How do you add Freon to your central air conditioner unit?
12 Other Users Have The Same Problem
Comment by cherry4calif, posted on Aug 16, 2008
Central A/C unit freezing over. Filter is new so other ideas is needing freon. Can I do that myself?
Comment by krsenterpris, posted on Jul 18, 2008
have a tappan central air unit how do i add freon
Comment by edelyssa, posted on Jun 25, 2008
I have a home portable Delonghi Air Condition. Everything works except for the cool air is not coming out. I think it needs to charged the FREON? WHat do I need to do this myself? I called around for repair and asking me $180 to charged the freon. This is too much. I might just have to buy a new one.
Comment by lvcta, posted on Jun 17, 2008
My home AC was low on freon. I had a cert. tech charge the system back up to where it should be, but he never checked for leaks. 4 weeks later, same problem. I used soapy water to locate the leak myself, which is on a copper pipe just outside the condensor coils. My question is, is it ok to solder up the leak without removing the freon from the system, or would this be dangerous?
Comment by Guest, posted on Jun 11, 2008
a/c needs topping of freon. Is this noram and how expensive is it?
Rating: 0%, 0 votes
Was this solution helpful? Show your Appreciation by rating it:
Was this solution helpful? Show your Appreciation by rating it:
Rating: 0%, 0 votes
Was this solution helpful? Show your Appreciation by rating it:
and the right pressure at low side is 68.5 psi, this will give you 40 degrees in the evaporator of the unit.
Certainly you have to use special manifolds to check pressure, and special equipment to perform a leak solder, and, for that guy asking if he can solder a leak with the refrigerant pressure present, NEVER EVER ATTEMPT TO DO THAT IS VERY DANGEROUS INDEED, YOU HAVE TO RELIEVE ALL THE REFRIGERANT BEFORE YOU ATTEMPT TO MAKE ANY SOLDER IN THE SYSTEM, IN ADDITION, THE REFRIGERANT MIXED WITH OPEN FLAME PRODUCES TOXIC FUMES THAT CAN BE VERY DANGEROUS OR FATAL IF INHALATE IN MEDIUM CONCENTRATIONS.
Was this solution helpful? Show your Appreciation by rating it:
Rating: 0%, 0 votes
Was this solution helpful? Show your Appreciation by rating it:
Was this solution helpful? Show your Appreciation by rating it:
Rating: 0%, 0 votes
Another thing, I saw someone say he didn't know what the guy was talking about with the Nitrogen. When we checked for leaks we pumped the refrigerant down to the compressor and trapped it there. Then we pressurized the lines with Nitrogen and checked our leak that way. Nitrogen is an inert gas, it doesn't carry condensibles (moisture) and it can be vented back off into the atmosphere legally as our atmosphere is mostly Nitrogen anyway. with this method we didn't have to worry about the refrigerant after we found the leak and saved as much as possible.
Was this solution helpful? Show your Appreciation by rating it:
In order to repair leaks you HAVE to remove the refrigerant first!!! Think about it. What do YOU think will happen when you start heating a soder joint that has pressure behind it ? Its going to blow all of your solder out of the joint. Ask any service tech as we all have tried it when we first started out in the business. It did not work for us and it won't work for you either!!! You may also want to consider that we call them solder joints but they are not made with plumbers solder they are made with as stated in an earlier response with silfos. You can not mix the two. In other words one will not stick to the other no matter how much heat you throw at it. In regards to leaks....Leaks happen and they are sometimes very hard to find. They are the curse of every tech. You can spend hours looking for them. I have 4 different leak detection sytems on my rig. They all cost big $ and they all find leaks but they also all have their strengths and weaknesses. But in order for a system to hold a charge you have to have a tight system...NO Leaks. So the question is how do you fill it ? On a residential AC you will have 2 schrader valves at the condensing unit. That will be the part that is sitting outside with the fan in it. The schrader on the smaller line is the high side access. Your red hose goes on that one. The schader on the larger line is the low side access. Your blue hose goes on that one. So now what do the numbers on the manifold tell You. Exactly nothing unless you understand that it takes alot of time and training to understand what is going on in a modern air conditioner. There are a lot of so called techs that do not understand what is going on. If you called someone out to repair your system and it is not working right. Call them back and insist that they do it right. It's tough out there but we want happy customers. Look at it this way...sometimes it might be better to have an idiot that knows a little bit about somthing working on your equipment as opposed to an idiot(that would be you) that knows nothing at all.
Was this solution helpful? Show your Appreciation by rating it:
Rating: 0%, 0 votes
Was this solution helpful? Show your Appreciation by rating it:
Was this solution helpful? Show your Appreciation by rating it:
Rating: 0%, 0 votes
Was this solution helpful? Show your Appreciation by rating it:
Rating: 0%, 0 votes
Was this solution helpful? Show your Appreciation by rating it:
First you must throw the breaker before you dissemble anything to find where you need to fill your unit. You may not need to dissemble anything in some cases. But you must be on the low side pressure line. The smaller high pressure side can go up to 500 pounds or more pressure. I know a person can be injuried easily. I know of a man here in our area who connected to a high side line and the freon can blew up and removed his nose. So like the man above said strict guide lines must be followed to keep you safe. The low side line is usually about 40 to 60 pounds. This line is used to add freon. You can't just use any freon. You must use the freon made for your unit and most central units are the same. But everything is always subject to change so some study on your part would be worth it for you. Ask around talk to people and get some advice.Someone who has been there can assist you very much. Normally the unit will be turned on running at full speed to fill the unit with freon. And when a certain amount is reach or a certain low side pressure that means add no more. To much pressure on the low side can cause trouble. For most people a qualified service man is far better. But for some it is a piece of cake.
Was this solution helpful? Show your Appreciation by rating it:
Post a New problem for Whirlwind -Air Cooler with Heater and
Email this problem
Can you Help with these Air Conditioners problems?
FANS ARE WORKING BUT THE AIR IS...
12 Other Users Have The Same Problem - Continued
Comment by Debster454, posted on Jun 09, 2008
we have a rv our air condtioner is a Delta Colman pat no :4628702 we had a gentleman come to our home to charge it but its still not working he needs to know what the amount of freon is in order to fill it can the airconditoner in our rv be filled thanks
Comment by freeze up, posted on Jun 05, 2008
do you need freeon if your coils freeze up even though it cools real well til it freezes up?
Comment by mrred1977, posted on May 31, 2008
How do I add freon to my unit and keep it charged
Comment by Guest, posted on May 30, 2008
My soleus MAC-12K blows hot air - like it needs Freon - where do I get it serviced?
Comment by Guest, posted on May 30, 2008
The unit I have blows hot air - like it needs Freon added - where or whom do I call to get it repaired?
Comment by Guest, posted on May 21, 2008
i just want to know what causes the ice to form on the coils in the furnace unit when the air conditioner is low on freon?
Comment by Guest, posted on Mar 27, 2008
My '78 Fleetwood RV's Coleman rooftop air condtioner is working fine for about 1 hour and then it looses cold air after couple of hours.
I talk to one RV services and told me that it is not rechargeable (R-12 freon). It recycles ok. Also I notice their is a freon service valve at the unit.
Can I recharged this unit? I have few 16oz R-12 freon I bought before the new regulations in effect.

