This method is applied to stored the refrigerant in a system of air-condition into a compressor.The main reason is to avoid a system from lost the refrigerant when perform the maintenance services or to relocated the unit.

We can save a cost for refill a refrigerant and can reduce a air pollution.Why we must throw out the refrigerant if we can stored it.Imagine if the system used a lot of refrigerant but we do not stored it,we waste the gas and cost for refill it back.

That why pump down method is important when we perform a task required to open or dismantle a pipe line of system.All maintenance person or HVAC technician must know how to perform pump down. read more