260 Edgeley Blvd – Unit 13B Vaughan, ON L4K 3Y4

Airtightness Test & Diagnostic Test

Breathe Easy, The Art of Blower Door Testing

An Airtightness Test, also known as a Blower Door Test or Diagnostic Test, is a procedure used to measure the air leakage of a building. This test involves using a specialized fan to depressurize or pressurize the building, allowing for the detection of air leaks. By measuring the airflow required to maintain a certain pressure difference, the test can determine the overall airtightness of the building envelope. This information is crucial for assessing energy efficiency, identifying areas of air leakage, and improving indoor air quality.

the Airtightness Test is a valuable diagnostic tool for assessing and improving the performance of a building’s envelope.

Play Video about Energy Audit Blower Door Test

The Blower Door Test or Diagnostic Test typically includes the following components:

  • Setting up a specialized fan in an exterior door or window of the building to create a pressure difference.
  •  Sealing off all other openings in the building, such as windows, doors, and vents, to isolate the airflow through the fan.
  •  Running the fan to either pressurize or depressurize the building to a standardized pressure level.
  • Measuring the airflow required to maintain the desired pressure difference using a manometer.
  • Calculating the air leakage rate of the building, often expressed in air changes per hour (ACH) or cubic feet per minute (CFM).
  • Conducting a visual inspection or using thermal imaging to identify specific areas of air leakage.
  •  Providing a detailed report of the test results, including recommendations for improving the building’s airtightness and energy efficiency.

To schedule an Energy Audit and a blower door test, call or contact us for a Free Estimate. Our licensed technicians are highly trained to perform air sealing tests and seal your home’s air leaks.


The Benefits of an Airtightness Test

The benefits of an Airtightness Test, also known as a Diagnostic Test or Blower Door Test, include:

  • Improved Energy Efficiency:

By identifying and sealing air leaks, the test helps reduce energy loss and improve the overall energy efficiency of a building. This can lead to lower utility bills and a reduced carbon footprint.

  • Enhanced Comfort:

Airtightness testing can help eliminate drafts, cold spots, and moisture infiltration, creating a more comfortable indoor environment for occupants.

  •  Healthier Indoor Air Quality:

By sealing air leaks, the test can prevent the entry of pollutants, allergens, and outdoor contaminants, leading to better indoor air quality and a healthier living environment.

  • Compliance with Building Codes:

Airtightness testing can help ensure that a building meets required standards for energy efficiency, airtightness, and ventilation, helping owners comply with building codes and regulations.

  • Increased Property Value:

Improving a building’s airtightness and energy efficiency can enhance its market value and appeal to potential buyers or tenants.


Overall, conducting an Airtightness Test can result in cost savings, improved comfort, better indoor air quality, and increased property value for building owners and occupants.

Home Energy Audit Booking

Take the first step towards a greener and more cost-effective future by scheduling a home energy inspection today!

Our professional team of experts is here to help you uncover hidden energy inefficiencies in your home. During the inspection, we will thoroughly assess your property, identifying areas where energy is being wasted and providing you with valuable recommendations for improvement.

Don’t miss out on the opportunity to improve your home’s energy efficiency. Our team is ready to assist you in creating a more energy-efficient and comfortable living space. Take control of your energy usage and start saving today!

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