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615 Insulation, insulation company in Nashville TN 615-431-3789

Air Sealing, Comfort & Efficiency

Blower door testing that measures how leaky your house really is, before and after the work

A calibrated fan in the front door pulls the house under pressure so leaks can be measured and found.

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Blower Door Testing

You cannot see air leaks, but you can measure them. A blower door is a frame with a fan that fits in an exterior door, lowers the pressure in the house and shows how much air gets in through gaps. With the fan running, leaks can also be found by hand or with smoke.

We use blower door tests on homes across Nashville and Middle Tennessee to set a starting number, to guide air sealing and to confirm the result after the work. New homes are often tested for code, and older homes learn where their biggest leaks are.

What you get

Done right, from the first walk-through

01

Before-and-after numbers

Proof the sealing worked.

02

Leak hunting

Find drafts with the fan running.

03

Code and program testing

For new homes that need a result.

04

Written results

A clear report you can keep.

The process

How your service comes together

  1. 1

    Set up the fan

    A frame and fan are fitted to an exterior door.

  2. 2

    Measure and find leaks

    We read the number and trace leaks.

  3. 3

    Test again

    After sealing, we repeat the test and share the result.

FAQ

Common questions about blower door testing

How long does a blower door test take?

A basic test takes under an hour. A test with leak finding takes longer.

Is the test safe?

Yes. We close the fireplace damper and check the combustion appliances before we start.

Is a test required?

Some programs and new construction codes ask for one. We can tell you if yours does.

Related services

Often planned together

Home Energy Audit Home Energy AuditA walk-through that finds the leaks and puts fixes in order.Learn more Whole-Home Air Sealing Whole-Home Air SealingLeaks closed from the attic to the crawl space.Learn more Attic Air Sealing Attic Air SealingHidden gaps sealed before insulation goes down.Learn more

Service areas

Nashville and the cities all around it

From Clarksville to Shelbyville and Dickson to Cookeville, pick your city to see the insulation, spray foam and air sealing work we handle in your part of Middle Tennessee.

Nashville Antioch Arrington Bellevue Brentwood Clarksville College Grove Columbia Cookeville Dickson Fairview Franklin Gallatin Goodlettsville Hendersonville Hermitage La Vergne Lebanon Madison Mt. Juliet Murfreesboro Nolensville Shelbyville Smyrna Spring Hill Springfield Thompson's Station White House

Not on the list? Call 615-431-3789. We take projects across Middle Tennessee.

Let us help with your blower door testing

Call, text or send the form. Tell us about the building, what bothers you and when you hope to start, and we will take it from there.

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