A blower door system consists of:

• A powerful fan mounted in an exterior doorway.
• A pressure gauge that measures airflow changes.
• Specialized sensors that detect where air is leaking.

When the fan runs, it depressurizes the house, making it easy to locate air leaks. These leaks are a major cause of humidity problems, especially in Florida’s humid climate.

What a Blower Door Test Reveals About Humidity Control

1. Unwanted Moist Air is Sneaking Into Your Home

If your home has leaks around windows, doors, walls, attic access points, or ductwork, humid air from outside seeps in. This forces your AC to work harder and increases indoor humidity levels.

Solution: Sealing leaks reduces moisture infiltration, making it easier for your HVAC system to maintain a comfortable humidity level.

2. Your AC Might Be Working Against You

Even if you have a high-quality AC unit, air leaks can undermine its effectiveness.

• If warm, humid air leaks into your home, your AC cools the air but struggles to remove moisture fast enough.
• Your AC runs longer, wasting energy but still leaving the home feeling muggy and uncomfortable.

Solution: By sealing leaks found in a blower door test, your AC will remove moisture more efficiently and keep humidity levels lower.

3. Duct Leaks Might Be Making Humidity Worse

A blower door test is often paired with a duct blaster test, which identifies air leaks in your duct system.‍

• Leaky ducts can pull humid air from attics or crawl spaces into your HVAC system, increasing indoor humidity.
• Conditioned air can also escape through leaks, making your AC cycle more frequently and inefficiently.

Solution: Sealing duct leaks improves air distribution, prevents excess humidity from infiltrating the home, and allows your AC to function properly.

Why Florida Homes Need a Blower Door Test for Proper Humidity Control

• Florida’s hot and humid climate means air leaks bring in more moisture than in drier states like Arizona or Colorado.
• High humidity makes your home feel warmer, forcing you to lower the thermostat unnecessarily.
• Unsealed homes waste energy as your AC struggles to keep up, leading to higher utility bills.
• Without a blower door test, your AC is only treating the symptom—not the source—of humidity problems.

The Benefits of a Blower Door Test for Florida Homeowners

1. Lower Humidity, Higher Comfort – A properly sealed home keeps humidity out, making your home feel cooler and drier.
2. Lower Energy Bills – When your AC doesn’t have to work overtime fighting humidity, you save on energy costs.
3. Better Indoor Air Quality – Reducing air leaks prevents allergens, dust, and mold from entering your home.
4. Longer HVAC Lifespan – A properly sealed home reduces strain on your AC, extending its life.

Take Control of Your Home’s Comfort Today!

• Schedule a Blower Door Test Today! Find out where your home is leaking air and how you can dramatically improve humidity control.