Key Takeaways

  • Choose HVAC contractors with expertise in various heating and air conditioning systems for comprehensive service.
  • Prioritize cost-effective solutions without compromising on quality or customer satisfaction.
  • Ensure your HVAC contractor offers a wide range of services, including installing, maintenance, and repair, to meet all your heating and air conditioning needs.
Best Concord Furnace and Air Conditioner

In the peak of summer, if you find your air conditioner not blowing cold air but running, it is not only an inconvenience but a signal from your HVAC system to get it fixed before it gets worse. In this article, we’re looking at common reasons behind your air conditioner not working and maintenance advice to ensure your indoor unit keeps your space comfortably cool. 

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Identifying the Problem

The key to finding the perfect solution behind your air conditioner not cooling or having too little airflow is identifying what exactly is going wrong. Let’s look at some of the most common issues:- 

Is your Air Filter Dirty?

A lot of times, the simplest issues could be leaving the biggest impact on your HVAC systems. A dirty air filter restricts the overall airflow, leading to reduced cooling efficiency and potentially making to evaporator coil freeze.

In general, it is advised to replace your air filter for 1-3 months to prevent this issue from worsening. 

Is your Refrigerant Leaking?

A Refrigerant leak is relatively less common but it poses a serious threat to your HVAC unit’s cooling efficiency. Some of the most common signs of such AC leaks include ice formations on the condenser coils and a declined performance.

However, refrigerants must not be handled or inspected without professional support due to the complexity and potential hazards related to it.

Is something wrong with your Capacitors, Wiring, or Motors?

Failures can be within the unit’s electrical system as well – they could be bad capacitor malfunctions, wiring issues, or motor defects that are not allowing your air conditioner unit to function properly. Common signs of electrical complications include the unit struggling to start, and unexpectedly shutting down.

Getting your air conditioners inspected timely and proactively is key here to avoid larger damages. 

Condenser Coil Congestion

The condenser coil, which is located within the air conditioner unit’s outdoor section is one of the most important parts of the air conditioner since it takes out the heat from your house. However, if the AC coil starts collecting dirt and other debris, it can impede its operation, leading to inadequate or no cooling.

Make sure that you regularly get your condenser coil cleaned to increase its effectiveness and longevity. 

Beyond the Basics

There could be more than basic issues that are affecting the performance of your AC – from drain pan clogs, faulty wiring, bad capacitor, and thermostat inaccuracies to circuit breaker issues and more. Get your AC unit checked by a professional from time to time to make sure that they’re all working in prime condition. 

Pro Tips to Keep Your AC Cooling Perfectly

Regular Air Filter Replacement

Your air conditioning unit’s air filter serves as a barrier against airborne pollutants, such as dust, pollen, and animal fur. As time goes by, these AC filters can accumulate debris, leading to a lowered airflow and system efficiency. This issue forces your air conditioners to exert more effort, potentially causing them to overheat and fail prematurely.

Here’s how you can address these issues:

  • Inspect or get your air filter inspected by an HVAC technician every 1-2 months, particularly during periods of heavy use.
  • Change the filter every 1-3 months, according to the specifics of your living environment as it can differ based on pet ownership, allergies, or geographical conditions.

Routine Professional Inspections

Scheduled expert evaluations are key in identifying potential issues with your AC that a typical homeowner may not notice or ignore. With the help of these inspections, technicians can identify issues with the coolant levels, electrical components, and your AC’s fan motor and also check the overall mechanical health of the air conditioning system.

Outdoor Unit Maintenance

The external component of your air conditioner, or the condenser, is essential for expelling heat from your home. Its efficiency can be significantly compromised by debris, leaves, and other blockages.

To maintain optimal airflow:

  • Routinely clear any debris around the outdoor AC unit.
  • Trim foliage to maintain a minimum of a 2-foot clearance around the condenser
  • Ensure no objects are obstructing the unit’s vents and evaporator coil.

Condensate Drain Checks

The condensate drain is crucial for eliminating the moisture that your air conditioner takes in from the atmosphere. If the condensate drain is blocked, it can lead to water backup and can potentially damage your HVAC system and even property and lead to mold formation if worsened. Here’s how you can avoid these problems:

  • Regularly inspect the drain for clogs and clear them immediately.
  • Think about getting a condensate pump installed by an HVAC technician to allow the air conditioning system to remove moisture. 


When your air conditioner is working but not blowing cold air, it is a sign that it needs immediate attention. From simple fixes like air filter replacements to more complex issues that need professional intervention, understanding the root causes is key.

Comfort Union is here to ensure your comfort for all air conditioner needs – whether it is troubleshooting tips, regular maintenance services, or emergency AC repairs, we handle it all. Browse our site to schedule a service or learn more about maintaining your AC system for peak performance.

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Various types of heating and air conditioning equipment: furnaces, heat pumps, air conditioners, and ductless mini-split systems.
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