Whole Building Air Testing

What is air leakage testing, and why is it important?

 

Air leakage testing measures the amount of uncontrolled air movement through a building’s envelope. Excessive air leakage can lead to higher energy costs, indoor air quality issues, and reduced occupant comfort. By conducting air leakage testing, building owners can identify problem areas, improve energy efficiency, and ensure compliance with building codes and industry standards.

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What is involved in whole building air testing?

 

Whole building air testing evaluates the airtightness of an entire structure using specialized equipment, such as blower doors and pressure gauges. The process includes:

• Sealing Openings – All intentional openings, such as vents and ducts, are temporarily sealed.

• Pressurization & Depressurization – Large fans create a pressure difference between the interior and exterior.

• Measuring Airflow – Sensors record the amount of air leakage and identify problem areas.

• Leak Detection – Additional methods like infrared thermography or smoke testing pinpoint specific leaks.

This comprehensive testing process helps identify air infiltration and exfiltration points, allowing for targeted repairs.

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How does whole building air pressurization testing work?

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Whole building air pressurization testing involves using mechanical fans to create a controlled pressure difference between the inside and outside of a building. This forced pressure change allows us to:

• Measure air leakage rates at different pressure levels

• Detect gaps, cracks, or defects in the building envelope

• Verify the effectiveness of installed air barriers

• Ensure compliance with energy codes and airtightness requirements

This method provides an accurate assessment of how well a building retains conditioned air and prevents outside air infiltration.

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What are the benefits of whole building air tightness testing?

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Whole building air tightness testing offers several advantages:

• Energy Savings – Reduces heating and cooling costs by preventing conditioned air loss.

• Improved Indoor Air Quality – Limits the infiltration of pollutants, allergens, and outdoor contaminants.

• Moisture Control – Helps prevent condensation buildup and mold growth.

• Enhanced Comfort – Eliminates drafts, temperature inconsistencies, and humidity fluctuations.

• Regulatory Compliance – Meets requirements for energy efficiency codes and green building certifications.

• HVAC Longevity – Reduces strain on heating and cooling systems, extending their lifespan.

By identifying and sealing air leaks, businesses and property owners can create a healthier, more efficient indoor environment.

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Is air leakage testing required by building codes?

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Yes, air leakage testing is increasingly required by energy codes and industry standards. Key regulations include:

• 2021 International Energy Conservation Code (IECC) – Requires air tightness testing for most commercial buildings over 5,000 square feet.

• ASHRAE 90.1 2019 – Mandates air barrier testing or detailed quality control inspections for all commercial buildings.

• Local and State Codes – Many states and municipalities require air leakage testing as part of energy efficiency initiatives.

Meeting these requirements ensures compliance and enhances building performance.

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How does air leakage impact energy efficiency?

 

Uncontrolled air leakage forces heating and cooling systems to work harder to maintain indoor temperatures, leading to increased energy consumption and higher utility bills. By performing air leakage testing and addressing problem areas, building owners can significantly reduce energy waste, improve HVAC efficiency, and extend the lifespan of mechanical systems.

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What methods are used to detect air leakage?

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Our team uses a combination of whole building air pressurization testing, infrared thermography, and smoke or fog testing to locate and measure air leaks. Infrared imaging helps identify temperature differences that indicate leaks, while smoke testing visually reveals airflow patterns. These advanced techniques ensure precise detection and effective remediation strategies.

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How often should air leakage testing be performed?​

 

We recommend conducting air leakage testing:

• During New Construction – Ensures compliance with energy codes before occupancy.

• After Major Renovations – Identifies changes in building airtightness after structural modifications.

• Regularly for Existing Buildings – Helps maintain efficiency and detect new leaks.

• Following HVAC Upgrades – Verifies that new mechanical systems are operating efficiently in a sealed environment.

Routine testing helps maintain long-term energy savings and indoor comfort.

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What types of buildings benefit from whole building air barrier testing?

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Whole building air barrier testing is beneficial for a wide range of structures, including:

• Commercial Office Buildings – Reduces energy costs and enhances occupant comfort.

• Industrial Facilities – Ensures compliance with energy efficiency regulations.

• Healthcare Institutions – Improves air quality for patients and staff.

• Educational Campuses – Creates a healthier indoor environment for students and teachers.

• Multifamily Housing Complexes – Reduces energy waste and improves tenant satisfaction.

Any building seeking to improve efficiency, indoor air quality, and regulatory compliance can benefit from a comprehensive air leakage assessment.

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How can I schedule an air leakage test for my building?

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To schedule an air leakage test, contact our team via phone or our website. We will assess your building’s needs, recommend the appropriate testing methods, and provide a detailed evaluation of air leakage levels. Our expertise ensures compliance with industry standards and helps you achieve a more energy-efficient, high-performing building.