If your air conditioner is blowing warm air or making strange noises, you already know something’s not right. But what exactly is going on? Is it a quick AC repair, or are you looking at a full replacement? Before you start stressing about costs or worst-case scenarios, let’s break down what could be causing the issue and how TemperaturePro can help.
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Why Is Warm Air Coming Out of My Vents? 5 Possible Reasons
When you turn on your AC, you expect cool air, not lukewarm air that feels like someone handed you a soda that’s been sitting in the car all afternoon. If your cooling system is blowing warm air, there’s an underlying issue at play. Here are some of the most common reasons this happens and what you can expect our HVAC technicians to do:
1. Your Thermostat Isn’t Set Correctly
We know—it sounds too simple, but this is a common air conditioning problem. If your thermostat is set to “heat” or just “fan,” your AC won’t turn on like it should. Even if it’s set to “cool,” the temperature might be too high, or the system might not be responding at all. If the thermostat isn’t communicating with your HVAC system, we can recalibrate it or replace it so everything’s working together again.
2. Low Refrigerant Levels
Refrigerant is what your air conditioner uses to absorb heat from inside your home and release it outside. When levels get low—usually because of a leak—your system can’t cool the air effectively. You might notice warm air blowing or the AC running nonstop without results. We’ll find and fix the leak, then recharge the refrigerant so your system works efficiently and your home feels cooler again.
3. Dirty Air Filter or Evaporator Coils
If you haven’t changed your air filter in a while, or if your evaporator coils are covered in dust and grime, your AC can’t breathe. Poor airflow means your system has to work harder, cools less efficiently, and uses more energy. That can leave you with hot spots in your home and higher utility bills. We’ll clean your coils, replace the filter, and make sure the whole system is circulating air the way it’s supposed to.
4. Compressor or Electrical Problems
Your compressor is what keeps the cooling process going. If it’s damaged or failing, your AC won’t be able to cool your home. Sometimes the issue is electrical—like a bad capacitor, a broken contactor, or corroded wires. These problems can cause the system to short cycle, blow warm air, or shut off completely. Our techs will inspect all the key components, fix what’s needed, and make sure your air conditioning system is running safely again.
5. Leaky or Disconnected Ductwork
Even if your AC is working perfectly, leaky ducts can waste all that cooled air before it ever reaches your rooms. This happens a lot in older homes or in ductwork that runs through attics or crawl spaces. We inspect your duct system, seal up the leaks, and help improve the airflow so that the air conditioner isn’t cooling empty space—and you're not throwing money out the window.
What’s That Noise? 5 Common AC Sounds and What They Mean
Your air conditioner’s never going to be completely silent—but it shouldn’t sound like a blender full of bolts, either. If your system is suddenly making strange noises, please don’t ignore them! Here are some of the most common AC sounds we hear and the AC repairs that follow.
1. Banging or Clanking
This is almost always a loose or broken part rattling around inside your unit. It could be a fan blade, a disconnected component in the compressor, or something else that’s come out of place. If it keeps running like that, it could lead to bigger and more expensive damage. We shut it down, open it up, and secure or replace the broken parts to protect the rest of your HVAC system.
2. Squealing or Screeching
A high-pitched squeal is often a worn-out belt or motor issue—especially in older AC units. These parts are under constant stress, and if they fail, your system could stop working altogether. We’ll inspect the motor, replace worn belts or bearings, and make sure everything is running smoothly before it turns into a full breakdown.
3. Buzzing
Buzzing typically means something electrical is going on. It may be loose wiring, a failing capacitor, or another issue that’s preventing your system from starting or running properly. Electrical issues should always be handled by a professional HVAC contractor to keep your property safe and your system protected.
4. Clicking
A couple of clicks when your system starts or stops is normal. Constant clicking, though? That could be a problem with the relay, the control board, or the thermostat. If your system won’t turn on or keeps turning on and off, we’ll track down the issue, replace the faulty component, and restore normal operation.
5. Hissing
If you hear a hissing sound, it could mean a refrigerant leak or too much pressure building in the lines. Either one is serious. We’ll locate the source of the leak, make the necessary repair, and recharge the system so it cools properly again, without wasting energy or putting your system at risk.
TemperaturePro Is the HVAC Contractor You Can Trust for Air Conditioning Services in Richardson
As your local HVAC contractor in Richardson, we’re proud to live and work in the same communities we serve. This isn’t just a job for us—it’s where we raise our families, help our neighbors, and take care of the people we see around town every day.
So when your air conditioner stops working or your HVAC system needs attention, we treat it like it’s happening in our own home. Whether it’s a quick AC repair or a bigger issue, we’ll figure out what’s going on, explain everything clearly, and get you on the right path forward. Here’s a little more about us:
- We work on all makes and models, including central air conditioners, heat pumps, and ductless mini splits, so whatever system you have, we can fix it.
- Our technicians are fully licensed, and we have several team members who are NATE-certified, which means they’re recognized as being some of the best in the industry.
- Every technician we send is background checked, drug tested, and trained to treat your time and property with professionalism and respect.
- You’ll always get an honest, upfront quote before any repair work begins, so you’re never caught off guard by surprise costs.
- We have fully stocked trucks so we can complete most AC repairs on the spot and avoid repeat service calls.
And with us, we don’t just fix the problem—we help you avoid the next one. While we’re there, we’ll talk with you about the benefits of routine maintenance and how our ProPlan Maintenance Program can help your system run better, last longer, and save you money on energy and repairs.
ProPlan gives you scheduled service twice a year so we can catch and address minor issues earlier and ensure your HVAC system is ready when you need it most. You also get priority scheduling, waived service fees, and discounts on cooling and heating repair costs. It’s a simple, affordable way to improve your indoor air quality, boost your system’s energy efficiency, and lower your monthly energy bills!
Schedule Your Air Conditioning Repair with TemperaturePro Today
TemperaturePro has been part of the Richardson community for years. We’re local, award-winning, and known for taking care of people, not just equipment.
We’ll always do everything we can to get your existing system back up and running first. But if it’s time to look at a new system due to old age or severe damage, we’ll walk you through your options, keep costs clear and upfront, and replace your system quickly.
Need an HVAC contractor in Richardson, TX, who you can trust with your home and your time? Schedule an appointment today with TemperaturePro!
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