Windows: warranties compared
11 brands. We read every warranty so you don't have to. Checked through October 2026.
8 of 11 brands cover windows in full for one year or less. Milgard covers everything for life. 10 brands keep some parts covered after full coverage ends, and 8 keep something covered for life.
Every brand, side by side
- 1Milgard75/100Full: LifetimeNo partial coverage
- 2Pella67/100Full: 2 yearsPartial: to lifetimePartial covers: Non-glass parts; Glass (non-laminated); Between-glass blinds and shadesVaries by model line
- 3Renewal by Andersen57/100Full: 2 yearsPartial: to 20 yearsPartial covers: Glass and Fibrex frame; Non-glass parts
- 4ReliaBilt56/100Full: 1 yearPartial: to lifetimePartial covers: Frame and components; Insulated glass sealCheck your model's manual
- 5American Craftsman45/100Full: NonePartial: to lifetimePartial covers: Insulated glass seal; Frame and mechanical parts; Patio door built-in blinds
- 6Hy-Lite45/100Full: NonePartial: to lifetimePartial covers: Design Series acrylic block window; Classic Series acrylic block window; Decorative glass seal; and more
- 7JELD-WEN45/100Full: NonePartial: to lifetimePartial covers: Vinyl windows and patio doors; Wood and clad-wood windows and patio doors; Skilled labor
- 8MP Doors45/100Full: NonePartial: to lifetimePartial covers: Frame, astragal and panels; Non-impact glass seal; Locking mechanism; and more
- 9Simonton45/100Full: NonePartial: to lifetimePartial covers: Vinyl frame and sash; Hardware and screens; Glass breakage
- 10Andersen35/100Full: NonePartial: to 20 yearsPartial covers: Glass (standard Low-E4); Non-glass parts; Impact-resistant glass
- 11Marvin35/100Full: NonePartial: to 20 yearsPartial covers: Insulating glass; Hardware and non-glass parts
From each maker's published warranty. “Unverified” means we couldn't confirm the terms on the maker's own site. How we rate warranties
What these warranties often leave out
- Normal wear and tear8 of 11 brands
- Water damage7 of 11 brands
- Leaks6 of 11 brands
- Accidental breaks and misuse4 of 11 brands
- Fading3 of 11 brands
- Scratches, dents and looks2 of 11 brands
How long stores give you to return it
Longest return window first, for windows.
- Lowe'sMost items90 days
- The Home DepotMost items90 days
- Home OutletSoutheast and Midwest storesMost items90 days
- SutherlandsSouth Central storesMost items30 days
From each store's published return policy, using its rule for windows where it has one. Member and holiday extensions aren't counted. Check yours before you buy.
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Questions shoppers ask
Which brand of windows has the best warranty?
On paper, Milgard scores highest, with lifetime of full coverage.
Is a long warranty on windows really that long?
Often not for the whole product. Many longer warranties cover only certain parts after the first year or two, and you usually pay for the labor. The bars above show full and partial coverage separately.
Do I need to register to get the warranty?
None of the 11 brands require registration for their basic coverage. Registering can still get you recall notices. Keep your receipt either way.
Forward the receipt and I-BUY.AI tracks the return window and warranty for you.