Kidde warranty for smoke & CO alarms
The short version
Kidde doesn't cover everything, but keeps smoke, combo and co alarms and co + explosive gas alarm (copdlg) covered to 10 years. That full coverage is the same as most of the 4 brands we compared, which typically cover nothing in full. You don't need to register to get this coverage.
From Kidde's published warranty, checked October 2026.
What's covered
Full coverage: everything, parts and laborPartial coverage: some parts only, you usually pay labor
Purchase5 yrs10 yrs+Full: NonePartial: to 10 years
- Partial coverageSmoke, combo and CO alarms10 years
- Partial coverageCO + explosive gas alarm (COPDLG)7 years
The fine print, decoded
What it leaves out
- Accidental breaks and misuse
- Normal wear and tear
Good to know before you buy
- Covers the original buyer only, for alarms bought from Kidde or an authorized US seller.
- Kidde sends a replacement alarm; installation is not covered.
- Older, discontinued models may have a shorter 3 to 5 year warranty.
How other brands compare for smoke & CO alarms
- 1. First Alert65/100 · Full: 10 years
- 2. X-Sense65/100 · Full: 5 years
- 4. Onelink23/100 · Full: None
Where you buy it matters
How long stores give you to return it
Longest return window first, for smoke & CO alarms.
- CostcoMost itemsNo fixed deadline
- Lowe'sMost items90 days
- The Home DepotMost items90 days
- WalmartMost items90 days
- Ace HardwareMost items30 days
- Do it BestMost items30 days
Show all 7 stores
- Best BuyMost items15 days from delivery
From each store's published return policy, using its rule for smoke & CO alarms where it has one. Member and holiday extensions aren't counted. Check yours before you buy.
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