Wildfire Season Has Become a Business Risk Every Facility and CRE Leader Should Plan For in 2026

Wildfire season strains buildings and people. See how facilities can prepare in 2026 to reduce costs, protect tenants, and build resilience.

Ava Montini

Mar 11, 2026

Written by

Published on

The Business Side of Smoke Days

When wildfire smoke drifts into a region, the strain on buildings is both immediate and multi-layered. Filters load faster, pushing fans to use more power just to keep airflow steady (EPA). As systems deviate, alarms trigger more frequently, and maintenance teams are pulled from planned tasks into reactive changeouts (Facility Executive). Meanwhile, vendors across the region see surging demand; parts and pads that usually arrive in days might take a week or more (NC State). That delay alone can unravel even the most rigorously planned preventive maintenance schedules.

Inside the building, occupants feel a different side of the same event. They note scratchy throats, irritated eyes, or rooms that feel stale or “heavier” when fresh air intake is reduced (AirNow). They see Air Quality Index alerts on their phones and news headlines escalating (EPA AQI). In those moments, the question is no longer just whether systems are responding, it’s: Is the building protecting me? When communication is missing or unclear, perception can trump technical measures, tipping the balance from confidence to complaints (BOMA).

Why It Matters More in 2026

The stakes are rising. Multiple studies show that during wildfire events, indoor air can reach one-third to three-quarters of outdoor particulate concentrations in buildings lacking robust mitigation (PMC). Residential buildings in fire-affected areas have shown infiltration ratios reflective of this risk (PMC). In some wildfire-impacted care environments, indoor concentrations have peaked near 200 µg/m³ (NCBI). In contrast, well-configured filtration systems often reduce that exposure to roughly 43% of outdoor levels, showing how effectively mitigation can work (NCCEH).

The human health impacts are significant. Fine particulate matter (PM₂.₅) is linked to asthma flare-ups, reduced lung function, and cardiovascular stress (EPA). Sensitive populations (children, older adults, and those with pre-existing conditions) are most at risk (CDC). However, research also shows that even healthy adults are not immune to short-term exposure (PubMed). Harvard-led studies estimate that wildfire smoke has caused over 15,000 premature deaths in the U.S. in recent decades, with an associated economic burden of $160 billion (Harvard). For employers and property leaders, this translates into absenteeism, healthcare costs, and measurable productivity loss (National Bureau of Economic Research).

At the same time, smoke is a mechanical stressor. It accelerates filter clogging, pushes fans outside their normal operating range, and drives up energy consumption (ScienceDirect). Facility executives consistently report higher unplanned maintenance costs during wildfire season, along with shortened asset life for critical HVAC equipment (Facility Executive). Viewed at scale, these costs ripple upward into operational budgets and capital planning, making smoke days not just a maintenance issue but a financial liability.

What Smoke Events Do to Commercial HVAC Systems

Wildfire smoke can be seen as just “dirty air", but to get deeper, it is a dense mix of ultrafine particles, ash, organic compounds, and combustion byproducts that behave differently from typical urban pollution.

When these particles enter HVAC systems, three operational challenges occur simultaneously:

Rapid filter loading and front loading: Fine smoke particles quickly accumulate on the front face of filter media rather than distributing evenly through the depth of the filter. This “front loading” effect increases resistance to airflow much faster than normal particulate loading.
Fan energy increases: As pressure across the filter bank rises, fans must work harder to maintain airflow.
Airflow imbalance: Systems designed for stable pressure conditions may struggle to maintain balanced ventilation across zones.

During heavy smoke events, these mechanical effects can compound quickly. What begins as a minor filtration issue can cascade into comfort complaints, airflow deviations, and unexpected service calls.

Rethinking Preparedness

Preparedness today requires more than having spare filters in storage. Facilities that treat smoke season as part of their risk portfolio are proving more resilient. Research shows that buildings operating with lower baseline pressure drops have more headroom when smoke events occur, allowing systems to maintain airflow without tipping into alarm states (ScienceDirect). Forward-looking teams also map their most critical zones (like labs, classrooms, care units, or executive suites) and prioritize them during smoke events, an approach recommended in EPA guidance for schools and commercial buildings (EPA).

Another resilience factor is vendor readiness. Case studies after the 2020 smoke season showed that supply chain bottlenecks caused delays of days to weeks in replacing filters and components, leaving unprepared facilities exposed (NC State). Facilities that negotiated priority contracts in advance were able to maintain schedules even during regional demand surges. Similarly, using AQI forecasts and on-site PM₂.₅ sensors has been shown to improve response times; by acting early, facilities reduce exposure and minimize tenant complaints (PMC).

Wildfire readiness also intersects with broader sustainability and ESG commitments. Poor indoor air quality during smoke events undermines health-related certifications like WELL and LEED, while higher fan energy use increases a building’s carbon footprint (USGBC; IWBI). Integrating smoke resilience into ESG strategies provides measurable benefits for investors and stakeholders while demonstrating a proactive approach to tenant wellness.

Three Questions Facility Leaders Should Ask Before Smoke Season

Forward-looking facility teams increasingly treat wildfire smoke the same way they treat winter storms or heat waves: as a seasonal operational risk.

Before wildfire season begins, three questions can help identify vulnerabilities:

1. How much airflow headroom does the HVAC system have?

Buildings operating near maximum pressure limits may struggle when filters load rapidly during smoke events.

2. Are replacement filters and components secured in advance?

Regional smoke events often trigger sudden demand spikes, delaying shipments and increasing costs.

3. Are response protocols clearly defined?

Teams should know when to increase filtration, adjust outdoor air intake, and communicate with tenants.

Facilities that answer these questions early often respond faster and maintain better building performance during smoke days.

The Bottom Line

Facilities without strong preparedness can see indoor pollutant levels rise to 75% of outdoor concentrations during wildfire events, while prepared buildings cut that exposure nearly in half (NCCEH). Harvard-led analyses estimate that wildfire smoke causes tens of billions of dollars in annual economic damage, largely through absenteeism and healthcare costs (Harvard). From a mechanical standpoint, smoke accelerates filter clogging, forces fans to operate at higher energy use, and shortens asset lifespan, driving up costs across operations and capital planning (Facility Executive).

The buildings that are prepared today will reduce alarms, complaints, and unplanned expenses tomorrow, while earning the trust of the people inside. Tenants will remember which buildings felt steady, cared for, and resilient when the outside air was anything but.

Breathe Easy: The Essential Guide to Navigating IAQ Business Regulations in Canada

Jennifer Crowley
Mar 4, 2024
3 min read

Updated: Jul 8, 2024

Building Facilities Manager Reviewing Site Compliance Checklist — Regular monitoring of IAQ parameters ensures ongoing adherence to standards.

Welcome, Canadian business leaders! Let's delve into a crucial yet often overlooked aspect of workplace health: indoor air quality (IAQ). The quality of the air we breathe during our workday significantly influences our well-being and productivity. In fact, A Canadian study revealed that nearly one-third of employee sick days are due to symptoms worsened by poor indoor air quality (IAQ). Similarly, a Massachusetts study saw a 35% reduction in sick leave in offices with good IAQ, saving businesses approximately $400 per employee annually. Imagine the impact of saving $400 per employee on your yearly budget.

Fortunately, Canada has robust IAQ regulations to ensure that our indoor environments promote health and safety. However, understanding, achieving, and maintaining compliance with these regulations can be intricate. Fear not! In this comprehensive guide, we will provide you with detailed insights and practical guidance on navigating IAQ regulations and standards in Canada, empowering you to keep your business compliant while prioritizing the health and comfort of your team.

Understanding IAQ Regulations and Standards:

To begin, let's grasp the fundamentals:

Image of textbooks with the title Rules & regulations

1. Health Canada sets forth comprehensive guidelines for IAQ, encompassing parameters such as temperature, humidity, ventilation, and air contaminants. These guidelines serve as the cornerstone for maintaining optimal IAQ in your workplace. If you are not familiar with them, please click the link above to learn more.

2. Many Canadian provinces also impose their own specific IAQ regulations, necessitating familiarity with local requirements. The chart below provides support in locating your Provincial regulations:

Chart outlining Provincial IAQ legislation guidance — Provincial IAQ Requirement Overview

3. Building codes also dictate ventilation systems, air filtration standards, moisture control measures, radon mitigation and the types of construction materials used to uphold IAQ standards in commercial spaces.

Achieving Compliance:

Now, let's strategize.

1. Initiating an IAQ assessment is paramount.

This assessment involves a thorough examination of your indoor air quality to identify potential issues and inform your mitigation plan. Depending on the size, age, and structure of the building, your IAQ audit may include air sample collection, a mould and moisture assessment, HVAC System evaluation and even an occupant survey. Consider engaging professional IAQ consultants for comprehensive and accurate results.

2. Ensure that your ventilation system operates efficiently.

Adequate airflow is crucial for circulating clean air throughout your workspace. Building codes typically specify minimum ventilation rates for various types of spaces within commercial buildings. These rates ensure adequate airflow to dilute indoor air pollutants and maintain acceptable IAQ levels. For example, the National Building Code of Canada (NBC) outlines ventilation requirements based on occupancy type, building size, and specific activities conducted within the space. Implementing a rigorous maintenance schedule and investing in high-quality air filters are key measures to mitigate pollutants effectively.

3. Adopting practices to minimize indoor pollutants, such as utilizing low-emission materials, prohibiting smoking, restricting the use of volatile organic compound emitting products and implementing stringent cleaning protocols, further enhances IAQ.

Furthermore, ensuring HVAC systems are regularly maintained, utilizing high efficiency air filters, and leveraging demand-controlled ventilation systems that adjust airflow based on occupancy levels and indoor air quality parameters all help to keep pollutants at compliant levels.

Maintaining Compliance:

Once your IAQ protocols are in place, maintaining compliance becomes imperative:

1. Regular monitoring of IAQ parameters ensures ongoing adherence to standards. Establish a systematic schedule for assessing air quality and promptly address any deviations from prescribed norms.

2. Equally vital is the implementation of a robust maintenance regimen. Regular servicing of HVAC systems and diligent upkeep of building infrastructure are essential to preserve optimal IAQ conditions.

3. Additionally, staying abreast of changes in IAQ regulations is crucial. Continuously monitor industry updates and engage with regulatory agencies to remain informed about evolving compliance requirements.

Navigating IAQ regulations may initially appear daunting, but armed with the right knowledge and approach, you can ensure a healthy indoor environment for your business. By comprehending the regulations, implementing effective strategies, and prioritizing maintenance, you not only meet legal requirements but also cultivate a workplace that promotes well-being and productivity. Remember, investing in IAQ compliance is an investment in the health and success of your business. Keep breathing easy, knowing that you're making a positive impact on your team and your bottom line.

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