U.S. Craftmaster Water Heater Warranty Guide
Manufactured by A.O. Smith Corporation · Warranty info last verified: March 2026
U.S. Craftmaster water heaters are manufactured by A.O. Smith Corporation. This guide covers 3 product lines: the Standard Residential, Mid-Grade Residential, and Premium Residential. Across those lines, tank or heat exchanger coverage climbs from 6 years on the Standard Residential to 12 years on the Premium Residential, parts reach 12 years, and labor runs up to 1 year. The warranty stays with the original owner and does not transfer to later owners, and claims run through 800-365-0024.
Quick Warranty Facts
Tank / H.E. Coverage
6–12 years
Parts Coverage
12 years max
Labor Coverage
1 year
Transferable
No
Extended Warranty
N/A
Registration Required
Recommended
Warranty by Product Line
Coverage periods vary by model series. Check your model against the table below.
| Product Line | Tank / H.E. | Parts | Labor |
|---|---|---|---|
Standard Residential Entry-level residential models. Sold through wholesale distributors. | 6 yr | 6 yr | 1 yr |
Mid-Grade Residential Mid-tier models with improved energy efficiency. | 9 yr | 9 yr | 1 yr |
Premium Residential Premium line with extended coverage. | 12 yr | 12 yr | 1 yr |
How to Register Your U.S. Craftmaster Water Heater
There is no strict registration deadline listed for U.S. Craftmaster, yet filing it is smart insurance for the 3 lines shown here. Registration puts your purchase date and installer on record so a later claim through 800-365-0024 moves faster.
You will need:
- Serial number (from the rating label)
- Model number
- Installation date
- Installer's name and contact info
- Your name and address
Keep a copy with your U.S. Craftmaster paperwork in case you later call 800-365-0024.
What's Covered
- Defects in materials and workmanship under normal residential use
- Standard Residential: 6-year tank coverage, 6-year parts, and 1-year labor
- Mid-Grade Residential: 9-year tank coverage, 9-year parts, and 1-year labor
- Premium Residential: 12-year tank coverage, 12-year parts, and 1-year labor
What's NOT Covered
U.S. Craftmaster lists 4 situations that fall outside coverage on its 3 lines:
- Improper installation
- Sediment and mineral buildup
- Labor after year one
- Unauthorized parts or modifications
How to File a U.S. Craftmaster Warranty Claim
- 1
Locate serial and model numbers on the rating label
- 2
Call Craftmaster customer service at 800-365-0024
- 3
Work with a licensed plumber or A.O. Smith authorized service provider
- 4
Warranty parts are provided at no charge
U.S. Craftmaster warranty line: 800-365-0024
Warranty Transferability: No
Warranty is for the original purchaser only and does not transfer.
Bought a home that came with a U.S. Craftmaster unit? Because U.S. Craftmaster coverage stays with the first owner, the remaining warranty probably did not follow the sale to you, even if the calendar time has not expired. To confirm, decode the serial with our free tool for the manufacture date, then call the U.S. Craftmaster line at 800-365-0024 (labor help is limited to 1 year from install).
Additional Notes
Craftmaster (also sold as U.S. Craftmaster) is manufactured by American Water Heater Company, an A.O. Smith subsidiary. Products are sold exclusively through professional wholesale distributors. Not available at retail stores.
Related brands with similar warranty terms:
U.S. Craftmaster Warranty FAQ
How many years does the U.S. Craftmaster tank warranty last?
U.S. Craftmaster tank or heat exchanger coverage ranges from 6 to 12 years, from the Standard Residential up to the Premium Residential. Parts are covered for up to 12 years and labor for up to 1 year.
Can I transfer a U.S. Craftmaster water heater warranty to a new owner?
No. U.S. Craftmaster warranties are not transferable. Warranty is for the original purchaser only and does not transfer.
How do I check whether my U.S. Craftmaster water heater is still under warranty?
Decode your serial number with our free tool at WaterHeaterChecker.com to find the manufacture date, then compare it against the coverage for your line (Standard Residential, Mid-Grade Residential, and Premium Residential). You can also call U.S. Craftmaster at 800-365-0024 with your serial number.
What voids a U.S. Craftmaster water heater warranty?
Common warranty voiding issues for U.S. Craftmaster include: Improper installation; Sediment and mineral buildup; Labor after year one.
Does U.S. Craftmaster sell an extended warranty for the Standard Residential, Mid-Grade Residential, and Premium Residential?
The Standard Residential, Mid-Grade Residential, and Premium Residential carry only the standard U.S. Craftmaster factory warranty shown above; no separate extended plan is listed. Ask about dealer coverage when you call 800-365-0024.
What should I do if my U.S. Craftmaster water heater fails under warranty?
Locate serial and model numbers on the rating label. Then call Craftmaster customer service at 800-365-0024. The U.S. Craftmaster warranty line is 800-365-0024.
More for Your U.S. Craftmaster Water Heater
Not sure which of U.S. Craftmaster's 3 lines you have?
Coverage differs across U.S. Craftmaster's lines, so decode your serial number to find the manufacture date and match it to the right 3-line warranty range above.
Decode Your U.S. Craftmaster Serial NumberThe 3 coverage figures shown above were last verified in March 2026 and are provided as a helpful reference only. Warranty terms are set by U.S. Craftmaster and may change at any time. Always refer to the warranty certificate that came with your water heater for the definitive terms of your coverage. WaterHeaterChecker.com is not affiliated with U.S. Craftmaster or A.O. Smith Corporation.