How to Check Superheat

Name: Prime Cool
Address: Wagholi-Shirur Corridor, Pune, Maharashtra, 412207, IN
Telephone: +917507408461
Price range: $$

Superheat is measured on systems with fixed orifice metering devices (like capillary tubes) to check if the evaporator is loaded properly without liquid floodback.

Formula & Method

Superheat = Suction Line Temp - Saturated Suction Temp (PT Conversion)

Connect manifold gauge to suction line service port to read suction pressure.
Convert the pressure reading to saturated temperature using a PT chart.
Attach a pipe clamp thermocouple to the suction line near the service port to read suction line temperature.
Subtract the saturated temperature from the line temperature. Target is typically 8°F to 12°F.

Need professional assistance?

Saurav Temgire (Lead Engineer at Prime Cool) coordinates rapid-response HVAC, Chiller, and Cold Storage maintenance along the Wagholi–Shirur corridor. Call +917507408461 to schedule a visit.