Why Your Air Conditioner Isn’t Blowing Cold Air

Home / Learning Center  

Air Conditioner Not Blowing Cold Air

Why Isn’t My Air Conditioner Blowing Cold Air?

The air conditioning system in your Sacramento home may not blow cool air as strongly as you expect due to several reasons. Here are some common culprits to investigate or ask your HVAC  professional to address.

Blower Malfunctions

The blower of the air conditioning system is responsible for forcing air to flow throughout the ductwork in your home. Any defect in the blower will result in a weakened flow of air to the different sections of your home. The blower may have been clogged by dirt to the extent that the blades cannot move freely. A thorough cleaning can fix this problem and get the blower working again.

However, you may need to have the blower motor replaced in case the motor has aged and can no longer work. This replacement project should be done by a Sacramento HVAC repair technician since the process is too complicated for a layperson to perform.

Ductwork Problems

Do you have flex ducts in your HVAC system? Such ducts can easily become crimped and stop the flow of air to a section of your home. The airflow can also be weak if a duct becomes disconnected and starts discharging air into the attic instead of into the room supplied by that affected duct.

Dirt can also accumulate and constrict the ducts through which air flows to the different living spaces in your home. The best way to fix this problem once and for all is by asking an HVAC professional in Sacramento to check the entire system of ducts in order to clean and restore those that are disconnected or crimped.

A Frozen Evaporator Coil

The air conditioning system supplies cool air by passing the warm air from your home over the evaporator coil in the outdoor unit of that AC. Anything which affects this cooling process can cause a weak airflow. For example, a refrigerant leak can cause ice to form on the evaporator coil. Consequently, it will be harder for air to flow over that evaporator coil. You will then notice that the flow of air from the vents is weak.

Similarly, dirt can also accumulate on the evaporator coil and restrict the flow of air over that coil. This problem will keep worsening until the evaporator coil fails completely due to the accumulation of heat around it. Start by turning the AC unit off in order to allow the ice on the evaporator coil to melt. Next, use a soft-bristled brush to clean off any dirt which may be on the evaporator coil. Turn the unit back on and observe whether the airflow improves. Call a Sacramento HVAC technician for help in case the problem persists.

Air Filter Problems

Another possible reason the AC isn’t blowing cold air is because of a clogged air filter.  This can also create an opportunity for the flow of air to become slow. This is because the accumulated debris prevents air from flowing through the filter media as easily as was the case when the filter was still new. Cleaning out or replacing such a dirty filter can cause the AC to blow harder.

The problem could also be due to the use of an incorrect filter for the AC in your home. Air filters have a rating for the amount of air that they can let through every hour. Installing a filter that isn’t rated for your HVAC system can slow down the flow of air around the home.

Make sure that you bought the correct type of filter for your AC by checking the user manual that came with the air conditioning unit in your home. Replace that filter with an appropriate one so that the airflow challenge is fixed.


As you can see, some of the reasons for the AC not blowing cold air can be fixed by a homeowner while others require expert help. You should, therefore, ask a Sacramento HVAC repair technician to inspect and fix the system in case your DIY efforts haven’t yielded any positive outcome.

If you have questions or concerns about the performance of your air conditioner, give Fox Family Heating and Air a call. We deliver honest and efficient service each and every time!

Fox Family Heating & Air serves Sacramento, Rancho Cordova, and all of Northern California. If you’re looking to schedule HVAC service in these areas, give us a call!

Don’t miss our video related to this topic:

Hours of Operation

Mon – Fri: 7:30 am – 5:00 pm
Sat – Sun: 8:00 AM – 4:00 PM

Rancho Cordova Chamber of Commerce
Nice Job Badge
IHACI Member Logo
HEE Certified Company

Previously Seen On

GoodDay Sacramento

HVAC Insider Logo
the News logo HVAC-Insider
HVAC Revealed Success Secrets HVAC-Overtime

HVAC Refer Guy