Ductwork Repair & Installation in South Florida

Leaky or damaged ducts waste energy and reduce comfort. Our ductwork specialists restore proper airflow to every room in your home.

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Your Ducts Are the Lungs of Your HVAC System

Even the most efficient AC unit can't perform well if your ductwork is leaking, blocked, or improperly sized. Conditioned air that escapes into your attic before reaching your living spaces is wasted money — and wasted comfort.

Excel Mechanical Contractors's ductwork specialists inspect, seal, repair, and replace residential and commercial duct systems throughout South Florida. We use proven materials and techniques to restore your system to peak performance.

We use industry-standard Duct Blaster diagnostic equipment to precisely measure duct leakage and identify problem areas before and after work is performed.

Signs Your Ductwork Needs Attention

Duct problems are often invisible but their symptoms are hard to miss. Watch for these warning signs.

Uneven Room Temperatures

Some rooms too hot while others are comfortable? Poor duct balance or leaks are likely to blame.

Excessive Dust

Leaky ducts draw unfiltered air from your attic into your living space, dramatically increasing dust and allergen levels.

High Energy Bills

Conditioned air escaping through duct leaks means your AC must run longer and harder — directly increasing your electricity costs.

Noisy Vents

Whistling, rattling, or banging from supply or return vents can indicate loose connections, kinks, or collapsed sections.

Visible Damage or Disconnected Sections

If you can access your attic, look for flex ducts that are kinked, crushed, or completely disconnected from grilles or air handlers.

Musty Odors from Vents

Duct leaks that pull air from unconditioned spaces can introduce mold, mildew, and insulation particles into your breathing air.

Our Ductwork Services

Duct Inspection & Testing

We perform a thorough visual inspection and can conduct duct leakage testing to quantify air loss and pinpoint problem areas.

Duct Sealing

We seal leaks at joints, connections, and penetrations using mastic sealant and foil tape — the correct materials for lasting results (not standard duct tape).

Duct Repair

Sections that are crushed, torn, or disconnected are repaired or replaced. We straighten kinked flex duct to restore proper airflow.

Full Duct Replacement

When a system is too old or damaged to repair effectively, we design and install a new duct system optimized for your home's layout and your AC unit's capacity.

Ductwork FAQs

How do I know if my ductwork needs repair?

Common signs include: uneven temperatures between rooms, higher-than-normal energy bills, excessive dust throughout the home, hissing or whistling sounds near vents, or visible damage to duct runs in your attic or crawlspace.

Can leaky ducts increase my energy bills?

Yes — significantly. The U.S. Department of Energy estimates that leaky ducts can waste 20–30% of conditioned air before it reaches your living spaces. Sealing ducts is one of the most cost-effective energy upgrades you can make.

How long does duct repair or sealing take?

Duct sealing for a typical residential home takes 2–4 hours. Full duct replacement depends on the size of your home and complexity of the duct system, and may take 1–2 days.

How long does ductwork last?

Well-installed ductwork can last 20–25 years. However, flexible ducts in attics degrade faster in Florida's extreme heat and humidity. Regular inspections help identify problems before they become costly.

Should I repair or replace my ductwork?

If your ducts have localized damage or small leaks, sealing and repair is usually sufficient. If the system is old, poorly designed, or extensively damaged, full replacement may be more cost-effective long-term. We'll assess your system and give you an honest recommendation.