Air Leakage Test

No Frustration With Our Insulation!

Did you know that up to 40 percent of a home’s energy is wasted due to air infiltration? 

You may be among the 90 percent of U.S. homes that are under-insulated. When it comes to your comfort and safety, your furnace and air conditioner are only half the battle. Too many of today’s homes are leaking air like a flat tire. It doesn’t matter how efficient and tip-top your home comfort system is if you’re trying to heat your home with half the windows open.

Having proper insulation can help you achieve a healthier home with indoor air quality, maintain a comfortable temperature throughout your home, save money on your energy bills, and prevent major issues like ice dams in the winter.

Schedule your free whole-home evaluation today!

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Don't Wait to Insulate.

Get $250 Off Premium Insulation Installation

If you’re experiencing air loss – this is the perfect time to insulate. You can reduce your energy bills with premium insulation and get $250 off.


Our insulation professionals at Service Legends can help you improve your home’s air quality and comfort all year round. Our rigorous diagnostic and repair process start off with:

  1. Evaluation to assess how effectively heat moves around your home, from roof to floor.
  2. We examine your windows and walls for any cracks where air could escape or enter your home.
  3. Conduct an analysis of your attic insulation for its depth and R-value.
  4. All throughout the inspection, we take plenty of notes and pictures regarding your attic’s passive and attic ventilation systems.
  5. Finally, we put together a list of options that could help you save 20% or more on your annual heating and cooling bill.


With financing options, you don’t need to worry! We understand a healthy home with insulation is a big and important investment to your home. With approved credit, we offer flexible payment plans and a variety of financing options to allow you to buy today and pay over time.

Reduce your energy bills with premium insulation and get $250 off!

Offering You a Solution

Blower Door Test

Our blower door test provides a full comprehensive inspection from the top of your attic to the bottom of your basement. Utilizing our newest and top-of-the-line inspection tools, we will calculate the exact amount of air leakage in your home by determining the air change rate in your home.

If you’ve experienced any of the following, you’re a prime candidate for a blower door test:

  1. Hot and cold spots
  2. Unreasonable fluctuating energy bills
  3. Drafty areas
  4. Upstairs that is 10 degrees warmer than downstairs in the summer
  5. Ice dams on your roof
  6. Moisture spots on drywall
  7. Mold-like substances
  8. Frosty windows
  9. Critters, pets, unusual spiders, box elder bugs, asian beetles, stink bugs

The investment for this test is $595 and comes with a comprehensive report of the performance of your home’s construction tightness and insulation. Our Legendary and Superhero Club Members get the blower door test for half price! Learn More

At Service Legends, we understand that no two homes are ever alike. Our experienced and friendly team will work with you to understand your unique needs and determine the perfect solution for you. Whether you choose spray foam insulation, you can rest assured that we will ensure the success of your home project.

Take the First Step & Call Today

Service Legends can help you achieve a healthier home, save you money, and provide better comfort. Give us a call today at 515-657-6634 to schedule an air leakage test for your home.

Insulation Explanation

What Happens During a Blower Door Test?

During a blower door test, a technician will install a calibrated fan on one of your doors or windows to test the indoor environment like to determine your air change rate. When the fan is switched on, it creates a pressure difference between the inside and outside of your home. Usually, the fan sucks air out of the home, creating negative pressure inside the home. That means that the air outside is going to come in, and it will come in through unsealed cracks, windows, and other openings giving us an idea of how many air changes per hour. The higher the number of air changes per hour, the more problems you’re having with air leaking from your home.

How Is Air Leakage Measured?

A technician inside your home can usually pinpoint the exact areas of air leakage. But the best way to measure the air leakage is through the blower itself. A calibrated blower can be adjusted, allowing a skilled professional to measure the exact amount of air leaking into your home.

If that’s confusing, try to think of it as a bucket of water.

You can measure a leaky bucket by pouring water into it. If you pour water faster than the bucket leaks, the bucket will continue to fill. But if you fill the bucket at the same rate as the leakage, the water level won’t rise. If you know the rate at which you’re pouring water into the bucket, you’ve determined the rate that it’s leaking. 

A blower door test does the same thing. The technician can adjust the speed of the blower fan until it achieves equilibrium with the leakage of your house. These measurements are given in units called CFM, or cubic feet of air per minute. This number can then be converted to a standard metric called ACH50, or air changes per hour at the standard pressure of 50 pascals.

In other words, your home’s ACH50 score can be used to compare the air leakage in your home versus others. A 3 ACH50 score would be desirable for newer homes, though older homes may be a bit above this.

What to Expect From a Blower Door Test

If you schedule a blower door test, there are some things you may wish to know beforehand.

Be Prepared to Give the Technician Full Access to Your Home

During the test, your technician will need full access to all areas of your home, including your attic, crawl spaces, and even your closets.

Know Your Leaks Beforehand

You will likely do a walk-through of your home prior to the test. If you are already aware of any leaks, point them out to your technician.

Remove Any Ash From Your Fireplace

Make sure all your fires are completely out, even if you heat them with coal or wood. Before the technician arrives, clean up the ash from your fireplace to avoid having it blow everywhere during the test.

How Long Will the Test Take?

Typically, a blower test will take about an hour, though it may take longer for larger homes, or older homes that may have more air leaks to identify.

What Are the Next Steps?

If your home contains air leaks, one of our professionals can recommend some solutions to ensure your home is properly sealed. This may include chemical sealants, or physical measures such as flashing or weather stripping around windows, doors, and vents. Your technician can provide recommendations that are right for you and your home.

This isn’t a gym membership, but we’ll work out all your problems.