Changing an evaporator coil, and installing piston, instead of TXV

HVAC GUY
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Oct 28, 2026
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Changing an evaporator coil on a Goodman air handler. Converting TXV to piston. Drier is in the condenser
Take
out
this
TXV.
Vacuum.
The vacuum, you can see here,
I'm not sure you can see the,
I'm below a thousand microns,
but I got a ways to go.
I have pulled the vacuum down to 500 microns
and started the system up and charging it.
Factory charge calls for eight pounds, 12 ounces.
I don't know if you can see that.
I've already added just a little bit more
and head pressure is just slowly climbing.
I'm gonna watch it for a little while
and see how it does.
All right, we seem to have stabilized right about here,
so I'm going to keep an eye on this just a
little bit longer. We're fixing to pack up and go.
Let me stick a fork in this one. It's done.
