Why Indoor Air Quality Often Declines During the Winter

December 17, 2025

Winter is a season when homes are sealed tightly to keep warm air inside and heating costs under control. While this approach improves comfort and efficiency, it can also create indoor air quality challenges that are easy to overlook. With windows closed, ventilation reduced, and heating systems running more frequently, airborne pollutants and moisture can become trapped inside the home. Understanding why indoor air quality often declines during the winter helps homeowners make smarter decisions about airflow, ventilation, and HVAC performance. Addressing these issues can lead to a healthier, more comfortable indoor environment throughout the colder months. Homes Become More Airtight in Cold Weather As temperatures drop, homeowners naturally focus on preventing heat loss. Weather-stripping, insulation upgrades, and sealed windows all play a role in improving energy efficiency. While these steps are beneficial, they also reduce the amount of fresh air entering the home. When a house becomes too airtight, stale indoor air has fewer opportunities to escape. Pollutants generated by everyday activities remain indoors longer, and odors may linger instead of dissipating. Over time, the lack of fresh air exchange can negatively affect overall indoor air quality. This issue is especially noticeable in newer homes or recently renovated properties...

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Top Tips for Better Indoor Air Quality During the Winter

December 11, 2025

Wintertime is an excellent time to relax indoors and spend time with family. But you must also stay aware of certain indoor allergens that can trigger uncomfortable symptoms. Dust Mites Dust mites, despite being incredibly small, are huge hazards for your health and comfort. They love living in warm, humid indoor environments. And with your heater running all winter, this gives them the perfect breeding environment. You may notice an increase in certain symptoms, including sneezing and congestion, when the dust mites accumulate in your carpet and bedding. Pet Dander Pets often spend more time indoors during the winter. This means there is more pet dander floating around the home. Breathing in pet dander may cause symptoms like sneezing or watery eyes. If you’re allergic to the proteins in the dander, it can irritate your skin and throat. The more the pet dander gathers and settles, the harder it is to remove it. Indoor Mold Spores If your home has poorly ventilated areas, there’s a higher risk of mold growth in those spots. And with winter weather often causing condensation on windows, the poorly ventilated spots become even more vulnerable to moisture buildup. When spending time in areas that have...

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