Why it matters to you
Greater Houston cooling loads swing from mild spring days to stretches of mid-90s summer highs, and a TXV adjusts refrigerant flow to match. A sticking or failed TXV can mimic a refrigerant leak, with poor cooling and an iced or warm coil, so accurate diagnosis matters before any refrigerant is added.
Practical guidance
Ask whether your indoor coil uses a TXV or a fixed orifice, and how the technician confirmed the diagnosis, typically with superheat and subcooling readings. TXV replacement requires refrigerant recovery and is work for an EPA Section 608-certified technician.