Mysa warranty for thermostats
The short version
Mysa doesn't cover everything, but keeps whole thermostat covered to 5 years. That full coverage is the same as most of the 5 brands we compared, which typically cover nothing in full. You don't need to register to get this coverage.
From Mysa'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 5 years
- Partial coverageWhole thermostat5 years
The fine print, decoded
What it leaves out
- Cracks
- Stopping working from outside causes
- Water damage
Good to know before you buy
- Damage from incorrect wiring or installation is not covered.
How other brands compare for thermostats
- 1. ecobee43/100 · Full: 3 years
- 2. Emerson Sensi23/100 · Full: None
- 4. Honeywell Home15/100 · Full: None
- 5. Amazon13/100 · Full: None
Where you buy it matters
How long stores give you to return it
Longest return window first, for thermostats.
- CostcoMost itemsNo fixed deadline
- SupplyHouseMost items365 days
- Lowe'sMost items90 days
- The Home DepotMost items90 days
- WalmartMost items90 days
- CrutchfieldMost items60 days
Show all 10 stores
- Ace HardwareMost items30 days
- Do it BestMost items30 days
- FergusonMost items30 days
- Best BuyMost items15 days from delivery
From each store's published return policy, using its rule for thermostats where it has one. Member and holiday extensions aren't counted. Check yours before you buy.
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