Bosch warranty for water heaters
The short version
Bosch doesn't cover everything, but keeps heat exchanger and parts covered to 15 years. That full coverage is the same as most of the 11 brands we compared, which typically cover nothing in full. You don't need to register to get this coverage.
From Bosch'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 15 years
- Partial coverageHeat exchanger15 years
- Partial coverageParts5 years
- Partial coverageLabor (allowance)1 year
The fine print, decoded
What it leaves out
- Cracks
- Water damage
Good to know before you buy
- Hard or unsoftened water damage (scale) is not covered.
- Coverage ends at the year limit or 8,000 hours of use, whichever comes first.
- Covers the original buyer at the original address only.
How other brands compare for water heaters
- 1. Rinnai85/100 · Full: 5 years
- 2. Navien41/100 · Full: 1 year
- 3. EcoSmart40/100 · Full: None
- 5. A. O. Smith34/100 · Full: 1 year
- 6. Rheem30/100 · Full: None
Where you buy it matters
How long stores give you to return it
Longest return window first, for water heaters.
- SupplyHouseMost items365 days
- Blain's Farm & FleetUpper Midwest storesMost items90 days
- AJ MadisonMost items30 days from delivery
- Do it BestMost items30 days
- FergusonMost items30 days
- Lowe'sWater heaters and HVAC systems30 days
Show all 8 stores
- SutherlandsSouth Central storesMost items30 days
- The Home DepotAir conditioners, dehumidifiers, pumps, portable evaporative coolers and portable heaters7 days
From each store's published return policy, using its rule for water heaters where it has one. Member and holiday extensions aren't counted. Check yours before you buy.
Other things Bosch makes
- Blenders & Mixers18/100Full: None. Partial to 3 years.
- Coffee & Espresso Makers32/100Full: 2 years. No partial coverage.
- Dishwashers56/100Full: 1 year. Partial to lifetime.
- Heating & Cooling30/100Full: None. Partial to 10 years.
- Measuring & Test Tools10/100Full: None. Partial to 2 years.
- Microwaves21/100Full: 1 year. No partial coverage.
- Mini-Splits30/100Full: None. Partial to 10 years.
- Power Tools13/100Full: None. Partial to 1 year.
- Range Hoods21/100Full: 1 year. No partial coverage.
- Ranges, Ovens & Cooktops21/100Full: 1 year. No partial coverage.
- Refrigerators & Freezers21/100Full: 1 year. No partial coverage.
- Washers & Dryers21/100Full: 1 year. No partial coverage.
- Wine & Beverage Coolers21/100Full: 1 year. No partial coverage.
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