Please articulate your question so it is comprehensible .
Is it a new or an old window unit? Assuming your looking to refill it I will assume it is an old window unit which most likely uses R-22 refrigerant. R-22 is an ozone depleting refrigerant that is being phased out but should be available until 2010. There should be a label on the window unit stating which refrigerant is used.
That would depend on the type of refrigerant that is being used.
actually for the a/c have 2 units,one is the indoor unit and the other is the outdoor unit, and there will be a refrigerant gas flowing in between the two units (in the copper pipes) when the refrigerant comes to the indoor unit it comes with a cold format .and when the chilled refrigerant comes in the way of the hot air ,the refrigerant becomes hot and the air becomes cool. (there will be a blower inside the indoor unit to blow the air across the refrigerant pipe's and hot refrigerant now goes to the outdoor unit (i.e condenser), where the outside atmosphere air comes across the hot refrigerant so that the hot refrigerant becomes cool and the cold air becomes hot. so, the indoor unit is maintained in a cool temperature and the outside outdoor unit is maintained at a hotter temperature.
I have a 99 durango and the amount of refrigerant needed for the single unit and double unit are listed under the hood on top of the radiator.
The refrigerant pressures are dependent on the type of refrigerant.
Depend on what is the Horse Power of the split unit. For Example 1Hp split unit can go up to 0.2 refrigerant ton maximum. http://weightlosstreatnow.com
If you have a split unit - one with an outdoor condensing unit and an evaporator coil built into the furnace indoors, the refrigerant type will be shown on a label or engraved metal plate attached to the condensing unit. The amount of refrigerant will vary, depending on the diameter and length of pipe connecting the two units. Most window air conditioners have an hermetically sealed refrigerant loop and cannot be recharged in the field, although they may also list the refrigerant type on a data plate somewhere.
Many home AC units are sealed, and there is no way for a homeowner to add refrigerant.
ALL CARS MADE AFTER 1994 HAVE R-134A REFRIGERANT YOUR CAR USES THIS KIND AND IF YOU NEED TO KNOW HOW MUCH THERE IS A STICKER UNDER THE HOOD THAT TELLS YOU HOW MANY LBS OR OUNCES IT TAKES
Most Sunfires have a 'valve' on the A/C unit that you use to fill the unit with refrigerant. I say valve because it looks like a valve, but really its more of a nozzle. All vehicles from the mid to late 90's and on are forced by law to use only R-134a refrigerant. How much refrigerant your cars unit holds can be determined by finding the refrigerant charge label under your hood. It should be located near or above your A/C unit. The easiest way to ensure no mistakes or damages to your unit is to get a professional A/C fill. But the cheapest way is to buy a can of refrigerant (you can find these at most auto stores and even Wal-Mart) and follow the instructions given in the box. It will show you step by step how to add the refrigerant to your unit.
4.25 kg refrigerant required for 5 ton A/C
Many home AC units are sealed, and there is no way for a homeowner to add refrigerant.