When temperatures drop, many of us rely on our heating, ventilation and air conditioning systems (HVACs) to stay comfortable. While your HVAC system keeps you cozy, it may also be impacting your allergies. Indoor air quality is a major factor in allergy symptoms, especially during the winter months, and your HVAC system plays a key role in circulating air—and allergens—throughout your home. Here’s how your HVAC system could be affecting your allergies and what you can do to reduce the impact.
The Allergy-HVAC Connection
Your HVAC system does more than heat or cool your home; it also filters and circulates air. If the system isn’t properly maintained, it can inadvertently spread common indoor allergens like dust mites, mold spores, pet dander and pollen throughout your space.
- Dust Buildup in Ducts: Dust can accumulate in your air ducts, especially if they haven’t been cleaned in a while. When the heat kicks on, these particles are pushed into your living areas, triggering allergy symptoms.
- Mold Growth in the System: The combination of moisture and warmth inside your HVAC system creates the perfect environment for mold to grow. Mold spores can easily travel through the air, causing respiratory irritation.
- Recycled Pollutants: Without proper ventilation or filtration, your HVAC can circulate indoor pollutants like pet dander, cigarette smoke and chemical irritants, making allergy symptoms worse.
Signs Your HVAC Might Be Aggravating Allergies
- Increased sneezing, coughing or congestion when the system is running.
- Itchy, watery eyes or a scratchy throat after spending time indoors.
- A musty smell or visible signs of mold near vents or ducts.
- Noticeable dust buildup around air registers.
How to Minimize Allergies from HVAC Systems
1. Replace Filters Regularly
Air filters are your first line of defense against allergens. Choose high-efficiency particulate air (HEPA) filters or filters with a MERV (Minimum Efficiency Reporting Value) rating of 8 or higher for the best results. Replace them every 1-3 months, or more frequently if you have pets or severe allergies.
2. Schedule Duct Cleaning
Over time, dust and debris accumulate in your air ducts, contributing to poor indoor air quality. Professional duct cleaning can remove allergens and improve airflow.
3. Control Humidity Levels
Your HVAC system can impact humidity levels in your home. Use a dehumidifier in the winter to keep levels between 30-50% to prevent mold and dust mite growth.
4. Keep Vents Clean
Dust and allergens can settle on and around air vents. Wipe vents regularly with a damp cloth and vacuum nearby areas to minimize buildup.
5. Invest in an Air Purifier
Pairing your HVAC with a standalone air purifier can help trap allergens and keep the air in your home cleaner. Look for purifiers with HEPA filters for maximum effectiveness.
Upgrade Your HVAC System for Better Air Quality
Older HVAC systems may not filter air as effectively as newer models. If your system is outdated, consider upgrading to one with built-in air purification technology. Zoned systems, which allow for temperature control in specific areas, can also help reduce the spread of allergens.
When to Call Allergy & ENT Associates
If your allergy symptoms persist despite maintaining your HVAC system, it might be time to consult with one of our board-certified physicians.
Our team of experts can identify specific triggers and recommend treatments to help you manage your symptoms all year long!
Call us today!
