Description
The Rinnai 104000021-K is an OEM replacement gas valve kit engineered specifically for Rinnai tankless water heater models R50, R63LSE2, R75, and R94. Designed to restore precise gas flow regulation and maintain the high-efficiency performance that Rinnai tankless systems are known for, this kit ensures a proper, manufacturer-approved fit with no guesswork.
Product Overview
When a gas valve fails or begins to underperform, it can compromise water heating efficiency, cause erratic temperature output, or trigger fault codes. The 104000021-K kit provides everything needed for a complete gas valve replacement on compatible Rinnai R-Series units, making it the go-to solution for HVAC and plumbing technicians servicing these popular tankless water heaters.
Compatible Models
- Rinnai R50
- Rinnai R63LSE2
- Rinnai R75
- Rinnai R94
Key Features
- OEM Rinnai replacement part — ensures manufacturer-spec performance
- Direct-fit design for R50, R63LSE2, R75, and R94 tankless water heater models
- Restores accurate gas flow modulation for consistent hot water delivery
- Supports the high-efficiency operation of Rinnai R-Series tankless units
- Helps eliminate fault codes and erratic heating behavior caused by a faulty gas valve
- Suitable for both natural gas and LP configurations (verify unit compatibility)
Why Choose OEM Rinnai Parts?
Using genuine Rinnai replacement components like the 104000021-K ensures your repair meets original factory specifications. Aftermarket substitutes may not provide the precise modulation range or safety shutoff performance required by Rinnai’s engineering standards. This kit is the professional’s choice for a lasting, reliable repair.
Application
Ideal for HVAC technicians, plumbers, and service professionals performing gas valve replacements on Rinnai R-Series residential tankless water heaters. Always follow Rinnai’s service documentation and local codes when performing gas valve replacements.
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