air conditioning recharge?

How do I recharge my home A/C unit. I have the equipment. I just need to know the proper hookup for the mainfold.

Answers:
the blue gauge on the low side and the red gauge on the high side you also need R22

Other answers:
well, don't you charge the discharge side of the compressor? I think so. you need the connections and oh yeah, a license.
well, don't you charge the discharge side of the compressor? I think so. you need the connections and oh yeah, a license.
Because of concern for the ozone due to - among other things - reckless use of refrigerants, you don't unless you have the EPA certification to buy and document the use of the Freon that will go in your air conditioner. You will need to call a professional. Not the answer you wanted, I'm sure, but it's the law. Actually a pretty good law for those concerned about the environment.
You need an EPA license to charge any refrigerant device regardless of the type of refrigerant. You also need the license to purchase refrigerant and equipment. If you do not know what you are doing you can overcharge your system and at the least cause it to not cool properly OR cause damage to the equipment which could end up causing the replacement of the condensing unit or A coil or both.

It is less expensive to have a qualified licensed pro. check out and repair your equipment than do it yourself and ruin the equipment or get slapped with an EPA fine.
If you don't know how to hook up your manifold Gage set, how do you know that it is low on refrigerant? There are several things to check before adding refrigerant. Filters, air flow, etc. Refrigerant is not a fix-all, and it is easy to overcharge a system if you are not a trained professional. I once ran a service call and had to remove 20 lbs of refrigerant from a residential system because someone just "added some refrigerant". I was astonished that it still ran when all was said and done. Trust me, it is better left to someone who knows what they are doing. And yes we as HVACR people still have to recover R410a refrigerant. We cannot just vent it into the air even though it is "environmentally friendly".
Not much help from these guys- People are reluctant to call HVAC man- because so many of you are Rip off artist.

Is there a site glass to check freon, if so look at it and learn what it means.
I have to agree with Tina . there are so many variables in determining the proper refrigerant charge . but assuming everything is working properly you will need a set of gauges and a digital thermometer to find out your superheat is. once you know what the super heat is that will determine the amount of refrigerant that's added or removed. as for the gauges the low side or blue hose connects to the suction line and the red hose connects to the liquid line and the yellow to the refrigerant tank.
also i would like to say that if you really need a recharge you most likely have a leak somewhere & suggest getting that fixed
because it isn't normal to keep adding refregerant.
and as for BILL when was the last time you hired an attorney?
they are the biggest rapists in the world
Purchasers of R-134a, R-410A, and refrigerant supplies do not need a license.

Sounds like you should just get your leak fixed.
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