- Multifunctional. Intelligently purifies, cools and heats you.
- HEPA filter⁶ removes 99.97% of particles 0.3 microns⁷ in size. The purifier is fully…
- Automatically senses, captures and traps pollutants for cleaner air. Even detects and…
- Air Multiplier technology generates the circulation power to draw distant pollutants into…
After six months of testing this 3-in-1 appliance, I’m ready to share the real-world results. Does it live up to the hype? Let’s break it down.
This premium home solution combines heating, cooling, and purification—all in one sleek 30-inch unit. Unlike standard models, it tackles hot cool formaldehyde with a specialized filter. But is it worth the $800+ price tag?
I’ll cover everything from allergy relief to noise levels. Spoiler: the app functionality surprised me. If you’re considering a high-end product for cleaner air, this review is for you.
Stick around for lab-tested insights versus my personal experience. You’ll get honest answers before making a big investment.
Introduction: Why I Tested the Dyson HP09 Air Purifier
When my heating system gave out last winter, I never expected to find such a versatile solution. With temperatures dropping to 40°F, I relied on fireplaces—until I learned about the hidden risks. Combustible sources like wood release formaldehyde, a toxin that worsens allergies and air quality.
As a lifelong allergy sufferer (dust, pollen, even my neighbor’s dogs), I needed more than Claritin. My NYC apartment had no space for separate ACs or heaters. That’s when I discovered this hot cool-capable machine. Skeptical at first—could one device really do it all?—but its lightweight design (I carried it upstairs solo) won me over.
Compared to standard air purifiers, this one tackled multiple problems. It fit perfectly in my tiny home, and the first whiff of cleaner air sold me. If you’re juggling space constraints and health needs, let’s just say—this might be your answer too.
Dyson Formaldehyde HP09 Air Purifier: Key Features
Most devices promise clean air—few deliver on a microscopic level. This one combines precision engineering with everyday practicality. Let’s unpack what makes it unique.
HEPA + Carbon Filter: Microscopic Defense
The HEPA H13 filter traps 99.95% of particles as small as 0.1 microns—smaller than pollen or dust mites. For context, a human hair is about 50 microns wide. That’s like catching a marble in a soccer net.
Then there’s the carbon layer. It neutralizes odors and VOCs from cooking, pets, or (in my case) an obsessive candle collection. After two weeks, my living room smelled like nothing—which, oddly, was the goal.
Catalytic Filter: Science You Can Trust
Unlike replaceable filters, the catalytic one destroys toxins permanently. It breaks them into water and carbon dioxide—no chemistry degree required. I tested it near a freshly painted wall (a known source of irritants), and the readings dropped within hours.
3-in-1 Functionality: More Than Just Air
Need heat? It warms a 140 sq ft room by 2°C in 15 minutes. Prefer cooling? The 350° oscillation beats competitors’ 90° range. No more choosing between comfort and air quality.
- No filter replacements: The catalytic feature lasts the device’s lifetime.
- Whisper-quiet on low settings—barely louder than a fridge hum.
Unboxing and Setup: How User-Friendly Is It?
Opening the box felt like unboxing a high-end gadget—sleek packaging, no excess plastic. The unit itself was lighter than expected (I lifted it solo), yet the matte finish screamed premium. No flimsy parts or confusing manuals—just three simple steps to assemble.
Assembly and Initial Impressions
The 5.9ft power cord was a lifesaver for my awkwardly placed outlet. Attaching the base took seconds, though the magnetic remote occasionally slid off—minor quibble. From unboxing to first boot: 9 minutes flat. Pro tip: Enable oscillation during setup. It’s buried in the settings but worth the extra tap.
Connecting to the Dyson App
Here’s the hitch: You’ll need both WiFi and Bluetooth. My Android 11 phone paired instantly, but iOS users reported glitches on older versions. The LCD screen mirrors app data (PM2.5, VOCs), though I preferred the tactile control of the remote. Voice commands? Hit-or-miss when my AC drowned them out.
- App quirks: Why no offline mode? A dealbreaker for some.
- Physical vs. digital: Remote wins for quick adjustments.
Performance Testing: Does It Live Up to the Hype?
Lab tests don’t lie—here’s how this device stacked up in real-world conditions. I burned incense, tracked temperature swings, and even measured noise levels with a decibel meter. The results? A mix of “wow” and “hmm.”
Air Purification: Matchsticks vs. Dust
In a controlled test, it removed 99.5% of smoke particles (from matches) in 10 minutes—faster than my old purifier. But dust took longer. The HEPA filter captures particles as small as 0.1 microns, yet oddly, incense cleared faster than pet dander.
- Shock result: Smoke vanished quicker than dust—ideal for fireplaces or cooking mishaps.
- Pollutant levels: Dropped 93.8% in 30 minutes during renovation simulations (paint fumes included).
Heating and Cooling: Not Quite an AC
It warmed my bedroom by 2°C in 15 minutes—great for winter. But cooling is just airflow, not true AC. On 90°F days, it moved air well but didn’t chill it. Pro tip: Pair with fans for better results.
- Heat distribution: Moved it daily; the oscillation covered 350°, unlike cheaper 90° models.
- Critical finding: Buy this for purification + heat, not as a summer cooler.
Noise: From Library to Café
At max speed (48dB), it’s like a quiet conversation. Night mode? A mere 28dB—quieter than my fridge. Perfect for light sleepers, though turbo mode sounds like a desk fan.
- Decibel breakdown: Low settings are library-quiet; high settings won’t drown out TV.
- Real-world win: I slept through allergy attacks without white noise machines.
Design and Usability: Form Meets Function
Good design should disappear into your life—this unit nearly succeeds. At 30″ tall with an 8″ base, it’s slim enough to tuck beside my 72″ sofa without dominating the room. The matte gold finish? Gorgeous, but it’s the fingerprint-resistant coating that saved my sanity.
Sleek Aesthetics and Space-Saving Footprint
Weighing just 12.6lbs, it’s lighter than my cat’s tower—yet feels sturdy. The tilt mechanism lets you direct airflow upward (great for high ceilings) or straight ahead. Here’s how it compares to common objects:
| Item | Height | Weight |
|---|---|---|
| HP09 | 30″ | 12.6lbs |
| Bar Stool | 32″ | 15lbs |
| Floor Lamp | 60″ | 10lbs |
The design trade-off? Beauty over pure functionality. The curved top collects dust, and the magnetic remote loves to slide off—I almost lost it twice.
Remote Control and LCD Display
The LCD screen shows real-time stats (PM2.5, VOCs), but the tiny font had me squinting. The remote’s control buttons are intuitive, though its glossy surface picks up smudges instantly.
- Stability test: Survived my cat’s curiosity—no tip-overs during her 3am zoomies.
- Real talk: Guests always ask about it. Whether that’s a pro or con depends on your patience.
With 350° oscillation, it covers corners better than cheaper models. Just don’t expect it to vanish into the background—it’s a conversation starter.
The Dyson App: Smart Features and Real-Time Data
I never thought an app could make me care about air quality—until now. The dashboard displays live updates on everything from pollen to cooking fumes. Suddenly, I was micromanaging my apartment’s atmosphere like a weather forecaster.
Air Quality Monitoring Breakdown
The app tracks five key pollutants, color-coding them for quick checks. Green means breathe easy; red triggers instant panic. Here’s what it caught in my tests:
| Pollutant | Source | Response Time |
|---|---|---|
| PM2.5 | Candle smoke | 8 minutes |
| VOCs | Fresh paint | 12 minutes |
| NO₂ | Gas stove | 15 minutes |
My weirdest discovery? Dry shampoo spikes PM2.5 levels. The alert system even flagged my neighbor’s BBQ smoke seeping through vents—creepy but impressive.
Scheduling and Voice Control
Syncing the settings to my work-from-home schedule was a game-changer. Mornings auto-set to turbo mode (bye, coffee breath). But voice control faltered—asking Alexa to adjust heat often triggered the wrong function. Pro tip: Use the remote for temperature tweaks.
- Missing feature: No auto-start during pollution spikes. I’d love hands-off protection during wildfire season.
- Filter tracking: Lifespan estimates saved me from guessing when to replace parts.
By week two, I was obsessively refreshing the quality graphs. Knowledge is power—until you realize how often you need to vacuum.
How It Compares to Other Dyson Purifiers
Navigating the lineup of premium purifiers can feel like decoding alphabet soup—HP, TP, PH—what’s the real difference? After testing all three models, here’s the breakdown.
HP vs. TP vs. PH: Decoding the Letters
The HP series (like this HP09) handles heating, cooling, and purification. The TP? Just cooling and cleaning—no heat. PH adds humidification, perfect for arid climates. My dry-skinned friends swore by the PH, but allergy sufferers (like me) prioritized toxin removal.
- Cost analysis: The HP09’s formaldehyde tech costs $300 more than the TP07. Worth it if you’re sensitive to chemicals.
- Feature loss: The HP01 lacks app control—a dealbreaker for smart-home fans.
Upgrade Verdict: Is the HP09 the One?
If you own an HP01, the jump to HP09 brings smarter features and better toxin capture. But TP users might not need heat, and PH buyers get hydration perks. Here’s my take:
| Model | Best For | Trade-Off |
|---|---|---|
| HP09 | All-in-one solutions | Higher price |
| TP07 | Cooling + purification | No heat |
| PH04 | Dry climates | Bulky water tank |
Final tip: The HP09 shines in a brand ecosystem. Pair it with a vacuum for full-home care—just don’t expect portability. At 12.6lbs, it’s lighter than the PH04 but still a commitment.
Pros and Cons: The Honest Verdict
The true test of any multi-functional appliance? How it holds up when daily life gets messy. After months of use—through cooking smoke, winter chills, and allergy season—here’s my unfiltered take.
What We Loved
Space-saving design was the game-changer. This single unit replaced my heater, fan, and old purifier—freeing up precious square footage in my apartment. The features worked seamlessly together, like when auto-mode ramped up purification during my disastrous attempt at stir-fry.
- Quiet operation: Night mode (28dB) eliminated my husband’s snoring complaints—marriage saved.
- Allergy relief: 90% fewer mornings with puffy eyes thanks to consistent particle levels.
- Fireplace fix: Real-time toxin detection eased my guilt about cozy winter nights.
What Could Be Improved
That premium price tag comes with hidden costs. While the catalytic filter lasts forever, the HEPA/carbon combo needs yearly replacements—about $80. Not bank-breaking, but worth noting.
- Cooling limits: It moves air well but won’t replace an AC in summer.
- Oscillation wobble: At max range, the base shakes slightly on hardwood floors.
- Room size: Struggled to maintain ideal conditions in my open-plan kitchen/living area.
Ultimately, it’s about priorities. If you value all-in-one convenience and health filter tech, the trade-offs may be worth it. But pure cooling performance or whole-home coverage? Look elsewhere.
Conclusion: Is the Dyson HP09 Right for You?
This isn’t a one-size-fits-all solution—here’s how to know if it matches your needs. Urban dwellers in small spaces (
The price stings, but it’s cheaper than buying separate heaters, fans, and purifiers. I’d recommend it to allergy sufferers or anyone renovating—that catalytic filter is a game-changer for quality air.
Prefer pure purification? The Coway AP-1512HH costs half as much. But if toxins like formaldehyde haunt your home, this appliance earns its keep. Built to last 5+ years, it’s an investment—so watch for holiday deals.
Final tip: Test it in your space first. Not all products play nice with open layouts. For the right buyer, though? Worth every penny.
