What is the history of A/C in FMTV vehicles?

[Reworked LMTV]

I'm in the process of finally installing A/C in my M1088. Just curious about the history of A/C in FMTV's. I know that the original units were rare, but which vehicles got them? Just the HIMARS? Do newer FMTV's get these units as standard now, given the armor?

I have been looking through the TM's and have found no reference to them. Anyone know where this info is? I am putting my GEN 2 in now and wanted to know if this is an expansion valve system and if this needed to be added? Maybe valve is already inside unit?

Thank you in advance!

 

[Ronmar]

I believe it is txv and the valve is in the evap unit…