Can you recover Freon with a vacuum pump?

Asked By: Maybell Vonrhein | Last Updated: 5th January, 2020
Category: home and garden indoor environmental quality
4/5 (1,567 Views . 36 Votes)
There's absolutely no need to use a vacuum pump to remove the refrigerant. It's really easy to remove the refrigerant by condensing it out. If you're a shade tree mechanic, this is what has worked for me to recover and store R134a: Get a refrigerant recovery tank with 1/4" fittings.

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Keeping this in view, can you use a recovery machine as a vacuum pump?

Vac pumps not designed for pressure, the exhaust need to be open to atmosphere. You'll need a recovery machine, but if you are not familiar with working with refrigerant as it appears you are not, you would be better to hire a professional, especially with the price of refrigerants these days.

Also Know, does a vacuum pump remove oil from AC system? Just getting around to trying to get the AC to work. Pulling a vacuum will not remove the oil. Most of the time unless you replace your compressor or accumulator you should not need to add oil.

Similarly, it is asked, how can I restore refrigerant without a machine?

Refrigerants Recovery Process Using Gauges and Tanks

  1. Get a recovery tank and put an inline filter on the input of it.
  2. Evacuate the tank and place it in the freezer.
  3. Connect the gauges to the system and recovery tank with the closed tank valves and open gauge handwheels.

How can I vacuum my AC without a pump?

We have developed a method of removing the air from a system without the use of a vacuum pump. The method requires the installation of an access valve on the high and low side of the system. 1 - With the new compressor installed, turn on the compressor and depress the access valve on the high side of the system.

39 Related Question Answers Found

Do I need to add oil after evacuating AC?

Above all, only trained and licensed professionals should work on AC systems. That way, there's no risk of doing any damage to the system, or letting refrigerant vent into the atmosphere. To answer the question title, yes, you will have to add oil to the new refrigerant.

Do I have to pull a vacuum on my car AC system?

If you don't vacuum out an AC system prior to refilling it with refrigerant you will not get maximum performance because there will be minor amounts of air (humidity/moisture) in there. SO by vacuuming an AC system we reduce the pressure so that any water in the system will boil away at ambient temperatures.

How do you use a vacuum pump on a car air conditioner?

How to Vacuum an AC System
  1. Turn off the air conditioning in the car and switch off the car engine.
  2. Hook up the refrigerant gauge manifold set.
  3. Screw the AC vacuum pump to the center valve of the refrigerant gauge manifold set.
  4. Close the valve that goes to the gauge.

How do you remove freon from air conditioner?

How to Remove Refrigerant from Car AC?
  1. Switch the indoor thermostat off.
  2. Locate the low-pressure side of your refrigerant and the suction side of the compressor.
  3. Use your wrench to close the service valve that you will see on the condensing unit's low-pressure side.
  4. Now, close the high-pressure side's service valve just slightly.

What is recovery in HVAC?


Vapor Recovery. In the vapor recovery method, the refrigerant is removed from the HVAC system in a vapor state. The vapor is then condensed into a liquid by the recovery unit and transferred to the recovery cyclinder. Vapor Recovery Process. Turn off the HVAC system as well as the recovery machine.

How much does it cost to recover refrigerant?

The average cost for an air conditioning refrigerant recover is between $35 and $45. Labor costs are estimated between $35 and $45.

Can you recover r134a with a vacuum pump?

There's absolutely no need to use a vacuum pump to remove the refrigerant. It's really easy to remove the refrigerant by condensing it out. If you're a shade tree mechanic, this is what has worked for me to recover and store R134a: Get a refrigerant recovery tank with 1/4" fittings.

Can you put r22 in a r410a system?

No, you cannot. To make a short story long, R410A and R22 are refrigerants. They are both good refrigerants and they both work, but they have to be charged in the system at different pressures. R410A is a higher pressure system and R22 is a lower pressure system.

Does r134a need to be recovered?

Refrigerant summary
If you use anything other than R134a, you'll likely create a situation where you must be the one servicing the system. Even if you're OK with that, if the system needs work, any refrigerant in it will need to be recovered.

How do you recycle refrigerant?


Recycling refrigerantsRecycling refrigerants is done by first removing the refrigerant from the system containing it, and then sending it through equipment that will “clean” it. Cleaning refrigerants entails removing the moisture and particles that make it toxic.

Why is refrigerant recovery necessary?

Refrigerants play an important role in the heat transfer process that makes air conditioning and heating systems possible. There are other important reasons to recover refrigerant besides the law. It's beneficial for the environment, as it reduces the amount of harmful refrigerants entering it.

How do you pump refrigerant back into a condenser?

So to pump the freon into the compressor, close your high side king valve, which is the liquid line or small line, and then push the contactor in. You should see your suction line guage start to move down.

Can Freon be reused?

Yes, it can be reused. The law states that refrigerant can be re-installed into any machine owned by the same person who owned the machine it came out of.

Do you recover refrigerant from high or low side?

Liquid recovery is performed the same way as standard vapor recovery. The only difference is that you connect to the high side of the system. Recovering liquid is ideal for recovering large amounts of refrigerant, such as when you transfer refrigerant, or if the system you are servicing allows you to recover liquid.

How much refrigerant can you put in a recovery tank?


For example, if a recovery cylinder has a water capacity of 47.17 pounds, then its internal volume will be 0.75 cubic feet (47.17 pounds ÷ 62.5 pounds/cubic foot = 0.75 cubic feet). 2. For the refrigerant to be recovered, determine its liquid density at a saturation temperature of 130°F.

Does 410a have to be recovered?

Fact: R-410A can be reclaimed and reused; however, recycled refrigerant may only be returned to the equipment from which it was removed or used in another device owned by the same person, clarified Goss. “Refrigerant that is too contaminated for reuse must either be disposed of properly or reclaimed.

How long should AC system hold vacuum?

Vacuum pressure should be tracked and should reflect up to 27 Hg or aptly 29 inches. When concerned as to how long to vacuum car ac system, you should know that it would take around 30-45 minutes. This is enough time period to get rid of moisture and dust inside the AC system.