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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.

Retrofitting Indoor Air Quality (IAQ) Systems for Existing Buildings: Overcoming Challenges and Implementing Solutions

  • Writer: Jennifer Crowley
    Jennifer Crowley
  • Apr 9, 2024
  • 3 min read

Updated: Jul 8, 2024

Exterior of dilapidated heritage building with broken windows faded facade and ornate design
By prioritizing IAQ initiatives, building owners can create healthier, more productive environments for their occupants while enhancing the overall value of their properties.

As the importance of indoor air quality (IAQ) continues to gain recognition, many building owners and facility managers are seeking ways to enhance IAQ in their existing structures. Retrofitting IAQ systems in older buildings presents unique challenges, but with the right strategies and solutions, it is possible to achieve significant improvements in air quality and occupant comfort.


In this blog post, we'll delve deeper into the challenges associated with retrofitting IAQ systems and explore effective solutions, including a detailed case study of a heritage building that overcame limited space, compatibility issues, and cost concerns.


Challenges of Retrofitting IAQ Systems:

  1. Limited Space: Retrofitting IAQ systems in existing buildings often poses challenges due to limited space for new equipment and ductwork. This can make it difficult to install advanced filtration systems or ventilation upgrades without major renovations.

  2. Compatibility Issues: Existing HVAC systems may not be compatible with modern IAQ technologies, making it challenging to integrate new components seamlessly. Compatibility issues can arise with control systems, airflow configurations, and equipment compatibility.

  3. Cost Concerns: Retrofitting IAQ systems can be costly, especially for older buildings with outdated infrastructure. Building owners may be hesitant to invest in IAQ improvements due to budget constraints or concerns about the return on investment.

  4. Disruption to Occupants: Retrofitting IAQ systems may require temporary disruptions to building operations, causing inconvenience to occupants and potential productivity losses. Minimizing disruption while implementing IAQ upgrades is essential to maintaining tenant satisfaction.


Solutions for Successful Retrofitting:

  1. Comprehensive Assessment: Begin the retrofitting process with a comprehensive assessment of the existing IAQ conditions and HVAC systems. Identify areas for improvement and prioritize upgrades based on their potential impact on air quality and occupant health.

  2. Tailored Solutions: Implement IAQ solutions that are tailored to the specific needs and challenges of each building. This may include installing high-efficiency filtration systems, upgrading ventilation equipment, or integrating air purification technologies.

  3. Strategic Planning: Develop a strategic retrofitting plan that minimizes disruption to building occupants while maximizing the efficiency of IAQ upgrades. Coordinate with tenants and schedule work during off-peak hours to minimize inconvenience.

  4. Investment in Technology: Leverage advanced IAQ technologies and smart building solutions to optimize air quality and energy efficiency. Investing in state-of-the-art filtration systems, sensors, and monitoring tools can provide real-time insights and ensure optimal IAQ performance.

  5. Collaboration with Experts: Partner with IAQ experts, HVAC contractors, and building engineers to develop and implement effective retrofitting strategies. Their expertise and guidance can help you navigate complex challenges and ensure successful IAQ upgrades.

 

Interior photo of heritage building exposed HVAC system
Begin the retrofitting process with a thorough assessment of existing IAQ conditions & HVAC systems.

Case Study: 

In a recent retrofitting project for a heritage building, Blade Air faced numerous challenges including limited space, compatibility issues, and cost concerns. However, by leveraging Blade Air filtration products designed to fit any HVAC system, conducting minor equipment upgrades, and developing a detailed plan, they overcame these hurdles. Blade Air provided assurances that the energy, maintenance, and logistical savings resulting from the IAQ upgrades would balance out the initial investment costs within two years, ultimately saving time and money for the building owner.

 

Retrofitting IAQ systems for existing buildings presents challenges, but with careful planning, strategic solutions, and collaboration with experts, it is possible to achieve significant improvements in indoor air quality and occupant comfort. By prioritizing IAQ initiatives and investing in modern technologies, building owners can create healthier, more productive environments for their occupants while enhancing the overall value of their properties.

 

Are you considering retrofitting IAQ systems in your existing building? Contact Blade Air today to learn more about our IAQ solutions and how we can help you achieve your indoor air quality goals.

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