Lochinvar Water Heater Warranty Guide
Manufactured by A.O. Smith Corporation · Warranty info last verified: March 2026
Lochinvar water heaters are manufactured by A.O. Smith Corporation. This guide covers 2 product lines: the Residential Gas Water Heater and Residential Electric Water Heater (Energy Saver). Across those lines, every line, from the Residential Gas Water Heater onward, carries 6-year tank or heat exchanger coverage, parts reach 6 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 615-889-8900.
Quick Warranty Facts
Tank / H.E. Coverage
6 years
Parts Coverage
6 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 |
|---|---|---|---|
Residential Gas Water Heater Residential gas storage water heaters, including power-vent and direct-vent condensing models (EJW series). | 6 yr | 6 yr | 1 yr |
Residential Electric Water Heater (Energy Saver) Energy Saver residential electric storage water heaters (KTA series). | 6 yr | 6 yr | 1 yr |
How to Register Your Lochinvar Water Heater
There is no strict registration deadline listed for Lochinvar, yet filing it is smart insurance for the 2 lines shown here. Registration puts your purchase date and installer on record so a later claim through 615-889-8900 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 Lochinvar paperwork in case you later call 615-889-8900.
What's Covered
- Defects in materials and workmanship under normal residential use
- Residential Gas Water Heater: 6-year tank coverage, 6-year parts, and 1-year labor
- Residential Electric Water Heater (Energy Saver): 6-year tank coverage, 6-year parts, and 1-year labor
What's NOT Covered
Lochinvar lists 4 situations that fall outside coverage on its 2 lines:
- Improper installation or operation
- Scale and sediment damage
- Commercial installations using residential-rated equipment
- Labor after year one
How to File a Lochinvar Warranty Claim
- 1
Locate serial and model numbers on the rating label
- 2
Contact Lochinvar at 615-889-8900
- 3
A factory-authorized service representative will assess the unit
- 4
Warranty parts are provided at no charge during coverage period
Lochinvar warranty line: 615-889-8900
Warranty Transferability: No
Warranty is for the original purchaser and installation site only.
Bought a home that came with a Lochinvar unit? Because Lochinvar 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 Lochinvar line at 615-889-8900 (labor help is limited to 1 year from install).
Additional Notes
Lochinvar is a premium manufacturer specializing in high-efficiency residential and commercial boilers, water heaters, and pool heaters. Acquired by A.O. Smith Corporation. Products are sold exclusively through professional installing contractors. Lochinvar's boilers (such as the CREST, KNIGHT, POWER-FIN, and NOBLE series) are space-heating appliances, not water heaters, and carry a separate heat-exchanger warranty (typically 10 to 12 years) rather than a tank warranty.
Related brands with similar warranty terms:
Lochinvar Warranty FAQ
How many years does the Lochinvar tank warranty last?
Lochinvar covers the Residential Gas Water Heater and Residential Electric Water Heater (Energy Saver) with a 6-year tank or heat exchanger warranty. Parts are covered for up to 6 years and labor for up to 1 year.
Can I transfer a Lochinvar water heater warranty to a new owner?
No. Lochinvar warranties are not transferable. Warranty is for the original purchaser and installation site only.
How do I check whether my Lochinvar 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 (Residential Gas Water Heater and Residential Electric Water Heater (Energy Saver)). You can also call Lochinvar at 615-889-8900 with your serial number.
What voids a Lochinvar water heater warranty?
Common warranty voiding issues for Lochinvar include: Improper installation or operation; Scale and sediment damage; Commercial installations using residential-rated equipment.
Does Lochinvar sell an extended warranty for the Residential Gas Water Heater and Residential Electric Water Heater (Energy Saver)?
The Residential Gas Water Heater and Residential Electric Water Heater (Energy Saver) carry only the standard Lochinvar factory warranty shown above; no separate extended plan is listed. Ask about dealer coverage when you call 615-889-8900.
What should I do if my Lochinvar water heater fails under warranty?
Locate serial and model numbers on the rating label. Then contact Lochinvar at 615-889-8900. The Lochinvar warranty line is 615-889-8900.
More for Your Lochinvar Water Heater
Not sure which of Lochinvar's 2 lines you have?
Coverage differs across Lochinvar's lines, so decode your serial number to find the manufacture date and match it to the right 2-line warranty range above.
Decode Your Lochinvar Serial NumberThe 2 coverage figures shown above were last verified in March 2026 and are provided as a helpful reference only. Warranty terms are set by Lochinvar 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 Lochinvar or A.O. Smith Corporation.