How to Improve Indoor Air Quality at Home in 2022 (Full Guide) 2.1 1. Regularly Change Your Air Filters. 2.2 2. Ventilate Your Space. 2.3 3. Decorate With Indoor Plants. 2.4 4. Seal Your Home. 2.5 5. Check Your Radon Levels. 2.6 6. Keep Up With a Regular Cleaning Routine. 2.7 7. Use Natural Cleaning Products. 2.8 8. More items...