How to remove mold and mildew from ducts

When you discover that your ducts are full of mold and mildew, go and get your cleaning tools and start removing the mildew formations.

Tools You’ll Need

  • Safety goggles
  • Sponge
  • Washcloth
  • Scrub brush
  • Water
  • Bleach
  • Empty spray bottle
  • Rubber gloves
  • Breathing mask
  • White wine vinegar
  • Warm water
  • Commercial mold and mildew cleaner
  • Expendable clothing

Safety measures

When you’ll be cleaning the mildew deposits, you’ll be exposed to different toxic fumes from the commercial cleaning products. Always wear a breathing mask and rubber gloves.

This will protect you from respiratory problems and also burns and infections on skin. You will be working with bleach and this is very harmful to your skin.


If the mildew and mold deposits are not very serious, then you can try using some light commercial cleaners, or try a natural solution – mix some water and white vinegar, one part vinegar, 2 parts water. Mix them well.

Whatever is the cleaning product of your choice, apply it to the affected areas and let it sit for about 15 minutes. If you’re working with bleach, make sure that the room is properly ventilated.

Now it’s time to remove the mildew. Use a sponge or a scrubbing brush to wipe the pipes. If the mildew is stubborn then use a hard scrubbing brush and this will surely remove the deposits.


Clean the pipes with some clean water and then dry them with a washcloth. Drying is very important as moisture is the main cause for mildew formation.

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