Prepare Your Cars Air Conditioning For Chicagos Summer Months

It can get hot in Chicago during the summer months, and the last thing that you want to have happen is to have your air conditioning stop working in your car. If this happens, the problem could be because of low refrigerant (freon) levels.

But there are signs that your air conditioning needs to be recharged, something that can be done at Milito’s Auto Repair.

Step 2: Assemble the Dispenser

I would recommend putting on your goggles now. Insert a can of refrigerant into bottom of the dispenser, and screw in all the way.Note: There is a needle inside the dispenser that pierces the can automatically.


What is a compressor clutch?

Before the compressor turns on, a special electro-magnetic clutch, conveniently called the “compressor clutch,” is necessary to engage and disengage the compressor cycle. The compressor clutch tells the compressor when to turn on or off so that the Freon (refrigerant) is correctly pressurized for use by the condenser which is then delivered to the evaporator where the chill begins.

Experiencing A/C problems? .

Step 6: Recharge the System

Determine the correct pressure to fill to.      Consult the table provided with your dispenser to determine the minimum and maximum acceptable pressure readings for the  current outside air temperature. This is your target pressure range. Some gauges have an adjustable “V’ on them to highlight the acceptable pressure range. Set yours to the appropriate position now.Take a pressure reading.      If the needle on the dispenser reads below the minimum acceptable pressure, begin filling the system.To fill the system with refrigerant:1. Squeeze the trigger for 5-10 seconds, slowly tipping and shaking the can. NEVER TURN THE CAN UPSIDE DOWN.2. Wait 30 seconds for the pressure to equalize.3. Read the pressure displayed on the gauge again. Only measure pressure while the compressor is engaged. If the pressure is still too low, keep adding refrigerant in the manner described above.4. When the pressure is correct, stop filing the system and wait a few minutes.5. Check the pressure one last time before removing the dispenser hose and replacing the protective cover on the fill port.BE VERY CAREFUL NOT TO ADD TOO MUCH!        If you believe you have added too much refrigerant, consult the troubleshooting guide on the last step.How do I tell when the can is empty?      This sounds too simple, but, it will feel empty. Shake the can or strike it with your fingernail. If it feels like it’s empty, it is.How do I change cans?      When the can is empty:1. Turn the can upside down.2. Hold the trigger on the dispenser for 30 seconds to 1 minute.3. Release the trigger.4. Unscrew the can from the dispenser, and screw a new one back on. NOTE: You should leave the dispenser connected to the fill port while emptying the can, unless you are finished with the filling process.DO NOT EMPTY THE LEFTOVER REFRIGERANT INTO THE AIR.Leave the unused portion in the can attached to the dispenser, and store where it will not be exposed to heat.It is illegal under Section 608 of the Clean Air Act to knowingly vent refrigerants during any service, maintenance, repair or disposal of an appliance.

Need maintenance or a repair? Got a question?

We love hearing from our neighbors in the metro Atlanta area. So if you have any questions, ask one of our experts for help.

Also, if you think your AC is low on Freon, or you just want to prevent a Freon leak, contact us for help. (P.S.: You’ll save 10% on any repairs by scheduling online!)

3. Visible Refrigerant Leaks

Another more serious symptom of low Freon levels is visible leaking. If you notice a leak, you will know it’s Freon if it appears as a ‘thin’ greasy substance. These leaks often appear under the hood around the compressor, inside the cabin, or leaking under your vehicle. If you notice leaking, you should head over to your local auto repair shop and have an ASE-Certified technician diagnose the issue and take care of your vehicle’s A/C issues.

What Aircon Gas Is In My Car?

What aircon gas is in my car

R134a type refrigerant is the most common refrigerant in the automobile industry. Almost every car built since 1994 is equipped with an R134a refrigerant.

The three most common types of refrigerants we use in vehicles. And you need to know what type of Freon you need before you recharge your car’s air conditioner.

Here are the types of refrigerants :

  1. R12R12 refrigerant is an old refrigerant type, and this is particularly efficient and cheap. In 1994, R12 type Freon was banned from all new cars sold in the US. R12 refrigerant is still a widely used refrigerant.
  2. R134aR134a Freon is the most commonly used vehicle. R134a Freon may be in your car right now. Almost every car built since 1994 is equipped with an R134 refrigerant.
  3. R1234yfThis is the new type of refrigerant in the automobile industry. R1234yf was chosen to replace R134a in all new cars by 2021.

Car manufacturers in other countries already use this refrigerant instead of R134a. So, R1234yf refrigerant will be the most used Freon in the vehicle.

How Often Does My Car AC Need to Be Recharged?

There’s no hard and fast rule here. Some new cars that stay cool with R134a may only need to be recharged every seven years or so. Living in a hot place like Gilbert though, there’s a good chance you’ll feel the need for a recharge even more often than that. Older cars (from before 1994) will need an AC recharge much more frequently, but you can’t even find many good shops that work with R12 Freon in the United States anymore for environmental health reasons.

In 2014, some cars started running on R1234YF. 1234YF is an effective coolant, but unfortunately, not many shops service it. It requires specialized equipment, which makes it hard for these car owners to get their AC recharged. Luckily, we at Highline Car Care are one of the few shops with the appropriate equipment to work with R1234YF.

It’s all about the pressure

Air conditioning systems leverage high-and-low pressure. Before the Freon is converted into a liquid in the high side, it starts out as a gas in the low pressure side of the system. The vehicle is kept cool by the constant circulation of refrigerant through the high and low pressure sides of the system.

How Does Freon Work

Freon gas needs to undergo an evaporation process. And the Freon evaporation process is the same for all refrigerators. In the evaporation process, the air conditioning makes Freon liquid and again makes it gaseous.

When the Freon gets evaporated A/C’s fan brings air from the outside and Freon cold air and eventually produces that air from the air conditioner.

How much does it cost to vacuum and recharge AC?

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A professional AC recharge cost ranges from $150 – $300 on average depending on the make and model of your vehicle. Due to refrigerant losses that occur over time, this service is one that should be added to your vehicle maintenance schedule.

Does Walmart do AC recharge?

Yes, Walmart offers various A/C rechargers from brands such as AC Pro, EZ Chill, and Interdynamics which customers can find in-store by oils and fluids for vehicles. What is this? Most available A/C recharges at Walmart come with leak sealers and a gauge for precise refilling.

Can I put Freon in my car AC myself? You’ve likely run low on refrigerant in your A/C system. Over time, tiny amounts of refrigerant leak from the lines, degrading A/C performance. The solution is simple – put more back in. Recharging your air conditioner yourself is inexpensive and can be completed in just a few minutes.

How long can Freon last?

Freon (which is really just a particular brand of refrigerant) lasts forever. It’s not like gas in car; it does not get “used up.” You see, your air conditioner’s refrigerant system is a “closed/sealed system,” meaning that it does not allow refrigerant to escape in any way.

What is a refrigerant charge port?

This is where the magic happens. The refrigerant charge port is the connection point where new refrigerant can enter the system during an A/C system recharge. Your port is usually located on the bigger A/C hose near or on the accumulator.

Caution: Only properly equipped and qualified persons should perform A/C recharging services.


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