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Window air conditioner blowing ice chunks

Window air conditioner blowing ice chunks. The air conditioner’s job is to keep you cool in this hot weather. It’s the best way to beat this hot summer season.

Is there ice built up on your air conditioner? Ice can form on the unit if the filter isn’t cleaned regularly, affecting the cooling process.

It’s frustrating! Ice inside or outside your air conditioner isn’t normal, and you should deal with it as soon as possible to avoid damage.

There are many reasons behind ice but up. This article will discuss what’s causing ice on your AC and how to fix this issue.

Window air conditioner blowing ice chunks

window air conditioner blowing ice chunks 2022 solution

Ice built-up is abnormal, and it can affect your unit’s performance. Here are some possible reasons along with the solution.

Air Flow Isn’t Up To Mark

Air conditioners require at least 10 inches of clearance on each side of the compressor to ensure enough airflow.

The evaporator coils absorb heat from the inside of the room and are in contact with the condenser coil, which works with the compressor to eliminate water through the outer pipe, and cold air is passed back to the room.

So, make sure the following three things:

  1. There is enough airflow.
  2. Anything blocking airflow? Remove it.
  3. Is the compressor dirty? Clean it!

Evaporator Coils Are Dirty

The room’s air passes through the filter and into an evaporator coil, but the filter isn’t powerful enough to filter all airborne particles.

After some time, the coils get dirty and get clogged. This puts pressure on the compressor, and when it can’t throw cold air into the room, ice builds upon the compressor.

Wanna clean the evaporator coils? Here’s how to do it:

  1. Turn off the air conditioner.
  2. Unscrew and loosen the access panel. You’ll see the evaporator coils.
  3. Use an air blower to remove the dust from the coils.
  4. Use a brush, put detergent on it, and rub it to remove stubborn dirt.
  5. Take a towel and wipe down the coils.

Broken Drain Line

ac drain pipe is broken

As you know that an air conditioner works by absorbing air from the room. The water generated by compressing the air passes through the drain line and drains out of the AC.

If the drain line is blocked, the water will start dripping, and when it comes in contact with evaporator coils, it starts freezing. In this case, you have to replace the drain line.

Symptoms Of Ice But On AC

To keep the cooling process steady, you should ensure enough air. A lack of air can disturb the process. Here are some symptoms of ice built up on your air conditioner.

  • The room isn’t getting cold.
  • Water dripping from the compressor.
  • Water droplets on the compressor.
  • Water spots on your room’s wall.
  • AC is not throwing enough air as it used to.

Prevent The Issue!

Prevention is the key; it is always better than repairing, which costs you bucks and saves your time. Here are some things you can do to prevent ice build-up.

  • Clean the unit once every six months.
  • Check regularly for any broken components.
  • Clean the filter often. If not cleaned regularly, dirt will accumulate in the unit.
  • Replace the filter if it is clogged enough and cannot be cleared after cleaning.
  • Ensure your AC gets enough air and nothing isn’t blocking the airflow.


If your air conditioner blows ice chunks, ice is built up inside it, and something is wrong with your AC. Before cleaning/fixing, turn off the unit and leave it for an hour to defrost the ice completely. We hope our guide has helped you to track down the issue. Thank you for your time!

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