As the father of an autistic child, I have been faced with more than a few necessary home modifications projects. Unfortunately, with the high cost of raising a special needs child and my wife's decision to stay home and raise our son, there simply was no room in our budget to hire a contractor to complete these projects for us. Each weekend for nearly a year, I would pick a project to work on. This past month, I finally finished every project on my list. After learning more than I thought I would ever know about home construction and repair, I have a new found appreciation for the skills of general and specialty contractors. That is why I decided to start this blog to pay tribute to the job these contractors do, and help to empower more homeowners to take on the role of a contractor in their home.
When you turn on the AC of your car, it might blow warm air, but no cold air. This can indicate one of several underlying problems with your car AC unit. This could indicate that you do not have enough refrigerant in your car AC. You will need to recharge your AC with freon.
Assembling the Right Tools
Prior to recharging your car, you will need to determine which model of freon your car uses. There is a newer R134 freon, but many cars still use the R12 refrigerant. Before you can recharge the AC, you will need to know how much refrigerant is in it to begin with. A pressure gauge will let you know how much refrigerant you have in your AC unit. After you have assembled the pressure gauge, screw the rubber hose that comes with it to the pressure gauge. To make sure that the gauge is properly calibrated, find out what the temperature is outside. Then, turn the pressure gauge to the proper temperature.
Your AC unit has a high-pressure and low-pressure gauge. You will need the low-pressure gauge when testing your AC unit. Fortunately, the cap for the port is usually labeled L. Prior to removing the port, clean the area so you do not get dirt inside the compressor. Otherwise, this will lead to a premature AC failure. Then, you must attach the gauge to the hose.
Checking the Pressure
Turn the car on and set the air conditioning to high. Then, look at the gauge to determine how much pressure is building. After a few minutes, you'll be able to see how much pressure there is and whether you need to add more freon. If the PSI reading is below 25, you will need to add more freon.
Adding the Refrigerant
To add a can of refrigerant, remove the hose from the port. Then, screw the gauge assembly onto the can. When you turn the gauge clockwise, you will pierce the can. Attach the hose to the low pressure port. Then, start the engine and allow for the AC to run. It will take a minute to pressure up and then turn the gauge counterclockwise to release the freon. Rotate the can back and forth to allow the rest of the refrigerant to be released.
If recharging your AC is beyond what you are comfortable doing, you should consider having your air conditioning repair done by a technician. Some of the equipment is expensive and you might not use it often enough to justify the cost.Share
12 January 2015