Freon capacities how much do i need for this unit if it was completely empty

Look on the label that has the voltage ratings. It will be there

most cars have it printed on decal the body under hood it will say 134-a capacity 2.3lb ,when adding Freon allways follow detailed instructions .if system has been emptied you may have to use Freon with oil in it

If you're doing it yourself make sure to buy a gauge with the freon and just follow the gauge and keep filling until it's in the green lines. If it's completely empty one large can should do the trick

If the system is empty, it can take as much as 32 ounces of refrigerant (R134). If the system has been allowed to become empty, make sure you use the correct PAG OIL with the refrigerant, and use a proper refrigerant gauge when recharging to avoid overcharging the system.

If the system is empty and you have pulled a vac, it holds around 2 lbs which is 2.5 cans. The high and low gauge pressures tell you when it is full.

There should be a sticker on the hood, radiator support, or hvac housing with the capacity.
If the system is empty and you have pulled a vac, I would start with 4 cans and then add as needed.

There should be a sticker on the compressor or accumulator telling you the freon capacity and oil requirement.
I would guess it would take about 48 oz or 4 cans if it is empty and you vac the system.

There should be a r-134 sticker located under the hood, inner fender well, dryer, radiator support, one of these locations

Hello
It wouldnt be cans of freon it would be ounces.Usually about 2 small cans of freon.

No. Water is not what makes an AC cold. It is a refrigerant gas called Freon. Water is only a by-product of an AC system caused by condensation. If your AC is not blowing cold air the system might be either low on Freon or completely empty due to a leak. It should be checked out by a certified AC specialist.