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Generally: you should use someone that is highly recommended within a circle of peeps that you know and trust that is licensed and has equipment to check such conditions.
However: There are indicators that anyone should know that has any interest in such a matter as yours.
#1. Use a highly known accurate temperature thermometer to record the air temp. going into the units return air filter grill and write down your reading. Then go to the outlet register grill where it blows air out after being conditioned and see what that temperature is and write it down. Be patiant. And try to hang the thermometer by a string or something and don't hold with hand. Give it time to stablilize and settle to a firm reading. Record the temperature of the room itself or rooms and write down. subtract the inlet and outlet air temperature readings and this will give you what we know as TD or Temperature Difference of the air going through your treatment unit. some factories have one and some have another recommendation. but all in all you should see 15 degrees TD. Now look at the room avg. temperature. are they all about the same or widely different? If the TD is very small then go out to your unit and fell the air blowing out of it into outside air. Should be hot!!!!,,, if not,,,, just warm or so,,,, Bingo!!!!!! You got refrigerant problems.
If not hot at all but just blowing ouside air around , your compressor may not even be running. ( that pumps the refrigerant charge in your system ). Bingo!!!!!!!! You most likely have electrical problems. Either case, you know you need a good technician and don't have to feel foolish about calling one over nothing.
Hope this helps: Jimiwane
What else can I help you with?
How do you get the compressor to run on a 2001 Pathfinder with low freon?
You do not want it to run on low freon as it will burn itself up. There is a low pressue switch that tells it not to run if the freon pressure is below a certain point. To make it run; add freon.
How do you know if you are low on freon?
The AC cycles itself on and off rapidly, and the air blows less cool.
1996 intrepid 3.3L not low on freon-What sensors cause ac compressor to turn off?
low on freon
Where are the high and low freon valves on ford 460 e350?
The high and low Freon valves are located on the air conditioning compressor. Use the low Freon valve to recharge the air conditioning system.
Adding freon to 1999 Chevy V8 4x4?
You can add Freon to your 1999 Chevy cooling system through the low pressure port. Connect your Freon bottle to the low pressure port and release the Freon into the system.
What does low refrigerantac light on cadelac mean?
you are LOW on freon
Will adding freon make your ac colder?
ding freon will make it colder, only if freon is low. if freon is low you have a freon leak so adding will be wasting time and money. more likely to need a new ac temp thermostat, which is no big deal to change
How do you lose volume in freon other than a leak?
A leak is the only way to loose volume of the freon charge. Freon is in a sealed system and it does not get used up. If your system is tight the freon will last forever. However a restriction in the freon lines can cause the freon pressure on the low side to look like it is low but the freon is really stacking up in the condensor.
What side do you put freon on?
Low Side
How do you read R22 gauges?
To read gauges,you must know which is low side/high side,if you know that, then depending on which freon you are using,you read the pressures matching the temp,for example,looking at the low side gauge(blue gauge) look at R-22 freon,you will see that 40 degrees,will equal to 70 psi
What side do you put freon in on out unit high or low side?
Freon goes into the low pressure side of the air conditioning system. The attachment from the gauge used to put the freon in will only attach to the low pressure valve so it would be pretty hard to do it incorrectly.
Is it normal for the freon of the automobile ac to be low with out a leak?
No
