10 Ways to Improve Your Home's Indoor Air Quality

Indoor air quality plays a critical role in your comfort, health, and overall well-being. From allergens and pet dander to volatile organic compounds (VOCs) and moisture-related mold, there are countless invisible pollutants that could be affecting the air you breathe at home. With Americans spending about 90% of their time indoors, according to the Environmental Protection Agency (EPA), knowing how to clean up your indoor air has never been more important.

This guide explores the most effective strategies for improving your indoor air quality, whether you're dealing with seasonal allergies, asthma, or simply want to create a fresher, healthier living environment. We’ll also discuss how HVAC professionals like Professional Mechanical Services can support long-term indoor air quality improvements with specialized solutions.

1. Keep Your Home Clean and Clutter-Free

The foundation of good indoor air quality is cleanliness. Dust, pet hair, mold spores, and pollen often settle on soft furnishings, floors, and surfaces. Vacuuming regularly with a HEPA-filter vacuum, washing bedding and drapes weekly, and decluttering high-traffic areas can help reduce particle buildup in your home. If you live with pets, grooming them and cleaning their bedding frequently will also minimize airborne dander.

2. Improve Ventilation and Air Circulation

Many modern homes are tightly sealed to conserve energy, which can unfortunately trap pollutants indoors. Make sure your home has adequate ventilation, especially in areas like bathrooms, kitchens, and laundry rooms. Using exhaust fans and opening windows periodically can help refresh stale indoor air. In homes with poor natural airflow, mechanical ventilation systems such as energy recovery ventilators (ERVs) can exchange indoor air with filtered outdoor air without wasting energy.

3. Control Humidity Levels

Maintaining the right humidity level—between 30% and 50%—is essential for air quality. High humidity encourages mold growth and dust mites, while low humidity can cause respiratory discomfort and dry skin. Use dehumidifiers in damp areas like basements, and consider installing a whole-home humidification system during dry winter months. HVAC experts like Professional Mechanical Services can recommend and install humidity control systems that integrate with your existing HVAC setup for year-round balance.

4. Change HVAC Filters Regularly

One of the easiest and most effective ways to improve your home’s air is by changing your HVAC filters on time. Filters trap dust, allergens, and other airborne particles, preventing them from recirculating through your ducts. If you have pets or allergies, consider upgrading to high-efficiency filters with a MERV rating of 11 or higher. Professional Mechanical Services offers guidance on choosing the right filter and can set up a maintenance schedule to ensure consistent airflow and filtration.

5. Reduce Sources of Indoor Pollution

Some pollutants come from within the home itself. Common culprits include harsh cleaning products, paints, adhesives, and certain furniture materials that release VOCs. Choose low-VOC or natural alternatives whenever possible. Smoking indoors, burning candles frequently, or using certain air fresheners can also degrade indoor air quality. Limiting these activities and opting for natural ventilation and scent-free products can significantly improve your home's air.

6. Use Air Purifiers for Extra Protection

Air purifiers with HEPA filters can provide added protection against airborne pollutants, especially in bedrooms, nurseries, or living areas where family members spend the most time. Some models also use activated carbon to absorb odors and VOCs. Whole-home purification systems, which can be installed by HVAC contractors like Professional Mechanical Services, provide more comprehensive filtration and are ideal for larger homes or families with multiple sensitivities.

7. Consider Duct Cleaning and Sealing

Your HVAC ductwork plays a major role in distributing air throughout the home. Over time, ducts can collect dust, debris, and even mold, especially if there are leaks or moisture issues. Duct cleaning services can remove built-up contaminants, while duct sealing ensures your HVAC system is operating efficiently without circulating unfiltered air. If you’ve never had your ducts inspected, scheduling an evaluation with an HVAC specialist may reveal opportunities to improve both air quality and energy efficiency.

8. Monitor Air Quality with Smart Technology

Modern indoor air quality monitors can measure levels of pollutants such as particulate matter (PM2.5), VOCs, carbon dioxide, and humidity. These devices provide real-time feedback and often connect with smartphones, allowing you to track air quality trends and respond quickly to issues. Some HVAC systems can be integrated with smart sensors that automatically adjust filtration or ventilation based on detected air quality, creating a more responsive and healthier indoor environment.

9. Address Mold and Mildew Promptly

Mold spores are a serious concern for indoor air quality and can trigger respiratory issues and allergic reactions. Areas with poor ventilation or frequent moisture—such as bathrooms, basements, and around HVAC units—are particularly vulnerable. Always fix leaks promptly, use bathroom fans, and clean up any mold with appropriate cleaners. If the issue is widespread, you may need professional remediation, especially if mold has entered your ductwork or insulation.

10. Maintain and Upgrade Your HVAC System

Routine HVAC maintenance is key to clean, efficient air distribution. Scheduling seasonal tune-ups ensures all components are functioning properly and allows your contractor to catch any issues before they escalate. If your system is more than 10–15 years old, you may also consider upgrading to a newer, more efficient system that includes advanced filtration and humidity control options. Professional Mechanical Services offers air quality assessments and can help determine whether your current system is meeting your indoor air quality goals.

Improving indoor air quality isn’t a one-time task—it’s an ongoing effort that includes regular cleaning, equipment upkeep, and lifestyle habits. By taking a multi-layered approach, you can create a healthier, more comfortable environment for your family year-round.

If you’re ready to take the next step toward cleaner air, Professional Mechanical Services offers expert HVAC solutions designed to improve indoor air quality throughout your home. From filter replacements and air purifiers to duct sealing and humidity control systems, our team is here to support your long-term comfort and health. Be sure to reach out to our team today to learn more about our services and team. We look forward to working with you soon!