Air Flow Testing and Leak Testing

Find Out Where Your House Is Leaking Air

Every house leaks air. The question is where, how much, and which leaks are actually costing you. A blower door test answers all three with numbers instead of guesses: a calibrated fan depressurizes the house, and we measure exactly how much outside air is finding its way in through gaps you’d never spot by eye. TIES 360 runs the test, reads the results with you, and hands you a plan that separates the leaks worth fixing from the ones that are fine to leave alone.

How a Blower Door Test Works

The blower door itself is a fan mounted in the frame of an exterior door. Running it pulls air out of the house and lowers the pressure inside, so outside air pushes in through every unsealed gap, crack, and opening at once. That lets us measure the home’s total leakage, then walk the house to find the individual culprits, sometimes with a smoke pencil or an infrared camera where insulation is missing. The tool dates to the late 1970s and has been standard in building science ever since. Today it’s also what Florida uses to test new homes for code, so the number you get means something: the fan is calibrated, and the result can be compared before and after repairs.

  • Florida code testing. Since 2017, new Florida homes have to pass a blower door test at seven air changes per hour or lower before they’re signed off. We test to Florida Building Code requirements and provide the documentation builders and inspectors need
  • The whole picture, not just one number. We check the duct system for restrictions and design problems, then run an electronic capture hood over the registers to measure how much conditioned air each room actually receives. A house can test tight and still have one room that gets nothing.
  • A prioritized plan. You leave with a written list ranked by payoff, including the fixes you can handle yourself and clear pricing on the ones you’d want us to do.

How It Works

The same four steps for every job we do, from duct cleaning to attic insulation.

  1. Schedule a free consultation

    Contact us and tell us what's going on. We'll set a time that works for you.

  2. We come out and take a look

    A technician inspects the problem area, takes measurements, and shows you what they find.

  3. Receive your estimate

    The price in writing before any work starts. No pressure either way. You'll receive a hassle-free esimate.

  4. Well handle everything

    Same crew, on schedule. We keep the job contained and leave your home cleaner than we found it.

Ready for step one? Call (941) 870-3302 Or schedule by form

From Numbers to Fixes

The test is the diagnosis. The fix depends on what it finds. Leaky ductwork points to Aeroseal duct sealing, which closes duct leaks from the inside and comes with its own before-and-after measurement. A thin attic reading points to blown-in insulation. Envelope leaks around plumbing, wiring, and attic hatches often just need targeted air sealing. Because we do both the testing and the repairs, we’ll tell you plainly which fixes are worth your money, and the results keep us accountable: seal something, re-test, and the numbers move.

When a Test Pays for Itself

Some situations call for a measurement before anyone spends money on fixes. If your summer bills keep climbing and you can’t tell whether to blame the ducts, the insulation, or the house itself, the test shows which one is the problem and by how much. If you’re about to replace an AC system, tightness numbers help your installer size the new unit correctly instead of oversizing it out of caution. Just finished a renovation? Testing catches the new leaks construction left behind. And if one room is always hot, the capture hood shows whether it’s even receiving its share of air. In every case you’re buying the same thing: proof, before repairs, of what’s actually wrong.

Air Leaks Are Different in Florida

Up north, a leaky house wastes heat. Here, it imports humidity. Every gap in the envelope lets moist outdoor air into a house you’re paying to keep dry, and that moisture load shows up as sticky rooms, musty closets, and an AC that runs all afternoon without the house feeling any better. The test measures that infiltration directly. And if your house turns out to be very tight, that matters too: tight homes sometimes need help with fresh air and moisture control, which is where whole home dehumidification comes in. Either way, you want the number before you decide anything.

Common Questions

How much does a blower door test cost?

It depends on the size of the home and whether you need the envelope test alone or the full assessment with duct inspection and room-by-room airflow readings. We quote it up front when you call, before anything gets scheduled.

Yes. Since 2017 the Florida Building Code has required new homes to be tested and to come in at seven air changes per hour at test pressure or lower. Builders use the results for compliance paperwork, and we provide the documentation the inspector needs.

Setup and the envelope measurement usually run about an hour. The full assessment with duct inspection and capture hood readings generally takes a few hours depending on the house. You can stay home the whole time, and the walkthrough at the end is worth being there for.

No. The fan mounts in an exterior door frame with an expandable panel, nothing gets drilled or cut, and the house is back to normal the minute the fan comes out. We check pilot lights and fireplaces before starting; that’s part of the setup.

Often, yes. Dust and humidity usually ride in on unfiltered air, either through envelope gaps or leaky return ducts. The blower door finds the first kind, the duct inspection finds the second, and the fixes are different, which is exactly why we measure first.

What Our Customers Say

Real Experiences, Genuine Feedback

Discover the impact of our services through the words of those who’ve experienced the T.I.E.S. 360 difference. Their testimonials underscore our dedication to providing cleaner, healthier air for all.