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Where is the A/C low side recharge fitting - Heating & Cooling

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  • t1m130
    t1m130 May 11, 2010

    what is the make and model of the unit is it a split system or a portable system

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On what???car or window A/C or central A/C on a car its usually near the accumulator and if lucky has a blue cap on it w/ a snap recharge fitting on it hi side is a red cap, on window units theyre sealed and you need to install a saddle-tap,on central A/C's the low side is the larger of the two lines entering the compressor housing outside,usually the recharge fittings are outside near the unit

Posted on Jul 30, 2009

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Mazda6 ac recharge valves


the correct one should be smaller, and your recharge hose should be only able to connect to it. the smaller fitting is the low side, and the larger fitting is the high side. recharge only to the low side. the high side is used by technicians with elaborate ac manifold guages to monitor success. these guage kits can be bought at harbor freight for about 55 dollars,and give a better recharge,as you can regulate pressure as not to overfill, which lessens the cooling

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Please show me the line where I recharge the freon on 96 geo metro. I can't find the low side


Typically the fitting on the recharge kit will only fit on the low-side line. Here is a good website that explains the recharge process:
http://milkyourmoney.com/2009/05/27/diy-how-to-recharge-your-cars-air-conditioner/

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low side should be on or near the accumulator whch is on passenger side

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1 Answer

Need to charge airconditioning system, and the recharging kit doesn't fit on.... how and what do you use to recharge on 5.7 L engine, 1997 1500 4x4 chev pick up


the recharge kit will only fit on the low side fitting which is the smaller fitting on the larger lines/hoses. If it doesn't fit on the fitting you have tried than you are probably trying to put it on the high side fitting which is the larger fitting on the smaller lines/hoses. I think the low side fitting is on the receiver drier on this model which is the canister looking thing back by the passenger side of the firewall.

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1 Answer

Need to recharge the a/c in a 2007 Saturn Vue. Where can I find a diagram that shows the different hoses and lines? Or which hose or line do I use for the Freon?


you always recharge on the low side. The low side is the larger lines/hoses. the high side is the smaller lines/hoses. The low side fitting on the a/c system is smaller than the high side fitting. this is so that the low side and high side can not be hooked backwards accidentally. The fitting on your can of recharge will only fit the low side fitting on the a/c system.

To find the low side fitting on your a/c system to recharge it simple follow the low side line/hoses (the larger ones) until you see the fitting which usually has a plastic cap over it. Follow the instruction on the can of recharge and you should be good to go.

If you have any other questions I'd be more than happy to answer them.

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1 Answer

How do i tell the low side from the high side on the ac system


The low side has a black cap covering the recharge valve. Even if you tried to place the recharge hose on the high side, it will never fit and is designed for the use of a totally different hose fitting.

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1 Answer

2007 Ram Truck: where is low side of ac to recharge in 2007 dodge ...


The Low Pressure Side connector will be smaller than the High Pressure Side connector so the refill hose will fit properly only on the Low Pressure Side.
Read more: How to Recharge Air Conditioning with Freon in a Dodge Ram | eHow.com http://www.ehow.com/how_4484569_recharge-air-conditioning-freon-dodge.html#ixzz0uLXJnwvE

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1 Answer

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The port on the accumulator is the low side. The high side port is smaller than the low side. The low side port is the one that gets cold when the compressor is running.

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2 Answers

I'm trying to recharge the A/C in my 04 PT Cruiser. I can't seem to find an accurate answer to which hose is the low and which is the high side. I have a large diameter hose and a small diameter hose. The...


The low side connectors are diffrent from the high side, you would not be able to connect it anyways. The high side has a bigger port that the low side, and it would not fit anyways.

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3 Answers

R134a recharger nozzle won't fit on low pressure service port.


The low pressure port on the 2003 grand am is actually behind the engine, near the firewall on the passenger side. Good luck getting your hose down there though, I ended up buying an extension hose.

Jul 24, 2009 | 2004 Pontiac Grand Am

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