Every auto air conditioning system has two service ports: one on the high pressure and one on the low pressure side. When recharging with AC Avalanche refrigerant, for safety, you will charge through the low side service port. Never charge through the high side port.

Do you fill AC on the high or low side?

You only add refrigerant to the low side of the AC system. This helps draw in the refrigerant and prevents damage to the compressor. Normally the fittings are also different on the high/low sides to help facilitate this.

What happens if you charge AC on high side?

High loads will make sure that the TXV metering device is fully open and delivering the maximum amount of refrigerant to the evaporator. At these higher evaporator heat loads, the receiver will be at its lowest level.

What PSI should I recharge my AC to?

Low Pressure and High Pressure Readings If you are using a low pressure gauge when the low pressure reading is between 25 psi and 40 psi, the system is fully charged. For a high pressure gauge when the high pressure reading is 200 to 225 psi for R12 or 225 to 250 psi for 134a, the system is fully charged.

What color is the high side of an AC system?

Red Red hose goes to the high pressure side, blue goes to the low pressure side and yellow hooks to Freon source, can, etc. 2 of 2 found this helpful.

How do you tell a high side from low side AC?

The low side of the system where the freon goes is always the fastest of the two hoses comming off of the compressor. The high side of the system is the smaller of the two. And on a 134a system the low side port is the bigger of the two. Hope this helps.

Which side do you put freon in?

The freon is added on the LOW PRESSURE SIDE ONLY. The hose tool you bought is made so you can only hook to the low side as the high side and low side fittings are different sizes and shapes for SAFETYS SAKE.

What should AC gauges read on 134a?

It can be used for recharging refrigerant, or to diagnose an a/c system based on pressure readings from your gauges .R134a Pressure Gauge Chart.Ambient Temperature (°F)Low SideHigh Side75°40-45 psi150-175 psi70°35-40 psi140-165 psi65°25-35 psi135-155 psi7 more rows•Jan 13, 2018

How many cans of freon is 3 pounds?

3 Lbs would be 48oz 4 cans. The refrigerant is measured in weight, not fluid ounces.

How can you tell low side from high side?

1:527:16HVAC training gauges connections high side low side 410a - YouTubeYouTube

What side do you charge an AC system?

Every auto air conditioning system has two service ports: one on the high pressure and one on the low pressure side. When recharging with AC Avalanche refrigerant, for safety, you will charge through the low side service port. Never charge through the high side port.

What color is the low side of an AC system?

Red hose goes to the high pressure side, blue goes to the low pressure side and yellow hooks to Freon source, can, etc.

Can I put Freon in my car AC myself?

Youve likely run low on refrigerant in your A/C system. Over time, tiny amounts of refrigerant leak from the lines, degrading A/C performance. Recharging your air conditioner yourself is inexpensive and can be completed in just a few minutes.

Can you recharge your home AC yourself?

The U.S. Environmental Protection Agency (EPA) recommends not replacing Freon or refrigerant by yourself for both health and environmental reasons. Only an EPA licensed technician is legally allowed to reclaim Freon.

How do you know if your AC is overcharged?

Signs and Symptoms of Overcharged Car ACFaulty Cooling. One of the most evident signs of an overcharged AC is faulty cooling. Noisy or Broken Compressor. The AC works in a cycle transforming compressed liquid coolant into a gas then back to its liquid state. High Pressure. Failing Engine.

What pressure should a 134a run at?

22 pounds per square inch For normal running pressures in the R134a system, at the lowest temperature, the coil should run at 22 pounds per square inch that is 45-20, 25 degrees Fahrenheit. While at the highest temperature it should be 57 pounds per square inches that is 60-20,40 degrees Fahrenheit.

How many pounds is in one can of freon?

Today when we speak of 1 pound of refrigerant that amount is equal to 16 ounces. When we speak of 1 can of refrigerant that is an amount that is equal 12 ounces. When recharging with a charging station or with a 30lb cylinder and an electronic scale, you need to add 2oz to the system capacity specification.

How much is a pound of 134a?

In order to get the price per pound lets do some simple math: $150 / 30lb cylinder = $5.00 per pound.

What should the high and low side pressures be?

The system should be about 25 to 30 psi on the low side and 200 to 250 psi on the high side. If the ambient temperature is higher or lower than normal (70 to 80°F) the pressures will go up or down accordingly.

Does vacuuming AC remove oil?

Pulling a Vacuum on the system (especially for just 30 minutes) will not remove much (if any) of that oil and only then if it had absorbed moisture.

How much does an AC recharge cost?

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.