Understanding why your AC unit has been running nonstop can help prevent skyrocketing energy bills and wear and tear on the system. This constant run cycle can also indicate underlying issues that could turn into costly repairs if you don’t address them promptly. In this guide, Oasis Heating, A/C, and Refrigeration will walk you through the primary reasons your AC is constantly running and what you can do about it.
How To Know If Your AC Is Constantly Running
The most obvious sign that your AC is running constantly is the unit’s persistent hum without a break. You might also notice a spike in your energy bills or feel like your home isn’t as cool as it should be. If the temperature on your thermostat never seems to reach the setting you’ve chosen, even though the unit is running nonstop, you’ll need to investigate further.
Why a Constantly Running AC Is an Issue
A constantly running AC is more than just an annoyance. It can lead to higher energy costs, increased wear and tear on the unit, and shorten your unit’s lifespan.
Additionally, your AC is most likely not cooling your home efficiently despite the constant running, which means your home may still feel uncomfortably warm. Addressing this issue promptly can save you money and discomfort.
Reasons Your AC Could Be Constantly Running
There are several reasons why your air conditioner might be running continuously. Understanding these causes can help you identify solutions and determine whether you need professional help.
You Need to Replace the Air Filter
A dirty or clogged air filter can severely impact your AC’s performance. When the filter experiences a blockage, air cannot flow freely through the system, causing the unit to work harder and run longer to cool your home. Cleaning or replacing the air filter is a simple, cost-effective solution that can make a significant difference in your AC’s efficiency. Keeping your air filter clean ensures optimal airflow and helps your AC run more efficiently.
Experts recommend checking your air filter monthly and replacing it every one to three months, depending on usage and whether you have pets or live in an area with high pollen levels.
Issues with the Thermostat
Your thermostat plays a crucial role in regulating your home’s temperature. A malfunctioning thermostat could cause your AC to run continuously. Common thermostat issues include incorrect settings, dead batteries, or faulty wiring.
First, double check your thermostat and set it to the correct temperature and mode. If it uses batteries, replace them to ensure the unit works properly. If these simple fixes don’t resolve the issue, you’ll need to consult a professional to inspect and possibly replace the thermostat.
Improper Air Flow
Proper airflow is essential for your AC to function efficiently. Blocked vents, closed dampers, or obstructions around the outdoor unit can restrict airflow, causing the system to work harder and run longer. Open all vents and clear them of obstructions, and check for any debris around the outdoor unit.
Regular maintenance, such as cleaning the vents and ensuring there are no blockages, can help maintain proper airflow. If you’re still experiencing issues, a professional can perform a more thorough inspection to identify and resolve airflow problems.
The Evaporator Coil Is Frozen or Dirty
The evaporator coil, which you can find inside the indoor unit, is responsible for absorbing heat from your home. If the coil is frozen or dirty, it can’t do its job effectively, leading to an overworked AC. Signs of a frozen coil include ice buildup on the unit or reduced airflow from the vents.
To address this issue, turn off your AC and allow the coil to thaw completely. If the coil looks dirty, give it a good cleaning. Finally, ensure your air filter is clean and there are no airflow obstructions. If the problem persists, call a professional to inspect and clean the coil thoroughly.
Refrigerant Levels Are Low
Low refrigerant levels can cause your AC to run continuously as it struggles to cool your home. This is often due to a leak in the system, which can result in insufficient cooling and increased energy consumption. Signs of low refrigerant include hissing noises from the unit, reduced cooling capacity, or ice buildup on the refrigerant lines.
If you suspect low refrigerant levels, contact a professional. They can locate and repair any leaks, recharge the system with the appropriate amount of refrigerant, and leave your AC working efficiently.
Your AC Unit Is Too Old
An aging AC unit may simply lack the efficiency and power to adequately cool your home, leading it to run continuously. Most air conditioners have a lifespan of about 10-20 years. If your unit is approaching or has surpassed this age, it might be time to consider a replacement.
Upgrading to a modern, energy-efficient model can provide better cooling performance, lower energy bills, and reduce the likelihood of your AC running non-stop. Consult with a professional to determine the best replacement option for your home.
The Unit Is the Wrong Size for Your Home
One of the most common reasons for a constantly running AC is that it’s simply the wrong size for your home. An AC unit that is too small will struggle to cool your home effectively and run for long periods of time in order to cool your home. Conversely, an oversized unit may cool your home too quickly, causing it to cycle on and off repeatedly, which leads to the same issue.
To determine if your unit is the right size, consult with a professional who can perform a load calculation. The professional will assess various factors such as the size of your home, insulation levels, and climate. If your unit is the wrong size, replacing it with a properly sized unit can solve the problem.
When To Call a Professional
While you can resolve some AC issues with simple maintenance tasks such as cleaning the filter, others require the expertise of a professional. If you’ve tried the above solutions and your AC still runs constantly, you’ll need to call in the experts. Oasis Heating, A/C, and Refrigeration can help diagnose and fix any issues, ensuring your home stays comfortable and your energy bills remain manageable.
Regular AC maintenance is essential for homeowners to ensure their system operates efficiently and effectively. By understanding the reasons your AC might be running constantly and addressing these issues promptly, you can avoid costly repairs and enjoy a more comfortable home environment.
If you’re experiencing persistent AC issues, don’t hesitate to contact Oasis Heating, A/C, and Refrigeration for professional assistance. We are northern Virginia’s go-to source for air conditioning repair services and other maintenance needs. Our team is dedicated to helping you keep your home cool and comfortable year-round. Visit our website to learn more about our services and schedule an appointment today.
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