How I Diagnosed a Bad TXV Without Guessing

Customer complained the system wasn’t cooling properly. At first glance, it looked like it might be low on refrigerant, but the numbers told a different story. In this video, we gather data, check pressures, superheat, subcooling, and airflow to determine whether the problem is low charge, restricted airflow, or a failed TXV. This is Part 1 of a 2-part series. Part 2: We’ll recover the refrigerant, replace the TXV, evacuate the system, recharge it, and see if the diagnosis was correct. 🔧 Licensed HVAC Contractor 📍South Carolina 📺 JustinTimeHVAC