Renewal by Andersen is the best window installation company because of its streamlined service model and strong focus on energy efficiency. Even the highest-quality replacement windows won’t perform as intended if they’re installed incorrectly. Choosing a reputable window installer helps ensure your new windows deliver long-term performance while protecting your manufacturer’s warranty.
To determine our top picks, we evaluated replacement window brands based on product selection, installation services, and value. We also surveyed 1,000 homeowners nationwide to better understand their window replacement experiences and costs. Explore our top picks to find the right window installer for your home.
Key Takeaways
- Renewal by Andersen is our pick for the best window installation company, thanks to its in-house installation process and energy-efficient products.
- Our 2026 windows survey of 1,000 homeowners nationwide found that replacement projects cost an average of $7,183, or $525 per window before installation.
- Homeowners typically spent one to four weeks researching window installers and obtained two or three quotes before choosing a company, according to our survey.
Renewal by Andersen
Buy One Window or Door, Get One 40% Off
Pros and Cons
What We Liked
- Features proprietary window frame material that is stronger and more durable than vinyl
- Includes a transferable 20-year warranty on glass and a 10-year warranty on non-glass materials
- Provides full-service window replacement services
Keep in Mind
- Doesn’t sell aluminum, fiberglass, or wood frame windows
- Provides fewer window styles than other brands
Window Styles Offered
Renewal by Andersen offers up to eight window styles, which you can customize to fit your home’s aesthetic. Here is the full list of window styles Renewal by Andersen offers:
- Specialty
- Awning
- Bay
- Bow
- Casement
- Double-hung
- Picture
- Sliding
What’s the Best Window Installation Company?
Here’s our list of the top window installation companies nationwide:
- Renewal by Andersen: Best Installation
- Champion: Best Financing
- Power Home Remodeling: Best All-in-One Provider
- Castle: Best Warranty
- Milgard: Best Fiberglass Windows
- Marvin: Most Diverse Selection
- Harvey: Best Vinyl Windows
How Do the Top Window Installation Companies Compare?
Use the table below to compare the best window installation companies based on our overall scores, Better Business Bureau (BBB) ratings, pricing, and warranty coverage.
| Company | Star Rating | BBB Rating | Price Range | Warranty |
|---|---|---|---|---|
A+ | $584 | Limited transferable | ||
Not Rated | $559 | Limited lifetime transferable | ||
A+ | $663 | Limited lifetime transferable | ||
 | A+ | $487 | Lifetime transferable | |
 | D | $470 | Full lifetime and limited lifetime |
Our Reviews of the Best Window Installation Companies
Renewal by Andersen
Overview
Renewal by Andersen is known as one of the best window replacement companies in the United States. It offers a full line of replacement windows made from its patented Fibrex composite material. Andersen says this material—made of 60% thermoplastic polymer and 40% reclaimed wood—is twice as strong as vinyl and works in all climates. The company also offers customizable window hardware, colors, and grilles, plus energy-efficient glass.
Renewal by Anderson has a full-service installation process, beginning with a free virtual or in-person consultation. The company handles installation in-house, using its certified team trained to install its products specifically. One of our team members recently joined a Renewal installation crew on a job site to see what window replacement is really like. We found that the installers were prepared, thorough, and respectful of the homeowner’s property.
Pros and Cons
Pros
- Well-recognized brand available in 49 U.S. states
- Warranties cover glass and non-glass items
- Offers a fully in-house installation service, including a free consultation
Cons
- Limited pricing details online
- Only offers one window frame material
Types of Windows Available
Renewal by Anderson sells the following window styles:
- Storm doors
- Awning windows
- Bay windows
- Bow windows
- Casement windows
- Double-hung windows
- Entry doors
- Gliding windows
- Hinged French patio doors
- Pass-through windows
- Picture windows
- Screen doors
- Sliding doors
- Specialty windows
Champion
Overview
Champion Windows offers a variety of sunroom, window, and door installations, as well as the best financing options. The company’s vinyl windows can be customized with exterior colors and wood grain patterns. Its signature Comfort 365 Glass combines a low-emissivity (low-e) coating and argon gas to block 94% of harmful ultraviolet (UV) rays. Champion also offers low-maintenance vinyl siding in various fade-resistant colors.
Champion Windows has an in-house installation process and includes a limited lifetime warranty. The company offers year-round installations, including a unique process guaranteed to reduce your exposure to the elements during winter.
Pros and Cons
Pros
- Offers window, door, and sunroom installations
- Provides custom windows and in-house installations
- Sells ENERGY STAR-certified windows
Cons
- Limits service area to 26 U.S. states
- Only has vinyl window options available
Types of Windows Available
Champion Windows offers the following window, door, and sunroom options:
- All-season sunrooms
- Basement hoppers
- Bay windows
- Bow windows
- Casement windows
- Double-hung windows
- Entry doors
- Garden windows
- Glass block windows
- Patio doors
- Patio enclosures and covers
- Picture windows
- Screen doors
- Screen rooms
- Shaped windows
- Sliding doors
- Storm doors
- Three-season sunrooms
Power Home Remodeling
Overview
Power Home Remodeling is the only installer on our list that doesn’t manufacture its own windows. Instead, the company partners with Pella to offer Power by Pella, an exclusive line of energy-efficient vinyl windows. These windows feature patented Heat Shield glass to help reduce heat transfer and improve year-round energy efficiency. In addition to replacement windows, Power Home Remodeling offers doors, siding, roofing, and insulation services.
Power Home Remodeling uses its own installation crews and backs every project with a lifetime labor warranty. The company also provides ongoing customer support after installation, making it a strong choice for homeowners planning multiple exterior home improvement projects.
Pros and Cons
Pros
- Offers products and services nationwide
- Has energy-efficient window selections
- Sells high-quality vinyl windows made by Pella
Cons
- Does not manufacture its own windows in-house
- Product availability is limited to certain Pella collections
Types of Windows Available
Below are the window styles Power Home Remodeling offers from Pella:
- Awning windows
- Bay windows
- Bow windows
- Casement windows
- Custom options
- Double-hung windows
- Front doors
- Patio doors
- Picture windows
- Single-hung windows
- Sliding window
- Specialty windows
Castle
Overview
Castle Windows is a family-owned manufacturer that specializes in custom replacement windows with durable vinyl frames. Its window selection includes double-hung, sliding, casement, bay, and bow styles, all designed for energy efficiency and low maintenance. In addition to windows, Castle also offers entry doors, roofing, and vinyl siding.
Castle handles every installation with its own in-house crews rather than subcontractors, helping ensure consistent quality from consultation through installation. All replacement windows are backed by a transferable limited lifetime warranty, making Castle a solid option for homeowners looking for long-term protection and personalized service.
Pros and Cons
Pros
- Additional roofing services offered
- Customizable vinyl window options
- Offers doors and siding products
Cons
- Offers limited product details online
- Has a limited service area available in only 11 U.S. states
Types of Windows Available
Castle Windows provides these window and door styles:
- Awning windows
- Basement hoppers
- Bay windows
- Bow windows
- Casement windows
- Deadlite windows
- Double-hung windows
- Exterior doors
- Garden windows
- Patio sliders
- Slider windows
- Specialty windows
- Transom windows
Milgard
Overview
Milgard offers a wide selection of replacement windows and patio doors in aluminum, fiberglass, and vinyl. Homeowners can choose from popular styles such as single-hung, casement, sliding, and picture windows, along with energy-efficient upgrades like double- and triple-pane glass. Milgard’s fiberglass windows resist warping and swelling, while its vinyl and aluminum options provide durable, low-maintenance solutions for a variety of climates and budgets.
Milgard sells its products through a network of certified dealers, who handle the entire replacement process from measuring and removing old windows to professional installation. Warranty coverage varies by product line, with many windows backed by a limited lifetime warranty for residential homeowners.
Pros and Cons
Pros
- Offers aluminum, fiberglass, and vinyl window options
- Has more than 90 years of industry experience
- Provides full and lifetime warranty coverage
Cons
- Coverage area includes only 16 U.S. states
- Pricing information varies by location
Types of Windows Available
Below is a list of Milgard’s window and door offerings:
- Awning windows
- Bay windows
- Bi-fold glass walls
- Bow windows
- Casement windows
- Double-hung windows
- French-style sliding doors
- Garden windows
- Horizontal slider windows
- In-swing French doors
- Out-swing French doors
- Picture windows
- Pocket glass walls
- Radius windows
- Single-hung windows
- Sliding patio doors
- Stacking glass walls
Marvin
Overview
Marvin Windows is best known for its premium fiberglass windows, but the company also manufactures high-quality wood and aluminum-clad wood products. Its product lineup includes awning, casement, double-hung, picture, and specialty shape windows, along with skylights, patio doors, and storm windows. Many Marvin windows are available with customizable finishes and energy-efficient glass packages.
Marvin products are sold through a network of independent dealers, who provide professional installation for new construction and replacement projects. The company backs its windows with product warranties that vary by collection, making Marvin a strong choice for homeowners seeking premium materials and extensive design options.
Pros and Cons
Pros
- Sells ENERGY STAR-certified windows
- Product catalog includes aluminum, fiberglass, and wood windows
- Offers products nationwide
Cons
- Installation availability varies by ZIP code
- May charge higher pricing than some other brands
Types of Windows Available
Marvin Windows offers a large selection of windows and doors including the following options:
- Swinging doors
- Bay windows
- Bi-fold doors
- Bow windows
- Casement windows
- Corner windows
- Double-hung windows
- Entry doors
- Garage doors
- Interior doors
- Lift and slide doors
- Multi-slide doors
- Picture windows
- Pivot doors
- Skylights
- Specialty windows
- Sliding windows
- Sliding doors
- Storm windows
Harvey
Overview
Harvey Windows offers several wood and vinyl window collections designed to balance durability, energy efficiency, and curb appeal. Its product lineup includes popular styles such as double-hung, casement, awning, and picture windows, and entry and patio doors. You can customize their windows with ENERGY STAR-certified glass, decorative grids, hardware finishes, screens, and a variety of colors.
Harvey sells its products through a network of authorized distributors and dealers rather than directly to homeowners. These local partners connect customers with trained installers who are familiar with Harvey’s products and installation requirements, helping ensure a professional fit and finish.
Pros and Cons
Pros
- Has energy efficiency options, including multiple panes and low-e glass
- Offers a wide variety of customization options
- Sells wood and vinyl windows and doors
Cons
- Has a limited state availability
- Wood windows have a shorter 10-year warranty
Types of Windows Available
Here are Harvey’s available window and door styles:
- Rolling windows
- Awning windows
- Bay windows
- Bow windows
- Casement windows
- Custom shaped windows
- Double-hung windows
- Entry doors
- Garden windows
- Gliding patio doors
- Gliding windows
- Hoppers
- Majesty hinged patio doors
- Picture windows
- Single-hung windows
How Much Does Window Installation Cost?
The cost of window installation depends on the number of windows you’re replacing, local labor rates, and the window brand, frame material, and glass package. To help homeowners better understand what to expect when replacing windows, we surveyed 1,000 recent customers nationwide about what they paid for their home improvement projects. Respondents spent an average of $7,183 per project, or $525 per window before installation, with most replacing seven windows.
Window Style
Window style plays a role in both material and installation costs. Simpler styles, like single-hung and sliding windows, are generally more affordable than larger or more specialized options, like bay and hurricane windows. The table below highlights the most common window types along with the average per-window costs as reported in our 2026 homeowner survey.
| Window Type | Average Cost Per Window |
|---|---|
|
Awning |
$545 |
|
Bay |
$550 |
|
Casement |
$529 |
|
Double-hung |
$551 |
|
Picture |
$540 |
|
Single-hung |
$474 |
|
Sliding |
$531 |
Note: Costs are based on responses to our 2026 survey of 1,000 homeowners nationwide and reflect average window costs before installation. Actual costs may vary based on window size, frame material, glass package, manufacturer, and location.
Window Frame Material
Your chosen frame material also affects your overall cost, though price differences are often smaller than homeowners expect. Vinyl is typically the most affordable option, while fiberglass and wood frames tend to cost more because of their durability, energy efficiency, and appearance.
| Frame Material | Average Cost Per Window |
|---|---|
|
Aluminum |
$453 |
|
Composite |
$513 |
|
Fiberglass |
$564 |
|
Vinyl |
$472 |
|
Wood |
$544 |
Window Glass Packages and Upgrades
Glass options are another major cost factor when buying new windows. Our 2026 survey found that 73% of homeowners chose double-pane windows, which ranked as the most common glass option. Investing in upgrades like triple-pane glass, low-emissivity (low-E) coatings, impact-resistant glass, and decorative or privacy glass generally increase upfront costs but can improve a window’s energy efficiency, comfort, and durability.
What To Consider When Choosing a Window Installer
The best window installer isn’t always the cheapest option. We put together a list of factors to consider to help you compare companies and choose the right fit for your project.
Some window installers manufacture their own windows, while others sell products from one or more third-party brands. Manufacturer-direct companies often offer exclusive product lines and more customization, while multi-brand dealers provide a broader range of styles, frame materials, and price points. Before choosing an installer, make sure it offers the window styles, energy-efficient glass, and customization options that fit your home.
Not every company installs windows the same way. Some use in-house crews, while others rely on certified dealers or subcontractors. Ask who will complete the installation and what’s included in the service, like measurements, removal of old windows, cleanup, and final inspections. Understanding the installation process upfront can help you compare companies beyond price.
Customer reviews can reveal details you won’t find in a sales presentation. Look for consistent feedback about communication, scheduling, installation quality, and how the company handles warranty claims or service requests. Reviews from homeowners in your area can also provide insight into the installer’s reliability and workmanship.
Choose a company that is properly licensed and insured to operate in your state. If you’re purchasing windows from a specific manufacturer, ask whether the installer is part of its certified dealer network. Manufacturer certifications show the installer has been trained to install those products according to the company’s standards.
Window warranties vary by installer. Some companies offer separate product and labor warranties, while others combine both into a single plan. Compare coverage length, transferability, and exclusions before signing a contract. A strong warranty can provide added peace of mind long after the installation is complete.
Homeowner Insights
Homeowners in our survey rarely hired the first company they contacted. In fact, 68% of respondents spent one to four weeks researching window companies before making a decision. Most homeowners also compared two (44%) or three (34%) quotes before choosing an installer.
What To Expect During a Window Installation
Replacing your windows can feel like a major project, but knowing what to expect can make the process easier. Our survey asked recent window customers how long installations took, how they chose an installer, and what they learned along the way. Here’s what respondents had to say.
Most Installations Take Two to Three Days
Most homeowners completed their window replacement in two to three days, while nearly one-third finished in a day or less. Larger projects or custom windows may require additional time, but installations lasting more than five days were uncommon.
Final Costs Don’t Always Match Initial Quotes
Although most homeowners said their final project cost matched the original estimate, about 1 in 4 respondents paid more than expected. Asking for a detailed written estimate and discussing any potential add-on costs before work begins can help you avoid unexpected expenses.
Homeowners Recommend Doing Your Research
When asked what they wished they’d known beforehand, homeowners most often pointed to the total project cost, the number of window options available, and the installation process itself. Many also recommended comparing multiple quotes, reading customer reviews, and reviewing warranty coverage before choosing an installer.
How Do I Find a Window Installer Near Me?
Most of the companies in our review provide installation services nationwide, which offers a good starting point for your window replacement project. These companies either have an in-house team of installers or a local network of contractors trained to handle their products. However, some brands have varied availability in different regions or only sell products in certain states.
You can also use the tool below to find window installers that serve your ZIP code and get price estimates.
Get Estimates from Window Experts in Your Area
Compare quotes from local pros
Is Hiring a Professional Window Installer Worth It?
For most homeowners, hiring a professional window installer is worth the investment. An experienced installer can help ensure your windows are measured accurately, installed according to manufacturer specifications, and backed by applicable warranty coverage.
In our survey, 94% of respondents said they were satisfied with their replacement windows, and 92% said they would recommend their window company to others. Taking the time to compare installers, products, warranties, and pricing can help you choose a company that delivers lasting value and peace of mind.
FAQs About Window Installation Companies
How do I choose the best window installation company?
Start by comparing each company’s product selection, installation process, warranty coverage, customer reviews, and pricing. We also recommend requesting at least three quotes and confirming whether the company uses in-house installers or certified local contractors.
How much does professional window installation cost?
In our 2026 homeowner survey, respondents spent an average of $7,183 per project and $525 per window before installation, with most replacing seven windows. Costs vary based on the number of windows you’re replacing, the window style, frame material, glass package, and labor rates in your area.
What should I expect during the estimate process?
Most window installation companies offer free estimates. During the consultation, a representative will inspect your existing windows, take measurements, discuss product options, explain warranty coverage, and provide a written quote. Some companies also offer virtual consultations or showroom appointments.
Do window installation companies use their own installers?
It depends on the company. Some window installers use their own in-house employees, while others work with certified local dealers or independent contractors trained to install their products. Before signing a contract, ask who will complete your installation, whether they’re certified for your chosen window brand, and what workmanship warranty is included.
Our Rating Methodology
The This Old House Team backs up our window ratings and recommendations with a detailed rating methodology to objectively score each provider. Our research includes speaking with company representatives, browsing product selections, analyzing window line specifications, and conducting homeowner surveys.
We then score each provider against our review standards for window variety and features, installation quality, trustworthiness and transparency, cost, warranty coverage, and customer service to arrive at a final score on a 5-star rating scale.
- Window options (30 points): The more window types a company offers, the higher it scores. We also check to see if the company has multiple windows lines, including options focused on affordability as well as luxury and architectural styles.
- Installation (15 points): We consider each provider’s installation process, including whether it offers in-home consultations, customization options, or other services like roofing. We also see if the provider is available at major retailers, like The Home Depot or Lowe’s.
- Reputation and trustworthiness (15 points): We evaluate each company’s Better Business Bureau (BBB), Trustpilot, and Google ratings. We analyze the most recent reviews for each company to get an idea of how homeowners feel about its products and services. Companies with higher customer review scores receive more points.
- Window features (10 points): We consider which features a company offers with its windows, like low-e coatings, tilt-in sashes, and customization. The more features, the higher the score.
- Pricing (10 points): We consider each provider’s average cost and if that range is accessible for most homeowners. Providers with lower prices receive more points than more expensive options.
- Warranty (10 points): We check whether or not the provider offers a warranty, and if that coverage is limited or for the life of the window. Companies earn the most points for offering lifetime warranties.
- Customer service (10 points): We look to see if the company offers helpful customer service tools, like an online request form or easy-to-find phone number. The more tools available, the higher the company’s score.
To share feedback or ask a question about this article, send a note to our team at reviews@thisoldhousereviews.com.
