520 Trestle Place
Downingtown, PA 19335
(610) 873-1244

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for berwyn, pa


Map of Berwyn PA
Brian B.

Brian B.


Job Checkin

Pump Down Refrigerant and remove the old TXV. Install a new TXV Metering Device. Pressure test system for 10 minutes at 300 PSI of Nitrogen to ensure there are no leaks. Perform a triple evacuation on system. Release Refrigerant to the entire system and test operation. Add additional Refrigerant to system if needed. Complete AC Tune Up on system. Please be advised that there may be further issues that are found after the TXV is replaced that cannot be diagnosed at this time due to the restricted TXV. Replace txv, pump system down into the outdoor unit. Removed failed txv. Pressure tested to 350 psi for 5 minutes. Evacuated system to 425 microns, held for 5 minutes. Open refrigerant valves. Started air conditioner, balanced refrigerant charge by sub cooling, checked operation and temperature drop across coil.