Session Details

Indoor Air Quality Matters- The Importance of Baseline IAQ & Clean Air Distribution Systems

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About this session:

Through proper diagnostics, a baseline understanding of the condition and performance of a mechanical and air distribution system can be established. From this baseline, an informed plan can be developed to clean, restore and maintain the HVAC system to supply healthy, pathogen free indoor air quality. When engaging in indoor air quality projects, understanding the diagnostics of buildings before investing in the work has many benefits that include: reducing environmental risks, more accurate maintenance planning, accountability and compliance, ensuring occupant safety and improving overall staff confidence. When assessing indoor air quality, a holistic approach is imperative while keeping in mind the EPA and CDC if there are outbreaks is advisable. Our assessments cover the whole gamut of indoor air quality parameters including building baseline conditions, HVAC hygiene and performance, IAQ product efficacy if any products are used inside the building envelope and indoor air quality monitoring. Once the data has been obtained, best practices lean on utilizing the information before executing maintenance in order to optimize work and focus on the areas that need it the most. The building microbiome contains an intricate balance of healthy constituents and unhealthy contaminants that can be targeted and eliminated upon discovery. They include allergens, bacteria, mold and viruses. Testing the wall and floors for moisture as well as measuring overall temperature and humidity all play a role in the health of a building. Performing the envelope test and balance is also an integral part of the evaluation process. You could do everything right to correct the deficiencies on the interior, but if the exterior is not addressed then you have put yourself in a double-edged sword position. A consultant who knows how to properly fix the problem will recommend the full solution. Building air leakage doesn't just have a negative impact on the energy performance but will force the HVAC system to overwork and fail prematurely. Furthermore, it encourages air pressures in the building that were not designed or accounted for, which causes more issues beyond IAQ. When left unaddressed for years, moisture infiltration is inevitable leading to mold, mildew, and deteriorating insulated building assemblies that make up the building envelope. Unfortunately, there is no one-size-fits-all when it comes to building science and specifying the correct products and systems for buildings. The geography, occupancy, and orientation of a building plays a massive part in a building's lifespan. Assuming the design appropriately accommodates those criteria before anything else then the architect has set the building owners project up for success. Humans are wired to appreciate architecture and design. This plays an important role in all societies, but if the building ultimately doesn't make money, it is not an asset. Investing in our spaces and places will always pay dividends to the building owner and end user. After the IAQ has been evaluated, the HVAC has been assessed, and efficacy tested the key part to ensuring best efforts is to continue to monitor these conditions. Building Management Systems (BMS) or Automated Building Systems (ABS) can handle this for you. Even today with new homes (smart homes) it has become the norm, and rightly so. Just by looking at an app on our phone we can see how our place of living, working, and playing is performing, and can catch issues before they become problematic. Comprehensive field and laboratory analysis determines the biological conditions and performance of a building. We will cover the main assays for baseline including carbon dioxide, particulate matter, temperature, and relative humidity, building pressurization and bypass and how this impacts overall IAQ. Water intrusion, air leakage and pressure issues as well as VOC sources are also part of comprehensive indoor air quality analysis. ASHRAE Standard 62.1 focuses on natural ventilation, ventilation rate procedure and indoor air quality procedure. Nineteen key components have been identified that play a role in ventilation that will be discussed. Twenty-seven total areas for inspection and maintenance are referenced including monthly testing for Legionella in cooling towers. Thirteen areas deal with cleanliness. Reference charts will be provided with time frames for inspection. Field efficacy studies are presented with their associated benefits. Third party validation studies are helpful in order to provide data that confirms if the product is working as designed, shows deficiencies, ensures safe operations and manages risk if or where products are ineffective. As we see a trend toward more sustainability, a circular economy welcomes recycling and reusing materials. Evaluating air handlers in order to tag them for replacement or refurbishment is an important part of contributing to the circular economy. Many air handlers are up for replacement that can be deep cleaned and coated with high performance coatings instead of taking them to the landfill. There are times when the coil and/or blower housing may need to be replaced but the overall compartments of the air handler can remain in place. Understanding when this kind of project can be performed plays a key role in reducing capital spending and sustaining capital equipment to increase its useful life.
Start Time:

11/2/2022 8:00 AM

End Time:

11/2/2022 9:00 AM



1. Understand how to identify a candidate for restoration and the elements of hygiene assessment when conducting a facility diagnostics
2. Identify the multiple components of HVAC management, and develop a plan to clean, restore, and maintain an existing system.
3. Discuss an indoor air quality baseline evaluation.
4. Review the use and benefits of in-room air purifiers.


Session ID:

W1.CB

Room Number:

Concorde B

Audience:

Intermediate

CEU:

1 hour

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