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5 Signs Your Air Ducts Might Be Leaking Air
5 Signs Your Air Ducts Might Be Leaking Air
16Nov 2025

When your HVAC system is running, you expect all the conditioned air to reach your rooms—not leak out behind the walls or into the attic. Unfortunately, leaking air ducts are one of the most common and most overlooked causes of high energy bills, poor indoor comfort, and unnecessary strain on your system. At Purified Air, we specialize in professional air duct repair, and we know exactly what to look for when your system isn’t performing the way it should.

Below are five clear signs your air ducts may be leaking air and why you should contact a trusted HVAC company as soon as you notice them.

1. Your Energy Bills Suddenly Spike

One of the earliest warning signs of leaking ductwork is a noticeable increase in energy bills. When air escapes through gaps, cracks, or loose connections, your HVAC system has to work twice as hard to deliver the temperature you set. That extra effort translates into higher monthly costs.

5 Signs Your Air Ducts Might Be Leaking Air

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El Gallo

Purified Air Heating and Air Conditioning exceeded my expectations with their outstanding service near Highland Park. Roman, the technician who visited my home, was not only highly skilled but also courteous and approachable. He took the time to explain everything in detail, ensuring I understood the work being done and the associated costs. His professionalism and the high quality of his work made the entire experience seamless and stress-free. I highly recommend Purified Air for anyone in need of top-notch HVAC services.

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Conch Kail

Purified Air did a fantastic job with our new HVAC installation. The team was professional, efficient, and ensured everything was set up perfectly. Our home is now comfortable and the air quality has improved significantly. Highly recommend their services

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Mayritas World

I recently had my AC repaired by Purified Air Heating and Air Conditioning, and I couldn’t be happier with the service. The technician was prompt, professional, and knowledgeable. They quickly diagnosed and fixed the issue, restoring cool air to my home in no time. I highly recommend their services to anyone in need of HVAC repairs. Thank you, Purified Air, for your excellent service!

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Juan Lara

After hearing great things from my neighbor, I decided to try Purified Air Heating and Air Conditioning for a heating system check-up. They did not disappoint. The team was courteous, on time, and very knowledgeable. It’s clear why they came so highly recommended, and I’ll be sharing my positive experience with others in the neighborhood

If nothing in your household has changed—no new appliances, no change in thermostat habits, and no added square footage—but your energy bills keep climbing, leaking ducts may be the culprit.

2. Rooms That Are Harder to Heat or Cool

Do you have one room that feels too warm in the summer or too cold in the winter compared to the rest of the house? Uneven temperatures throughout your home are a classic signal that conditioned air isn’t reaching its intended destination.

Leaking ducts divert airflow away from certain rooms, leaving them uncomfortable no matter how long the system runs. Instead of adjusting the thermostat repeatedly or overworking the system, the real solution is proper air duct repair in Highland Park from a qualified technician.

3. Excess Dust or Worsening Allergy Symptoms

Leaky ducts don’t just let air escape—they let unfiltered air in. If your duct system pulls air from dusty attics, crawl spaces, or wall cavities, all that debris ends up cycling through your home. You may begin noticing:

  • More dust accumulation on furniture
  • Allergy or asthma flare-ups
  • Musty or unpleasant odors
  • More frequent air filter replacements

When contaminants bypass the filtration system due to duct leaks, the health of your indoor air takes a serious hit. An experienced HVAC company in Eagle Rock can pinpoint the leaks and seal them properly to restore clean, breathable air.

Our Services

We provide expert heating solutions, including installation, repair, and maintenance. Our team ensures energy-efficient systems for maximum comfort.

4. Weak or Reduced Airflow from Vents

If the airflow coming from your vents feels weak—especially in areas farther from the HVAC unit—this is another strong indication that air is escaping before it reaches the vent.

Leaks reduce the pressure inside the ducts, making it impossible for the system to deliver the airflow needed to heat or cool your home efficiently. Professional testing and sealing can restore proper air pressure and improve system performance.

5. Your HVAC System Runs Constantly

A system that rarely turns off is a sign something is wrong. When air leaks out, your HVAC unit struggles to hit the thermostat temperature and ends up running longer than it should. Over time, this leads to increased wear and tear, reduced lifespan, and potentially costly repairs. Having your ductwork inspected early can prevent small leaks from turning into major damage.

Why Professional Air Duct Repair Matters

DIY tape and quick fixes won’t solve duct leakage. Proper repair requires the right tools, training, and diagnostic equipment. At Purified Air, we evaluate the entire system, locate every leak, and ensure your ducts are sealed, insulated, and functioning efficiently. The result is lower bills, better comfort, cleaner air, and a healthier HVAC system.

Call Purified Air Today

If you’ve noticed any of these warning signs, your ducts are likely wasting energy and costing you money. Don’t wait—schedule a professional air duct inspection with Purified Air today. Our experienced team is ready to restore comfort, efficiency, and air quality to your home.

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