

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The Source1 s1-1896721 is a coil temperature sensor designed for use in HVAC systems where accurate refrigerant coil temperature monitoring is critical. This sensor covers a wide operating range of -22 to 221 degrees Fahrenheit, making it suitable for both heating and cooling applications. The 21.6-inch lead gives technicians enough flexibility to route the sensor wire through equipment cabinets and connect to control boards without stressing the connection points. Coil temperature sensors like the s1-1896721 play a key role in protecting HVAC equipment. The sensor continuously reports coil temperature data to the system control board. That data is used to prevent freeze-ups on evaporator coils, protect against overheating on condenser coils, and help the system maintain efficient operation. When the sensor fails or reads out of range, the system may go into fault mode, display error codes, or shut down entirely to protect the refrigerant circuit. Replacing a faulty coil temp sensor with a direct OEM-equivalent part like this one restores proper system diagnostics and control logic. The s1-1896721 is a Source1 branded replacement part, which means it is built to meet the performance standards of York equipment. HVAC technicians servicing York residential and commercial systems will find this sensor is a reliable, drop-in replacement. It is commonly used during diagnostic calls where a frozen evaporator coil, short cycling, or fault code points to a failed temperature sensor. Keeping this part on the service vehicle reduces truck rolls and speeds up first-visit repairs. Proper installation requires inserting the sensor into the designated coil clip or bracket and connecting the lead to the matching harness on the control board.
The Source1 s1-1896721 coil temperature sensor delivers accurate, wide-range temperature monitoring with a generously long lead, making it a dependable replacement for HVAC technicians servicing York equipment.
Thanks for subscribing!
This email has been registered!