If you live in Western Washington, you've probably seen how quickly clear skies can turn smoky. When wildfire smoke moves in, it doesn't just affect the air outside, it can also impact the air inside your home.
While you can't control outdoor smoke, there are steps you can take to improve the air inside your home. With the right HVAC system, proper air filtration, and a few simple habits, you can help reduce smoke particles and create a healthier, more comfortable environment for your family. Your heating and cooling system plays an important role in filtering the air you breathe, and a few small adjustments can make a noticeable difference during wildfire season.
Since 1987, Brennan Heating, Air Conditioning, Plumbing & Electrical has helped homeowners throughout Western Washington improve their comfort and indoor air quality. Whether you're looking for better air filtration, a whole-home air cleaner, duct cleaning, or expert guidance, our experienced team is here to help you breathe easier.
In this guide, you'll learn how wildfire smoke affects your home and health, how your HVAC system can help improve indoor air quality, practical steps you can take to reduce smoke inside your home, and when it's time to contact Brennan about improving your indoor air quality
What Wildfire Smoke Does to Your Home and Health
Wildfire smoke contains microscopic particles known as PM2.5 that can travel deep into your lungs. When smoke enters your home, it may cause burning eyes, coughing, shortness of breath, headaches, and fatigue. Children, older adults, and people with asthma, allergies, heart disease, or other respiratory conditions are especially vulnerable.
These tiny particles can also settle throughout your home and continue circulating through your HVAC system long after outdoor conditions improve. The good news is that your HVAC system can help reduce many of those particles when paired with the proper air filter and indoor air quality products. Brennan offers high-efficiency air filters, whole-home air cleaners, UV air purification systems, humidifiers, duct cleaning, and Aeroseal duct sealing to help homeowners breathe cleaner air year-round.
Step 1: Upgrade to High-Efficiency Air Filters
Many homes use standard furnace filters designed to protect HVAC equipment rather than improve indoor air quality. During wildfire season, upgrading to a higher-efficiency filter can help capture more smoke particles before they circulate throughout your home.
Not every HVAC system is designed to use every filter. Filters with a higher MERV rating remove more airborne particles, but some systems cannot handle the added airflow resistance. Brennan can help you choose a filter that balances cleaner air with proper system performance.
During smoky conditions, check your filter more often, replace it when it becomes dirty, make sure it fits properly, and keep an extra filter on hand so you're prepared if air quality suddenly worsens.
Step 2: Use Your HVAC System to Circulate and Filter Indoor Air
Your goals during smoky weather are simple: limit the amount of new smoke entering your home and keep filtering the air that's already inside.
Setting your thermostat fan to 'On' instead of 'Auto' allows more air to pass through your filter, helping your HVAC system continuously circulate cleaner air. Keep windows and exterior doors closed, close fireplace dampers, and seal noticeable air leaks. If your home has a fresh-air ventilation system, Brennan can help determine the best settings during wildfire smoke events.
Step 3: Add Portable Air Cleaners in Key Rooms
Portable HEPA air purifiers can provide additional filtration in bedrooms, living rooms, and home offices. Choose a unit that's properly sized for the room where it will be used.
Portable air purifiers work well in individual rooms, while whole-home air cleaners help improve air quality throughout your entire home. If you're looking for year-round protection from smoke, allergens, dust, and pet dander, Brennan also offers whole-home air cleaners, UV air purification systems, humidifiers, duct cleaning, and Aeroseal duct sealing.
Step 4: Create a Clean Room During Heavy Smoke
When outdoor air quality reaches unhealthy levels, designate one room where your family can spend time with cleaner air. Keep windows and doors closed, run a properly sized HEPA air purifier, limit trips in and out of the room, and continue circulating air through your HVAC system using a clean, high-efficiency filter.
A clean room can be especially helpful for children, older adults, and anyone with asthma or other respiratory conditions until outdoor air quality improves.
Step 5: Daily Habits That Support Cleaner Indoor Air
Small daily habits can make a noticeable difference during wildfire season. Avoid candles, incense, and indoor smoking during smoke events. Vacuum with a HEPA-filter vacuum whenever possible, leave smoky shoes and jackets near the entryway, and reduce activities that stir up dust indoors.
Your HVAC system also needs a little extra attention during wildfire season. Replace your air filter more frequently when smoke is heavy, keep supply and return vents unobstructed, and schedule annual HVAC maintenance to help your heating, cooling, and indoor air quality equipment operate efficiently.
When It's Time to Call Brennan
If your home continues to smell smoky, airflow feels weak, you're unsure which filter is right for your HVAC system, or you're interested in improving your indoor air quality, it may be time to schedule an appointment with Brennan.
During your appointment, Brennan's experienced technicians will discuss your indoor air quality concerns, inspect your HVAC system as needed, explain your options clearly, and recommend solutions based on your home's needs and budget—without pressure. Whether you need a simple filter upgrade or a complete whole-home indoor air quality solution, we'll help you find the right fit.
How Brennan Helps Western Washington Homeowners
Since 1987, Brennan Heating, Air Conditioning, Plumbing & Electrical has helped homeowners throughout Western Washington improve their comfort and indoor air quality. From high-efficiency air filters and whole-home air cleaners to air purification systems, duct cleaning, humidifiers, and Aeroseal duct sealing, our experienced technicians can recommend the right solution for your home.
Wildfire smoke doesn't have to take over the comfort of your home. Whether you need a simple filter upgrade or a complete indoor air quality solution, Brennan is here to help.
Schedule an appointment with Brennan today and let our experienced technicians help you find the right indoor air quality solutions for your home, so you can enjoy a cleaner, healthier home during wildfire season and beyond.