Common Air Conditioning Problems

Common Air Conditioning Problems

As a Floridian, you know having a reliable air conditioning system isn’t a luxury, but a necessity. When temperatures skyrocket, the cooling relief of an AC is the only way to keep your cool and beat the heat.

It always seems to be in the most inconvenient of times that you notice air conditioner problems. Whether it be from faulty equipment or poor maintenance when your air conditioner is struggling to provide cool air in the Florida heat you want to find out what’s causing it as soon as possible.

12 of The Most Common Air Conditioning Problems

Oftentimes, we get the same questions time and time again from our customers. Here are some common reasons why your air conditioner is having issues.

1. Dirty Air Filter

Changing the air filter is a simple task to maintain your air conditioner, but is one of the most common causes of AC problems. Changing the air filter on a monthly basis will ensure that the air is being cooled effectively and will keep your system running efficiently.

2. Refrigerant Leak

Refrigerant leaks are often overlooked if you are not familiar with air conditioners. If your air conditioner is low on refrigerant it was either undercharged at installation or there is a leak. Replacing the refrigerant if there is a leak will only cause your system to freeze and stop working. If there isn’t a leak then the manufacturer’s recommended amount of refrigerant should be followed to recharge the refrigerant. A trained technician should be called to fix either of these problems to ensure that the system is fixed correctly otherwise other problems will surface.

3. Disconnected Air Ducts

If the air ducts are not connected properly or are disconnected then air could be escaping under the house or into the walls. Rusty air ducts could also be causing air to escape. Air duct cleaning should be performed to make sure that the air ducts in your AC system are connected and functioning efficiently. Old or leaking air ducts can easily be replaced by a trained professional as well.

4. Clogged AC Drain Line

With all the rain here in Florida, blocked drains happen quite frequently. When drains are blocked air isn’t able to flow in our out of the system which causes it to stop working. When it is humid outside you can check the condensate drain to make sure it is draining properly. Learn how to unclog a clogged drain line yourself.

5. Worn-Out AC Compressor

When the compressor is worn, the refrigerant isn’t being pumped through the unit to produce cool air. If your AC is blowing warm air, replacing the compressor could fix the problem.

Schedule a consultation and a technician can analyze whether your compressor is working efficiently or not.

6. Blocked AC Sensor

Behind the control panel of most units, there is a thermostat sensor that measures the temperature of air entering the evaporator coil. Sometimes this sensor gets knocked out of place or stops working which causes your AC to run constantly or uncontrollably. You can check the position of the sensor by the coil to see if it is being blocked. It should be near the coil but not touching the coil.

7. Wrong Thermostat Setting

If you don’t have a window unit your thermostat is most likely programmable so that you can raise the air when you leave and have it lower when you are home. Make sure to keep your thermostat on ‘AUTO’, not ‘ON’ so that only cool air gets circulated around the house. Keep in mind that for every degree you raise your thermostat, you save 3% on utilities!

8. Dirty Evaporator Coils

Condenser coils play an important role in your air conditioner. Coils remove the heat that’s being extracted from your home and move it outside. Since they are located outside, it is easy for dirt and debris to collect over time. Dirty coils could cause your home to not cool effectively, warm air to come out of your air vents, and spike your utility bill. Annual maintenance on your air conditioner will ensure that the coils get cleaned properly and regularly.

9. AC Won’t Turn On

When your AC suddenly stops working during the height of summer, that’s an issue you can’t avoid. Common causes include a tripped circuit breaker, a problem with your thermostat, or the condenser unit plug isn’t connected or wires have been chewed.

First, visually inspect the cord coming out of the AC unit. Make sure it’s plugged in and all of the wires are intact. If you don’t see a problem there, try resetting the breakers connected to both your indoor and outdoor units. Wait 30 to 60 seconds, then turn them both on.

If nothing changes after five or ten minutes, check your float switch located on the emergency drain pan underneath the air handler. Pull the lid off the float switch and inspect the PVC line for water. If you see water or condensation buildup, use a Shop-Vac to remove it or call Blair’s for professional assistance.

For more information, check out our blog: 10 Reasons Your AC Won’t Turn On

10. AC Not Keeping the House as Cool as It Used To

If you notice your home just isn’t keeping cool the way it used to, there are a few different reasons this could be happening. Don’t despair, this is one of the most frequently asked questions we get from our customers.

Common causes include dirty air filters that are reducing the efficiency of your AC’s performance, obstructed air ducts that are unable to provide cool air to the inside of your home, or your system is freezing up.

This issue will take some inspecting and investigating on the part of a professional AC technician. Call Blair’s Air Conditioning to assess why the temperature in your house isn’t reaching your desired comfort level.

11. AC Blowing Warm Air

Few things are more frustrating than walking in the door from a hot afternoon outdoors and realizing your air conditioner is blowing warm air instead of cool.

Common causes include your thermostat is turned to heat mode, a dirty air filter has resulted in a dirty and malfunctioning evaporator coil, a blocked or obstructed outdoor compressor unit, your system is low on refrigerant.

First, go to your thermostat and make sure it’s set to cool rather than heat. If it’s set to cool, then check your air filter. A dirty filter can cause your evaporator coil to become dirty as well and impact the performance and efficiency of your entire system. You’ll need to call a professional to clean your coils.

12. AC System Is Too Old

Homes with older AC units can experience a variety of issues, from frequent service calls to refrigerant leaks.

Here are a few additional issues homeowners might encounter with older AC units:

Some problems might require repairs, but units older than 10 years might need replacing. Outdated window units come with their own set of issues.

Fortunately, heating and cooling systems continue to improve each year, so investing in a newer model makes sense.

Contact Blair’s Air for Your Air Conditioner Problems

Have a question about your AC system that wasn’t listed above? We love helping customers find AC solutions and are eager to answer any questions you might have.

Serving the Bay area since 1974, Blair’s Air specializes in maintenance, repairs, and replacements for all your air conditioner problems. Quick response and quality service are more than just a tradition, it’s a promise.

Contact us today if you’re in need of trusted, reliable service.

Call (727) 800-4148 to schedule service.