We spend most of our time indoors, so the air inside our homes matters. Dust, pet dander, pollen, and humidity problems can all build up without you noticing.

The steps below range from free habits to professional upgrades. Start with the easy ones and add more only if you need them.

Key Takeaways

• Regular filter changes are the simplest way to keep air cleaner.

• Keeping humidity between 30% and 50% helps prevent mold and dryness.

• Good ventilation removes stale air and everyday pollutants.

• Professional duct cleaning and purifiers can help when basic steps are not enough.

Easy improvements to start with

Change your air filter on schedule

A clean filter traps dust and allergens before they circulate through your home. If anyone has allergies, consider a higher-rated filter that your system can handle.

Control humidity

Air that is too damp encourages mold, and air that is too dry irritates skin and airways. A hygrometer is an inexpensive way to check, and a humidifier or dehumidifier can correct it.

Ventilate and clean

Use exhaust fans while cooking and bathing, open windows when outdoor air is fresh, and vacuum with a sealed or HEPA-filter vacuum to keep dust down.

When to call a technician

Some air problems need professional testing. Call us if:

• Family members have allergy or asthma symptoms that improve when they leave home.

• You see or smell mold or mildew.

• Dust returns quickly after cleaning.

• Your ducts have not been cleaned in over five years, or after a renovation.