Why is there ice on my discharge line?

The main reason why your AC lines are freezing is because your evaporator coils are getting too cold. The evaporator coil is filled with refrigerant which cools the air in your HVAC system. The ice can eventually accumulate on the refrigerant line.

What is suction and discharge in AC?

The suction line connects the evaporator to the compressor, the discharge line connects the compressor to the condenser, and the liquid line connects the condenser to the expansion device. The expansion device is typically located at the end of the liquid line, at the inlet to the evaporator.

What is the discharge line on a air conditioner?

DISCHARGE LINE – Line connecting compress outlet to the condenser inlet. DRIER – A device containing a desiccant placed in series, usually in the liquid line, to absorb and hold excess moisture. Usually called receiver-drier.

Is the high side AC line suction or discharge?

The high side, or discharge line, will be the line connected to the compressor from the bottom or lower position. It will not be wrapped in insulation and will be warm to the touch. This is where freon exits the compressor as a liquid.

What is suction line?

The suction line is the section of piping in a pump system which extends from the extraction point (e. g. pond) to the pump (suction-side system).

Why is the air conditioner pipe frozen outside?

When the warm airflow over the evaporator coils is restricted, the refrigerant can’t do its job. When there isn’t enough warm air flowing over the evaporator coils, there is not enough heat to balance the cold refrigerant. Not enough heat counterbalancing the refrigerant will lead to ice forming on the pipes.

Why is my AC suction line freezing?

Why Frost or Ice May Appear on an Air Conditioning Refrigerant Suction Line. Refrigerant charge level: Improper refrigerant charge (too low a charge of refrigerant in the A/C system can, for a while, lead to too-low temperatures in the coil which will then cause frost or ice build-up on the suction line.

Why is the discharge line smaller than the suction line?

Re: Why are discharge lines smaller than suction lines? The mass flow is the same in the suction and discharge, in the suction you have low density, in the discharge you have higher density. In addition vapour in suction pipe has high density in discharge lower.

Should both AC lines be cold?

When the system is operating, the large insulated suction line should be cold to the touch and sweating at any point where there is no insulation. The smaller uninsulated liquid line should be warm to the touch after the system has been operating for 10 or 15 minutes.