Picture this: It’s a sweltering day in Florida, and instead of a refreshing blast of cool air, your AC is blowing warm air. Frustrating? Absolutely. But don’t panic—you’re not alone, and many hot air issues have simple solutions.
In this guide, we’ll explore why your AC is blowing hot air and how to troubleshoot the problem. Plus, we’ll explain when it’s time to call the experts at Quality Comfort Air Conditioning and Heating Inc. for fast, reliable repair service across Melbourne, Palm Bay, Viera, and beyond.
Before diving into repairs, it’s important to understand the potential causes. The most common issues include:
It might seem simple, but your thermostat could be to blame. If it’s set to “heat” or the fan is set to “on” instead of “auto,” your AC might push warm air into your home.
Fix:
Make sure the thermostat is set to "cool" mode, at your desired temperature, and that the fan is set to “auto.”
Clogged air filters or blocked vents can reduce airflow, forcing the system to work harder, sometimes blowing hot air instead of cool.
Fix:
The outdoor condenser releases heat from your home. If it's dirty, blocked, or broken, your system can’t cool properly.
Fix:
Low refrigerant is a serious issue. It impacts the cooling cycle and can cause ice buildup, compressor damage, or total shutdown.
Do not attempt to add refrigerant yourself. This requires EPA-certified handling. Call us to safely locate and repair the leak, then recharge the system.
Now that you know what to look for, here’s how to fix it.
Always check the basics first. Set your thermostat to:
If your thermostat is outdated, consider upgrading to a programmable or smart thermostat for better control and energy efficiency.
Dirty filters can choke your system.
How often? Every 30–90 days, more often if you have pets or allergies.
A clean filter:
Regularly check your outdoor AC unit for:
Maintenance Tip: Keep 2–3 feet of space around the unit clear.
Only a licensed HVAC technician can:
Our team at Quality Comfort uses advanced detection tools and EPA-compliant practices.
Prevent future hot air problems by keeping your system clean and well-maintained.
We recommend annual AC tune-ups, ideally in early spring. During inspections, our techs will:
Home maintenance can only go so far. Here’s when it’s time to call us:
If the AC still blows warm air after replacing the filter, checking the thermostat, and clearing airflow, the problem likely lies deeper—possibly with the compressor, control board, or refrigerant circuit.
Some issues should only be handled by a trained technician, including:
Attempting DIY repairs may void your warranty or create costly damage.
A malfunctioning AC system doesn’t have to ruin your summer. With these tips, you can diagnose common causes of hot air and know when to call for help.
Let Quality Comfort Air Conditioning and Heating Inc. keep your home cool, safe, and energy-efficient—all year long.
📞 Call today at 321-242-2513
📍 Serving Melbourne, Palm Bay, Viera, Cocoa, Rockledge, and all of Brevard County
🔹 How do I fix my AC that blows hot air?
Check the thermostat, replace the air filter, inspect for ice or blocked airflow, and clean the outdoor unit. If the issue persists, call a pro.
🔹 Why is my air conditioner running but not cooling the house?
The most common causes include dirty filters, low refrigerant, or a faulty compressor.
🔹 Why is hot air coming from my vents?
It could be due to low refrigerant, a failed capacitor, ductwork issues, or thermostat misconfiguration.
🔹 How often should I change my air filter?
Every 30–90 days, depending on usage and household conditions.
🔹 What are the signs of a refrigerant leak?
Ice on coils, hissing sounds, reduced cooling, or longer run times.