From Coolant Leaks to Compressor Failures: Common AC Repair Issues and Solutions

Air conditioner units

When the sweltering heat of summer hits, the last thing you need is for your air conditioning to fail. Yet, it happens more often than you might think. Understanding common AC repair issues and solutions can help you identify problems early and prevent costly breakdowns.

In this guide, we’ll explore some of the most frequent issues homeowners encounter with their AC units and discuss why professional help, like that provided by Majano Heating & AC, LLC, is essential for prompt and reliable repairs.

Identifying the Problem

Before exploring the solutions, it’s crucial to accurately diagnose the issue with your AC unit. Here are some common signs of trouble to look out for:

  • Weak Airflow:If you notice reduced airflow coming from your vents, it could indicate a clogged air filter, blocked ducts, or a malfunctioning blower motor.
  • Warm Air: When your AC is blowing warm air instead of cool, it may signal a refrigerant leak, compressor failure, or thermostat problems.
  • Strange Odors: Foul odors emanating from your vents could be a result of mold or mildew buildup in the ductwork or a dirty air filter.
  • Strange Noises: Unusual sounds like grinding, hissing, or banging noises are often indicative of mechanical issues within the AC system, such as a malfunctioning compressor or worn-out parts.

Common AC Repair Issues and Solutions:

Coolant Leaks:

Coolant leaks are a common problem that can lead to inefficient cooling and potential damage to your AC unit. Signs of a coolant leak include decreased cooling performance, ice buildup on the evaporator coils, and hissing noises coming from the unit.


If you suspect a coolant leak, it’s essential to contact our professional HVAC contractors to locate and repair the leak. They will recharge the refrigerant and ensure proper sealing to prevent future leaks.

Compressor Failures:

The compressor is the heart of your AC system, responsible for circulating refrigerant and cooling your home. When the compressor fails, your AC won’t be able to produce cold air, leading to discomfort indoors.


Replacing a faulty compressor is a complex task best left to trained professionals. Our technician will assess the extent of the damage and either repair or replace the compressor as needed to restore your AC’s functionality.

Clogged Air Filters:

Dirty or clogged air filters restrict airflow, reducing the efficiency of your AC system and putting a strain on its components. This can lead to increased energy consumption and potential damage over time.


Regularly check and replace your air filters every one to three months, depending on usage. This simple maintenance task can improve airflow, enhance indoor air quality, and prolong the lifespan of your AC unit. You can also get our professional AC maintenance service to ensure optimal performance.

Thermostat Issues:

A malfunctioning thermostat can cause erratic temperature control and uneven cooling throughout your home. Whether it’s due to faulty wiring, sensor problems, or outdated technology, addressing thermostat issues is essential for maintaining comfort and energy efficiency.


If you suspect thermostat problems, start by checking the batteries and recalibrating the settings. If issues persist, consider upgrading to a programmable or smart thermostat for precise temperature control and energy savings.

a cozy living room with air conditioner
living room

While some problems may seem minor, attempting DIY fixes can often worsen the situation or pose safety risks. That’s why it’s crucial to enlist the help of experienced HVAC professionals like Majano Heating & AC, LLC. Serving Ponchatoula, Hammond, Covington, and surrounding areas in LA, we offer reliable and efficient AC repair services to keep your home comfortable year-round. Don’t let AC problems ruin your summer—contact our HVAC contractors for expert assistance.