A Mattress Firm warranty claim is filed through the manufacturer’s online portal at mattressfirm.com/mattress-warranty.html, where you identify your mattress, describe the defect, and upload photos for review. The process itself is short. What makes or breaks a claim is what you have ready before you start: the original receipt, the law tag sewn into the mattress, and photos that meet the manufacturer’s specific requirements. Coverage terms vary by brand and model, so the warranty card that came with your mattress controls what qualifies.
What You Need Before You File
Gather everything before you open the portal. Missing a single item usually stops the process cold.
- Original sales receipt. This proves the purchase date, the price you paid, and that you are the original buyer. Most mattress warranties are non-transferable, so a mattress bought secondhand or received as a gift without the receipt generally has no coverage.
- Law tag. The fabric label sewn into the mattress seam, usually at the head or foot on the underside, carries the model name, manufacture date, and plant location. Federal labeling regulations require it on every mattress. You are legally allowed to remove it after purchase, but don’t. The manufacturer uses those details to identify your unit and confirm it matches your receipt.1eCFR. 16 CFR 1633.12 – Labeling
- Warranty card or booklet. This came with the mattress and states the specific coverage terms for your model, including the sag threshold and duration. If you no longer have it, look up your model on the manufacturer’s website.
- A straight edge and measuring tool. A yardstick or broom handle, plus a ruler or a coin such as a quarter, are what you’ll use to document sag depth. Mattress Firm’s portal also offers a printable measuring device.
The Five Photos to Take
Photo evidence carries the claim. Blurry or incomplete images are the fastest route to a resubmission request. Plan on these five before you log in to the portal:2Stearns & Foster. What Photos Do I Need for a Mattress Warranty Claim
- Purchase receipt. A clear photo or scan showing the date, retailer, price, and model.
- Full mattress with no bedding. Strip the sheets, pad, and topper. Take a well-lit photo of the entire surface.
- The defect, measured. Lay a yardstick or broom handle flat across the sagging area so it spans the full width. Place a quarter or ruler at the deepest point of the dip, leaning against the straight edge. The photo needs to show the full broom handle end to end with the measuring object visible in the low point. This documents the indentation depth with no weight on the mattress.
- Your bed frame or foundation. Photograph the support structure under the mattress, whether that’s a metal frame, wooden slats, a platform base, or an adjustable base.
- The law tag. Photograph the entire tag so every line of text, including the registry number, is legible.
Good lighting and a steady hand matter. If the warranty team can’t read the tag or make out the measuring tool, you’ll be asked to reshoot and resubmit.
Submitting Through the Portal
Open mattressfirm.com/mattress-warranty.html and follow the guided steps. The portal asks for the brand (Sealy, Serta, Tempur-Pedic, Stearns & Foster, Beautyrest, and so on) and the specific model. Enter the purchase price and delivery date exactly as they appear on the receipt. A description field lets you explain the defect in your own words: what the problem is, when you first noticed it, and how it affects your use of the mattress.
Upload each photo as a JPEG or PNG file, clear enough to read at full size. A preview screen appears before final submission. Confirm the law tag text and the measurement in the defect photo are both readable, then submit.
You’ll get an on-screen confirmation with a claim reference number. Save it. That number is your tracking ID for every follow-up, and the confirmation email that follows is your proof you reported the defect while the mattress was still under warranty. If you’d rather not use the portal, the Mattress Firm warranty page lists direct phone numbers for each manufacturer’s warranty department.
What Actually Qualifies as a Defect
Warranties cover manufacturing defects, not changes in how the mattress feels. Covered problems include broken coils, cracked or split foam, faulty seams, and body impressions that exceed the manufacturer’s written depth threshold. Gradual softening within the warranty period is not a defect and will not qualify.
Most major brands sold at Mattress Firm set the sag threshold at 1.5 inches for quilted or tufted mattresses and 0.75 inches for flat or smooth-top models. Sealy’s warranty, for example, covers “deterioration causing the mattress to have a visible indentation greater than one and one-half (1.5) inches for quilted or tufted mattresses, or greater than three-fourths (0.75) of an inch for flat top panel mattresses.”3Sealy. Sealy Mattress and Flat Foundation 10-Year Limited Warranty Serta uses the same thresholds.4Serta. What Does the Warranty Cover Measure with no weight on the bed, which is why the photo instructions above are so specific.
Check whether your warranty is prorated or nonprorated. A nonprorated warranty covers the full repair or replacement cost for the entire warranty period, though you may still owe transportation charges; Tempur-Pedic’s 10-year warranty is structured this way, with the buyer responsible for shipping.5Tempur-Pedic. 10-Year Full Replacement Limited Warranty Under a prorated warranty, your share of the replacement cost rises as the mattress ages, so a claim in year eight costs you more than one in year two.
Why Claims Get Denied
Knowing the common denials helps you catch problems before you file.
Stains or soiling of any kind. This catches more people than any other issue. Manufacturers treat a stained mattress as a biohazard that inspectors cannot safely handle, and the claim is rejected whether the stain has anything to do with the defect or not. Even a small mark disqualifies. A waterproof protector used from day one is the single best way to preserve coverage.
Inadequate bed frame or foundation. Slats on a slatted frame generally need to be spaced no more than three inches apart and rigid rather than flexing. Queen, king, and California king mattresses typically require a center support rail running perpendicular to the slats plus at least five to six legs. Tempur-Pedic’s warranty specifically voids coverage for “inappropriate foundations, box springs, adjustable bed bases, or bed frames.”5Tempur-Pedic. 10-Year Full Replacement Limited Warranty If your frame photo shows sagging slats or missing center support, the claim is likely to be denied.
Sag below the threshold. An indentation under 1.5 inches on a quilted top, or under 0.75 inches on a smooth top, is not a defect to the manufacturer.3Sealy. Sealy Mattress and Flat Foundation 10-Year Limited Warranty Measure carefully before filing.
Missing receipt or illegible law tag. Without the receipt you can’t prove purchase date or original ownership. Without a legible tag the manufacturer can’t confirm the model. Either is usually grounds for automatic denial.
Physical damage or misuse. Burns, cuts, tears, and damage from bending or forcing the mattress through a doorway fall outside coverage. Some warranties also exclude mattresses placed directly on the floor or on untreated wood.
What Happens After You Submit
The manufacturer’s warranty team reviews your photos and documentation. If the evidence clearly shows a qualifying defect, such as a sag exceeding the threshold, a broken coil, or visible structural failure, the claim can be approved on photos alone.
If the photos are inconclusive, the manufacturer arranges a third-party home inspection. An independent inspector schedules a visit and uses specialized tools to measure impressions and check the mattress and support system. The inspection fee is $79.99 and is not covered by the manufacturer’s warranty. You pay it whether the claim is ultimately approved or denied, which is another reason to make the photo evidence as strong as possible up front. During the visit, the inspector also checks for stains, damage, and pest activity that would void coverage. The report goes back to the manufacturer for a final decision, and you’re notified by email.
If the Claim Is Approved
An approved claim results in repair, replacement, or a credit toward a replacement, depending on what the warranty specifies. If your exact model has been discontinued, the manufacturer picks a comparable current model. You surrender the defective mattress at the time of replacement. Upgrading to a more expensive model is usually available if you pay the price difference.5Tempur-Pedic. 10-Year Full Replacement Limited Warranty
Transportation costs for the replacement are typically the buyer’s responsibility. Under a prorated warranty, you’ll also owe a percentage of the replacement cost based on years of ownership. The approval email spells out exactly what you owe, if anything, before the replacement ships.
If the Claim Is Denied
A denial is not always the end. Read the notice closely to see the specific reason. If the problem was a blurry photo or missing paperwork, resubmitting with better evidence may fix it. Denials based on stains or an inadequate frame are much harder to reverse.
You can contact the manufacturer’s warranty department directly rather than going only through Mattress Firm. The Magnuson-Moss Warranty Act prohibits any warranty from stating that the manufacturer’s decision is “final or binding,” and federal and state courts have jurisdiction over warranty disputes.6eCFR. Part 700 – Interpretations of Magnuson-Moss Warranty Act For a mattress that cost over a thousand dollars, that protection matters. If informal appeals fail, filing a complaint with the Federal Trade Commission or your state attorney general’s consumer protection division creates a formal record and sometimes prompts a second look.