The best ways to improve indoor air quality are increasing fresh-air ventilation, upgrading to a higher-MERV filter (or whole-house air purifier), controlling humidity with a dehumidifier or humidifier as the season demands, having ducts cleaned if visibly dirty, and sealing duct leaks that pull dust into the system.
High-impact upgrades
- Whole-house air purifier on the return ductwork
- UV air filters to neutralize coil mold and bacteria
- Whole-home dehumidifier (summer) or humidifier (winter)
- Air duct cleaning for visibly dirty or musty ducts
- Aeroseal duct sealing to stop leaks pulling in attic and crawlspace air
- Whole-home ventilation with an ERV or HRV
Start with an indoor air quality test to see what’s actually in your air, then layer the right upgrades. See full options on our indoor air quality page.
