low pressure input side, but it really does not matter, because you have to pour in approx. 2 oz. of a/c pag or ester oil in there. That is if your refurring to an air conditioner unit.
if you mean the filter/drier, then looking at the engine compartment, the left side near the jack
Filter drier is used in an A/C system to take moisture out of the system. It is installed on the liquid line.
the drier side is called the rainshadow (leeward side)
A filter drier for a cooling only condensing unit will have an arrow pointing in one direction. This is because the refrigerant that passes through it will always flow in the same direction. A heat pump filter drier must have the ability to allow the refrigerant to flow through it in either direction and so a filter drier that is made for a heat pump will have two arrows pointing in opposite directions.
Liquid-line filter drier.
The filter/drier is under the hood, passenger side, along the inside of the strut tower. The cabin filter (if equipped) is under the dash passenger side. Only the three zone auto temp systems have a cabin filter.
The leeward side.
It has what is called a receiver drier........ It does not have a cabin filter.
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Low side service port should be next to or around the left front or passenger strut tower. Or around the filter drier.
falxsesfdsxbg
the drier side of a mountain