When you think of HVAC issues, you might picture a broken furnace or an air conditioner that won’t cool. But one of the most common and costly problems is often hidden out of sight: leaky ductwork. Air ducts are essential to your home’s heating and cooling system, as they move conditioned air to every room. When those ducts develop cracks, holes, or loose connections, your system loses efficiency, your comfort drops, and your energy bills climb.

In this blog, we’ll explore how to spot the signs of duct leaks, what it could be costing you, and how professional ductwork repair can deliver long-term savings.

Common Causes of Duct Leaks

Air duct leaks can form over time due to a number of reasons, including:

  • Age-related wear and tear
  • Poor installation or design
  • Temperature fluctuations causing expansion and contraction
  • Damage from pests or renovations

Homes with ductwork in attics, basements, or crawlspaces are especially vulnerable. These areas are less insulated and more prone to leaks and pressure issues.

Warning Signs You Might Have Air Leakage in Your Ducts

Many homeowners live with leaky ducts without realizing it. Here are a few symptoms to watch for:

  • Uneven heating or cooling across different rooms
  • Weak airflow from vents
  • Rising energy bills despite regular use
  • Dust buildup near vents or around your home
  • Strange noises like whistling or hissing when your system runs

Even if your HVAC unit is working perfectly, leaky duct systems can drastically reduce its performance.

What is it Costing You?

According to ENERGY STAR, the average home loses 20 to 30 percent of its heated or cooled air through duct leaks. That means a large portion of the energy you’re paying for is being lost in your attic or crawlspace, rather than being used in your living space. This loss increases your utility bills and puts extra strain on your HVAC system, potentially shortening its lifespan.

How We Fix It

At Dunes Heating & Air Conditioning, we offer professional duct inspections and sealing services that help restore efficiency and comfort. Here’s what you can expect from our team:

  • Locates problem areas using pressure tests or airflow assessments
  • Seals gaps and connections with industry-grade materials
  • Recommends duct replacements when damage is beyond repair

In some homes, optimizing the duct layout or insulating exposed ducts can further improve performance.

Long-Term Benefits of Duct Sealing

Repairing or sealing leaking ducts is one of the smartest home improvements you can make. Benefits include:

  • Lower heating and cooling costs
  • Improved comfort with consistent room temperatures
  • Cleaner indoor air with fewer allergens and dust
  • Less wear and tear on your HVAC system
  • Better overall efficiency

When your ducts are sealed properly, your system doesn’t have to work as hard, saving you money month after month.

Schedule Your Inspection or Duct Repair in Daniel Island, SC

If your energy bills are rising or your rooms feel unevenly heated or cooled, it may be time for a duct checkup. Contact Dunes Heating & Air Conditioning to schedule a professional inspection. We’ll help you fix leaky ductwork at the source and make your home more comfortable and efficient year-round.