A/C Pro

Tips from the Pro

Post: Can I just vent the refrigerant if it is overcharged?

No. Not only is it harmful to the environment to vent refrigerant into the atmosphere, it is also illegal. Violation of this Federal Law may carry a fine of up to $25,000. If you need to recover refrigerant from your system please seek the help of a qualified service technician.

Read More

Post: Why is there a smiley face on the bottom of some of your cans?

The smiley face on the bottom of the can is actually a pressure relief vent to help release the pressure of the can should it become overheated. The refrigerant in the can is a high pressure gas. As with any gas it expands when heated. Therefore you should never leave or store any cans of refrigerant in your car compartment as they could overheat and rupture the can. You should always store the cans in a…

Read More

Post: Why does the blue bezel on some of your gauges turn?

The blue bezel turns on the gauge so that you can set the pressure range as it relates to the outside temperature. Here is how it works: determine the outside temperature around your car. Turn the bezel so that the arrow points to the outside temperature. Notice the “V” shape on the dial. This is the appropriate pressure range based on the ambient (outside) temperature. When reading the pressure, if the arrow is below the range…

Read More

Post: Why does my gauge go into the red/high pressure?

The most common reasons for the pressure gauge to indicate a red/high pressure reading are the car is not running, or the A/C is not on with the fan switch set to high and the temperature at its coldest setting. In order to obtain an accurate pressure reading the car must be running, the A/C set to the coldest position, and the fan setting set to high. Also, as the car’s compressor cycles on and off,…

Read More

Post: My pressures are correct but I am still getting warm air from the vents, why?

There are a number of possibilities. Your compressor may be damaged and not working properly. You can check to see if it is cycling on off properly by looking at the clutch plate face in the middle of the compressor pulley. Here is a video of compressor that is cycling on and off properly. If your compressor is not cycling on then you should seek the help of an AC Professional immediately. Ignoring the problem will…

Read More

Post: Does refrigerant go bad?

No. Your car’s A/C refrigerant never goes bad. Nor do you “use up” the refrigerant that is in your system. If your vehicle’s A/C system pressure is low, your vehicle has a refrigerant leak and that leak will need to be repaired in order for your system to hold refrigerant. If your vehicle is able to maintain a charge for a period of two weeks or longer, then it is possible to seal the leak with…

Read More

Post: Is an overcharged system dangerous?

Not only is overcharging your system potentially dangerous, an overcharged system will not function properly and can seriously damage your A/C compressor or other component parts. The symptoms of an overcharged A/C system are exactly the same as a system that is undercharged: warm air out of the vents. In order to prevent overcharging your A/C system it is imperative to measure the pressure before beginning to charge it. To measure the pressure in the A/C…

Read More

Post: How to recharge with a trigger style recharge hose?

“Does your gauge handle look like this? If so, you have a trigger style recharge hose. Follow these steps to recharge your car. Remember to always wear safety glasses and gloves when recharging your A/C. 1. Determine the ambient (outside) temperature before starting to charge your car. If the ambient temperature is 55°F or below do not charge the car. To determine the proper pressure of your car’s A/C set the bezel on the pressure gauge…

Read More

Post: How to recharge with a T-handle or Gauge-Handle style recharge hose?

Does your gauge handle look similar to one of these? If so, you have a T-handle or gauge handle recharge hose. Follow these steps to recharge your car. Remember to always wear safety glasses and gloves when recharging your vehicle’s A/C. 1. Determine the ambient (outside) temperature before starting to charge your car. If the ambient temperature is 55°F or below do not charge the car. To determine the proper pressure of your car’s A/C, set…

Read More

Post: How do I locate my low pressure port?

Need help finding your low side port? Use our Low Pressure Port Finder.

Read More