How to Get Rid of Mold in Your HVAC Ducts and Ceilings (And Keep It Gone!)

March 31, 2025

Steps to eliminate mold in your HVAC ducts and ceilings for a healthier home!

Close-up of ceiling HVAC units with metal ducts and vents

Struggling with stubborn mold in your HVAC system or spotting it on your ceilings? Yikes, that's the last thing anyone wants at home! It's not just ugly to look at—it can seriously mess with your health, triggering allergies, making it harder to breathe, and even leading to long-term damage to your house if left unchecked. And let's be honest, in Grand Rapids, with our humid summers and unpredictable weather, mold can sneak up on you faster than you'd like.


But don't stress! You can take care of it. You're about to get a step-by-step guide to removing mold from your HVAC ducts and ceilings so you can breathe easily (literally). Let's dive in!


1. Spotting Mold in Your HVAC and Ceilings

Before tackling mold, you need to confirm it’s really there. Watch for these signs:


  • (Not the fresh, clean air you want!)  The musty odor intensifies every time the HVAC kicks on.
  • Visible mold near vents, ducts, or spots on the ceiling. 
  • Allergy symptoms include sneezing, coughing, and itchy eyes. If these flare up when your HVAC is on, mold spores might be floating around. 


If any of these sound familiar, it's time to take action. But don't worry, we've got you covered!


2. Gather Your Cleaning Gear

First things first—prep like a pro! Make sure you’re fully prepared to tackle mold the right way. Here’s what you’ll need:


  • Gear up for safety: Grab some gloves, a mask, and goggles—you definitely don’t want those pesky spores getting anywhere near you!
  • HEPA vacuum and an air purifier to handle any airborne spores. 
  • Mold-killing solutions: You've got options like vinegar, hydrogen peroxide, or commercial cleaners. 
  • Scrubbing tools: Soft-bristled brushes and microfiber cloths for gentle cleaning. 


With the right tools in hand, you’ll be ready to say goodbye to mold for good.


3. Give Your HVAC a Break

Before you start cleaning, don’t forget to switch off your HVAC system to keep things safe and hassle-free. You don't want to spread mold spores around your house while cleaning. Also, take a good look at the affected areas in your ducts and ceiling so you can clean them properly without interference.


4. How to Clean Moldy HVAC Ducts

Cleaning mold out of your HVAC ducts might sound like a big job, but trust us, it's doable. Here's how:


  1. Remove the vent covers and wash them well with warm, soapy water. 
  2. Vacuum the ducts with a HEPA vacuum. This will suck up the loose mold and debris (and trap those teeny spores that you can't see). 
  3. Spray your mold-killing solution inside the ducts. You can use a sprayer or fogger to apply it evenly. 
  4. Wipe down the surfaces inside with a damp microfiber cloth, then let everything dry out completely. 


Mold loves moisture, so ensure your ducts are dry before turning the HVAC system back on. You don't want to invite it back!


5. Tackling Mold on Ceilings

Mold on the ceiling can ruin a room's vibe, so let's take care of it:


  1. Scrape off the visible mold with a putty knife or scraper. 
  2. Apply your mold-killing solution and let it sit for 15–20 minutes. This helps break down the mold. 
  3. Give it a gentle scrub with a soft brush, rinse thoroughly with clean water, and leave it out to air dry.
  4. Apply a fresh coat of mold-resistant paint to keep mold from coming back in the future.


Your ceiling will thank you for the TLC!


6. Tips to Stop Mold for Good

Getting rid of mold is great, but the real win is stopping it before it starts. Here’s how to keep your home fresh and mold-free:


  • Improve ventilation in bathrooms and kitchens (fans and dehumidifiers work wonders!). 
  • Change your HVAC filters regularly and clean your ducts professionally to keep the airflow fresh. 
  • Fix any leaks right away. Mold loves moisture, so eliminating leaks is essential to keep it away. 


With these little tweaks, you'll make mold think twice about showing up again.


7. When to Call in the Pros

If you've done everything and mold keeps coming back, or it's starting to spread deep into your ducts or ceilings, it might be time to call in the experts. Here's when you might want professional help:


  • If mold won't go away, no matter how many times you clean. 
  • If the mold has spread deep within the ducts or ceiling structures. 
  • If your family is struggling with persistent health issues like allergies or asthma that always seem to flare up when you're at home.


Professionals can tackle the issue head-on and ensure it's gone for good.


Say Goodbye to Mold for Good!

Eliminating mold from your air ducts and ceilings isn’t just about maintaining a tidy home—it’s about safeguarding your family’s health and creating a safe living environment. With the right steps, you can kick that mold out for good and keep it from coming back.


Need a hand in Grand Rapids? Grand Rapids Duct Cleaners has your back! From tackling mold to keeping your home fresh and clean, we’re all about making your space healthier. Ready to breathe easier? Give us a call today, and let’s get your home in tip-top shape!

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