How to Eliminate Musty Odors from Your Home

Remove musty smells by identifying and eliminating moisture sources, improving ventilation, cleaning affected areas with vinegar or baking soda, and using dehumidifiers to maintain proper humidity levels.

  1. Find the Hidden Moisture. Walk through your home and identify areas with musty odors. Check basements, crawl spaces, bathrooms, laundry rooms, and areas around windows. Look for visible signs of moisture like water stains, condensation, or mold growth. Pay attention to carpets, upholstery, and stored items that might be damp.
  2. Stop Moisture at the Source. Address any plumbing leaks, roof leaks, or foundation issues immediately. Seal cracks in basement walls, repair damaged caulking around tubs and showers, and ensure gutters drain properly away from your foundation. These fixes prevent new moisture from creating ongoing odor problems.
  3. Get Air Moving Fast. Open windows when weather permits to create cross-ventilation. Install or upgrade exhaust fans in bathrooms and kitchens. Run ceiling fans to circulate air throughout the house. Consider adding ventilation to basements, attics, and crawl spaces where air tends to stagnate.
  4. Scrub Out the Smell. Mix equal parts white vinegar and water in a spray bottle. Spray hard surfaces like walls, floors, and furniture, then wipe clean. For carpets and upholstery, sprinkle baking soda liberally, let sit overnight, then vacuum thoroughly. Wash any removable fabric items in hot water with an extra rinse cycle.
  5. Control the Humidity. Place dehumidifiers in problem areas, especially basements and other damp spaces. Maintain indoor humidity between 30-50 percent. Empty water tanks regularly and clean the unit according to manufacturer instructions to prevent mold growth inside the dehumidifier itself.
  6. Absorb What Remains. Place bowls of activated charcoal, baking soda, or coffee grounds in affected areas to absorb remaining odors. Replace these materials every few weeks until the smell disappears completely. For enclosed spaces like closets, hang moisture absorber packets designed for long-term use.
  7. Purify Your Air System. Change your furnace and air conditioning filters, as dirty filters can circulate musty odors throughout your home. Consider upgrading to HEPA filters for better air quality. Have your ductwork professionally cleaned if the musty smell persists after other treatments.