What is air conditioner gas, how many types? How to measure air conditioning gas pressure correctly?

Air conditioning gas is an important component in air conditioners and has a great influence on the cooling performance of the machine. Therefore, you need to know when to refill air conditioner gas for the machine to operate smoothly. Let’s find out what air conditioning gas is with Tnhelearning.edu.vn, there are several types and how to measure the correct air conditioning gas pressure right away!

What is air conditioner gas?

Air conditioning gas is a refrigerant that is responsible for transporting heat vapor from a place with a lower temperature to an area with a higher temperature. The heat dissipation of the air conditioner helps to maintain the room temperature as set.

Therefore, air conditioning gas is an important and necessary component to support the air conditioner, helping the air conditioner to generate the right temperature.

Popular types of air conditioning gas

Each type of air conditioner will be suitable for a certain type of air conditioning gas to help the machine operate more optimally. Currently, air conditioners on the market often use 3 popular types of air conditioning gas as follows:

• Gas R22: is a very common gas used with about 70% of today’s air conditioners. This gas has the advantages of low cost, easy maintenance, non-flammable and non-toxic to users. However, R22 gas is harmful to the ozone layer and leads to environmental pollution , so it has been banned for use in some countries.

• Gas R410A: is a gas invented to replace R22 with a more volatile chemical configuration. The cooling capacity of R410A gas is also improved by 1.6 times compared to R22. Therefore, R410A is the solution with less environmental pollution , more efficient use and more energy saving than R22.

• Gas R32 is the latest improved gas, which can replace both R410A and R22. Gas R32 can reduce emissions by 75% , support deep cooling and save much more electricity. In particular, you can switch to using R32 gas immediately if your air conditioner is using R410A gas because these two gases have the same pressure .

How to measure air conditioning gas pressure

Preparing instruments

To measure air conditioning gas pressure, you need to prepare some tools as follows:

• A wrench
• A screwdriver
• An air conditioner gas meter has the unit of measurement Psi.

Steps to measure air conditioning gas pressure

• Step 1: Remove the protective board on the heater of the air conditioner with a screwdriver.

• Step 2: Remove all screws securing the lock on the gable and ejector.

• Step 3: Turn on the air conditioner and let it run stably at the lowest temperature.

• Step 4: Screw one end of the gas meter into the air conditioner’s head and wait for about 1 minute to measure the pressure.

• Step 5: Observe the pressure measurement displayed on the gauge screen.

When to measure air conditioning gas pressure?

You need to measure the air conditioning gas pressure when you notice some of the following signs:

• The air conditioner, the air conditioner is frozen and there is no heat discharged to the outdoor air conditioner.
• The cold is too weak or the air is not cold when the air conditioner is turned on.
• Low air conditioning gas pressure is displayed on the remote .

The most standard gas pressure table

Gas type	R22	R410A	R32
Rated gas pressure when the machine is running:	60 – 78 Psi	110 – 130 Psi	125 – 150 Psi
Gas pressure when the machine is not running:	140 – 160 Psi	250 Psi	240 – 245 Psi
Standard current:	3.9 – 4.2A	5 – 5.5A	No information
Gas charge volume:	0.65 kg	No information	No information

Hopefully the article will help you better understand air conditioning gas and know how to measure gas pressure accurately. If you have any questions, please leave a comment below the article!