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How do I go about charging a condensor unit after repairing a leak

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Hey now don't treat me like the enemy or anything, but by law (section 608 EPA) you have to get someone EPA certified to do this. If you're unit uses R22 refrigerant it may be a bit costly, like the auto refrigerant being discontinued a decade ago, now the home stuff is no longer produced causing the price to skyrocket. Please don't shoot me the messenger, but you have to call somebody reputable. Hope all goes well

Posted on Jul 13, 2009

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Posted on Jan 02, 2017

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If your referring to the amount of refrigerant required to add to system, there is no fixed quanity.. It depends mainly on the diameter & length of piping between outside unit & your furnance. A good installer will mark the amount in Lbs/oz's they used at install on a label somewhere near access valves or unit tags. If your short of gas you have a leak somewhere which will need repair. Dispite what many believe, The Freon should last forever as long as a leak does not exist. If youknow how to use an amp meter you can charge unit until condensor amp draw is close to amp rating on tag bit this is not most effecient nor best way to charge a system & is only approximate when outdoor temps are 75-80 deg & building is about the same indoors. ( system is under moderate load)

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Chances are you got it fixed in the winter and they didnt think to check your A/C condenser. The Condenser sits next to or in front of the radiator cooling unit. THey get punctured and leak freon. The heat being blown is indiciative that your blower and control unit is fine. If the repair was done by a reputable body shop or the dealer they should have checked it. If they havent checked it then they failed to do their job properly and you should have it reviewed. A lot of times they will see the radiator is undamaged and overlook the condenser. Take it aback to the dealer and have it reviewed. Tell them to specifically check the condenser unit

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1 Answer

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Gas smell??? Freon doesn't smell like most common gasses like natural gas or propane. I believe the unit is servicable but i'm not sure you could get an A/C company out to repair an A/C of its size. If it still blows cold air I would say the problem isn't coming from your A/C unit, if there is a noticeable leak (you can smell it) in the condensor it would dump most of the freon fairly quickly. If it's not blowing cold air I would suggest replacing it, not sure if finding the leak, and getting out your oxy/acetaline torches would be worth the trouble.

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sounds like the units compressor is shutting off. this could be caused by being low on freon, or a dirty condensor coil. the condensor coil is where the hor air exits the unit. make sure it is clean, free of lint/dirt. if it is clean, you will need to take it in to a repair shop and have the coolant leak found/repaired and then recharge the unit.

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Your pressure sound pretty good. I would check the thermostat and the relay on the compressor. If you are getting no frost on your coil, that is usually a tall-tall sign of a bad compressor then it would be better to just replace the unit.

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not familliar w u unit, but ref is a redundant operation. the inside blower (fan) is not running but mabe it is? and cant move air because the coil is blocked (debris dust)?.someone will dissasemble (expose) u indoor unit and that where troubleshooting begins. that takes a little mechanical knowledge n if u have what it takes?, than google the mfr & model # to obtain a service manual. all u answers lie whithin such manual.

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1 Answer

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Well, if the mechanic is right and the only current leak is the condensor, I'd go ahead with it... The dryer is a normal item to replace in your case, because the system was leaking for so long... Only a drop of moisture in an A/C system can cause more harm than you could imagine. The dryer takes care of any moisture that could seep in but after the system has been open for a while a new dryer is needed because the dessicant (drying agent) becomes saturated and cannot absorb any more moisture. "Increased pressure" will not cause a problem unless you have another slow leak somewhere else than the condensor. If you really want to find out your odds on this, find a knowledgeable A/C technician with a good ultrasonic leak tester (many good service garages have this tool, which can detect a slow leak as little as 1/8 OZ a year), but you have to be sure the tech knows how to use the tool because without knowledge/experience it is quite useless. If there are no other leaks, go ahead, and even if there is another smaller leak, fixing it at the same time while the system is being serviced for the condensor is the way to go. Instead of having another bill for hundreds of dollars later for a 2$ o-ring or a loose fitting, they probably will charge you only a couple of dollars for the added work. A lot of the labour charge on A/C work is spent on emptying the system, vacumming it for 30 minutes after the work is done to remove all traces of moisture, and refilling the system. Better do it all at once, and save the labour part of things.

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1 Answer

Condensor?


Hi, Sounds like the freon has leaked out of the unit and its time to call a repair company. The leak is probably the source of the oil. A service tech will find the leak, repair it if possible, recharge the unit and you will be cool again. Sounds like there is a lot of oil so the leak may be very obvious. Good luck. There is an ad on this site to find a local repair service company or you may want to ask a neighbor for a reputable company. kstfas

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