In the context of air conditioning, the term "gas" usually refers to the refrigerant used in the system. The amount of refrigerant in an air conditioning unit, such as a 1.5-ton AC, is typically specified by its "charge" or "refrigerant capacity." The refrigerant is a crucial component that facilitates the cooling process by absorbing and releasing heat as it cycles through the system.
The most commonly used refrigerant for residential air conditioners was R-22 (also known as HCFC-22), but due to its negative environmental impact, it has been phased out in many countries. The modern and more environmentally friendly refrigerant used now is R-410A (also known as Puron).
For a 1.5-ton air conditioner using R-22 refrigerant, the refrigerant charge typically ranged between 1.75 to 2.0 pounds (0.79 to 0.91 kilograms). Keep in mind that the actual amount of refrigerant might vary slightly depending on the specific make and model of the air conditioner.
For an air conditioner using R-410A refrigerant, the charge is usually higher due to the differences in the characteristics of the refrigerant. For a 1.5-ton AC using R-410A, the refrigerant charge could be around 3.75 to 4.0 pounds (1.7 to 1.8 kilograms) or more.
It's essential to note that refrigerant charging should be handled by trained HVAC professionals. If you suspect any issues with your air conditioner's refrigerant levels or performance, it's best to contact a certified technician to inspect and service the unit properly. Refrigerant handling requires specialized equipment and knowledge to ensure the safe and efficient operation of the air conditioning system.