Rinnai Air Thermistor for 26iV / HD50i - (P26IV-KITH)
The air thermistor on a Rinnai 26iV or HD50i continuous flow water heater monitors combustion air temperature, feeding that reading to the control board so it can manage combustion settings correctly. Accurate readings here matter for both safe operation and efficient performance — if the sensor drifts or fails, the control board is working from bad data.
A faulty air thermistor typically shows up as incorrect combustion settings, erratic temperature behaviour, or confusing fault codes that don't point clearly to the actual cause. This genuine Rinnai replacement, made to the original specification, restores accurate air temperature monitoring and lets the control board manage combustion the way it was designed to.
⚠ Important: This is an internal component of a gas-fired appliance and must only be installed by a Gas Safe registered engineer. Always isolate the gas supply and electrical power before starting work.
Key Features & Benefits
Genuine Rinnai Part: Made to OEM specification for a correct fit and accurate readings.
Accurate Air Temperature Monitoring: Feeds the control board the reading it needs for correct combustion settings.
Restores Combustion Performance: Helps the system run at its intended efficiency.
Direct Fit Replacement: A like-for-like component for the 26iV and HD50i models.
Built for Appliance Conditions: Designed to withstand the environment inside the combustion system.
Ideal For
Rinnai 26iV continuous flow water heaters.
Rinnai HD50i gas water heaters.
Gas engineers servicing Rinnai appliances.
Temperature sensor replacement work.
Common Problems This Part Will Fix
Fluctuating Water Temperature: Restores accurate combustion air readings feeding into temperature control.
Erroneous Sensor Readings: Replaces a thermistor that's giving the control board incorrect data.
Temperature Sensor Fault Codes: Resolves error codes linked to the air thermistor.
Inconsistent Burner Performance: Restores the accurate input the control board needs to manage combustion properly.
Why Buy This Product?
If your 26iV or HD50i is showing erratic temperature behaviour or throwing fault codes that don't clearly point to a cause, a faulty air thermistor is worth checking — the control board can only manage combustion as well as the data it's receiving. This genuine part restores that accuracy, fitting and performing exactly as the original sensor did.
Order the Rinnai Air Thermistor for 26iV / HD50i online today.
Specification
Rinnai Air Thermistor for 26iV /HD50i – Genuine Replacement Specification
Manufacturer
Rinnai
Product Type
Air Thermistor / Temperature Sensor
Part Number
P26IV-KITH
Compatible Models
Rinnai 26iV, HD50i
Function
Measures Combustion Air Temperature
Application
Continuous Flow Gas Water Heater
Installation Requirement
Qualified Engineer Recommended
Features
Rinnai Air Thermistor for 26iV /HD50i – Genuine Replacement Features
Genuine Rinnai Part: Made to OEM specification for a correct fit and accurate readings.
Accurate Air Temperature Monitoring: Feeds the control board the reading it needs for correct combustion settings.
Restores Combustion Performance: Helps the system run at its intended efficiency.
Direct Fit Replacement: A like-for-like component for the 26iV and HD50i models.
Built for Appliance Conditions: Designed to withstand the environment inside the combustion system.
Questions
Reviews
Rinnai Air Thermistor for 26iV /HD50i – Genuine Replacement Reviews
