How to Improve Indoor Air Quality in Your Colorado Home

Summer in Colorado is beautiful, but it can also be brutal on your indoor air quality.

Between wildfire smoke, dry air, dust, pollen, and increased time indoors with the AC running, your home’s air might not be as clean as you think.

And since poor indoor air quality can trigger allergies, asthma, headaches, and fatigue, it’s something every homeowner should pay attention to, especially during the summer months.

At First String Heating and Air, we help Colorado families create cleaner, healthier indoor environments year-round.

Here’s what you need to know and how to start improving your air today.

Why Summer Air Quality Gets Worse in Colorado

During the summer, your windows stay shut to keep the cool air in, but that means pollutants, allergens, and dust often get trapped inside your home. Add in seasonal wildfire smoke or pollen surges, and indoor air can quickly become more polluted than outdoor air.

Summer Air Quality Culprits

1. Pollen and plant spores
2. Pet dander
3. Household dust and VOCs (from cleaners or paints)
4. Smoke from wildfires or nearby grilling
5. Mold and mildew from humidity or leaky AC systems

1. Change Your HVAC Filter

Your HVAC system acts as your home’s first line of defense but only if the filter is clean. A clogged or outdated filter can’t trap dust, pollen, or smoke particles effectively.

Summer tip: During heavy use or smoky conditions, change your filter every 30–60 days instead of every 90.

Consider upgrading to a HEPA or MERV 13+ rated filter if your system allows. These trap finer particles and allergens better than standard filters.

2. Keep Humidity in Check

Colorado summers may be dry overall, but your home’s humidity levels still matter. Too much humidity can promote mold and bacteria growth, while too little can cause respiratory irritation and static electricity.

Ideal indoor humidity level: 35–50%

If you struggle to maintain balance, we can help with whole-home humidifiers or dehumidifiers, depending on your needs.

3. Air Purifier or Air Scrubber

If someone in your home has allergies, asthma, or respiratory concerns, a whole-home air purification system can make a big difference.

Unlike plug-in purifiers that only clean one room, systems like air scrubbers or UV air purifiers connect to your HVAC system and treat the air throughout your entire home removing everything from smoke particles to bacteria and odors.

4. Don’t Forget Ductwork

Even if your air looks clean, the inside of your ducts might tell a different story. Dust, pet hair, mold spores, and other pollutants can build up in your ducts and circulate every time the AC kicks on.

If your home is older or you’ve recently renovated, a duct inspection and cleaning may be in order.

Signs your ducts might need attention:

1. Visible dust buildup around vents
2. Musty or dusty smell when the AC runs
3. Family members are getting sick more often indoors

5. Clean Your Home With Air Quality in Mind

Many common household cleaners contain VOCs (volatile organic compounds) that pollute your indoor air, especially in enclosed summer spaces.

Pro tip: Look for fragrance-free, plant-based cleaning products and avoid aerosol sprays.

Also, vacuum regularly using a vacuum with a HEPA filter and dust with a damp cloth to reduce particle buildup.

Summer Is for Comfort, Not Coughing

If you’ve been sneezing more, waking up with a sore throat, or feeling stuffy when the AC runs, it’s time to take a closer look at your indoor air quality.

At First String Heating and Air, we offer solutions that go beyond cooling. From upgraded filters and air purifiers to duct cleaning and humidity control, we can help your home feel fresher, healthier, and more comfortable every day of the summer.

Schedule an Indoor Air Quality Assessment Today

Want to know what’s really in the air you’re breathing? Call First String Heating and Air today to schedule an in-home consultation.

We’ll assess your air quality and recommend solutions that fit your family, your home, and your budget.

Breathe easier. Live better. We’ll help you get there.