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indoor air quality hvac morrison-maierle bozeman montana

Ways to Improve Indoor Air Quality

By Carly Svenvold, EI, LEED AP BD+C – It comes as no surprise that it’s healthy to spend time outside. Ongoing research points increasingly toward the physical and mental benefits of spending time outdoors, especially in nature. But sometimes, that’s challenging, or even impossible. Even without a worldwide pandemic, the average person spends 87% of their time in buildings and an additional 6% of their time in vehicles—that’s a whopping 93% of every day spent indoors.

Given recent stay-at-home orders and social distancing measures associated with COVID-19, we have been spending even more time than usual indoors. All this time inside can have a negative impact on our lives both mentally and physically. If you’re feeling run down or downright sick, it may be time to take a closer look at your indoor living environment.

indoor air quality hvac morrison maierle engineers
Taking a look at your air filters is one way to improve your indoor living environment.

Generally speaking, markers of an unhealthy indoor environment manifest themselves as physical symptoms. Common ailments may include headaches, upper respiratory irritation, itchy skin, dizziness or nausea, and fatigue. These usually stem from a lack of fresh air inside the building and a multitude of indoor contaminants. However, if these symptoms are extreme, you may have a “sick building.”

3 Steps to Improve Indoor Air Quality

If you are experiencing any of the symptoms mentioned above, consider these tips for increasing the health of your building.

MERV filter morrison maierle HVAC engineering
Replacing your air filters can improve the quality of your indoor air while also decreasing your energy bills. One way to do this is to upgrade to a higher-quality filter. Start by looking for the highest MERV (Minimum Efficiency Reporting Value) rating compatible with your filter rack and furnace fan. (photo: filtersfast.com)

Increase ventilation
Ventilating a building not only brings in fresh air but also removes airborne contaminants that accumulate inside a building. These contaminants are most often carbon dioxide and occupant-generated particulate matter (in other words, dead skin, and airborne moisture), volatile organic compounds (VOCs) off-gassed from adhesives and cleaning chemicals, and even mold spores. This can be done by simply opening a window when outdoor conditions are favorable or ducting fresh air directly to your HVAC system.

Replace or upgrade filters
Best practices suggest air filters on mechanical equipment should be replaced twice a year, but doing so more often can improve the quality of your indoor air while also decreasing your energy bills. Consider replacing your filters, or even upgrading to a higher-quality filter. Start by looking for the highest MERV (Minimum Efficiency Reporting Value) rating compatible with your filter rack and furnace fan. The higher the MERV rating, the higher the level of filtration, and the fewer harmful contaminates reach your airstream. Though you cannot completely filter out viral pathogens, you can eliminate most dust, dander, and other allergens.

Remove potential contaminants and allergens
Below are a few items to be aware of when attempting to remediate contaminants and allergens:

  • Dust and debris can collect in ductwork, especially when it is connected to floor registers. Consider a duct cleaning service, or do it yourself.
  • Mold is a common allergen and can be destructive in the built environment. If you suspect the presence of mold, consider working with a professional testing service to assess the issue and mitigate it and its root cause as soon as possible.
  • Remove VOC contaminant sources. Common sources include craft materials, office printing supplies, household cleaners, solvents, and air fresheners. If you cannot get rid of hazardous materials, store them in a dedicated space, preferably with an exhaust fan. Be sure to follow all hazardous chemical storage requirements. Refer to EPA guidelines if you want to learn more about VOCs.
If you suspect the presence of mold, consider working with a professional testing service to assess the issue and mitigate it and its root cause as soon as possible.

As we transition to our “new normal,” some of the habits formed, such as staying indoors more often, will likely stick. Now, more than ever, it is especially important to make sure your indoor environment isn’t what’s making you sick.

There are several good resources available, and as we gradually move back into our office spaces, there is more information on building operations published every day. I found this column by ASHRAE particularly helpful.

Read The Article Here

Carly Svenvold, EI, LEED AP BD+C is a mechanical engineer in Morrison Maierle’s Bozeman office. She specializes in design support for HVAC and plumbing in large commercial buildings as well as LEED projects. Outside of the office, you’ll most likely find her biking, climbing, or skiing in the mountains around Bozeman.

Technical review provided by Ryan Thomson, PE, and Matt Carr, PE

2020-06-16
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