Subcooling, Superheating

An area where professionals can discuss HVAC /R related issues and topics.

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Subcooling, Superheating

Post by Jandkaw » Sat Jul 21, 2012 12:52 pm

When determining the degree of superheat or subcooling where is the liquid and suction line temperatures measured, inside or outside?

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- Subcooling, Superheating

Post by jason12000 » Thu Aug 16, 2012 9:00 am

If you have a split system, you can measure 6" from the service valves on the outside. It's best to measure as close to the exit of the coil as possible, but this is acceptable. On package units just make sure you are getting the liquid line and not the discharge line for your subcooling reading. Oh, and put the door back up so your pressures read well.

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