Filter Sensors are devices designed to measure return duct pressure and temperature readings. These measurements provide valuable insights into your HVAC system by:
Tracking air filter life % to help optimize replacement timing
Supporting system performance analysis through return air temperature data
Completing the deltaT analysis, which compares supply and return air temperatures to evaluate system efficiency
Where Are They Installed?
The Filter Sensor is placed inside the return air vent, behind the air filter. From this position, it can accurately monitor the air pressure and temperature as the system operates.
How Do I Use Them?
Once installed, Filter Sensors work automatically, giving you the information needed to maintain your system. Here’s how you benefit from them:
Monitor Air Filter Life %
The pressure readings show how much airflow is being restricted by the filter.
As restriction increases, the sensor calculates the remaining filter life, helping you replace it at the right time.
Track System Performance
Return air temperature readings help diagnose whether your HVAC system is cooling or heating efficiently.
This data combines with supply temperature measurements to complete deltaT analysis, a key performance metric.
Take Action When Notified
Replace the air filter when the sensor shows that its life is low.
Use temperature insights to identify possible system inefficiencies early.
