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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

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Wildfire smoke has moved from an environmental concern to a business risk for the built environment. One that affects operations, budgets, tenant trust, and even asset value. Smoke does not stay confined to forests. It drifts hundreds of kilometers into cities, infiltrates through HVAC intakes, window gaps, and loading docks, and turns buildings into frontline defense systems for the people inside them.


For facility managers, this shift reframes wildfire smoke as a predictable operational stress event, on par with a winter storm, a power outage, or a heat wave. For CRE executives, it reframes it as a reputational and financial challenge; one that determines tenant satisfaction, energy costs, and the long-term resilience of portfolios.


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.

Energy Efficiency and Indoor Air Quality: Striking the Right Balance

  • Writer: Jennifer Crowley
    Jennifer Crowley
  • Mar 25, 2024
  • 3 min read

Updated: Jul 8, 2024

Bright white office interior with exposed ducting and a lot of natural light
As buildings become more airtight to conserve energy, healthy IAQ becomes increasingly challenging.

In the pursuit of sustainable building practices, achieving energy efficiency is a top priority. However, this goal must be balanced with another critical aspect of building performance: indoor air quality (IAQ). As buildings become more airtight to conserve energy, maintaining healthy IAQ becomes increasingly challenging. In this blog post, we will delve into the importance of striking the right balance between energy efficiency and IAQ, exploring strategies to achieve both objectives effectively.

 

The Importance of Indoor Air Quality: Indoor air quality plays a significant role in occupant health, productivity, and overall well-being. Poor IAQ can lead to various health issues, including respiratory problems, allergies, and fatigue. Additionally, it can impact cognitive function and comfort levels, ultimately affecting occupant satisfaction and performance. Therefore, ensuring high IAQ is essential for creating healthy and productive indoor environments.

 

Challenges of Energy Efficiency Measures: While energy efficiency measures are crucial for reducing environmental impact and operational costs, they can sometimes compromise IAQ. Strategies such as air sealing, insulation, and mechanical ventilation systems may inadvertently lead to indoor pollutants being trapped inside buildings or inadequate ventilation, resulting in poor IAQ. Balancing energy efficiency measures with IAQ considerations is therefore paramount to avoid adverse health effects and ensure occupant comfort.


Strategies for Achieving Balance

Image of indoor ceiling ventilation duct from below with a towering ficus tree in the forefront
Enhance IAQ with high-efficiency air filtration systems without compromising energy efficiency.

  1. Proper Ventilation Design: Implementing effective ventilation systems is essential for maintaining adequate indoor air circulation and minimizing pollutant buildup. Incorporating demand-controlled ventilation systems that adjust airflow based on occupancy levels and pollutant concentrations can optimize energy efficiency while ensuring good IAQ.

  2. Air Filtration Technologies: Invest in high-efficiency air filtration systems capable of capturing a wide range of indoor pollutants, including dust, pollen, volatile organic compounds (VOCs), and pathogens. HEPA filters and electrostatic precipitators are examples of advanced filtration technologies that can remove airborne contaminants, enhancing IAQ without compromising energy efficiency.

  3. Indoor Air Quality Monitoring: Employ real-time IAQ monitoring systems to continuously assess indoor air conditions and detect any deviations from acceptable levels. By promptly identifying IAQ issues, building operators can implement corrective actions and fine-tune HVAC systems to maintain optimal air quality while minimizing energy consumption.

  4. Building Material Selection: Choose low-emission building materials and furnishings to minimize the release of indoor pollutants such as formaldehyde, volatile organic compounds (VOCs), and particulate matter. Opting for eco-friendly and sustainable materials can contribute to healthier indoor environments and reduce the need for continuous ventilation to dilute indoor pollutants.

  5. Integrated Design Approach: Adopt an integrated design approach that considers both energy efficiency and IAQ from the initial stages of building planning and design. Collaboration between architects, engineers, HVAC specialists, and indoor environmental quality experts is essential to develop holistic solutions that prioritize occupant health and comfort while optimizing energy performance.


Outdoor ventilation units on top of a buuilding
Recalibrating ventilation systems can result in healthier and more productive environments.

Case Study: Balancing Energy Efficiency and IAQ

In a recent project, a commercial office building implemented a series of energy efficiency measures to reduce operational costs and environmental impact. However, occupants began reporting symptoms such as headaches, fatigue, and respiratory irritation, indicating potential IAQ issues. Upon investigation, it was discovered that the building's ventilation system was not providing adequate fresh air intake, leading to indoor air stagnation and pollutant buildup. By recalibrating the ventilation system and upgrading air filtration technologies, the building successfully improved IAQ while maintaining energy efficiency, resulting in healthier and more productive indoor environments for occupants.

 

Achieving energy efficiency without compromising indoor air quality requires a careful balance of strategies and considerations. By implementing proper ventilation design, advanced air filtration technologies, real-time IAQ monitoring, sustainable building materials, and an integrated design approach, buildings can optimize both energy performance and IAQ. By striking the right balance between energy efficiency and IAQ, we can create healthier, more sustainable indoor environments for occupants while reducing environmental impact and operational costs.

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