Carrier 33ZCT55SPT Space Temperature Sensor with Override

The Carrier 33ZCT55SPT Space Temperature Sensor with Override is a Carrier sensor for HVAC repair and replacement work. Use it when the part number 33ZCT55SPT and the listed specifications match the equipment being serviced.

The 33ZCT55SPT Carrier HVAC Control space sensor contain a zone temperature sensor that is selectable to two different thermistor temperature curves. An internal jumper is used to select the desired thermistor resistance curve at the time of installation. The T-55 Space Temperature Sensor with Override is designed to complement any interior decor. The sensor has the following advantages over conventional thermostats: Elimination of drift and calibration Reduced maintenance cost Accurate temperature sensing Features Sleek, low profile complementing any interior decor Push-button override Accurate temperature sensing Reduced

Key Specs

• Application: Temperature Sensor
• Sensor Type: 10K Ohm Thermistor
• Height: 4.51″
• Width: 2.75″
• Product Type: Sensor

Fitment Notes

Captured equipment fit data references models including 38APD0305 A, 38APD0406 A, 38APD0506 A, 38APS0305 A, 48HCDA041A, 48HCDA043A, 48HCDA045A, 48HCDA046A, 48HCDA053A, 48HCDA055A, 48HCDA056A, 48HCDA063A. Verify the complete unit model and service manual before installation.

Expert Verdict

Reviewed by the SuperArbor Pro Desk: choose this part when the existing component label and unit documentation match 33ZCT55SPT and the spec set above. It is best suited for targeted HVAC service repairs where exact fitment matters more than broad universal compatibility.

FAQs

What is the Carrier 33ZCT55SPT used for?

It is a sensor for compatible Carrier HVAC equipment. Match the part number 33ZCT55SPT and the equipment service literature before ordering or installing.

Which specs should I verify before purchase?

Verify the spec set shown for this part: Application: Temperature Sensor; Sensor Type: 10K Ohm Thermistor; Height: 4.51″; Width: 2.75″; Product Type: Sensor. The replacement should match the existing component and the unit documentation.

How do I confirm this is the right replacement?

Compare the part number 33ZCT55SPT, the sensor description, and any unit model references with the original component and the service manual.

Which equipment models are referenced in the fit data?

Captured fit data references models such as 38APD0305 A, 38APD0406 A, 38APD0506 A, 38APS0305 A, 48HCDA041A, 48HCDA043A. Treat this as a fitment aid and verify the complete model list in the equipment documentation.

Who should install this HVAC component?

A qualified HVAC technician should install and test the sensor. Disconnect power first, follow lockout procedures, and confirm safe operation after replacement.

Safety and Installation Notes

Disconnect power before service. HVAC electrical and combustion-related components should be installed and tested by a qualified technician. After installation, confirm wiring, mounting, airflow or fluid routing as applicable, and normal system operation.