Why Is My Air Conditioner Not Turning On?

As the summer heat sets in and people need to start cooling their homes and offices again, they may notice issues with their air conditioner. Several variables can affect an AC unit’s performance, and the ability to identify the problem before getting professional AC repair can help save time and money.

A malfunctioning thermostat, clogged drain, electrical problems, and internal shut-offs are common causes of an air conditioner not turning on. In some cases, DIY repairs can fix these simple issues. In more complex cases, a professional inspection and repair by a licensed HVAC technician may be necessary.

DIY Air Conditioner Troubleshooting

Before scheduling a professional air conditioner inspection, you may want to perform a little troubleshooting. Doing so may help you avoid costly repairs, and if a professional repair is necessary, you may be able to help them identify the problem faster.

These are some of the components to inspect before consulting a professional:

● Check air filters and replace them if they are dirty or clogged
● Ensure that thermostats are functioning properly and are correctly powered
● Verify that no circuits have tripped, which can result in a lack of power
● Inspect your outdoor condenser for signs of damage
● Check vents to identify potential blockages

Some of these issues can be quickly resolved without expert intervention. DIY troubleshooting is an effective way to inspect your system without paying for a service call that may be unnecessary if the issue isn’t too serious.

In many cases, your frustration with an air conditioner that is not turning on may prompt a call to a licensed professional immediately. But before you schedule an inspection, you should explore troubleshooting solutions to help save time and money.

After conducting your inspection, you may have resolved the issue, though, in some cases, your air conditioner may require more substantial repairs that only a licensed technician can perform.

The Most Common Reasons an Air Conditioner Won’t Turn On

Depending on your AC unit’s age and condition, several common factors can cause malfunction and require professional repair. These may include but are not limited to:

A malfunctioning thermostat: This is one of the most common issues and should be the first component you inspect. If the thermostat is not powered, your AC unit will not function, so ensure that no fuses are damaged or blown, the batteries are charged, and the settings are correct if your air conditioner is not turning on.

Refrigerant levels: Low refrigerant levels are often caused by leaks in your condenser coil and will require a professional inspection and repair.

Blocked air filters: If filters are not regularly changed, they can become clogged and impact an air conditioner’s performance. Clogged air filters make systems work harder to cool a space and can lead to a breakdown over time.

Capacitor failure: Your HVAC system’s motor starts operation with a capacitor. One capacitor will provide the necessary voltage to start your system, and another keeps it running. If either of these is malfunctioning, it can prevent your air conditioner from turning on.

Seasonal impacts: During colder months, when your fan is not blowing, it can accumulate dirt and other particles that keep it from operating correctly.

Age: HVAC systems typically last around twenty years, and depending on the age of your unit, it may be time to replace the condenser unit.

Capacity: Air conditioning systems are designed to cool spaces depending on size. A system that is too small to cool a property will be constantly overworked and prone to breaking down. This can also cause high utility bills and require installing a properly sized unit.

Some of these issues require a professional inspection and repair. Conducting routine maintenance and inspections can help ensure proper operation in every season.

Signs You Need an AC Repair

If your AC is blowing warm air, won’t turn on, or is not operating efficiently, you may need a professional inspection and repair. Because HVAC systems have various components, including mechanical and electrical elements, troubleshooting and repairing them can require specialized tools. While some issues can be resolved with DIY solutions, always trust a licensed professional with more complex AC repairs.

If your air conditioner makes a clicking noise when you try turning it on, it’s often a sign that you need a professional repair as this is likely an electrical issue. A licensed professional should repair any electrical malfunctions that pose a severe electrocution risk.

Another indication that you may need a professional repair is higher-than-average utility bills. This can be caused by an undersized unit struggling to cool larger spaces, clogged filters, and blocked condensation drain lines.

Developing a comprehensive maintenance schedule can also help identify the cause of a malfunction. Many professional HVAC technicians recommend changing air filters at least once a month and can help design and implement a maintenance schedule based on your space.

If you notice water dripping from your AC unit, it may signify that your condenser lines are clogged and need repair. Having an HVAC system that properly cools your home or office during the warmer months is essential, so don’t wait too long to call in a professional.

If You Still Can’t Get Your AC to Turn on, Call the Pros!

After checking all of these common causes of an air conditioner not turning on, it may be time to get a professional opinion.

Dave Lane’s Hi-Tech Mechanical Inc. takes pride in providing efficient, quick, and reliable solutions. Call 713-489-5855 to speak to our dedicated team about scheduling a consultation or chat with us online to discuss your specific needs.

With more than three decades of service to the greater Houston area, we’re your trusted partner for all HVAC repairs, installations, or inspections. You don’t have to suffer from an underperforming air conditioner this summer, call now!