A HVAC thermometer probe is a device used to measure the temperature of air, water, or other liquids. It is an essential tool for any HVAC technician, as it allows them to accurately measure the temperature of the air or liquid in order to ensure that the HVAC system is functioning properly. The thermometer probe is typically inserted into the HVAC system, and the temperature is then read off of the device. It is important to note that the thermometer probe should be calibrated regularly in order to ensure accuracy. The thermometer probe is a simple yet effective tool that allows HVAC technicians to accurately measure the temperature of the air or liquid in order to ensure that the HVAC system is running properly. It is an essential tool for any HVAC technician, and its accuracy is paramount to the proper functioning of the system.