Description
The Noritz ETHH002 is a genuine OEM exhaust thermistor designed as a direct replacement for Noritz tankless water heaters. This exhaust temperature sensor monitors flue gas temperatures at the heat exchanger outlet, providing critical data to the unit’s control board to ensure safe and efficient operation. When exhaust temperatures exceed safe thresholds, the thermistor signals the system to shut down, protecting the unit from overheating and potential damage.
Key Features
- Genuine Noritz OEM replacement part — ensures proper fit and function
- Monitors exhaust/flue gas temperature for safe system operation
- Interfaces directly with the Noritz control board for accurate temperature feedback
- Helps prevent overheating by triggering protective shutdowns when needed
- Essential for maintaining peak efficiency and extending unit lifespan
- Direct drop-in replacement — no modifications required
Application
The ETHH002 exhaust thermistor is a critical safety and performance component in Noritz tankless water heating systems. It continuously measures the temperature of exhaust gases leaving the heat exchanger, relaying that information to the control board. A faulty or failed exhaust thermistor can trigger error codes, cause nuisance shutdowns, or — if left unaddressed — allow unsafe operating conditions to persist. Replacing a worn or defective thermistor with a genuine Noritz OEM part restores accurate temperature sensing and reliable system protection.
Why Choose Genuine Noritz OEM Parts?
- Engineered specifically for Noritz tankless water heater platforms
- Ensures compatibility with Noritz control board diagnostics
- Maintains manufacturer warranty compliance
- Delivers the same performance as the factory-installed component
Reviews
There are no reviews yet.