If spring and fall leave you sneezing, congested, or with watery eyes—even indoors—you’re not alone. Allergies don’t stop at the door, and for many homeowners, indoor air can actually be more polluted than what’s outside. But the good news is, with a few smart changes and the right HVAC solutions, you can dramatically reduce allergens in your home.
At Marsh Heating & Air Conditioning, we understand the challenges Minnesota families face when it comes to indoor air quality. With over 50 years of experience serving local homeowners, we know how to help you breathe easier—season after season.
Why Indoor Allergies Are So Common
Allergens like pollen, dust mites, pet dander, mold spores, and volatile organic compounds (VOCs) can accumulate indoors—especially in tightly sealed homes designed for energy efficiency. While that efficiency helps with heating and cooling costs, it also means airborne irritants get trapped inside, circulating through your HVAC system.
If your HVAC system isn’t optimized to filter, clean, and properly circulate air, those allergens keep coming back—leading to symptoms like:
- Nasal congestion
- Itchy or watery eyes
- Coughing and wheezing
- Headaches and fatigue
Top Ways to Allergy-Proof Your Home
- Change Your HVAC Filters Regularly
A clean filter is your first line of defense. Standard filters should be replaced every 1–3 months, but allergy sufferers should consider upgrading to high-efficiency pleated filters (MERV 11–13) or even HEPA filters if your system allows it.
- Invest in Whole-Home Air Purification
Portable purifiers help in single rooms, but whole-home systems are more effective for consistent, house-wide protection. The Lennox PureAir™ Air Purification System removes over 99% of airborne particles, including pollen, mold spores, dust, pet dander, and even airborne viruses and bacteria.
This system:
- Works silently with your HVAC system
- Breaks down odors and VOCs
- Requires minimal maintenance
It’s one of the most comprehensive air purification solutions available—and we install them right here at Marsh Heating.
- Control Indoor Humidity
Dust mites and mold thrive in high humidity, while dry air can irritate sinuses. Maintaining your home’s humidity between 30% and 50% helps reduce allergens and supports respiratory health.
Lennox Healthy Climate® humidifiers and dehumidifiers work in tandem with your HVAC system to automatically balance humidity levels based on your needs and the season.
- Clean Your Ducts (When Necessary)
Over time, ducts can accumulate dust, debris, and allergens. While not every home needs duct cleaning regularly, if your system hasn’t been checked in years—or if you’ve recently renovated—it’s a good idea to have a professional inspection.
- Keep Up with Maintenance
An unmaintained HVAC system can become a breeding ground for bacteria and mold. Schedule annual maintenance with Marsh Heating to ensure your system is clean, efficient, and working in your favor—not against it.
Simple Daily Habits That Help
In addition to optimizing your HVAC system, small lifestyle changes can help reduce allergy symptoms:
- Remove shoes at the door to keep outdoor allergens out
- Wash bedding weekly in hot water
- Use an allergen-proof mattress cover
- Bathe pets regularly to reduce dander
- Vacuum often with a HEPA-filter vacuum
- Wipe down hard surfaces to remove dust and pollen
Allergy Relief Starts with Better Air—And the Right Partner
When it comes to reducing indoor allergens, your HVAC system plays a major role—but it takes more than just changing your filter. From installing air purification and humidity control systems to performing regular maintenance, Marsh Heating & Air Conditioning is here to help you create a cleaner, healthier home.
We are proud to be a locally owned company serving Minnesota families for over five decades. As a trusted Lennox dealer, we provide access to industry-leading indoor air quality products that make a real difference.
📞 Contact Marsh Heating & Air Conditioning today to schedule an indoor air quality consultation and breathe easier all year long.