How to Remove Rust From Heat Registers

How to Remove Rust From Heat Registers
Published: Nov 11, 2009
Updated: Nov 20, 2021
2 minute read

Several household basic supplies will suffice for this job, so choose one based on what you have on hand. Start by removing the heat register. Put on a face mask to protect yourself against airborne rust particles. You're ready to put some teeth into this cleaning job using one of these methods.

Things You Will Need

  • Screwdriver
  • Rag or paper towel
  • Face mask
  • Baking soda
  • Bowl
  • Toothbrush
  • Towel
  • Salt
  • Lime juice
  • White vinegar
  • Spray bottle
  • Steel wool or fine-grit sandpaper
  1. Pour some baking soda into a bowl. Sprinkle it with some water and stir until the mixture forms a paste. Rub the paste on the heat register with the old toothbrush. Assess your progress periodically by rinsing the register. Apply more paste and scrub as necessary.

  2. Place the heat register on an old towel. Sprinkle some salt over the rust stain, then drizzle some lime juice over the salt. Let the salty mixture sit on the stains for about three hours before scrubbing away the rust stains with the old toothbrush.

  3. Try white vinegar to remove rust in one of three ways: Spray the rust with a half-and-half solution of white vinegar and water, make a paste with white vinegar and salt, or soak badly rusted heat registers in straight white vinegar overnight. Scrub the rust away with the toothbrush.

  4. Choose steel wool or a fine-grit sandpaper as a last resort to remove rust from a heat register. Sand the rust in the direction of the grain to reduce the chance of making scratches on the register.

The Drip Cap

  • Your old toothbrush is the perfect scrubbing tool for removing rust from your metal heat registers.
  • Put on a face mask to protect yourself against airborne rust particles.
  • Rub the paste on the heat register with the old toothbrush.
  • Try white vinegar to remove rust in one of three ways: Spray the rust with a half-and-half solution of white vinegar and water, make a paste with white vinegar and salt, or soak badly rusted heat registers in straight white vinegar overnight.

Photo Credits

Abigail210986/iStock/Getty Images

Abigail210986/iStock/Getty Images

M.T. Wroblewski

With education, health care and small business marketing as her core interests, M.T. Wroblewski has penned pieces for Woman's Day, Family Circle, Ladies Home Journal and many newspapers and magazines. She holds a master's degree in…

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