Let me ask you guys this, on a fully functional car air conditioning system, the more freon you put in the cars system, does this mean it should blow colder air into the cabin? Or does the amount of freon not really mean much? Thanks...
2007-05-23 03:35:49 · 8 answers · asked by soobielover26 3 in Cars & Transportation ➔ Maintenance & Repairs
Basically i took the car to my mechanic in the morning when it was cold outside, he told me that it would be best if i brought the car in later when it got warmer because he wouldnt be able to gauge the coolness of the system. Does this make sense? Just fill it to the specs right? How much do freon jobs cost regurlarly?
2007-05-23 03:51:20 · update #1
No.
Be very careful. I have been in the A/C business for 31 years and what you suggest is actually dangerous. The way that A/C works is by controlling the amount of liquid refrigerant that enters the evaporator under pressure. As it expands, it allows the system to make the inside coil cold, and as it blows air against that coil, it cools the car.
The refrigerant, commonly and mistakenly called freon, then goes out to the condenser, and returns to the compressor.
If you add too much refrigerant several bad things will happen.
1. the inside coil freezes and becomes like a block of ice. It is similar to a refrigerator that needs to be defrosted.
2. now the liquid can travel through the system and get back into the compressor
3. liquid refrigerant cannot be compressed and it will slug the compressor and either break the connecting rod or burn out the motor.
The system must be charged properly with the correct amount of refrigerant, and the right way is to have a Gage on the system to monitor what is called the superheat. I won't try to explain that
Finally, automobiles started in 1983 to change the refrigerant that they use. Modern cars have refrigerant R-134a in their system.
Go to a pro.
2007-05-23 03:47:53 · answer #1 · answered by Bill 2 · 0⤊ 0⤋
Too much and it will not cool, too little and will not cool. In fact too much can cause damage to the compressor, I used to fix all the AC's in our ambulance service, and the best way to figure out how much freon is right ( ours were modified to add the box in back ) is to vacuum the system down to -20 lbs of mercury and sit for 30 min and make sure it's holding at -20 then attach the freon bottle and with vehicle off let the system pull the freon into the system until it equalizes, then unplug the switch on the condensor and jump it accross and start it up add a little more freon until the air is brrrrrr cold and make sure before you start vehicle that all blowers and controls are at the coldest setting before adding the freon.
2007-05-23 03:49:44 · answer #2 · answered by Anonymous · 0⤊ 1⤋
There is a specific amount that will deliver the best performance of the air conditioning system. Too little and it won't get as cold as it was designed. Too much and you damage the compressor. When there is the right amount the pressure ratio between high and low will be the specified amount.The actual coldest temperature that you can expect is listed in a dealer type shop manual, but don't do this test on a really hot day! Hope this answers your question.
2007-05-23 03:48:45 · answer #3 · answered by Robert D 4 · 0⤊ 0⤋
It only matters when it leaks out and you don't have enough. If the system is full, it is full and you can't put any more into it to make it colder.
But if it is NOT full, then the compressor will not function efficently and it won't get cold enough. Air does not have the same heat exchanging properties as freon.
2007-05-23 03:44:11 · answer #4 · answered by Anonymous · 0⤊ 0⤋
a\c should only be serviced by a qualified tech. Over charging the system can damage the compressor and it will actually blow warmer. On newer r134 systems under charging by 1-3 oz actually works better. The system is designed to work at certain pressures at over charging or under charging will effect performance
2007-05-23 03:52:33 · answer #5 · answered by Chuck 1 · 0⤊ 0⤋
Your mechanic doesn't know anything about A/C. It's all done by pressure readings as stated above.
And cars started switching over to R134 in 1993, not 1983.
2007-05-23 04:53:57 · answer #6 · answered by Anonymous · 0⤊ 0⤋
first of all freon is only available through licensed ac tech/refrigerant is different through weight of product/newest is different material than 4 years ago
2016-05-20 22:38:20 · answer #7 · answered by ? 3 · 0⤊ 0⤋
design calls for set amount...more isnt better. like coolant 50/50 antifreeze/water works better than 100% antifreeze go figger...
2007-05-23 03:38:53 · answer #8 · answered by Anonymous · 0⤊ 0⤋