Silly question...

[Poodle Head Mikey]

An easy way to satisfy everyone (including yourself <g>) is to pump down the unit, as you describe, replace the indoor TXV, and then install a suction line filter drier. You have installed a drier - because the system was open - And you've avoided having to reclaim all the refrigerant. <g>

If you ever have to remove the refrigerant for the outside unit - Then you can replace the liquid line drier. <g>

And yes: you Can leave the suction filter drier installed indefinitely. <g>

PHM
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I know that whenever I break into an hvac system to do a repair or replace a component, I need to replace the filter dryer. But what if that filter dryer is in the condenser like many manufacturers do (like Goodman and Lennox) to name a few.

So if I pump down the system to replace an indoor TXV, do I need to recover the gas to replace the filter dryer? Assuming there is no temp split across the dryer. That could be pretty costly to the customer on some of these larger R-22 systems.

Thoughts? Comments?

[DavidDeBord]

None that I know of have filter driers. Now fine screens are a different story. There are a few in every system.

And they have no issues Pec?

[pecmsg]

And they have no issues Pec?

"Installed Properly according to manufactures recommendations"

NO