AC Repair Services › AC Expansion Valve Replacement
AC Expansion Valve Replacement in Spokane, WA
A thermostatic expansion valve, or TXV, is a specific type of metering device that modulates refrigerant flow based on the temperature and pressure at the evaporator outlet. When a TXV fails, it typically sticks open, sticks closed, or hunts erratically — each causing a different set of symptoms that are easy to misread. Proper diagnosis requires measuring superheat at the evaporator exit under stable operating conditions. Replacing the valve without that confirmation wastes time and refrigerant.
Spokane AC Repair Pros provides AC expansion valve replacement for homeowners across Spokane, WA. Call for a free inspection and a written quote before any work begins.
When to Call
When You Need AC Expansion Valve Replacement
- Your system's suction pressure swings up and down repeatedly during operation
- Superheat at the evaporator is reading near zero and the coil keeps icing up
- The system runs but superheat is extremely high and the compressor is running hot
- A new coil was installed with the old TXV and performance is still poor
How It Works
Our Process for AC Expansion Valve Replacement
- 1
Stable Condition Testing
We let the system run long enough to stabilize before recording pressures, so we're not chasing transient readings.
- 2
Superheat Measurement and TXV Confirmation
We measure evaporator superheat and compare it to manufacturer specs. A stuck or hunting valve shows clearly in those numbers.
- 3
System Recovery and Valve Swap
Refrigerant is recovered, the TXV is removed and replaced with the correct externally-equalized valve for the coil design.
- 4
Recharge and Performance Verification
After recharge, we confirm superheat stabilizes within the target range and the system holds steady through a full cycle.
Spokane Context
Why this matters in Spokane
Spokane summers frequently run above 95°F for extended stretches, which puts TXVs under maximum load for days at a time. Valves that are already marginal tend to fail definitively during those high-ambient periods rather than on a mild day.
Straight Talk
About pricing & scope
TXV replacement requires opening the refrigerant circuit, so recovery, vacuum, and recharge are part of every job. Scope can increase if we find a restricted filter drier or contaminated refrigerant once the system is open.
What This Fixes
Problems We See in Spokane
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