10 Of The Most Common Central Air Conditioner Problems

Air conditioning is supposed to be your home’s cool refuge in the hot summer months in Newark, DE, but it can quickly become a nightmare when it’s not working right. As a homeowner, it’s important to be prepared for potential problems with your central air conditioning unit, whether it’s a Lennox or a Carrier system. I’m here to help you avoid costly mistakes with these 11 common air conditioner issues in 2023. With step-by-step solutions, we’ll ensure your air conditioner runs safely and efficiently, keeping you and your family comfortable all summer. Remember, let’s make it right!

1. Central Air Running All The Time

Using your air conditioner frequently is common in Newark’s hot and humid summers. First, however, it’s worth questioning whether your AC unit should run continuously. Normally, central air conditioning operates by turning on and off multiple times per hour to attain and sustain the temperature set on your thermostat. But if your central air runs non-stop, it could indicate a problem.

SOLUTION:

Improper Size and Installation Can be Damaging: A central air conditioning system that is too small will work harder to cool your home, increasing wear and tear, reducing its lifespan, and leading to likely breakdowns. A too-large system will not remove moisture from the air, produce moist air, have shorter run times, and use excessive amounts of electricity. The size of your ductwork should be relative to the size of your air conditioning unit to ensure efficient airflow and distribution of cool air.

Check Your Air Filter for Immediate Relief: A dirty air filter restricts airflow, reducing the amount of cool air produced and making your system work harder. Change or clean your air filter at least once a month.

Air Conditioner Coils Covered in Dirt? Dirty condenser and evaporator coils reduce airflow and lower heat transfer efficiency, resulting in poor cooling performance, higher operating costs, and longer system cycles. Have a service technician perform annual maintenance to clean the condenser coils and remove dirt and dust from the evaporator coils.

Thermostat Not Working – Here’s What to Do: If your air conditioning system never shuts off, your thermostat may have an issue. Check if your thermostat is correctly set to “Heat” or “Cool,” and that the main circuit breaker for the air conditioner is in the “On” position. If your thermostat is not registering the conditions in your home, try placing another thermometer near it to check if the temperature is at or near your desired home temperature.

Air Leaks or Poor Insulation – Time to Seal: Poor sealing or insufficient insulation can cause your central air conditioning system to run constantly and inefficiently, resulting in the loss of cool air. Seal holes or insulate walls and roof to keep your home closed up tight while your air conditioning system is in use.

Blocked or Closed Vents – Check Your Registers: If some rooms in your home are not getting enough cool air, they could be blocked or closed vents. Ensure that all the vents and registers in your home are open and unobstructed by furniture, curtains, or rugs.

Refrigerant Levels Low – Time for a Service: Call If you’ve tried all the above solutions and your air conditioning system still seems to be running non-stop, then it’s time to call in a professional. Low refrigerant levels can cause your system to work harder than necessary, resulting in higher energy bills and reduced cooling capacity.

2. Central Air Refrigerant Leak

If you own an older air conditioner, it likely uses Freon as a refrigerant. However, the United States government started phasing out the production and importation of Freon (also known as R-22) in 2010, and the complete ban on manufacturing and importing new R-22 units took effect in 2020. This measure was implemented to protect the ozone layer. Consequently, the cost of R-22 has increased significantly, prompting many homeowners to replace their outdated air conditioning units with newer, more environmentally friendly models that use alternative refrigerants.

As of 2021, only recycled Freon is available, and even this is becoming increasingly scarce and costly. Since central air conditioners are closed systems, the Freon inside should not evaporate or deplete over time. In theory, it could last forever unless there is a leak in the system. If this occurs, your air conditioner must work harder to compensate for the missing refrigerant.

Contact an air conditioning repair professional

3. Central Air Water Leak

Often, you may notice a pool of water under your outdoor condenser unit for the air conditioning system. This could be considered normal if the water appears only when the AC is running, particularly on hot and humid days. However, if you observe a continuous leak or a significant volume of water, this could indicate an issue that requires attention.

SOLUTION: If your air filter appears clogged or damp, it’s important to replace it promptly. Additionally, checking the outdoor thermometer before running your air conditioning system on days with cooler temperatures is advisable. Using your AC when the temperature drops below 16 degrees Celsius can cause the coils to freeze and lead to water leakage.

If you continue to experience issues, it’s best to contact a technician to perform a tune-up and diagnose any underlying problems.

Cental Air Making Loud Noises

As a rule, central air conditioners tend to make a certain amount of noise. You’ll likely hear brief clicks, clunks, squeals, or shudders on startup. During operation, a constant soft hum — plus the occasional gurgle — is par for the course.

However, beware of loud noises (like screechings or grindings), or new ones that develop suddenly. They could signal serious AC problems.

SOLUTION: Typically, central air conditioners generate a certain level of noise. You may hear short-lived clicks, clunks, squeals, or shudders during startup. While in use, a constant low-level hum, as well as occasional gurgles, are expected.

Nevertheless, it’s crucial to be aware of loud noises, such as screeching or grinding sounds, or any new noises that emerge suddenly. These could indicate significant problems with your AC and require urgent attention.

5. Central Air Smells Bad

Determining the source of odors from your central air can be challenging as they may not always originate from the AC unit. Instead, the HVAC ductwork may distribute certain smells throughout your home. For instance, the “rotten egg” odor of a natural gas leak or cigarette smoke from indoor smoking.

In contrast, air conditioning issues can result in other scents, such as burning, coolant, or exhaust.

SOLUTION:Eliminating cigarette odor is as easy as smoking outside. However, most other odors emanating from your air conditioner are signs of a pressing issue. In such cases, turn off the system immediately and seek emergency HVAC repair services.

6. Central Air Not Cooling

Experiencing a situation where you can hear the central air conditioning system’s motor running but failing to provide the expected coolness can be quite irritating. The reasons behind this issue can vary from simple mistakes to more complicated problems.

SOLUTION:Methodically go through possible causes individually. First, ensure you set the thermostat to COOL, not just ON. Next, ensure that all windows and doors in your home are closed and that your vents are open but not obstructed by furniture or curtains. After that, replace the filter if it is clogged. Finally, remove any debris from your outside condenser unit, and clean the fins gently, if necessary.

If your AC is still not cooling, you have tried all the available DIY remedies. It is possible that your AC has a refrigerant leak that needs attention, or it might require mechanical repair. Other potential solutions include having your ductwork professionally inspected (the ducts may leak cooled air), or — in the worst-case scenario — replacing your air conditioner entirely.

7. Central Air Blowing Warm Air

An air conditioner blowing warm air is an unwelcome experience that can make you uncomfortable and frustrated. The last thing you want during hot weather is to feel warm breezes wafting through your rooms!

SOLUTION: Follow these steps if your air conditioner is blowing warm air. First, check if your thermostat is set to COOL and not ON or HEAT. Second, replace the filter to ensure proper airflow. Third, check if the circuit breaker for your condenser has tripped, as a tripped breaker can cause the air handler to blow warm air. If none of these steps solve the problem, it may be a refrigerant leakage issue that requires the attention of an HVAC expert to clean the system and fix any leaks.

8. Central Air Freezing Up

You want your central air conditioning to be nice and cool in the summertime but not frozen! While an air conditioner freezing up may not always be a major issue, ignoring it can lead to costly damage to your AC system.

SOLUTION:As with most AC issues, starting with the basics is a good idea. Begin by replacing the air filter and raising the thermostat setting. These simple steps often resolve the issue. However, if these DIY methods do not help, it’s best to call in a professional AC repair service. They can inspect the system for a malfunctioning fan, non-working drainage, or a refrigerant leak, which could be causing the air conditioner to freeze. It’s important to address these issues promptly to avoid further damage to the system.

9. Air Conditioner Is The Wrong Size

It’s unfortunate, but it’s possible that your air conditioner is not the appropriate size for your home. This can create problems since an undersized unit won’t cool your house effectively, while an oversized one will cool it too quickly, resulting in inadequate dehumidification. Unfortunately, the cause of this issue is often salespeople who don’t know or don’t take the time to accurately determine the appropriate size of the AC unit required for your home.

SOLUTION: It’s important to research and choose a reputable HVAC company with a good customer satisfaction track record. Look for a company that offers a variety of options and can help you choose the right size unit for your home based on your specific needs and budget. Be sure to get multiple quotes and compare them carefully before deciding.

10. Air Conditioner Keeps Tripping the Circuit Breaker

Central air conditioners require a significant amount of electricity, and your home’s electrical system must be able to handle the load. If your AC keeps tripping the circuit breaker, it’s drawing more amps than the breaker’s rating, causing it to trip and preventing a potential fire hazard from an electrical overload.

SOLUTION: If your central air conditioner keeps tripping the circuit breaker, it’s important not to keep resetting it, as it could be a sign of a more serious issue. Start by checking the air filter and cleaning the outside condenser unit. If the problem persists, it’s likely a refrigerant leak or a failed component such as the motor, compressor, capacitor, or wiring. These issues require the expertise of a qualified AC technician for repair. Ignoring the problem could lead to more damage and potentially hazardous situations, so addressing it as soon as possible is best.

Folks, let me tell you regular air conditioner maintenance is key to keeping your cool during the sweltering summer months. But what happens when your air conditioner isn’t getting regular maintenance? Well, you’re setting yourself up for trouble, my friend. Neglecting your AC system leads to inefficiencies, higher electric bills, and poor indoor air quality. You don’t want to be caught off guard by an inconvenient and costly breakdown, do you? No, you want to take control and protect your investment by scheduling regular maintenance. Not only will it keep your warranty valid, but it will also extend the lifespan of your AC unit. Remember, maintenance is the key to long-lasting performance.

In addition, if you’re experiencing problems with your air conditioner or need a new system, Hillside Oil Heating & Cooling is here to help. Our team of experts can diagnose and repair any AC issues or help you choose the right system for your home’s needs. Contact us today to schedule maintenance or discuss your AC repair or replacement options.

Call us today and we’ll make your AC Right!

CALL US NOW AT 302-738-4144