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Window installers and manufacturers compared on frame material, who does the install and what the warranty covers, since none publish a per-window price and written quotes decide.
By BestGuide Editorial Team, Editorial Team. See their work.Published June 2, 2026Updated October 16, 2026This page was compiled from primary sources: company disclosures and terms, the BBB and regulators. Our ratings method is described on the methodology page.
The best replacement window companies for most homeowners are full-service installers like DaBella, Window Nation, Renewal by Andersen and Champion Windows, which measure, sell and install under one contract, plus Lowe's if you want a retail option. Kolbe and Milgard are manufacturers you buy through local dealers, a good route if you want a specific material such as wood, aluminum-clad wood or fiberglass. To choose, compare frame material, what the warranty covers (parts, glass and labor), who does the installation, and the total written price from at least three quotes.
Our top picks
Best for vinyl windows with installation included in one quote, in the West and MidwestDaBellaBestGuide Score: 4.6 out of 5. Set by our editorial team from published factors such as cost, credentials, reputation, customer experience, services and guarantees. Verified partners are scored on our partner verification program and can be listed first; they are always labeled BestGuide Partner.Frame materialVinylInstallationIncluded in the quote
Best for comparing retail brands in person, then adding professional installationLowe'sThis company pays BestGuide when you connect with it through our site. Verified partners are scored on our partner verification program and can be listed first. Payment never changes what we report about fees, terms or complaints.BestGuide Score: 4.5 out of 5. Set by our editorial team from published factors such as cost, credentials, reputation, customer experience, services and guarantees. Verified partners are scored on our partner verification program and can be listed first; they are always labeled BestGuide Partner.
Best for one-day vinyl replacement with a transferable lifetime warrantyWindow NationThis company pays BestGuide when you connect with it through our site. Verified partners are scored on our partner verification program and can be listed first. Payment never changes what we report about fees, terms or complaints.BestGuide Score: 4.5 out of 5. Set by our editorial team from published factors such as cost, credentials, reputation, customer experience, services and guarantees. Verified partners are scored on our partner verification program and can be listed first; they are always labeled BestGuide Partner.Frame materialVinylInstallationOwn installers
Best for a composite (Fibrex) frame installed by the manufacturer's own networkRenewal By AndersenThis company pays BestGuide when you connect with it through our site. Verified partners are scored on our partner verification program and can be listed first. Payment never changes what we report about fees, terms or complaints.BestGuide Score: 4.2 out of 5. Set by our editorial team from published factors such as cost, credentials, reputation, customer experience, services and guarantees. Verified partners are scored on our partner verification program and can be listed first; they are always labeled BestGuide Partner.Frame materialFibrex compositeInstallationFull-service
Best for a lifetime warranty from a company that builds and installs its own vinyl windowsChampion WindowsThis company pays BestGuide when you connect with it through our site. Verified partners are scored on our partner verification program and can be listed first. Payment never changes what we report about fees, terms or complaints.BestGuide Score: 4.1 out of 5. Set by our editorial team from published factors such as cost, credentials, reputation, customer experience, services and guarantees. Verified partners are scored on our partner verification program and can be listed first; they are always labeled BestGuide Partner.Frame materialVinyl, fusion-welded frameInstallationOwn installation technicians
This guide is for homeowners replacing drafty, fogged or single-pane windows, whether that means a few units or the whole house. Because none of these companies publish a price per window, the work is in comparing quotes and warranties side by side.
Three choices shape the result. The first is who installs: one company that builds and installs, or a manufacturer whose local dealer does the work. The second is frame material, which drives price, upkeep and style. The third is the written warranty, since coverage for labor, glass and later owners differs widely between companies.
Below you will find companies compared on materials, installation, warranty and service area, followed by what drives cost, how materials compare, how to read efficiency labels, and the sales tactics to watch for.
Energy savings
Up to 13% lower household energy bills on average when replacing single-pane windows with ENERGY STAR certified models13
Federal tax credit
The 25C credit (30% up to $600 for windows) covered improvements made through December 31, 202514
Right to cancel
3 business days for contracts signed in your home or away from the seller's place of business15
Typical warranty range
From a 1-year labor warranty (Lowe's installation) to lifetime parts and labor (Milgard, original owner in its service territory)12
Price per window
Not published by any company on this list; all quote after an in-home or virtual measure6
Best for vinyl windows with installation included in one quote, in the West and Midwest: DaBella
4.6/5
Frame material
Vinyl
Installation
Included in the quote
Warranty
Lifetime limited transferable warranty on Glasswing windows
Why we picked it. DaBella sells and installs its own vinyl lines and states that installation is included in the initial quote, which makes quotes easier to compare line by line. Its Glasswing warranty is transferable, which can help when you sell the home.
More details, pros and cons
Financing: Through third-party lenders; DaBella says it is not a lender or broker
ENERGY STAR: ClimaTech PriME glass meets ENERGY STAR Most Efficient criteria in all climate zones, per DaBella
Pros
Installation is part of the quoted price
Glass package meets ENERGY STAR Most Efficient criteria, according to the company
Large footprint across the West, Plains and parts of New England
Cons
Vinyl only, with no wood, fiberglass or aluminum frames
No published prices, so you need an in-home quote
Not available in much of the Southeast and Mid-Atlantic
Skip it if: You want wood or fiberglass frames, or you live outside DaBella's service states.
More about DaBella
DaBella excels in providing highly energy-efficient custom windows. Partnering with established manufacturers, they offer the exclusive Glasswing window line that significantly exceeds strict energy standards, paired with a robust lifetime warranty that brings absolute peace of mind to homeowners looking to reduce energy bills over the long term.
Best for comparing retail brands in person, then adding professional installation: Lowe'sThis company pays BestGuide when you connect with it through our site. Verified partners are scored on our partner verification program and can be listed first. Payment never changes what we report about fees, terms or complaints.
4.5/5
Frame material
Varies by the brand and series you buy in store or online
Installation
Independent local installers that Lowe's says are licensed
Warranty
1 year
Why we picked it. Lowe's lets you choose among several window brands at retail and then book installation, which suits you if you want to see products in person and compare prices before committing. It works differently from the full-service companies on this list, because the installer is an independent contractor.
More details, pros and cons
What install includes: Same-size opening in sound condition, caulking and insulating, removal and haul-away of old windows, cleanup, per Lowe's
Pros
Shop and compare brands in person
Standard install scope is spelled out (removal, haul-away, cleanup)
Good fit for a few windows rather than a whole house
Cons
1-year labor warranty is shorter than most full-service installers offer
Install scope assumes same-size openings with no rotten wood; repairs cost extra
Installer quality depends on the local contractor
Skip it if: You want one company to stand behind both the window and the installation for the life of the product.
More about Lowe's
Lowe's is a home improvement giant offering access to an unmatched variety of top window brands like Pella and JELD-WEN. Their comprehensive retail model handles everything from product selection and competitive financing to coordinated installation by local professionals, all backed by a strong double lifetime warranty.
Best for one-day vinyl replacement with a transferable lifetime warranty: Window NationThis company pays BestGuide when you connect with it through our site. Verified partners are scored on our partner verification program and can be listed first. Payment never changes what we report about fees, terms or complaints.
4.5/5
Frame material
Vinyl
Installation
Own installers
Warranty
Limited lifetime transferable warranty on vinyl frames
Why we picked it. Window Nation publishes clear warranty terms that name what is covered, including glass seal failure that causes fogging. The warranty transfers to a buyer if you file within 60 days of closing, though a transfer fee applies.
More details, pros and cons
Ownership
Private equity firm AEA Investors since July 2021
Financing: Promo of $0 down and 0% interest for 2 years, 17.99% APR after, as listed October 2026
Regulatory: Paid a penalty in a 2022 expedited EPA settlement under the Toxic Substances Control Act (docket TSCA-07-2022-0086)
Pros
Published, specific warranty terms
One-day installation, according to the company
Also installs entry, French and sliding doors
Cons
Warranty excludes labor
Heavy promotions (for example, buy 4, get 4 free with a 4-window minimum) make the true per-window price hard to judge
Transfer must be requested within 60 days of closing and carries a fee
2022 EPA TSCA settlement; the public docket does not say what the violation was
Skip it if: You want labor covered by the warranty, or you are replacing only one or two windows.
More about Window Nation
Window Nation is a leading full-service installer with a massive selection of high-quality window styles and materials. They stand out with their highly competitive pricing structure and an exceptional, fully transferable Lifetime+ warranty that generously covers materials, labor, and even accidental glass breakage.
Best for a composite (Fibrex) frame installed by the manufacturer's own network: Renewal By AndersenThis company pays BestGuide when you connect with it through our site. Verified partners are scored on our partner verification program and can be listed first. Payment never changes what we report about fees, terms or complaints.
4.2/5
Frame material
Fibrex composite
Installation
Full-service
Warranty
Limited warranty
Why we picked it. Renewal by Andersen is the replacement division of Andersen and sells its own Fibrex composite, which the company describes as combining the stability of wood with the low upkeep of vinyl. The company also cites J.D. Power awards for customer satisfaction among window and patio door manufacturers.
More details, pros and cons
Financing
Offered; terms discussed at consultation, not published
ENERGY STAR: 2024 ENERGY STAR Partner of the Year Sustained Excellence award, per the company
Pros
Composite frame is a step up from standard vinyl
One company handles sales, measuring and installation
ENERGY STAR partner recognition, according to the company
Wide national showroom network
Cons
No published pricing; you see a price only at the in-home consultation
Warranty details are not on the main site pages
Fibrex is a single proprietary material, so you get less choice than with a dealer brand
Skip it if: You want to compare published prices online, or you prefer wood, fiberglass or aluminum frames.
More about Renewal By Andersen
Renewal by Andersen delivers a white-glove, start-to-finish window replacement experience. Utilizing their proprietary and incredibly durable Fibrex composite material, they provide single-source accountability for custom manufacturing and precise professional installation that upgrades both efficiency and home value.
Best for a lifetime warranty from a company that builds and installs its own vinyl windows: Champion WindowsThis company pays BestGuide when you connect with it through our site. Verified partners are scored on our partner verification program and can be listed first. Payment never changes what we report about fees, terms or complaints.
4.1/5
Frame material
Vinyl, fusion-welded frame
Installation
Own installation technicians
Warranty: Champion Limited Lifetime Warranty on Comfort 365 windows for as long as the original purchaser owns the home
Why we picked it. Champion makes its own vinyl windows and installs them, so one company owns the product, the install and the warranty. It also builds sunrooms and siding, which helps if you are bundling exterior projects.
More details, pros and cons
Financing: 12 months no payments; 29.49% APR accrues and is waived if paid in full in the promo period; 2 to 15 year terms, as listed October 2026
ENERGY STAR: Certified, except homes at 8,000 feet altitude or higher, per Champion
Pros
Manufacturer and installer are the same company
Wide range of styles, including bay, bow, garden and glass block
Made in the USA, according to the company
Cons
Deferred-interest financing at 29.49% APR if you do not pay it off in time
Promotions (buy 2, get 2 free) make list prices hard to compare
Warranty covers only the original purchaser, not a later buyer
Skip it if: You plan to sell soon and want a warranty that transfers, or you want a material other than vinyl.
More about Champion Windows
Champion Windows has operated for decades as both a manufacturer and an installer. Their vertically integrated model gives homeowners a single point of accountability for the entire window replacement process, ensuring high-quality control and seamless warranty claims without the hassle of dealing with third-party contractors.
We compared each company on frame materials offered, who performs the installation, written warranty terms (parts, labor, glass and transferability), service area, financing terms as published, and ENERGY STAR claims. Facts come from each company's official website and published warranty documents, ENERGY STAR, the IRS and the FTC, checked October 2026. We did not test windows or receive in-home quotes, and no company published per-window prices. Our pick order is editorial and is not based on a numeric score. Read our full methodology.
How much replacement windows cost
None of the companies on this list publish a price per window. Each one quotes after measuring your home, and several advertise promotions such as buy 2 or buy 4, get the same number free. Those offers make it hard to tell the real price of one window.
What drives the price
Frame material. Vinyl is usually the lowest cost, composite and fiberglass sit in the middle, and wood or aluminum-clad wood is usually the most expensive.
Style and size. Bay, bow, garden and custom shapes cost more than double-hung or sliders.
Glass package. Triple pane, low-E coatings and argon or krypton fill raise the price and the efficiency.
Installation type. Insert (pocket) installs keep the existing frame; full-frame installs replace it and cost more, especially if there is rot.
Project size. Whole-house jobs usually carry a lower price per window than one or two units.
How to compare quotes
Ask each company for the total price in writing, broken out by window, with installation, trim, disposal and permits listed. Compare totals, not discounts. A 40% discount off a high list price can still cost more than a plain quote from another installer.
How to choose a replacement window company
Decide between an installer and a dealer brand. Full-service companies (DaBella, Window Nation, Renewal by Andersen, Champion) sell their own windows and install them. Manufacturers (Kolbe, Milgard) sell through local dealers, and Lowe’s uses independent installers.
Pick the frame material for your climate and budget. See the material comparison below.
Read the actual warranty. Check whether it covers labor, glass seal failure, glass breakage and finish, and whether it transfers when you sell.
Check the ENERGY STAR and NFRC labels. Make sure the ratings fit your climate zone.
Get at least three written quotes. The FTC recommends multiple written estimates that describe the work, materials, completion date and price.
Verify the license and insurance. Check with your state or county before you sign.
Vinyl vs. composite vs. fiberglass vs. wood windows
Material
Picks that offer it
Upkeep
Good fit
Vinyl
DaBella, Window Nation, Champion, Milgard
Low; no painting
Most budgets and whole-house jobs
Composite (Fibrex)
Renewal by Andersen
Low
Buyers who want more rigidity than vinyl without wood upkeep
Fiberglass
Milgard, Kolbe (Forgent series)
Low; paintable finishes
Hot or cold climates with big temperature swings
Wood and clad wood
Kolbe
Higher on wood surfaces; cladding protects the exterior
Historic homes and custom architecture
Aluminum
Kolbe (VistaLuxe AL)
Low
Modern designs with large glass
Whatever the material, the glass package and installation quality matter as much as the frame for comfort and drafts.
Energy efficiency, ENERGY STAR and tax credits
ENERGY STAR says replacing single-pane windows with certified models lowers household energy bills by up to 13% on average nationwide. Certified windows are rated for climate zones, so a window that qualifies in Minnesota may not qualify in Texas.
How to read the label
U-factor. How well the window keeps heat in. Lower is better, and it matters most in cold climates.
Solar heat gain coefficient (SHGC). How much solar heat gets through. Lower is better in hot, sunny climates.
NFRC label. The independent rating sticker on each window. ENERGY STAR suggests keeping it as proof of performance.
Federal tax credit
The IRS Energy Efficient Home Improvement Credit (25C) covered 30% of the cost of qualifying windows, up to $600 a year, for improvements made through December 31, 2025, and windows had to meet ENERGY STAR Most Efficient requirements. If a salesperson cites this credit for a 2026 installation, ask to see the current IRS rule. Check your utility and state energy office for local rebates, which vary by area.
Red flags when you buy windows
Today-only pricing. The FTC warns that pressure to act fast is a sign of a scam, and it calls out high-pressure door-to-door sales of windows by name.
Large upfront payments. The FTC advises against paying the full amount upfront; some states cap down payments.
A contractor who steers you to a specific lender. Shop financing on your own. Watch for deferred-interest offers, where interest at a high APR is charged back if the balance is not paid in full in time.
Blank spaces in the contract or missing start and completion dates, license number or warranty documents.
No mention of your cancellation right. If you sign at home, the contract should state your right to cancel within three business days.
A request that you pull the permit. The installer should handle permits.
Alternatives to full window replacement
Repair or reglaze. If the frames are sound, replacing failed glass units or weatherstripping costs far less than a new window. Fogging between panes is often covered by the original maker’s warranty.
Insert replacement. This keeps the existing frame and trim, which lowers labor cost when the frame is in good shape.
Storm windows and window attachments. These are a lower-cost way to cut drafts in older homes.
Buy at retail, hire separately. Buying windows at a home center and hiring a licensed local installer can lower cost, but you manage two warranties.
Terms to know
U-factor
A rating of how much heat a window lets escape; lower numbers insulate better.
Solar heat gain coefficient (SHGC)
The share of solar heat that passes through the glass; lower numbers block more heat.
NFRC label
The National Fenestration Rating Council sticker that lists a window's tested energy ratings.
Low-E glass
Glass with a thin metallic coating that reflects heat to improve efficiency.
Insulated glass unit (IGU)
Two or more panes sealed together with a gas-filled space between them.
Seal failure
A broken seal in an insulated glass unit that causes fogging between panes.
Insert installation
A replacement method that fits a new window inside the existing frame.
Deferred interest
A financing promotion in which interest accrues and is charged if the balance is not paid in full by the end of the promo period.
Frequently asked questions
What is the best replacement window company?
It depends on where you live and what material you want. Full-service installers like Renewal by Andersen, Window Nation, DaBella and Champion handle the whole job, while Milgard and Kolbe are manufacturers you buy through dealers. Compare written quotes and warranty terms from at least three companies serving your ZIP code.
Is it better to buy windows from an installer or a manufacturer's dealer?
A full-service installer gives you one company responsible for the window and the installation. A dealer route can offer more brand and material choice, but install quality depends on the dealer's crew, and manufacturer warranties often exclude installation defects, as Milgard's does.
What window frame material lasts longest?
Vinyl, composite and fiberglass need little upkeep and are common in lifetime warranties. Wood and clad wood can last a long time with maintenance, but warranties on wood components are often shorter, such as Kolbe's 10 years on window and door products.
Do replacement window warranties cover labor?
Not always. Window Nation's warranty excludes labor, Lowe's installation labor is covered for 1 year, and Milgard covers parts and labor for life only for the original owner inside its service territory. Ask for the written warranty before you sign.
Do window warranties transfer when I sell my house?
Some do. DaBella's Glasswing warranty and Window Nation's warranty are transferable, with Window Nation requiring a request within 60 days of closing and a fee. Champion's lifetime warranty applies while the original purchaser owns the home, and Milgard drops to a 10-year limited warranty for later owners.
Can I still get a federal tax credit for new windows?
The IRS 25C credit covered qualifying windows for improvements made through December 31, 2025, at 30% of cost up to $600. For work in 2026, check IRS.gov for current rules and ask your utility or state energy office about local rebates.
How much can ENERGY STAR windows save?
ENERGY STAR says replacing single-pane windows with certified models cuts household energy bills by up to 13% on average nationwide. Savings depend on your climate, your old windows and how well the new ones are installed.
Can I cancel a window contract after signing?
Under the FTC's Cooling-Off Rule, you generally have three business days to cancel a contract signed in your home or somewhere other than the seller's permanent place of business. The contract should include a written notice of this right.
Are buy one, get one free window deals real?
They are real promotions, but they apply to the company's own list price, often with a minimum number of windows. Compare the final written total from several companies rather than the size of the discount.
How long does window replacement take?
Window Nation says it completes installation in one day. Most companies on this list build windows to order after measuring, so the wait between signing and installation depends on the company and season. Ask for the order lead time and install date in writing.
Sources (19)
Facts on this page come from company websites, government agencies and regulators, checked on the dates shown. Editorial standards
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