Why is My AC Unit Not Blowing Cold Air in the Summer
Come late Spring and Summer near Loganville, GA, we are all going to experience hot days and start using our residentail air conditioner more often. You’ve set your thermostat to cool, expecting that refreshing blast of cold air but instead, warm air starts blowing through the vents. Not fun. Before you assume the worst (or start sweating through a long wait for a HVAC technician), here are a few simple things you can check on your own when you are experienceing no cool air.
These quick steps might save you time, money, and a little stress. And if they don’t fix the problem, you’ll at least be better prepared when you do give us a call.
Need help now? Schedule a service call by calling us at 770-273-9090 or contact us online with any questions in and around Loganville, GA.
If you find your AC unit is not blowing cold air like it should, it’s time to try check some DIY troubleshooting before you call the pros at Keep Smiling 😊.
1. Check the Thermostat Settings
Let’s start with the easiest fix first.
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Is it set to “cool” or “auto”? Sometimes it gets bumped to “heat” or “fan” without you realizing.
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What’s the temperature setting? Make sure it’s set below the current room temperature.
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Fresh batteries? If your thermostat runs on batteries, low power can mess with signals to your system.
Pro tip: Try turning it off for a minute, then back on. Sometimes a quick reset can fix glitches.
2. Look at the Air Filter
When’s the last time you changed your air filter?
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A dirty or clogged filter can block airflow and cause your system to blow warm air—or worse, shut down completely.
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If it looks grey, dusty, or caked with lint, swap it out. Filters are cheap, and your system will thank you.
Pro tip: Replace your filter every 1–3 months, depending on pets, allergies, or how often your system runs.
3. Peek at the Outdoor Unit (Condenser)
Your AC’s outside unit plays a big role in cooling your home.
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Is it running? If it’s silent or clicking but not spinning, that’s a sign of trouble.
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Is there debris or leaves blocking it? Clear out anything that might be clogging the airflow.
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Ice buildup on the coils? That could mean low refrigerant or airflow problems.
Note: If the outside unit isn’t running at all, check the breaker (more on that below).
4. Check Your Breakers
Sometimes, all it takes is a flipped switch.
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Go to your electrical panel and look for the breaker labeled “AC,” “air conditioner,” or “HVAC.”
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If it’s in the middle or “off” position, flip it fully off, then back on.
Caution: If it keeps tripping, don’t force it. That’s a sign of an electrical problem that needs a professional.
5. Make Sure the Vents Are Open and Clear
It might sound obvious, but blocked vents can trick you into thinking something’s wrong with your AC.
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Are furniture, curtains, or rugs covering your vents?
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Are all the supply and return vents open throughout the house?
Proper airflow is key to keeping your system balanced and efficient.
6. Listen for Any Strange Noises
A humming or buzzing sound might mean the fan is trying to run but something’s off. A clanking or grinding sound could point to a broken part inside the system.
If your unit is making odd noises and blowing warm air, turn it off to avoid further damage and give us a call.
❌ Still Blowing Warm Air? Time to Call the Pros at Keep Smiling
If you’ve checked all of the above and your Atlanta area home still isn’t cooling down, don’t worry—you’ve done the right thing by trying these steps first. When you call us, just let us know what you’ve already checked. It helps us get a clearer picture and often leads to a faster fix.
📞 When You’re Ready, We’re Here to Help
Some AC issues need a licensed HVAC technician, especially things like low refrigerant, electrical faults, frozen coils, or failing motors. If your system still isn’t working after going through these checks, give us a call at 770-273-9090 or fill out some information online and we’ll get your home back to cool and comfortable in no time.
Serving Loganville, Gainesville and Sugar Hill Areas
Until then, maybe treat yourself to an ice-cold lemonade—you’ve earned it.
