What Mattress Warranties Actually Cover
Almost every mainstream mattress warranty covers a narrow set of structural manufacturing defects, not comfort issues or wear. Knowing the line between covered and not covered is the difference between a successful claim and a frustrating one.
Typically covered
- Body impressions (sag) deeper than the brand's specified threshold — usually 1 inch (Sealy, Stearns & Foster) to 1.5 inches (most DTC brands), with no body weight on the mattress
- Broken or protruding coils on innerspring and hybrid mattresses
- Cracked, split, or visibly degraded foam beyond normal wear
- Manufacturing defects in the cover (seams splitting, zipper failure on removable covers)
Typically NOT covered
- Comfort changes ('the mattress feels different than it did' is wear, not a defect)
- Stains of any kind — including normal sweat yellowing on most warranties
- Damage from improper foundation (slats too far apart, no center support, box spring with foam, mattress on the floor in some warranties)
- Normal softening as the mattress breaks in
- Removed law tag (the white 'do not remove' tag on the side of every mattress)
- Damage from moving, storing, or repurposing the mattress
- Any issue not reported within the warranty window
Before You File: Self-Diagnose the Issue
Two questions decide whether you have a legitimate claim:
- 1Is the issue a covered defect (sag, broken coil, foam failure) or a non-covered issue (comfort, stain, age-related wear)?
- 2Are you within the warranty window and was the mattress used per the manufacturer's care instructions (correct foundation, no stains, proper rotation)?
If both answers are yes, the claim is likely to succeed. If either is no, the claim will probably be rejected — but it doesn't hurt to file.
Step-by-Step Claim Process
Step 1: Locate the Documentation
- Original purchase receipt or order confirmation email
- The law tag attached to the mattress (the white tag that must never be removed)
- Brand product name and model number (often on the law tag or in your order confirmation)
- Manufacturer date code (sometimes printed on the law tag)
If you've lost the receipt, contact the retailer where you bought the mattress — most can pull purchase records by email address, phone number, or credit card. DTC brands keep order history indefinitely in your account.
Step 2: Document the Defect With Photos and Measurements
This is where most rejected claims fail. The brand will typically request specific photographic evidence:
What to photograph
- The full mattress on the foundation, with bedding removed (proves no concealed stains)
- The defect close-up (the sag, broken coil, split seam) from multiple angles
- A sag measurement using a straight edge: lay a yardstick or broomstick across the impression while the mattress is bare and unloaded; photograph the gap with a ruler showing the depth
- The foundation underneath the mattress (proves you're using an approved base)
- The law tag close-up showing model and date code
Take the photos in good lighting. Take more than you think you need — it's better to over-document than to delay the claim with a follow-up request.
Step 3: Contact the Brand
Most DTC brands have a dedicated warranty claim form on their support site. Mainstream brands sold through Mattress Firm, Costco, and other retailers usually direct you to the manufacturer (not the retailer) for warranty claims. Be prepared to provide:
- Original purchase date and receipt
- Product name and model
- Description of the defect (specific, measurable — 'sag of 1.5 inches in the center where my hips rest')
- Photos and measurements
- Your current address (for replacement shipment)
- Foundation type currently in use
Step 4: Wait for Review
Standard review time is 2 to 4 weeks for most brands. Some brands send an inspector to physically verify large claims (mostly mainstream brands like Sealy and Tempur-Pedic for premium models). DTC brands more commonly rely on photographic evidence.
Step 5: Replacement, Repair, or Refund
If approved, the brand will typically offer one of three remedies. Which one you get depends on the brand and the warranty terms:
Three common outcomes
- Free replacement of the same model — most common for DTC brands
- Prorated replacement (you pay a percentage based on years of use) — common for mainstream brand warranties past year 10
- Repair (replacing the failed component without sending a new mattress) — sometimes offered for innerspring brands
Prorated vs. Non-Prorated Warranties
This is the most important fine-print detail in any mattress warranty.
Non-prorated
The brand covers the full replacement cost for the entire warranty term. Most DTC brands (Saatva, Nectar, Helix, Casper) offer non-prorated warranties for at least 10 years. This is the consumer-friendly structure.
Prorated
Coverage decreases each year. A 20-year prorated warranty might cover 100% in years 1-5, 50% in years 6-10, 25% in years 11-15, and 10% in years 16-20. Common with mainstream brand long-tail warranties. The advertised length sounds generous but the practical coverage shrinks fast.
When comparing warranties, length alone is misleading. A 10-year non-prorated warranty is meaningfully better than a 25-year heavily-prorated one.
Common Reasons Claims Get Denied
- Visible stains anywhere on the mattress (including sweat yellowing on some brands)
- Removed or torn law tag
- Photos showing an unsupported foundation (broken slats, gaps over 3 inches, missing center support)
- Sag depth below the threshold when measured with no body on the mattress
- Inability to produce the original purchase receipt
- Claim filed after the warranty window closed
Your Trial Period Is Different (And Easier)
If your mattress is less than 100 nights old (depending on brand), the sleep trial — not the warranty — is the right path. Trials let you return for any reason, including comfort, no defect required. Warranty claims are for defects that develop after the trial ends.
If you're still inside the trial window, the trial path is simpler than a warranty claim.
Read: How Trial Periods Work →What If Your Claim Is Denied
- Request the specific reason in writing — the brand must provide it
- If the reason is documentation-based, resubmit with better photos and measurements
- If the reason is foundation-related and you've since corrected the foundation, document the new setup and request reconsideration
- Escalate to the brand's customer-service supervisor
- File a complaint with the Better Business Bureau and your state's attorney general consumer protection office — this often prompts re-review
- If you used a credit card, the chargeback window may have expired for the original purchase, but a credit-card dispute can sometimes succeed on premium warranty denial
If you're shopping for a replacement, the warranty guide covers what to look for in new warranty structures.
Read: Mattress Warranty Guide →Prevention: Habits That Preserve Warranty Coverage
What protects warranty coverage
- A waterproof mattress protector from day one — prevents the stain that voids most claims
- An approved foundation per the manufacturer's specs (most require slat spacing under 3 inches)
- Regular rotation per the manufacturer's schedule
- Keep the law tag attached
- Keep the original receipt or order confirmation in a permanent place (email folder, cloud drive)
A protector preserves warranty coverage and prevents most of the conditions warranties don't cover.
Browse Mattress Protectors →Not sure where to start?
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