In HVAC R22 gas are using for cooling but why oil are using
& which type of it is???????/

Answer Posted / mohammed umar

OIL USING FOR THE PURPOSE OF MOVING PARTS IN COMPRESSOR.
THAT OIL NAME IS MINERAL OIL.NOW A DAYS R22 LEAVING IN THE
WORLD NEW GENERATION AND ECO FRIENDLY GAS LIKE R410 AND
R407C AARE UPCOMING GASES, ITS USING THE SAME TIME OIL
CHANGED ITS NAME POLYESTER OIL

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