Blower Door Testing
A blower door is a device which measures the air tightness of buildings. It also measures airflow between building zones, and locates air leakage pathways. A duct blaster, similar to a blower door, tests the air tightness of duct work.
The results show the total air leakage present in the home, allowing for more accurate air sealing, which uses thermal imaging to locate and seal up leaks.
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Recommendations based solely on objective findings. If the issue is minor and can be resolved independently, we will tell you that transparently.
Barry C. Westbrook, SCIH, PE
The founder is a Senior Certified Industrial Hygienist and Professional Engineer, a certified mold consultant credential no Nashville competitor can match. Learn more on our About page.
Founded 2002
Over 20 years of diagnosing and resolving mold remediation jobs across Nashville and Middle Tennessee, TN.
Building-Science Diagnostics
Infrared thermography, blower door testing, duct fan testing, moisture meters, and mold testing services, tools that find root causes, not just surface symptoms.
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All mold remediation work is backed by a warranty. Post-clearance testing included.
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How a Blower Door Test Works
During the audit, the blower door is temporarily installed on the frame of an exterior door, typically the main entrance. Here is what happens next.
Install the Fan
The blower door is temporarily installed onto the frame of an exterior door, typically the main entrance.
Seal the Home
All exterior doors and windows are closed, while all interior doors are left open to connect the zones.
Lower the Pressure
The fan pushes air outside, lowering the air pressure inside your home so the higher pressure outside flows in.
Measure the Leakage
Outside air flows through any cracks, gaps, and penetrations, revealing the total air leakage in the home.
Benefits of a Blower Door Test
Pinpointing and sealing the air leakage in your home pays off in three important ways.
Reduced Energy Usage
Resolving air leakage means your heating and cooling no longer escape through hidden cracks, lowering your energy use and costs.
Improved Home Comfort
Sealing leaks reduces the drafts that make rooms uncomfortable, keeping temperatures steady throughout your home.
Improved Indoor Air Quality
Ensuring the integrity of your air supply means cleaner, healthier air, by controlling exactly where air enters your home.
Air Sealing and Insulation
Once your home is airtight, you will also want to ensure the insulation in your home is not undermining all the hard work you just put into stopping air from infiltrating. Insulation prevents heat from leaving your home in the winter, and slows down the summer heat when it wants to invade your living space.
Air sealing and insulating your home will keep it more comfortable, all year long. Air sealing is rarely done without also upgrading insulation levels, or even insulation types, which in tandem increase the effectiveness of each upgrade individually.
Holds Heat in Winter
Insulation prevents heat from leaving your home when the temperature drops outside.
Slows Summer Heat
It slows down the summer heat when it tries to invade your living space, keeping you cool.
Each Upgrade Reinforces the Other
Done together, sealing and insulation increase the effectiveness of each upgrade individually.
You breathe it in every day. Take control over the air in your home.
Blower Door Testing Questions, Answered
What is a blower door test?
A blower door is a device that measures the air tightness of buildings. It also measures airflow between building zones and locates air leakage pathways. A duct blaster, similar to a blower door, tests the air tightness of duct work.
How does the test work?
The blower door is temporarily installed on an exterior door frame. Exterior doors and windows are closed while interior doors stay open. The fan pushes air outside, lowering the pressure inside so outside air flows in through any cracks, gaps, and penetrations.
What are the benefits of a blower door test?
Resolving air leakage delivers reduced energy usage, improved home comfort by reducing drafts, and improved indoor air quality by ensuring the integrity of your air supply.
Why do air sealing and insulation go together?
Once your home is airtight, insulation keeps that work from being undermined. Air sealing is rarely done without also upgrading insulation, which increases the effectiveness of each upgrade in tandem, keeping your home comfortable all year long.
How do I schedule a blower door test?
Get your own blower door test report and learn how you can reduce energy costs while staying more comfortable. Call DocAir at 615-373-2498 or request an evaluation online to schedule your test today.
Take Control Over the Air in Your Home
You breathe it in each and every day, and it keeps you comfortable, so why not take care of the air in your home? DocAir can help you improve your indoor air quality and keep your home healthy with a blower door test. Reduce energy costs while staying more comfortable in your own home. Serving Middle Tennessee since 2002.
