep.

Custom Window Installation Options

Beyond standard rectangular windows, companies offer custom options like:

Arched windows – Perfect for entryways or adding unique flair.
Bay and bow windows – Project outward to provide space and architectural detail.
Circle top windows – Also known as half-round; offer rounded style.
Casement windows – Hinged on the sides and crank open outward.
Double hung windows – Classic style with two sashes that slide up and down.
Skylights – Installed on angled ceilings to let in natural light.
Glass block windows – Made of multiple thick glass blocks for privacy.
Stained glass – Decorative antique or new stained glass panels.
Picture windows – Large fixed windows ideal for framing a view.

Companies can custom build windows to match virtually any shape or size you desire. This allows new windows to fit their openings precisely while supporting architectural themes.

Window Installation Costs

The cost to install replacement windows varies based on:

Window sizes and number of windows being replaced
Window materials and types
Installation complexity for particular windows/home
Geographic region and labor costs
Additional repairs or modifications needed
Overall quality of windows and installation

According to HomeAdvisor, homeowners pay an average of $721 per window for installation of midrange vinyl replacement windows. Here are some typical price ranges:

Single hung vinyl window (3 x 5 foot) – $400 to $700 installed
Casement vinyl window (3 x 5 foot) – $550 to $900 installed
Double hung vinyl window (3 x 5 foot) – $700 to $1,100 installed
Bay or bow vinyl window (10 x 5 foot) – $2,000 to $4,000 installed
Glass block window (2 x 3 foot) – $900 to $1,600 installed
Skylights (2 x 4 foot) – $600 to $2,000 installed
Custom shape vinyl windows – $700 to $1,500 per window installed

Whole home window replacement for 15 standard vinyl windows costs $9,000 to $15,000 on average. Wood, fiberglass or composite windows are two to three times more expensive than vinyl.

Preparing for a Window Replacement Project

Window installation involves some disruption and prep work. Follow these tips to ensure the process goes smoothly:

Declutter windows – Remove window treatments and any furniture blocking access so crews can work efficiently.
Protect valuables – Cover or relocate fragile items, artwork and electronics. Workers will take precautions, but accidents can happen.
Clean window areas – Vacuum and clear windowsills and the surrounding space to avoid dust and dirt during the job.
Arrange for child/pet care – Kids and pets should be kept away from the active work area for safety.
Coordinate parking – Make sure crews have room to park their work vehicles throughout the duration of the project.
Inform neighbors – Let neighbors know about the window work in advance since they may be affected by noise.
Maintain access – Keep walkways and doors clear so crews can enter and exit easily with new windows and materials.
Discuss project specifics – Address any concerns about installation areas, materials, cleanup, or the timeframe with the company upfront.
Remove window treatments – Take down curtains, blinds and hardware before installation so they don’t get damaged.

Proper planning minimizes hassles during window replacement. Discuss any questions or issues with your installation company to ensure you know what to expect.

DIY vs. Hiring a Professional

Is replacing windows a DIY project or best left to the professionals? While a skilled DIYer can handle some window installations, large or complex projects often warrant hiring an experienced company.

Consider hiring a professional window installation company if:

Your home needs a large number of window replacements
Windows are located on upper floors or dangerously high locations
You need specialty windows like bay or garden windows
Your home’s windows have complex designs or shapes
Window openings require structural modifications or repairs
Mold, lead paint or other hazards are present and must be remediated
You want an expert team to handle the heavy lifting and messy removal
You want your project completed quickly and efficiently in 1-3 days
You expect perfect results and want someone else to be liable for any issues
You want top-quality energy efficient windows properly weatherproofed
You prefer not to deal with disposing of old windows and debris

DIY window replacement may make sense if:

You’re swapping out just one or two standard windows on the first floor
You have carpentry skills and home improvement experience
You don’t mind spending weekends tackling a slow, labor-intensive process
You can recruit skilled friends to help with tricky steps
You have the tools, equipment and transportation to remove and dispose of existing windows
You are able to follow complex manufacturer instructions precisely
You can properly weatherproof windows and openings yourself
You understand the liability you assume during the project

For most homeowners, hiring a professional ensure proper installation and peace of mind. But a competent DIYer up for a challenge can take on simpler projects successfully.

Window Installation FAQs

Weatherizing and beautifying your home with energy efficient replacement windows is a big project. Here are answers to some frequently asked questions about the window installation process:

How long does it take to install replacement windows?

The time it takes varies based on the number of windows and complexity, but expect most projects to take 1 to 3 days. A single large specialty window could be installed in a day, while a whole home window renovation with 20+ windows may take 2-3 days.

Should I be home during window installation?

It’s smart to be home during at least part of the installation to inspect progress and address any questions. However, crews work best without homeowner interference, so give them space