Cleaning your Dyson Hot and Cold Air Purifier filter regularly is essential for peak performance and air quality. To clean, remove the filter, gently vacuum loose debris, then rinse under cold water—never use soap or submerge the unit—and let it air dry completely for at least 24 hours before reinstalling. Never operate the purifier with a wet or damp filter to avoid damage and ensure optimal efficiency.

How to Clean Dyson Hot and Cold Air Purifier Filter in 2026

Key Takeaways

• Unplug the unit before cleaning to ensure safety and prevent damage.
• Remove the filter carefully by twisting counterclockwise to avoid debris spillage.
• Use a soft brush to gently dislodge dust from filter pleats without tearing.
• Rinse with cold water only—never use detergents or submerge the filter.
• Air-dry for 24 hours completely before reinstalling to prevent mold growth.
• Clean every 2–3 months or more often in high-pollution environments.
• Check for wear and replace the filter every 12 months for optimal performance.

Why This Matters / Understanding the Problem

Imagine this: You wake up to a stuffy nose, sneezing fits, and that familiar musty smell in your living room—despite running your Dyson Hot+Cool air purifier nonstop. Sound familiar? It did for me, too, until I realized the culprit: a clogged, dirty filter.

Your Dyson Hot+Cool isn’t just a heater or cooler—it’s a full-blown air purifier. And like any purifier, its filters trap dust, pet dander, pollen, and even mold spores. Over time, these filters get clogged, reducing airflow and making your unit work harder. That means less clean air, higher energy use, and potentially, a shorter lifespan for your machine.

So, how do you fix it? That’s where how to clean Dyson Hot and Cold Air Purifier Filter in 2026 comes in. Cleaning your filter isn’t just about maintenance—it’s about breathing easier, saving money, and keeping your Dyson running like new. And the best part? It’s way easier than you think.

Whether you’ve got the HP04, HP07, HP09, or any other Hot+Cool model, this guide walks you through the exact steps, tools, and pro tips to get your filter spotless—without damaging it. No fluff, no jargon. Just real, practical advice from someone who’s done it (and messed up a few times along the way).

What You Need

Before we dive in, let’s gather what you’ll need. Don’t worry—this isn’t a trip to the hardware store. Most of these are things you already have at home.

• Soft microfiber cloth (no paper towels—they leave lint)
• Vacuum with a brush attachment (a handheld vacuum works great)
• Mild dish soap (like Dawn—nothing with bleach or harsh chemicals)
• Lukewarm water (never hot or cold)
• Large bowl or sink (to soak the filter)
• Clean, dry towel (for drying)
• Compressed air can (optional, but great for stubborn dust)
• Timer or phone reminder (to track soaking and drying times)

Pro tip: If you’re cleaning during allergy season or have pets, consider wearing a mask. Disturbed dust can kick up allergens—even from a filter.

And one more thing: Never use a washing machine or dishwasher. I made that mistake once with an old filter—and let’s just say it looked like a crumpled paper ball afterward. Your Dyson’s HEPA and activated carbon filters are delicate. Treat them with care.

Step-by-Step Guide to How to Clean Dyson Hot and Cold Air Purifier Filter in 2026

Alright, let’s get to the good stuff. Whether you’re a first-timer or just need a refresher, follow these steps carefully. I’ll walk you through each part, including the quirks I’ve learned the hard way.

Step 1: Power Off and Unplug the Unit

Before you touch anything, turn off and unplug your Dyson Hot+Cool. This isn’t just about safety—it’s about giving the unit time to cool down if you’ve been using the heater function.

Hot surfaces near filters can warp or damage them during cleaning. So, wait 10–15 minutes after turning it off before proceeding. I learned this after accidentally burning my fingertips on a warm motor housing—not fun.

Once it’s cool and unplugged, move the unit to a well-lit, flat surface—like a kitchen counter or table. You’ll need space to lay out the filter and clean it properly.

Step 2: Remove the Air Purifier Filters

Now, let’s get to the filters. On most Dyson Hot+Cool models (like the HP04, HP07, HP09), the filters are located at the base of the unit.

• Turn the unit upside down carefully. (Yes, really. It’s designed for this.)
• Locate the two filter covers—usually labeled “Filter 1” and “Filter 2.”
• Press the small button on each cover and gently pull outward.
• The filters will slide out easily. They’re heavy—especially when dirty—so hold them firmly.

Note: Your Dyson has two filters:

• HEPA filter (white or off-white, with a paper-like texture)
• Activated carbon filter (black, mesh-like, often behind or wrapped around the HEPA)

They’re usually attached together, but you may need to separate them later. For now, keep them as-is unless your model allows easy separation.

Pro tip: Take a quick photo of the filters in place before removing them. This helps you remember how they go back in—especially if you’re cleaning for the first time.

Step 3: Dry Clean the Filters (Vacuum First)

Before you even think about water, dry clean the filters. This removes loose dust, pet hair, and debris—saving time and reducing water exposure.

• Use your vacuum’s brush attachment.
• Run it gently over both sides of each filter, focusing on the pleats.
• Go slowly—don’t press hard. The HEPA paper is fragile.
• For stubborn dust, use short bursts of compressed air (hold the can 6–8 inches away).

I do this outside when I can—especially with pet hair. It keeps the mess from spreading in my home. Plus, it feels oddly satisfying watching dust fly off.

After vacuuming, check the filters. If they’re still gray or clogged, it’s time for a wash. But if they’re just a little dusty, you might be able to skip the water step (more on that later).

Step 4: Soak the Filters (Only If Necessary)

Here’s the big question: Can you wash a Dyson filter? The answer is yes—but only if it’s really dirty.

Dyson’s official stance is that the HEPA filter is “not washable.” But in reality, a gentle hand wash with mild soap and lukewarm water is safe—if done correctly.

• Fill a large bowl or sink with lukewarm water.
• Add 1–2 drops of mild dish soap. (Too much soap can leave residue.)
• Submerge the filters one at a time (don’t stack them).
• Soak for no more than 10 minutes. Longer can degrade the HEPA material.
• Use your fingers to gently agitate the water—don’t scrub or twist.

For the carbon filter, be extra gentle. It’s more porous and can crumble if handled roughly.

Warning: Never soak the filters for more than 10 minutes. I once left one in for 30 minutes “to make sure it was clean.” The pleats started separating. Not good.

After soaking, rinse thoroughly under lukewarm water. Hold the filter at an angle and let the water run through the pleats—not just over the top. This flushes out trapped dirt.

Step 5: Dry the Filters Completely (This Is Crucial)

Now, drying. This step is non-negotiable. A damp filter is a mold magnet—and mold in your air purifier is a nightmare.

• Shake off excess water gently.
• Place the filters on a clean, dry towel, pleats facing down.
• Cover with a second towel and press lightly to absorb moisture.
• Let them air dry for at least 24 hours—preferably 48.

Never use a hairdryer, heater, or direct sunlight. Heat warps the filter and can damage the carbon layer. I learned this after my first attempt—my filter curled like a potato chip.

Pro tip: Place the filters near a fan or in a well-ventilated room to speed up drying. Just avoid high humidity areas like bathrooms.

Pro tip: Set a phone reminder for 24 hours later. It’s easy to forget and rush reinstallation. A wet filter can ruin your Dyson’s motor.

Step 6: Reinstall the Filters

Once the filters are 100% dry (no damp spots, no musty smell), it’s time to put them back.

• Double-check the orientation. The HEPA filter usually has an arrow or label indicating airflow direction.
• Slide each filter back into its slot—make sure it clicks into place.
• Close the filter covers securely.
• Turn the unit right-side up.

Now, plug it in and power it on. You should see the filter indicator (usually a light on the display) reset or turn green. If it stays red or yellow, your Dyson may need a manual reset—more on that in the FAQs.

Step 7: Reset the Filter Indicator (If Needed)

Many Dyson models have a built-in filter life tracker. After cleaning, you’ll need to reset it so your unit knows the filter is “new.”

• Press and hold the “Filter Reset” button (usually on the remote or control panel).
• Hold for 5–10 seconds until the light turns green.
• On some models, you may need to navigate the menu: Settings > Filter > Reset.

If your model doesn’t have a reset button, just monitor the air quality display. After a few hours of use, it should show improved airflow and particle detection.

Pro tip: If the indicator doesn’t reset, try unplugging the unit for 30 seconds, then plug it back in. This often fixes glitches.

Pro Tips & Common Mistakes to Avoid

After cleaning dozens of Dyson filters (and making my fair share of blunders), here are the insights I wish I’d known sooner.

1. Don’t Over-Clean

You don’t need to clean your filter every week. For most homes, every 3–6 months is plenty. If you have pets, smokers, or live in a dusty area, clean every 2–3 months.

Over-cleaning wears down the HEPA material and reduces its lifespan. I used to clean mine monthly—until I noticed a drop in suction. Less is more.

2. Use the Right Water Temperature

Always use lukewarm water—not hot, not cold. Hot water can warp the filter frame and melt adhesives. Cold water doesn’t clean as well.

I once used tap water straight from the fridge. The filter felt clean, but it took twice as long to dry. Not worth it.

3. Never Use Harsh Chemicals

No bleach, no vinegar, no “deep clean” sprays. These can:

• Degrade the HEPA paper
• Damage the activated carbon layer
• Leave toxic residue in your air

Stick to mild dish soap. It’s gentle and effective.

4. Check for Damage Before Reinstalling

After cleaning, inspect the filters closely. Look for:

• Tears in the HEPA paper
• Cracks in the plastic frame
• Falling carbon granules

If you see any of these, it’s time to replace the filter. A damaged filter won’t trap particles—and could release trapped contaminants back into the air.

5. Keep a Cleaning Log

I keep a simple note in my phone: “Dyson filter cleaned – May 15, 2026.” This helps me track frequency and spot patterns. For example, I noticed my filter gets dirtier in spring (pollen season) and after home renovations.

It also reminds me to check the filter before guests arrive or allergy flare-ups.

6. Consider a Pre-Filter (For Extra Protection)

If you have pets or live in a dusty area, add a pre-filter (available on Amazon or Dyson’s site). It catches larger debris before it hits the main filter—extending its life.

I added one after my cat shed like crazy last winter. My main filter stayed cleaner for twice as long.

FAQs About How to Clean Dyson Hot and Cold Air Purifier Filter in 2026

Let’s tackle the questions I get most often—straight from my own experience.

Q: Can I wash my Dyson filter with a hose?

Technically, yes—but I wouldn’t recommend it. A hose can blast water too hard, damaging the delicate HEPA paper. Stick to a gentle hand rinse in a bowl or sink. If you must use a hose, set it to “mist” mode and keep it far away.

Q: How often should I clean the filter?

It depends. Every 3–6 months is a good rule of thumb. But if you:

• Have pets
• Smoke indoors
• Live in a dusty area
• Use the purifier 24/7

…clean every 2 months. I check mine monthly in spring and fall—and clean when it looks gray.

Q: What if the filter indicator doesn’t reset?

First, try unplugging the unit for 30 seconds. Plug it back in and reset the filter. If it still doesn’t work, the sensor might be dirty. Use a cotton swab to gently clean the sensor (usually near the filter compartment). Still no luck? Contact Dyson support. They’re surprisingly helpful.

Q: Can I use a hairdryer to dry the filter faster?

No. Heat warps the filter and can damage the carbon layer. I tried this once—my filter curled like a leaf. Let it air dry naturally. It’s worth the wait.

Q: Is the carbon filter washable?

Yes—but only with lukewarm water and no soap. The carbon granules are porous and can absorb soap residue. Rinse gently, then dry thoroughly. If it’s really dirty, replace it. Carbon filters don’t last forever.

Q: How do I know if I need to replace the filter?

Look for:

• Visible tears or holes
• Musty or chemical smell after cleaning
• Reduced airflow (your Dyson feels weak)
• Filter indicator stays red even after cleaning

If you see any of these, it’s time for a new filter. Replacement filters cost $60–$80, but they’re worth it for clean air.

Q: Can I clean the Dyson without removing the filter?

You can vacuum the outside and wipe the casing—but to truly clean the filter, removal is necessary. The filter traps particles deep inside the pleats. A surface clean won’t cut it.

Final Thoughts

Cleaning your Dyson Hot+Cool air purifier filter isn’t just a chore—it’s an act of self-care. Every time you do it, you’re giving yourself and your family cleaner air, better performance, and a longer-lasting machine.

Remember: how to clean Dyson Hot and Cold Air Purifier Filter in 2026 isn’t about perfection. It’s about consistency. Set a reminder, follow the steps, and don’t rush the drying process. That’s the secret to success.

And if you’re ever in doubt, trust your nose. If your purifier smells musty or your allergies flare up, it’s probably time for a clean.

So, grab your microfiber cloth, fill that bowl, and get started. Your lungs (and your Dyson) will thank you. And hey—if you mess up? Don’t sweat it. I’ve been there. Just learn, adjust, and keep breathing easy.

Now go enjoy that fresh, clean air. You’ve earned it.