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AC Airflow

Experiencing Weak AC Airflow? Here are 5 Possible Reasons

Nothing matches the feeling of a forceful rush of cold air flowing from your vents on a hot day! However, when your air conditioner’s airflow is insufficient, it becomes tough to keep your house comfortable. Weak airflow is an indication of system problems, and it causes more than just pain — your cooling system may be damaged.

1. Dirty Air Filter

When was the last time you replaced the filter on your air conditioner?

That filter is responsible for removing dust and debris from the air and keeping it out of your equipment and ducts. When the filter becomes overloaded and clogged, it impedes the airflow of your HVAC system, resulting in hot and cold patches and stuffy air. Debris in the device might damage parts as well.

Change your AC filter according to the manufacturer’s instructions and the usage of your system. This might be as often as once a month.

2. Leaky Ducts or Duct Blockage

Air conditioning works hard to keep your home cool, especially in the summer. When you have a leaky duct or duct blockage, you waste energy and can potentially damage your HVAC system.

Leaky ducts are usually small holes or cracks in the ductwork, allowing airflow to escape. Usually, you cannot see these holes, which is why it is important to have your ducts checked by a professional. Air leaks can occur anywhere in the system.

Blockages happen when material is inserted into the duct, like insulation, dryer sheets, rags, or other debris. They can also occur when your air ducts are too small for the size of your HVAC system.

3. Dirty Coils

Your air conditioner may not have enough airflow if the coils are dirty. Dirty coils can shorten the lifespan of your air conditioner and make your home uncomfortable. Dirt and debris cling to coils because of moisture and try to stick to the metal, which causes them to stick together.

A dirty coil can keep your system from functioning properly and should be cleaned immediately. That’s why it’s important to keep your air ducts clean as well.

4. Low Refrigerant Levels

If your air conditioner is using air, but not cooling it effectively, it could be a refrigerant leak. Low refrigerant levels not only lead to system issues, but can also cause serious health problems.

If you suspect a leak, you should call a professional right away. They will be able to find the leak and repair it, or replace your HVAC system if it is beyond repair.

5. Damaged Compressor

Your air conditioner’s compressor is the heart of your cooling system. Compressors are responsible for pumping refrigerant through your HVAC system and turning it into cool air.

A damaged compressor can’t work properly, and your air conditioner will be unable to produce cool air, even if the coils are clean, the air filter is clean, and the ducts are dry. If the compressor is damaged, you may need to replace it.


If you want to reduce your cooling costs, increase comfort and eliminate the five problems discussed above, contact a professional right away. Schedule an appointment to have your HVAC equipment serviced. Proper maintenance ensures that your system continues to work at its highest level so that you will get the most efficient cooling from your AC.

If you need HVAC unit cleaning or repair in Castle Rock, contact us for immediate assistance. CG Heating & Cooling provides solutions for heat pump repair issues and free estimates for new equipment installation.