You can replace your own thermal expansion vale on your Ford F150, F250, F350 or Doge, Ram of Chevy.
How to replace a thermal expansion valve.
Links to tools
Vacuum Pump: https://amzn.to/3LNkydQ
AC Manifold Gauge Set: https://amzn.to/3z3UnYC
Under Hood Light: https://amzn.to/40c5w5D
Thermal Expansion Valve: https://amzn.to/3JNL6ci
Cans of R134A: https://amzn.to/40fAHNw