The Importance of Indoor Air Quality in Older Buildings
- Jennifer Crowley
- Jul 4, 2024
- 5 min read
Updated: Jul 8, 2024
Indoor air quality (IAQ) is a critical aspect of building management that directly affects the health and well-being of occupants. This importance is magnified in older buildings, where outdated infrastructure, prolonged wear and tear, and the presence of potentially hazardous materials can significantly compromise air quality.
For building owners and facility managers, ensuring good air quality in older buildings is not just a matter of comfort; it is essential for maintaining the health and safety of those who live and work in these environments. Poor IAQ in such buildings can lead to various health issues, decreased productivity, and non-compliance with modern regulatory standards, making it a fundamental concern that demands urgent action.
Common Air Quality Issues in Older Buildings
Older buildings often face several air quality challenges due to years of accumulated wear and tear and outdated construction practices. These issues can severely impact IAQ, making it crucial to identify and address them to ensure a healthy living and working environment. Common air quality problems in older buildings include:
Mold and Mildew: Due to water damage or high humidity, mold and mildew can thrive in older buildings, releasing spores into the air.
Dust and Allergens: Accumulated dust and debris in older buildings can harbor allergens, worsening respiratory conditions.
Outdated HVAC Systems: Inefficient and outdated HVAC systems may not adequately filter air, leading to the circulation of pollutants.
Asbestos and Lead: Many older buildings still contain asbestos and lead-based materials, which can pose serious health risks if disturbed.
Chemical Pollutants: Use of old construction materials and maintenance products can introduce volatile organic compounds (VOCs) into the indoor environment.
Health Impacts
The poor indoor air quality in older buildings can lead to numerous health problems for occupants, emphasizing the need for immediate attention. Exposure to contaminants commonly found in older buildings can result in a range of adverse health effects, including:
Respiratory Issues: Exposure to mold spores, dust, and other airborne pollutants can exacerbate asthma, bronchitis, and other respiratory conditions.
Allergies: Increased levels of allergens such as dust mites and pollen can trigger allergic reactions, leading to discomfort and reduced quality of life.
Productivity Loss: Poor air quality can cause headaches, fatigue, and difficulty concentrating, reducing productivity and overall well-being.
Long-Term Health Risks: Chronic exposure to pollutants like asbestos and lead can lead to severe health conditions, including cancer and neurological disorders.
Regulatory Concerns in Older Buildings
Ensuring compliance with air quality standards and regulations is critical for older buildings, as failing to meet these requirements can lead to significant health risks and legal issues. Both Canada and the US have established stringent guidelines to protect indoor air quality, but older buildings often struggle to meet these standards due to several factors:
Canadian Regulations:
Health Canada: Sets IAQ guidelines that include maximum acceptable concentrations for common indoor pollutants such as carbon monoxide, formaldehyde, and mold spores. Older buildings might not have adequate ventilation systems to meet these guidelines.
National Building Code of Canada: Requires proper ventilation and air filtration systems to maintain acceptable IAQ. Many older buildings were constructed before these codes were established, leading to inadequate ventilation and outdated HVAC systems.
Provincial Regulations: Provinces like Ontario have specific requirements under the Ontario Building Code, focusing on ventilation and mold prevention. Older buildings often lack the modern infrastructure necessary to comply with these regulations. The Canadian Centre for Occupation Health and Safety provides a great resource to link to provincial guidance.
See also ASHRAE Standards below
United States Regulations:
Environmental Protection Agency (EPA): Establishes IAQ guidelines and provides resources for maintaining healthy air in buildings. The EPA’s standards include acceptable levels for various indoor pollutants. Older buildings often have outdated or poorly maintained HVAC systems that fail to filter out pollutants effectively.
Occupational Safety and Health Administration (OSHA): Mandates safe working conditions, including standards for indoor air quality in workplaces. Older buildings may not meet these standards due to deteriorating infrastructure and lack of modern air purification systems.
ASHRAE Standards: The American Society of Heating, Refrigerating, and Air-Conditioning Engineers sets voluntary IAQ standards that are widely adopted, covering ventilation rates and air filtration. Older buildings may not have been designed to meet these standards, resulting in subpar IAQ.
Older buildings often fail to meet these standards due to outdated infrastructure and lack of modern air filtration systems, which can result in regulatory fines and increased health risks for occupants. Additionally, many of these buildings were constructed before current IAQ standards were established, making retrofitting necessary but often challenging and costly.
Indoor Air Quality in Older Buildings Case Study
Toronto Distillery District Energy Efficiency & IAQ Project
The Historic Gooderham & Worts Distillery District, opened in 2003, is widely regarded as Ontario's premier arts, culture, and entertainment destination, and one of its hottest tourist attractions. This internationally acclaimed village features brick-lined streets and 47 vibrantly restored 19th-century Victorian industrial buildings. As a major dining, shopping, and cultural hub in Toronto, Canada, the importance of maintaining and upgrading these historic buildings to achieve better indoor air quality (IAQ) is paramount.
In December 2021, the Distillery District management team sought Blade Air's help to improve IAQ without the high costs and energy demands of HEPA or UV solutions. They needed an efficient, cost-effective solution to enhance air quality while reducing their carbon footprint.
Blade Air recommended their Pro Filter electromagnetic filters, which outperform HEPA filters in capturing particulate matter and inactivating viruses, with significantly lower energy requirements. The Distillery District conducted trials in two buildings, resulting in impressive outcomes:
Energy Savings: Up to 75% reduction in fan motor consumption.
Improved Filtration: 2.25 times better performance in capturing and removing bacteria from the airstream compared to MERV-13 filters.
Enhanced Air Quality: Significant improvement in indoor air quality, creating a healthier environment for occupants.
Cost-Effective Solution: Achieved high efficiency and superior air quality without the prohibitive costs of HEPA or UV solutions.
Upgrading these historic buildings with modern air quality solutions ensures they continue to be a safe, healthy, and attractive destination for visitors and tenants alike. Click here to read the full Case Study.
Blade Air IAQ Solutions
For building owners and facility managers, addressing IAQ is not just a regulatory requirement but a fundamental concern that directly impacts the health and satisfaction of occupants. The adverse effects of poor air quality, from respiratory issues to productivity loss, highlight the need for immediate action.
By implementing Blade Air’s solutions, you can ensure your building meets and exceeds current air quality standards, safeguarding health, avoiding potential legal and financial repercussions, and creating safer, healthier environments for everyone.
Blade Air is dedicated to providing expert guidance and retrofitting services to help you achieve these goals. Contact Blade Air today to learn how we can help transform the air quality in your building, ensuring a healthier and more comfortable environment for all occupants.
