Marey water heater warranty terms vary by product line — point-of-use units typically have shorter warranties than whole-house tankless systems, and commercial models have stricter coverage limitations.
Typical Marey warranty terms
| Product type | Heat Exchanger / Element | Parts | Labor |
|---|---|---|---|
| Point-of-use residential | 3 years | 1 year | None |
| Whole-house tankless residential | 5–10 years | 1–3 years | None |
| Commercial | 1–3 years | 1 year | None |
Specific terms vary by model — verify with the warranty card included with your unit.
What's covered
- Heat exchanger or heating element defects within rated period
- Control board and electronic component failures within parts-warranty period
- Manufacturer workmanship defects evident from first use
What's NOT covered
- Damage from improper installation (wrong electrical sizing, gas pressure, water pressure)
- Hard-water mineral damage (descaling failure)
- Damage from water quality outside published spec (chloride limits, TDS limits)
- Freeze damage
- Use in unintended applications (residential unit in commercial use)
- Damage from third-party additives or non-OEM parts
- Cosmetic damage and shipping marks
- Consequential damage (water damage to flooring, contents)
Filing a Marey warranty claim
- Document failure with photos including Marey data plate
- Identify model and manufacture date
- Contact Marey customer service for warranty assessment
- Provide proof of purchase and installation
- Be prepared to demonstrate proper installation and maintenance (descaling records for hard-water-area claims)
- Replacement parts shipped or, for major failures, full unit replacement under valid claim
Critical warranty considerations
- Registration: Some Marey models require registration within 30–60 days of installation for full warranty
- Installation by licensed professional: may be required for some commercial models
- Descaling records: hard-water-area claims often require evidence of proper maintenance
- Water quality testing: if claim involves heat-exchanger failure, Marey may request water test results