Why Your AC Isn’t Cooling: Troubleshooting Tips for El Paso Homes
June 02, 2025 By: One Way Heating & Cooling
El Paso summers are no joke. When your AC is blowing warm air, or worse, not blowing at all, you feel it fast. The good news? Not every air conditioning problem means a major repair bill. Some issues are surprisingly simple to fix, and knowing what to look for can save you time, stress, and money.
At One Way Heating & Cooling, we’ve helped thousands of El Paso homeowners stay cool and comfortable. If your AC isn’t cooling like it should, here are some practical steps you can take before calling in the pros.
1. Check Your Thermostat Settings First
It might seem obvious, but you’d be surprised how often this is the culprit.
Set to “Cool”: Make sure your thermostat is actually set to "Cool" and not "Fan" or "Heat."
Set the Right Temperature: Your desired temperature should be lower than the current room temperature.
Thermostat Batteries: If your thermostat is battery-powered, dying batteries can cause inaccurate readings or even total failure.
Pro tip: Smart thermostats can sometimes glitch after a power outage or Wi-Fi issue. Restarting them often clears things up.
2. Inspect the Air Filter
Your air filter might be choking your AC’s airflow.
A dirty or clogged filter can block airflow, forcing your AC to work harder and deliver less cool air.
Filters should typically be changed every 30 to 90 days, depending on your usage and whether you have pets or allergies.
If your filter is gray, dusty, or hasn’t been replaced in a while, swap it out. It could make a noticeable difference within an hour.
3. Check the Outdoor Unit (Condenser)
The condenser is the heart of your AC system, and it’s exposed to El Paso’s extreme heat and occasional dust storms.
Make sure it’s not blocked by weeds, leaves, or debris.
Listen for odd sounds, clicking, buzzing, or humming could signal a mechanical issue.
Look for ice buildup on the unit. That may seem counterintuitive, but yes, ice usually means your system is overheating or low on refrigerant.
If your condenser is dirty or iced over, turn off your AC and call a technician before turning it back on.
4. Check the Circuit Breakers
Sometimes, your AC isn’t cooling simply because it’s not getting power.
Go to your circuit breaker panel and see if the breaker labeled “AC” or “HVAC” has tripped.
If it has, reset it, but only once. If it trips again, that points to a bigger electrical issue.
Important: Never force a breaker or try to “test” the AC by flipping breakers repeatedly. That can cause more damage.
5. Look at Your Air Vents
Even if the AC is technically working, blocked or closed vents can make it feel like your system isn’t cooling.
Make sure all vents in your home are open and unobstructed.
If some rooms are warmer than others, that could be due to duct leaks or poor insulation.
This is especially common in older El Paso homes, where ductwork may not have been designed with modern efficiency in mind.
6. Listen to What Your AC Is Telling You
Strange sounds or smells? Those are warning signs.
Buzzing or rattling can mean loose parts or electrical problems.
Burning smells could indicate overheating components.
Musty odors may point to mold in your ducts or unit.
If your AC seems to be acting strange and not cooling, it’s time to call in an expert before a small issue becomes a big one.
7. Is the Refrigerant Low?
This one requires a professional to check, but it’s a common reason your AC may run but not cool.
Signs of low refrigerant include warm air, ice on the evaporator coil, and hissing noises.
Refrigerant doesn’t just run out, if it’s low, there’s likely a leak.
In El Paso’s heat, a leak can cause your system to lose efficiency quickly and overheat, leading to compressor failure if ignored.
8. Is Your AC the Right Size for Your Home?
If your system has never cooled your home well, it might be too small.
Undersized units run constantly without reaching the target temp.
Oversized units cool too fast, causing short cycling and high humidity indoors.
Both problems mean poor comfort, higher bills, and extra wear on your system. A load calculation by an HVAC expert can confirm whether your system is properly sized.
9. When to Call One Way Heating & Cooling
If you’ve gone through the checklist and your AC still isn’t cooling, or if something just feels “off,” it’s best to get it looked at sooner than later. Delaying service can turn a minor issue into a major repair.
At One Way Heating & Cooling, we’re proud to be El Paso’s trusted HVAC partner. Here’s why our customers keep coming back:
Fast, reliable service with honest, upfront pricing
Certified technicians with deep experience in desert climate systems
Emergency services available, we’re here when you need us
Your Next Steps: Stay Cool, El Paso
You don’t have to sweat it out or guess what's wrong with your AC. With a few simple checks, you can solve common cooling issues on your own. But when it’s time to bring in a pro, One Way Heating & Cooling has your back.
👉 Call us today or book online to schedule an AC inspection or repair. We’ll help you get back to cool comfort, the right way, the One Way.