One of the most common issues that occur with air conditioners is weak air flow. The reason that this issue comes up so often is that there are a number of potential issues that can cause weak air flow to occur:
Blockages or leaks in the ductwork
Rooms with different cooling needs
A clogged air filter
A dirty or malfunctioning AC blower
A frozen evaporator coil
We’ll examine each of these issues more closely below, as well as provide some troubleshooting tips for your AC system.
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Sometimes weak airflow problems have nothing do with your AC unit and everything to do with your ductwork. Your air ducts deliver the cooled air from your AC throughout your home. However, if leaks or holes develop in the ductwork, some of that air will escape along the way.
In addition, sometimes narrower air ducts can become blocked up with dust buildup or even the nests or rodents, insects, or birds.
The best thing to do is to contact an HVAC expert to inspect your ductwork. If there is debris blocking your ducts, you will most likely need to have your ducts cleaned. If your ducts have leaks, then they will need to be sealed.
If you notice that some rooms seem to be getting better airflow than others because of a noticeable difference in temperature, your AC’s airflow might not actually be the issue.
If your ductwork is free of any leaks or blockages, but some rooms are still significantly cooler than others, your rooms most likely have different cooling needs. Rooms may have different cooling needs because of how much sun exposure they get throughout the day or because what floor they’re on (2nd- or 3rd-story rooms tend to get much warmer than ground-floor rooms).
Trying to even out the temperatures throughout your home can result in high cooling costs, especially during summer. In order to save money in the long run, it’s often a good idea to install a zone control system. This type of system allows you to change the temperature in different areas of your home without altering it in other areas.
For example, if your living room downstairs is cool and comfortable, but an upstairs bedroom is unbearably warm, the zone control system would allow you to cool the bedroom without wasting energy (and money) on also cooling the already-comfortable living room.
In order for your AC to circulate air properly, air must be able to pass through your AC’s air filter. When the filter gets clogged with dirt, hair, and other debris, your AC is no longer able to pull in an adequate amount of air from inside your home, which in turn affects your system’s airflow.
The fix should be as easy as throwing out your clogged air filter and replacing it with a new one. Just as a habit, be sure to check and change your air filter regularly to prevent future clogs and damage to your HVAC system.
When it’s working properly, your AC blower pushes the air that your AC has cooled through your ductwork so that it reaches every room of your home. However, the blower may perform inadequately if its motor has gone bad or if its blades have gotten too dusty and grimy.
You might be able to solve the problem by wiping the blower motor blades clean with a rag. (Just make sure your AC is turned off first!) If this does not solve the airflow issue, then contact an HVAC technician so that they can inspect the blower.
When your air conditioner is functioning normally, it cools air by passing the air over its evaporator coils. However, if the coils freeze over, air is then unable to pass through the coils and into the ductwork, resulting in weak or no airflow.
Diagnosing this problem on your own can be tricky because there is more than one possible cause. Often, evaporator coils will freeze over due to a refrigerant leak. In some cases, the culprit might just be a clogged air filter or a return vent that’s been blocked by a piece of furniture.
In general, for a frozen evaporator coil, it’s best to contact an HVAC technician so that you can identify the root cause of the problem and get a professional repair.
If your AC is giving out little or no airflow, you should not have to wait days for a solution. Instead, trust Choice Air Care’s repair technicians to provide you with fast response times and a workable solution to your needs.
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