The 5 Best Window Brands of 2026, Ranked by Warranty Coverage

What the five warranties cover, side by side

Rank	Brand	Non-glass parts, original owner	Insulating glass seal	After you sell	Labor
1	Simonton (5500, 5050, Inovo)	Lifetime	20 yrs at 100%, then prorated to 75% and 50%	One transfer, lifetime continues	Not covered
2	Harvey (vinyl)	Lifetime while you own and reside	20 years	Next owner only, 20 yrs from manufacture	Not covered
3	Infinity from Marvin	Lifetime if registered within 60 days, else 10 yrs	20 years	Drops to the 10/20, which is fully transferable	Not covered
4	Andersen (400 and 200 Series)	10 years	20 years, no size limit	Transfers in full, no owner cap	Not covered
5	Marvin (Ultimate, Modern, Vivid, Elevate, Essential)	10 years	20 yrs up to 60 sq ft, 10 yrs above	Transfers in full	Not covered

Terms read from each manufacturer's published limited warranty document in November 2026. The version of each document is named in the entry below.

How we ranked these window brands

This is a ranking of warranty documents, not of windows. Every brand here makes a window somebody is happy with. What differs, enormously, is what the company writes down and signs its name to, and that is the only part a buyer can check before the money moves.

We pulled the published limited warranty document for each brand and read it in full, and each entry below names the version it came from. Four criteria, applied in this order:

1. How long the non-glass parts are covered for the original owner. Frames, balances, locks, rollers, sash retainers. This is what actually wears out.
2. What survives when the house is sold. Most coverage changes shape at this moment, and almost nobody reads that clause before buying.
3. The insulating glass seal term, and whether it is prorated. A seal failure is the classic window claim, and a prorated schedule means you pay a share of the replacement.
4. Whether labor is covered. Reported for every brand, and it turned out not to separate them at all. More on that below.

Ties on the first criterion are broken by the second, then the third.

What we left out, and why. Pella, Milgard, ProVia and JELD-WEN are not ranked. In each case we could not open the current warranty document at the manufacturer's own source, and warranty terms are exactly the kind of thing that changes between revisions. Ranking a brand on a document we could not confirm was current would be worse than leaving it out. Harvey's Majesty wood line is also excluded: it is a different product class with its own document, where the insulating glass coverage is prorated on a schedule that is not comparable to the vinyl line.

One caveat to carry into the list. Warranty terms are tied to a specific line, a specific purchase date and often a specific installer. Every entry below names the document it came from. Read the one attached to your own quote before you sign.

Every warranty here stops at the parts

This is the finding that mattered most, and it is unanimous across all five brands. Not one of these product warranties pays for labor.

Simonton states it plainly: labor costs are not included, and neither Simonton nor its distributors are responsible for costs of removal, replacement, installation, reinstallation or repair (Simonton Lifetime Limited Warranty). Harvey's warranty covers repairing or replacing defective parts and return transportation, and says it does not include labor or other costs of removal, replacement, installation or reinstallation (Harvey vinyl window warranty). Harvey's support pages put the same thing in one line: the warranties are for parts and mechanisms, and they do not cover labor charges (Harvey warranty hub). Andersen's remedy is to ship the correct replacement part to the dealer you name, with labor not included (Andersen 400 and 200 Series Limited Warranty). Marvin and Infinity use near-identical wording: removal, installation, finishing, refinishing and disposal costs and services are not included (Marvin Limited Warranty, Infinity Limited Lifetime Warranty).

So the practical shape of a year-12 seal failure is the same whichever of these brands you bought. The glass unit arrives free. A person still has to come and fit it, and that invoice is yours. Budget two to four hundred dollars for a service call on a single unit, and understand that a "lifetime warranty" has not made your windows free to maintain.

Labor coverage, where it exists at all, comes from a separate installation warranty written by whoever installed the windows, not by the company that made them. Infinity Replacement locations publish a five-year installation document alongside the product warranty (Infinity warranty page). That is the document to ask about, and it is a different piece of paper. Our guide to window installation covers what a good install includes.

The 5 best window brands of 2026

1. Simonton

Non-glass parts: lifetime. Transfers once, still as a lifetime. Simonton's current document, covering the 5500, 5050 and Inovo lines for purchases on or after 1 July 2026, warrants vinyl components, hardware and screens for the lifetime of a residential warranty holder (Simonton Lifetime Limited Warranty).

What puts it first is the transfer clause. Simonton calls it Double-Lifetime: the original residential owner can transfer the vinyl, hardware and screen coverage one time to a subsequent residential owner, and the residential warranty period continues rather than converting to a fixed term. No other brand on this list does that.

The glass is the honest weak spot. Insulating glass runs 20 years to lifetime, but it is prorated: Simonton covers 100 percent of its list price for the unit in years 0 to 20, 75 percent in years 21 to 50, and 50 percent from year 51. So the headline reads lifetime and the year-30 reality is a 25 percent bill plus the installer. Glass breakage is three years, and only with double-strength glass. There is also a sharp coastal exclusion: casement and awning hardware installed within two miles of salt water drops to a two-year period.

2. Harvey

Non-glass parts: lifetime. The next owner gets 20 years from manufacture. Harvey's vinyl warranty covers the solid vinyl members, screening and the mechanical parts that fail first, locks, keepers, balances and sash retainers, for as long as the original purchaser owns and lives in the house (Harvey vinyl window warranty).

The transfer is the clearest sentence of any document we read, and it is worth knowing before you buy rather than after: coverage is limited to only the next subsequent owner, and runs 20 years from the date of manufacture. Not 20 years from the sale. A buyer taking on 14-year-old Harvey windows has six years left, not twenty.

Where it is weaker: broken glass is excluded outright, so a stone from a mower is on you regardless of age. The warranty applies to Harvey's main vinyl styles and specifically does not apply to Garden Windows or the V-Series single hung and picture windows, acoustic vinyl drops to a 10-year non-transferable term, and anything not installed in an individual homeowner's residence gets 10 years.

3. Infinity from Marvin

Non-glass parts: lifetime, but only if you register within 60 days. Infinity's document, effective 1 July 2023, warrants the Ultrex fiberglass and other non-glass components for as long as the original owner-occupant of a detached single-family home owns and occupies it (Infinity Limited Lifetime Warranty).

That lifetime term carries a condition no other brand here imposes. You must register the products with Infinity within 60 days of installation. Miss it and the document says you do not receive the Limited Lifetime Warranty at all; you receive the 10/20 warranty instead, meaning 10 years on non-glass components and 20 on the glass seal. It is the single most expensive sentence on this page, and it costs nothing to comply with.

It ranks third rather than higher because the lifetime coverage does not travel. Sell the house and the 10/20 warranty applies for the remainder of its term. The 10/20 is fully transferable, so a second owner is not left with nothing, but the lifetime promise was never theirs. Note too that coastal hardware, the glass and the Ultrex finish sit outside the lifetime term from the start.

4. Andersen

Non-glass parts: 10 years, transferable to whoever owns the house. Andersen's 400 and 200 Series document, for units manufactured after 6 November 2015, warrants glass for 20 years against defects and against premature failure of the glass or organic seal, and non-glass portions for 10 years (Andersen 400 and 200 Series Limited Warranty).

Andersen brands this Owner-To-Owner, and the structure is the cleanest here. Both terms are transferable with no registration condition, no owner-occupancy test and no cap on the number of owners. The 20-year glass term carries no size limit, which is why it edges Marvin.

Where it is weaker: 10 years on hardware is half of what the vinyl brands above promise their first owner, and the document carves out several items most buyers assume are included. Electric window operators, retractable insect screens and the finishes on bright brass and satin nickel door hardware are excluded from the non-glass warranty, and anything with a wood exterior drops from 10 years to 5.

5. Marvin

Non-glass parts: 10 years, fully transferable, with a size limit on the glass. The Marvin Limited Warranty effective 12 January 2026 covers the Ultimate, Modern, Vivid, Elevate and Essential lines, and states that it extends to the owner of the structure and is fully transferable (Marvin Limited Warranty, Marvin warranty page).

Hardware and other non-glass components are warranted for 10 years. Standard insulating glass with stainless steel spacers is covered against seal failure for 20 years in sizes up to 60 square feet, and for 10 years at 60 square feet and above.

That size threshold is why Marvin places last on warranty paper, and it deserves context rather than a sneer. Marvin sells large-format and architectural units in volume, so the people most likely to hit the 60 square foot cliff are exactly the ones buying the biggest, most expensive glass in the house. It is also the only brand here that tells you the cap exists. Elsewhere the document is strong: 20 years on standard exterior aluminum cladding finish, and a coastal clause that covers stainless and PVD-finish hardware for 10 years instead of excluding it.

Before you sign anything

Three checks, in the order they save you money. First, get the warranty document for the exact line you are quoted, not the brand's general page, and check its effective date against your purchase date. Second, ask the installer for their own labor warranty in writing, because the manufacturer's document will not cover their work. Third, if the brand requires registration, do it the week the job finishes.

If you are still choosing a frame material rather than a brand, our ranking of the best vinyl windows by published U-factor covers the energy numbers, and the window replacement cost guide sets the budget. If you have not picked a company yet, start with how to choose the right replacement windows.

We publish a new breakdown like this every week. Get our Window Quote Checklist, the one-page list of what to confirm before you sign, plus the next brand teardown in your inbox first.

Which window brand has the best warranty in 2026?

On published terms, Simonton. Its current document covers vinyl components, hardware and screens for the lifetime of a residential owner, and it is the only warranty here that lets the original owner transfer that lifetime coverage once to the next owner rather than converting it to a fixed number of years. The trade-off is that its insulating glass coverage is prorated after year 20.

Does a lifetime window warranty cover labor?

No, not on any of the five brands we read. Simonton, Harvey, Andersen, Marvin and Infinity all exclude labor from the product warranty. Each will supply or repair the defective part, and each states that removal, installation and reinstallation costs are not included. Labor coverage, when you have it, comes from a separate installation warranty issued by the installer.

What does "lifetime" actually mean on a window warranty?

It means your lifetime in that house, not the window's. Harvey's document covers parts for as long as the original purchaser owns and resides in the home. Infinity's runs for as long as the original owner-occupant owns and occupies it. In both cases the clock stops when you move out, and what the next owner inherits is set by a separate transfer clause.

Does a window warranty transfer when I sell my house?

Something usually transfers, but rarely the headline term. Andersen and Marvin transfer their 20-year glass and 10-year component coverage in full to whoever owns the house. Harvey passes coverage to the next owner only, and only for 20 years from the date of manufacture. Infinity's lifetime coverage does not transfer at all; the buyer gets the remainder of the 10/20 warranty. Simonton is the exception that keeps a lifetime term alive through one transfer.

What is a prorated glass warranty?

It means the manufacturer pays a declining share of the replacement unit as the years pass. Simonton's 5500 schedule covers 100 percent of its list price for the insulating glass unit in years 0 to 20, 75 percent in years 21 to 50, and 50 percent from year 51. A flat 20-year term, like Andersen's, pays the full part for 20 years and nothing after. Neither pays the installer.

Do I need to register a window warranty?

For Infinity from Marvin, yes, and it is not optional. The document requires registration within 60 days of installation, and says that without it you receive the 10/20 warranty rather than the Limited Lifetime Warranty. Simonton encourages registration to speed up claims but does not condition coverage on it. Check your own document, because this single step can be the difference between 10 years of hardware coverage and a lifetime of it.