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What to Do if Home AC Not Cooling

Oct 13, 2023 | HVAC Services

If you find your home AC not cooling, don’t panic. There are several reasons why a unit can stop working — some of them you can fix on your own, and others need to be handled by a pro.

Your air conditioner provides comfort and safety for your home and family. That’s why it’s important to know what to do if your unit ever has issues.

Let’s review the reasons why an AC might stop working, how you can troubleshoot a “home AC not cooling” problem, and when you should seek help from a professional technician.

Why Is Your Home AC Not Cooling?

Your air conditioner is a high-value investment, so it can be frustrating when it suddenly stops working. Knowing how to fix minor issues can save you some trouble and get your unit back up and running.

Here are a couple of common reasons why your home AC is not cooling and how you can fix them.

Wrong Thermostat Settings

Is there a chance someone in your home switched the thermostat settings? This is a simple fix.

Double-check that your thermostat is set to cool and your desired temperature. Wait a few minutes and then feel if your vents are blowing out cold air. 

Dirty Air Filter

Your home AC may not be cooling if the filter is full of dirt, dust, pet hair, or other airborne particles. 

Look for yourself by turning off your system and then locating the air filter. You can remove it and check for dirt and clogs. 

Fix the issue by simply cleaning the filter or replacing it. You should check your filter every 30 to 90 days to prevent any future issues.

When to Call a Pro

While you may be able to solve a couple of problems, the more serious issues are for a pro. Call a professional air conditioner technician if you think you may be experiencing the following concerns:

Refrigerant Leak

If you think you have a refrigerant leak, turn off your air conditioner and reach out to a trusted AC tech right away. 

Here are the signs of a leak:

  • Icy buildup on the system
  • Home taking a long time to cool
  • AC runs constantly
  • Hissing noises
  • Chemical smells

Incorrect Size Air Conditioner

If your home AC is not cooling, it could mean your system is under or oversized. 

An air conditioner that is too small works harder to cool your home. A unit that’s too large will not be able to keep your space at a consistent temperature. 

The best way to avoid this issue is to pick the correct size air conditioning system. The right team can help you choose a cooling system that works for your home and your budget. 

Malfunctioning Part(s)

The average homeowner won’t be able to tell if a part such as a blower or coil has stopped working properly. If a quick glance at your unit doesn’t reveal any obvious signs of malfunction, it’s time to call a professional with the right tools for help. 

Your Go-To HVAC Team at Highland AC

If you find your home AC not cooling, there could be many reasons why it’s happening. Some issues, such as a dirty filter or the wrong thermostat setting, you can take care of yourself. Other problems like a refrigerant leak, malfunctioning parts, or incorrect size air conditioner unit need to be handled by a professional.

When you’re looking for trustworthy AC technicians, Highland AC has what you need. Our team strives to provide high-quality services every time. 

Do you need AC repairs? Highland AC is here to help. Request a quote today.

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