Signs of a Commercial AC System Failing

June 24, 2024 7:56 pm Published by Leave your thoughts

Maintaining a comfortable indoor environment is essential for businesses, and a functioning air conditioning (AC) system is crucial for achieving this. However, like any mechanical system, commercial AC units can experience wear and tear over time, leading to malfunctions and failures. Recognizing the signs of a failing commercial AC system is vital for prompt repairs and avoiding costly downtime. In this guide, we’ll explore the common signs that indicate a commercial AC system is failing and provide insights into what to do when these signs are observed.

Understanding Commercial AC Systems

Importance of Commercial AC Systems

Commercial AC systems are responsible for cooling large spaces, such as offices, retail stores, restaurants, and industrial facilities. They play a critical role in maintaining a comfortable working environment for employees and customers while also preserving the integrity of products and equipment.

Components of Commercial AC Systems

Commercial AC systems consist of several components, including compressors, condenser coils, evaporator coils, refrigerant lines, fans, and thermostats. Each component plays a vital role in the cooling process and overall performance of the system.

Signs of a Failing Commercial AC System

Insufficient Cooling

One of the most obvious signs of a failing commercial AC system is insufficient cooling. If the indoor temperature is consistently higher than the thermostat setting, despite the AC running continuously, it may indicate a problem with the compressor, refrigerant levels, or airflow.

Poor Airflow

Poor airflow from the vents can result from blocked or dirty air filters, ductwork issues, or malfunctioning fans. Restricted airflow not only reduces comfort but also strains the AC system, potentially leading to compressor failure or other issues.

Strange Noises

Unusual noises, such as grinding, rattling, or banging, coming from the AC unit may indicate mechanical problems or loose components. Ignoring these noises can result in further damage to the system and costly repairs.

Foul Odors

Foul odors emanating from the vents when the AC is running could indicate mold or mildew growth within the system or ductwork. This not only affects indoor air quality but also signifies potential moisture-related issues that need to be addressed promptly.

Frequent Cycling

Frequent cycling, where the AC turns on and off frequently, can be a sign of various issues, including thermostat problems, refrigerant leaks, or compressor malfunction. This not only increases energy consumption but also reduces the lifespan of the equipment.

Water Leaks or Moisture

Water leaks or moisture around the AC unit or indoor vents may indicate condensate drain blockages, refrigerant leaks, or frozen evaporator coils. These issues can lead to water damage, mold growth, and compromised system efficiency.

What to Do When Your Commercial AC System is Failing

Schedule Professional Inspection

If you notice any of the signs mentioned above or suspect that your commercial AC system is failing, schedule a professional inspection as soon as possible. A qualified HVAC technician can diagnose the problem accurately and recommend appropriate repairs or replacements.

Regular Maintenance

Preventive maintenance is essential for keeping commercial AC systems in optimal condition and preventing premature failures. Schedule regular maintenance visits with a licensed HVAC contractor to clean, inspect, and tune up your AC system.

Address Issues Promptly

Don’t ignore minor issues or signs of trouble with your commercial AC system. Addressing problems promptly can prevent them from escalating into more significant and costly repairs, as well as minimize downtime and disruption to your business operations.

Consider Replacement if Necessary

If your commercial AC system is old, inefficient, or experiencing frequent breakdowns, it may be more cost-effective to replace it with a new, energy-efficient model. Consult with your HVAC contractor to determine the best course of action based on your budget and needs.


A failing commercial AC system can disrupt business operations, compromise indoor comfort, and lead to costly repairs or replacements. By recognizing the signs of a failing AC system and taking proactive measures to address issues promptly, businesses can ensure uninterrupted cooling and maintain a comfortable environment for employees and customers. Don’t wait until your AC system breaks down completely—schedule regular maintenance, address issues promptly, and invest in professional repairs or replacements when necessary to keep your commercial space cool and comfortable year-round.

Need HVAC Services in Bridgeport, CT?

Locally owned and established in 1993, BLM Refrigeration Heating & Air Conditioning has been providing excellent service and a customer-friendly approach for over 20 years! At BLM Refrigeration Heating & Air Conditioning, we take pride in offering prompt, high-quality repairs for our customers. For every job we take on, we will send our specialists out to the site and determine what services need to be provided. Our services include air conditioning installation, repair, service, commercial air conditioning services, furnace repair, heating system installation, repair, service, and more! Call today!

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