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The Hidden Cost of Poor Airflow in High-Performance Commercial Buildings

Poor airflow in commercial buildings leads to higher energy bills, reduced indoor air quality, and HVAC wear. Learn how to identify and solv

Ava Montini

Mar 24, 2025

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Why airflow inefficiencies drive up costs, compromise indoor air quality, and create hidden challenges for facility managers


Most commercial and institutional buildings today are designed with performance and efficiency in mind. Energy benchmarks, ESG goals, and occupant well-being are often front and center. But despite those efforts, one critical element of building performance is consistently underdiagnosed: airflow.


Poor airflow can silently affect every corner of your building’s operations — from higher energy consumption and HVAC maintenance costs to reduced indoor air quality (IAQ) and missed sustainability opportunities. It rarely shows up as a red flag on day one, but over time, it chips away at performance in ways that are both measurable and avoidable.


Inefficient Airflow Increases Energy Use — Even in “Efficient” Buildings

In many commercial buildings, HVAC systems account for roughly 30–40% of total energy consumption, according to Natural Resources Canada and ASHRAE. But when airflow is restricted, that percentage can climb significantly.


The most common culprits are high-resistance filters, dirty or aging ductwork, unbalanced systems, or outdated fans. These conditions increase static pressure, which forces HVAC fans to work harder and longer to achieve required airflow levels.


According to a study by the U.S. National Institute of Standards and Technology (NIST), buildings with airflow-related HVAC issues can see energy use increase by up to 30% compared to optimized systems. [1]


Even minor issues can have an outsized impact. A 100,000 sq. ft. office building experiencing elevated fan energy use due to clogged filters or inefficient duct design could face annual utility costs tens of thousands of dollars higher than necessary. For building owners managing multiple sites, that inefficiency compounds quickly.


Airflow and Indoor Air Quality Are Closely Linked


Buildings are dynamic systems, and air quality tends to suffer when airflow is compromised. Insufficient airflow can lead to poor ventilation, uneven air distribution, and pockets of stagnation in rooms or zones. These areas often experience elevated levels of carbon dioxide (CO₂), volatile organic compounds (VOCs), and particulate matter — especially in high-occupancy spaces.


A 2015 study from Harvard’s T.H. Chan School of Public Health found that employees working in well-ventilated buildings performed 61% better on cognitive tasks than those in typical buildings with poor ventilation and air quality. [2]


In schools, researchers have found that students in classrooms with improved ventilation perform better on standardized tests. [3] In healthcare facilities, inadequate air movement can increase the risk of airborne illness transmission.


Common complaints like “stuffy rooms,” temperature inconsistencies, or fatigue can often be traced back to airflow and ventilation issues — even when temperature setpoints and filtration standards are technically being met.


Poor Airflow Wears Down HVAC Systems Faster


Inefficient airflow costs more on your energy bill and accelerates mechanical wear and tear. When fan motors, compressors, and dampers are forced to operate under continuous load, components degrade faster than expected.


This leads to:

  • More frequent repairs and service calls

  • Shortened equipment lifespan

  • Greater downtime and occupant discomfort during peak seasons


A study from the National Air Duct Cleaners Association (NADCA) notes that air distribution restrictions are a key factor in premature HVAC failure and reduced system capacity. [4]


The cost of replacing a rooftop unit, for example, can range from $10,000 to $25,000, depending on building size and complexity — not including indirect costs from temporary system downtime.


Sustainability Targets Can Be Quietly Undermined


Many facilities today are pursuing ESG goals, LEED certification, or local emissions reduction mandates. But airflow inefficiencies can quietly work against those targets by increasing Scope 2 emissions (energy-related emissions) and filter waste.


High-resistance air filters, mainly traditional pleated filters, can contribute to this in two ways:

  1. Increased energy use due to pressure drop

  2. Frequent changeouts, leading to more waste and landfill contribution


According to a 2021 study in Building and Environment, filter pressure drop is one of the most overlooked contributors to unnecessary HVAC energy use — especially when filters are overused or under-maintained. [5]


If a building claims progress in sustainability, it’s important to ensure that filtration and airflow practices align with those claims—both from an energy and waste standpoint.


Missed Opportunities for Incentives and Cost Recovery


One of the lesser-known downsides of inefficient airflow is the lost opportunity to qualify for energy retrofit incentives.


Many utility and government programs across North America offer rebates, grants, or low-interest financing for businesses upgrading HVAC systems, controls, and low-pressure filtration. But to be eligible, buildings often need to demonstrate quantifiable improvements in system performance.


For example, Ontario’s Save on Energy Retrofit Program offers up to 50% of project costs for energy-efficiency upgrades, including those related to ventilation, air handling units, and demand control ventilation systems. [6]


Without data on airflow improvement or energy reduction — or without addressing underlying airflow inefficiencies — buildings may fail to qualify, leaving funding on the table.


Practical Steps to Address Airflow Challenges


The good news is that improving airflow doesn’t require a major capital project. Many impactful changes can be made within existing operations and maintenance cycles.


Here’s where most facilities can start:

  • Conduct a static pressure and airflow assessment to identify bottlenecks

  • Replace high-pressure filters with low-pressure, high-efficiency alternatives

  • Balance and tune your HVAC system, especially if zones have changed due to new usage patterns

  • Install real-time IAQ monitors to detect issues as they emerge, not after complaints arise

  • Track filter changeouts and energy use to capture data for future incentive applications


These strategies are already being implemented in facilities across North America — and in most cases, they deliver measurable improvements in energy efficiency, equipment reliability, and occupant satisfaction.



Airflow may not be the most visible part of your building, but it’s one of the most influential. When ignored, it quietly drives up energy costs, reduces system lifespan, and compromises air quality.


For facility managers and business owners focused on performance, sustainability, and operational clarity, airflow should be on the radar — not just as a maintenance metric but as a lever for long-term efficiency and resilience.


Addressing airflow challenges is a straightforward, high-ROI step that supports healthier, more cost-effective, and future-ready buildings.

The Business Case for Investing in Indoor Air Quality Management: Sustainability and ROI

  • Writer: Jennifer Crowley
    Jennifer Crowley
  • Apr 24, 2024
  • 6 min read

Updated: Jul 8, 2024

Male entrepreneur and his colleague developing new strategy and talking about new sustainability ideas in front of whiteboard.
Investing in Indoor Air Quality (IAQ) systems, with a sustainability-focused manufacturer, is a strategic approach to reducing a business's carbon footprint.

In today's corporate landscape, the emphasis on health, sustainability, and efficient management has never been greater. One critical area that is rapidly gaining attention is indoor air quality (IAQ). Companies like Blade Air are at the forefront of providing advanced IAQ solutions that not only enhance health and well-being but also offer compelling sustainability benefits and return on investment (ROI). This blog explores the business case for investing in indoor air quality management, focusing on sustainability and ROI.


Understanding Indoor Air Quality

Indoor air quality is a critical concern as poor IAQ is linked to a variety of health issues and decreased productivity. According to the Environmental Protection Agency (EPA), Americans, on average, spend approximately 90% of their time indoors, where the concentrations of some pollutants are often 2 to 5 times higher than typical outdoor concentrations. Health Canada similarly highlights that Canadians spend close to 90% of their time inside; thus, indoor air quality is crucial for public health.


Sustainability Benefits

Reducing Carbon Footprint

Buildings are significant contributors to carbon emissions, with the EPA noting that commercial and residential buildings account for about 40% of total U.S. energy consumption. In Canada, the building sector accounts for 17% of secondary energy use and 12% of national greenhouse gas emissions. Furthermore, according to the Canada Green Building Council (CAGBC), buildings generate nearly 30% of all greenhouse gases, and 35% of landfill waste, while consuming up to 70% of municipal water.


Investing in Indoor Air Quality (IAQ) systems, with a sustainability-focused manufacturer, is a strategic approach to reducing a business's carbon footprint. This can be achieved through several mechanisms that enhance energy efficiency and promote sustainability. Here’s a detailed look at how improved IAQ contributes to these goals:

1. Energy Efficient HVAC Systems

Modern IAQ-focused systems often integrate with or enhance the efficiency of heating, ventilation, and air conditioning (HVAC) systems. These advanced IAQ systems use energy-efficient technologies such as variable speed drives and smart thermostats that adjust the heating and cooling based on real-time indoor air quality data. This means the systems work only as hard as necessary to maintain optimal air quality, avoiding overuse of energy.


2. Improved Air Filtration and Circulation

High-efficiency particulate air (HEPA) filters and other advanced filtration technologies can improve the cleanliness and circulation of indoor air. Cleaner air reduces the load on HVAC systems, as less dust and fewer allergens mean the systems need less energy to push air through filters. Furthermore, improving the air distribution system's design to maximize circulation reduces the energy needed to achieve effective air exchange and maintain comfortable indoor temperatures.


3. Smart Building Management Systems

Integrating IAQ management with smart building systems can lead to significant energy savings. These smart systems can monitor various parameters, including carbon dioxide levels, humidity, and particulate matter, to optimize building ventilation and air conditioning systems dynamically. By using real-time data to adjust indoor environments, these systems reduce unnecessary HVAC operation, thus lowering energy consumption.


4. Reduced Need for Heating and Cooling

Good IAQ contributes to maintaining stable indoor temperatures. By optimizing airflow and removing pollutants that can impact perceived air quality and comfort, there is often less need to adjust the temperature. For example, removing excess humidity can make indoor environments feel cooler in summer without lowering the thermostat, thereby saving on air conditioning costs.


5. Demand-Controlled Ventilation

Demand-controlled ventilation (DCV) systems adjust the air volume being delivered based on the occupancy levels detected in different parts of the building. This means that energy isn’t wasted ventilating unoccupied or seldom-used spaces. DCV systems are particularly effective in large commercial buildings where occupancy can vary significantly throughout the day and week. Case studies have documented that buildings with properly implemented DCV systems can save up to 40% of their usual ventilation energy costs.


6. Long-Term Building Sustainability

Buildings with high standards of sustainability and energy efficiency may qualify for green building certifications like LEED (Leadership in Energy and Environmental Design), which can further reduce operational costs and increase investment returns.


7. Regulatory Compliance and Incentives

Many regions are now introducing stricter regulations on building emissions and energy efficiency. Investing in IAQ can help businesses comply with these regulations and often makes them eligible for financial incentives or tax breaks provided for energy-efficient upgrades.


By reducing the energy demand for HVAC systems and leveraging smart technologies, businesses not only enhance their sustainability but also contribute to broader environmental goals such as reducing greenhouse gas emissions. In this way, investing in IAQ is not just a measure to improve indoor environmental quality but also a significant step towards achieving energy efficiency and sustainability in the corporate world.


Enhancing Building Efficiency

Energy-efficient IAQ systems improve thermal comfort and reduce the energy needed for heating and cooling. This not only cuts down on energy consumption but also contributes to sustainability goals. The Canadian government’s incentives for energy efficiency in buildings and the U.S. Department of Energy's guidelines on building energy standards underscore the importance of energy-efficient systems.

1. Energy Consumption:

High-quality IAQ systems can reduce energy use for heating and cooling by 10% to 30%, depending on the specific technology and the climate in which the building is located.


2. Energy Savings:

According to the U.S. EPA, HVAC systems can account for approximately 30-40% of the energy used in commercial buildings. By using energy-efficient IAQ systems, buildings can see a reduction in this energy consumption.


3. Thermal Comfort:

Improved IAQ can lead to a 10-70% increase in perceived thermal comfort, according to research studies. This can reduce the need for personal heaters or cooling fans, further saving energy.


4. Economic Incentives:

Energy-efficient investments, including IAQ improvements, can qualify for various incentives. For example, in British Columbia, Canada, the government offers the Business Energy Savings Incentives program, which can cover up to 25% of costs businesses incur while implementing energy-efficient equipment upgrades (lighting, HVAC, Refrigeration (including Energy Star®).


5. Cost Reduction:

Implementing IAQ improvements has shown an average of 20% savings on energy costs in buildings that upgrade from standard systems to high-efficiency systems.


6. Regulatory Compliance:

Buildings with better IAQ systems may also have an easier time complying with regulations like the Canadian National Energy Code for Buildings and the U.S. ASHRAE standards, potentially avoiding fines and other penalties.


Promoting Healthier Workplaces

The social aspect of sustainability—employee health and well-being—is a major benefit of good IAQ. A study published by the American Journal of Public Health found that improved indoor environmental quality doubled the respondents' effectiveness on cognitive tasks. Similarly, Canadian research indicates that better indoor air quality could reduce common symptoms of sick building syndrome, enhancing worker productivity and well-being.


Return on Investment (ROI)

Investing in the quality of the air within our spaces isn't just an investment in health—it's a strategic financial decision with tangible benefits. As we delve into the multifaceted ROI of IAQ improvements, we'll uncover how this unseen asset is yielding visible rewards, shaping the future of sustainable business practices and financial success:

1. Increased Productivity

Research by Harvard T.H. Chan School of Public Health reveals that cognitive function scores were significantly better in green building conditions compared to conventional building conditions. Applying these findings, companies in both Canada and the U.S. can see a direct correlation between enhanced IAQ and increased employee productivity.


2. Lower Health Costs

Improving IAQ can lead to lower health-related costs. Statistics from Health Canada show that Canadians spend over C$120 billion annually on health care, with a significant portion potentially related to poor indoor environments. In the U.S., the EPA reports similar findings, suggesting that improved IAQ could reduce national healthcare costs.


3. Higher Property Value

Enhanced IAQ features are increasingly recognized in property valuations. In both Canada and the U.S., buildings with sustainable features and better IAQ command higher prices and rents. For instance, ENERGY STAR-certified buildings in the U.S. report almost 10% higher rental rates than comparable properties.


4. Risk Management

In the context of increasing regulatory focus on building emissions and environmental impact, companies face significant risks. In both the U.S. and Canada, regulations around building emissions are tightening, and investing in good IAQ systems helps mitigate potential legal and compliance risks.


Conclusion

The case for investing in indoor air quality management is robust, supported by statistics from Canada and the U.S. Companies that invest in advanced IAQ solutions from providers like Blade Air not only improve their operational efficiency and employee well-being but also enhance their sustainability and ROI. This approach aligns with broader environmental goals and health standards, marking a forward-thinking step for businesses in North America. By focusing on sustainable investments in indoor air quality, businesses are not merely complying with today's standards but are also preparing for a more sustainable and profitable future.


Explore expert insights, stay up to date with industry events, and gain a deeper understanding of the cutting-edge developments that are revolutionizing the indoor air quality landscape within Blade Air's comprehensive Insights Hub.

You can also subscribe to our monthly newsletter below for exclusive early access to Blade's Insights content, uncovering tomorrow's air quality advancements before they hit our Hub.

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