What a Duct Blaster Test Tells You

Your ductwork carries cooled air from your AC to every room. When it leaks, some of that air ends up in the attic or the walls instead. A duct blaster test measures exactly how much your ducts are leaking, so repairs are based on numbers, not guesses.

  • How much of your cooled air is being lost
  • Whether hot, humid attic air is being pulled into the system
  • Whether leaky ducts are adding to humidity, dust or musty smells
  • Whether duct repairs actually worked

Why Leaky Ducts Cost More Than You Think

Most Florida ductwork runs through a hot attic. When supply ducts leak, you lose cooled air you already paid for. When return ducts leak, they pull in attic air that’s hot, humid and dusty, and your AC has to cool and dry it all over again.

That extra moisture can raise your indoor humidity and create the conditions mold needs, inside your ducts and your AC system.

Damaged AC ductwork found during a home inspection in Florida

Sealing Leaks Isn’t the Same as Fixing Your Ducts

Sealing leaky ducts helps, and utility rebates can help pay for it. But leaks are only one duct problem.

Ductwork that’s the wrong size or laid out poorly for your rooms can still leave you with hot rooms, humidity and high bills, even after it’s sealed. That’s why we look at how your ducts were designed, not just whether they leak. When a room still won’t cool after sealing, we test the airflow reaching that room to find out why.

A room that never cools isn’t “just an old house.” It’s usually the ductwork, and it can be fixed.

Warning Signs

Signs Your Ducts May Be Leaking

Rooms That Won’t Cool

Cooled air that leaks out never reaches the room it was meant for.

High Electric Bills

Your AC runs longer to make up for the air your ducts lose.

Dust That Comes Right Back

Leaky returns can pull dust and insulation fibers in from the attic.

Musty Smell When the AC Runs

Humid attic air getting into the system can bring moisture and odors with it.

A Humid, Sticky House

Leaks that pull in outside air can keep your humidity high.

Old or Damaged Ductwork

Crushed, torn or disconnected ducts are more common than most people think.

How It Works

How Our Duct Blaster Test Works

Measure it, find it, fix it, then prove it.

STEP 1

We Measure the Leakage

We test your duct system and measure how much air it’s losing.

STEP 2

We Find the Leaks

We track down where the air is escaping and look at how your ducts were laid out.

STEP 3

We Fix Them the Right Way

Sealing, repair or redesign where it’s needed, explained in plain language with the price before we start.

STEP 4

We Test Again

After the work is done, we test again so you can see the difference in writing.

Duke Energy offers rebates for duct testing and repair, and we’re an approved Duke Energy contractor. We’ll tell you what you qualify for.

Energy Skilled badge, recognized by the U.S. Department of Energy, shown on the FL HVAC Services Google listing
Recognized by the U.S. Department of Energy

The Badge We Can’t Buy

Look up FL HVAC Services on Google and you’ll see a line most AC companies don’t have: “Home energy auditing recognized by the US Dept. of Energy.” Tap it and the Energy Skilled badge pops up, with a link to Energy.gov.

Nobody can add that to a business listing themselves. Not us, and not a marketing company. The U.S. Department of Energy verifies the credential and reports it to Google, and Google puts it on the listing.

What it means for your home: we look at your house and your AC as one system. How outside air leaks in, how humidity builds up, how air moves from room to room, and why some homes end up with stale, stuffy air that makes people feel worse inside than out. Then we design and fix your system for what your home actually needs.

✓ Verified by the U.S. Department of Energy
✓ Shown on our Google listing by Google itself
✓ Trained in humidity, air leaks, airflow and indoor air quality

Duct Blaster Test Questions We Hear Most

What is a duct blaster test?

It’s a test that measures how much air leaks out of your ductwork. We pressurize your duct system with a calibrated fan and measure how much air escapes, so any repairs are based on real numbers.

What’s the difference between a duct blaster test and a blower door test?

A blower door test measures air leaks in your whole home. A duct blaster test measures leaks in your ductwork only. Together, they show where your cooled air, and your money, are going.

Can leaky ducts cause mold?

They can play a role. Leaky return ducts can pull in humid attic air, which adds moisture to your AC system and your home. Mold in an AC system is a sign something in the design or installation isn’t right, and it should be checked.

Will sealing my ducts lower my electric bill?

It can help. But if your ducts are the wrong size or your AC isn’t right for your home, sealing alone won’t fix it. We’ll tell you honestly what will.

See how we handle ductwork repair and redesign. Or see why one room stays hotter than the rest.

Are there rebates for duct testing and repair?

Yes. Duke Energy offers rebates for duct testing and repair, and OUC and other Florida utilities offer duct rebates too. We’re an approved Duke Energy contractor, and we’ll tell you what you qualify for.

How much does a duct blaster test cost?

It depends on your home and whether it’s part of a complete energy audit. You’ll know the price before we start.

What areas do you serve?

Ocala, The Villages and the surrounding areas, including Marion, Sumter, Lake, Citrus and Orange Counties and the Orlando area.

Service Area

Areas We Serve in Central Florida

FL HVAC Services serves homeowners across Central Florida, including:

Ocala
Belleview
Summerfield
The Villages
Dunnellon
Silver Springs
Silver Springs Shores
Marion Oaks
Ocklawaha
Fairfield
On Top of the World
Lady Lake
Fruitland Park
Leesburg
Wildwood
Inverness
Tavares
Mount Dora
Clermont
Orlando

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