Home Indoor Air Quality Checklist

Install carbon monoxide (CO) detectors near sleeping areas on each floor

Mount at eye level per manufacturer; place outside bedrooms and near fuel-burning appliances.

Test CO detectors and replace batteries or expired units

Press the test button monthly; replace batteries yearly or when unit signals low battery.

Place a radon test kit in the lowest lived-in level or install a radon monitor

Follow kit instructions and timing; mitigate if levels exceed local action guidelines.

Set HVAC filter replacement schedule

Plan replacements based on filter type, pet presence, and allergies.

Check current HVAC filter type and MERV rating

Write down exact filter size and MERV to buy correct replacements.

Keep replacement filters on hand and mark replacement intervals

Aim for 1–3 month swaps; increase frequency with pets or allergies.

Choose an air purifier with a true HEPA filter plus activated carbon

HEPA removes particles; carbon adsorbs odors and many VOCs.

Match purifier CADR and coverage to the room size

Check the manufacturer's recommended square footage before buying.

Place purifier near pollutant sources and avoid obstructions

Keep off the floor and away from curtains or furniture blocking airflow.

Open windows to create a cross-breeze for 10–30 minutes daily when outdoor AQI is good

Check local air quality and pollen levels before ventilating.

Run bathroom and kitchen exhaust fans during and 10–20 minutes after use

Helps remove moisture, cooking particles, and fumes at the source.

Replace high-VOC products with low-VOC alternatives (paints, cleaners, air fresheners)

Check labels for 'low-VOC' or 'VOC-free' when shopping.

Store paints, solvents, and cleaners in sealed containers in a ventilated area

Keep lids tight and store away from living spaces and heat sources.

Control indoor humidity at 30–50% using a dehumidifier or humidifier

Measure with a hygrometer and adjust seasonally to prevent mold and dust mites.

Inspect and repair roof, plumbing, and window leaks to prevent mold

Fix visible water sources promptly to stop mold growth.

Clean small mold patches with detergent and dry thoroughly; hire a pro for >10 sq ft

Wear gloves and an N95; call a specialist for large or recurring infestations.

Vacuum floors and upholstery weekly using a HEPA-filter vacuum

Work top-to-bottom and include baseboards and under furniture.

Wash bedding and curtains every 1–2 weeks to reduce allergens

Use hot water when fabrics allow; consider allergen-proof covers.

Add one or two low-maintenance air-cleaning houseplants to living areas

Try pothos, spider plant, or snake plant; plants supplement but don't replace filtration.

Ban indoor smoking and avoid incense or open burning; ventilate if needed

Smoking indoors greatly increases pollutants; designate outdoor areas only.