Wildfire smoke has recently impacted the Wasatch Back. Even when windows and doors are closed, smoke can still find its way inside through small gaps, fresh-air intakes, ERVs/HRVs, and normal daily use of the home. The good news is that your HVAC system can help reduce smoke, dust, pollen, and allergens if it is set up correctly.
The first step during smoky days is to limit outside air. Keep windows and doors closed, and if your home has a fresh-air intake, ERV, or HRV, make sure it is not actively pulling smoky air into the home. During smoke events, it is often better to recirculate and filter the air already inside the house rather than bring in more outdoor air.
Next, run your HVAC fan more often. Setting the fan to “On” instead of “Auto” helps move indoor air through the filter more consistently. This is especially helpful during wildfire smoke events and allergy season. If your system can handle it, a MERV 13 or higher filter can make a big difference. Some premium systems can use MERV 16, but airflow matters. A filter that is too restrictive can create problems, so the right filter depends on the system.
After a heavy smoke event, change the filter. Smoke particles can load up a filter quickly, and a dirty filter can restrict airflow. For many homes in our area, filters should be changed more often during smoke season, especially if the fan is running continuously.
Portable HEPA air cleaners can also help, especially in bedrooms or a main living area. Creating one cleaner room during heavy smoke events can be a simple way to protect the space where your family sleeps or spends the most time.
For allergies, the same basics apply: better filtration, cleaner coils, regular maintenance, and controlled ventilation. Dust, pollen, pet dander, and smoke are all easier to manage when the system has good filtration and enough airflow. Whole-home humidifiers can also improve comfort in our dry climate, especially for dry skin, bloody noses, static electricity, hardwood floors, and instruments. Just be careful not to over-humidify; if windows are sweating, humidity is too high.
The main takeaway: do not wait until the house smells like smoke. Check your filter, know whether your home is bringing in outside air, run the fan during smoke events, and make sure your home has the right filtration for your system.
Team Cheever is happy to consult with homeowners on indoor air quality options, including filtration upgrades, wildfire smoke strategies, whole-home humidifiers, air scrubbers, and ventilation solutions. Every home is a little different, and the best IAQ setup is the one that fits your system, your home, and your family’s needs.
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