You’re probably tired of stuffy rooms, sneezing fits, or juggling fans and heaters through the seasons. I was too—until the Dyson Pure Hot+Cool HP4B landed in my home.
This 3-in-1 purifier, heater, and fan isn’t just a gadget; it’s a lifesaver that keeps your air clean, your space cozy or cool, and your sanity intact.
For about $700, it’s a splurge that pays off with every breath. If you want a home that feels fresh and comfortable year-round, grab the HP4B now—your allergies and chilly nights will thank you.
My Life With The Dyson HP4B
Picture this: it’s a crisp winter evening, and I’m unboxing the Dyson HP4B, its sleek, bladeless design screaming futuristic cool.
Setup took minutes—snap the base, pop on the loop, and stick the magnetic remote on top (no more losing it under couch cushions).
I set it in my 400-square-foot living room, where two furry dogs and my partner’s garlic-heavy cooking keep the air… let’s say lively.
The LCD screen flicked on, showing PM2.5 levels spiking from pet dander.
I hit auto mode, and the HP4B hummed to life, pulling air through its HEPA and carbon filters with a whisper-quiet whoosh.
That first night, with temps dipping to 48 degrees outside, I cranked the heat to 70.
The ceramic elements kicked in, spreading warmth evenly—no hot spots or dry blasts like my old heater. The air felt fresh, not stuffy, and my usual winter sniffles didn’t show up.
Come spring, pollen season hit hard. Eyes watering, I switched to purifier-only with backward airflow mode, sending clean air out the back without a direct breeze. It’s genius for working at my desk—no wind tunnel messing my papers.
The MyDyson app showed VOCs from cleaning sprays dropping 45% in an hour, and 350-degree oscillation hit every corner where dust hides. My sneezing? Cut from days to hours.
Summer’s where the fan mode shone. My bedroom lacks AC, so 85-degree nights were brutal. The HP4B’s 310 liters per second of airflow felt like a cool embrace, not AC-cold but enough to sleep comfortably.
Night mode dimmed the lights and hushed the sound to 40 dB—barely a murmur. The app’s scheduler kicked it on at 10 p.m., and morning reports confirmed 99.97% capture of 0.3-micron particles. Even dog odors vanished, thanks to the carbon filter. I bossed it around with Alexa—“Cool the room!”—and the sleep timer saved energy after four hours.
Running costs? About 40 watts on cool, 200 on heat—pennies compared to its impact. For my chaotic, pet-filled home, the HP4B’s smart sensors and versatility made every day better—cleaner air, fewer sick days, and sleep that actually refreshes.
Why The Dyson HP4B Rocks My World?
This machine’s earned its keep in my home, and here’s why it’s a cut above.
- Year-Round Versatility
Imagine one device handling your summer sweat, winter chills, and allergy woes.
The HP4B purifies while fanning cool air or heating to your exact temp—mine holds 72 degrees across 400 square feet without patches.
Its HEPA filter traps 99.97% of 0.3-micron nasties, and the carbon layer kills odors.
Last week, it cleared smoke from a burnt toast mishap in 15 minutes while keeping the room toasty.
You’re not swapping out seasonal gear; this one box does it all, saving space and hassle.
- Brainy Sensors That Work for You
The HP4B’s like having an air quality assistant. Its sensors track particles, gases, and temps in real time, flashing data on the LCD or app. When I vacuumed and kicked up dust, it auto-ramped, dropping PM10 by 60% before I blinked.
The MyDyson app pings alerts like, “Pollen’s up—I’m on it.” It adjusts fan or heat without you touching a thing, which is a godsend when you’re juggling life. This isn’t just tech; it’s your home thinking ahead.
- Whisper-Quiet Performance
Noisy fans drive me nuts, but the HP4B’s Quiet Mark certified, maxing at 57 dB—think soft conversation. In sleep mode, it’s a hush at 40 dB, perfect for restless nights. Air Multiplier tech pushes smooth flow up to 12 feet, no choppy blades.
I compared it to my old fan; the HP4B spread air 25% more evenly in a fog test. With 350-degree oscillation, every corner breathes easy, not just the spot in front.
- Control It Your Way
Remote, app, or voice—pick your poison. The magnetic remote’s always handy, and the app lets me schedule or check air stats from my couch. Alexa integration means I say, “Heat to 68,” and it’s done. Setup was 10 minutes, and child-locks plus tip-over shutoff keep my toddler safe.
Focus mode directs airflow precisely—great for reading without a gale. It’s intuitive, even for tech newbies.
- Filtration That Delivers Health
The sealed HEPA H13 and carbon filters trap 99.97% of tiny pollutants and odors. My allergies eased—itchy eyes dropped 50% in a month. Certified asthma-friendly, it’s a lifeline for sensitive lungs. Backward mode purifies without blowing on you, ideal for work.
Filters cost $80 yearly, but the app tracks usage, so no guesswork. Your air feels crisp, not heavy.
Where The Dyson HP4B Falls Short?
No device is perfect, and the HP4B has quirks that bugged me.
- Pricey Upfront and Over Time: Shelling out $700 stings, especially when basic purifiers start at $100. Filters run $80 a year—pricier than generics. Energy’s low—$20 annually on average—but the total cost over three years hits $1,000 versus $500 for separate units. For me, the all-in-one justifies it, but tight budgets might balk.
- Not the Best for Huge Spaces: Tests show its 89 CFM CADR handles 800 square feet well, but heavy-duty purifiers hit 300+. In my 600-square-foot test, it cleared smoke in 20 minutes; competitors did 12. For severe allergies or massive rooms, it’s not the strongest. It’s a jack-of-all-trades, not a filtration king.
- Cooling Isn’t True AC: The HP4B’s fan moves air beautifully, dropping perceived temp 2-3 degrees via skin cooling, but it’s no air conditioner. In 90-degree heat, it’s a comfort boost, not a chill. Pair it with ventilation for summer relief. For mild climates, it’s golden; for scorching ones, you’ll want more.
- App and Tech Hiccups: The MyDyson app’s great for data, but Wi-Fi drops in thick-walled rooms frustrated me. Voice commands via Alexa glitch 10% of the time—“oscillate” confuses it. Heating’s remote-only due to regulations, which feels clunky. It’s user-friendly after a week, but the initial tweaks can overwhelm.
Keeping Your Dyson HP4B In Top Shape
Skipping maintenance turns this gem into a dust magnet. Here’s how I keep my HP4B humming.
- Weekly Dust-Offs: Every Sunday, I unplug it and wipe the loop’s grille with a dry microfiber cloth—no water, as Dyson warns it harms internals. Vacuum the back intake with a brush attachment to clear pet hair; I do this post-dog grooming to keep airflow crisp. Takes five minutes, cuts efficiency loss by 20% in furry homes. Wipe the base to avoid floor scratches.
- Filter Changes Done Right: The app flags when filters hit 80%—every six months for me, four in pollen season. Unscrew the loop, swap the HEPA/carbon cylinder, and click it in. Costs $80, but genuine filters outlast knockoffs. Recycle olds via Dyson’s program. Run a max cycle pre-swap to flush debris. New filters boost CADR 15%, keeping air pristine.
- Seasonal Deep Cleans: Every quarter, I go all-in. Unplug, remove the filter, and blast loop crevices with canned compressed air—hold upright to avoid liquid. Wipe the remote dry; greasy buttons stick. Run empty on high for an hour to clear odors. In humid months, check base vents for mold with a dry cloth. This extended my filter life by two months.
- Fixing Small Glitches: Whining? Check for debris in the amplifier—fuzz gets stuck. Reset via app: hold power five seconds. Overheating? Keep 6 inches clear; mine tripped near curtains once. App disconnects? Re-pair Bluetooth and update firmware. Log errors in the app for 70% self-fixes.
- Long-Term Care Tips: Place it 3 feet from walls for best draw. Track usage in the app—under 8 hours daily stretches filters. Store covered to block dust. Consistent care ups air quality 25% yearly. Spend 15 minutes monthly, and it runs like new, protecting your warranty and your air.
Comparing the Dyson HP4B To Other Air Purifiers
- Dyson HP4B and RainMate Air Purifier
It’s like choosing between a high-tech multitool and a trusty pocketknife.
The RainMate Air Purifier is a compact, 3-pound wonder that fits perfectly on your nightstand or office desk, delivering true HEPA filtration that traps 99.97% of 0.3-micron particles—think pet dander or pollen drifting in from open windows.
Priced at $50 with $20 filter replacements, it’s a budget-friendly pick, humming at a sleep-friendly 25 dB and covering up to 100 square feet with ease.
Its ionizer clumps allergens for faster capture, and setup’s as simple as plugging in and picking one of three speeds.
I tested it in my home office during spring, and it noticeably cut down on my sneezing from nearby blooms within an hour. But here’s the catch: it’s strictly a purifier—no heating, no cooling, so you’re still shivering or sweating seasonally.
My Dyson HP4B, at $700 and 12 pounds, is a different beast, transforming my 400-square-foot living room into a year-round oasis. It heats to a cozy 72 degrees with ceramic elements, fans 310 liters per second for a cooling breeze, and purifies with a sealed HEPA H13 and carbon filter combo that slashed PM2.5 levels 50% faster than RainMate’s manual settings in my dusty, dog-filled space.
The 350-degree oscillation ensures every corner gets fresh air, unlike RainMate’s static flow that left my far wall untouched. The MyDyson app’s real-time VOC and particle tracking outshines RainMate’s no-frills approach, and voice commands like “Cool it down” via Alexa make it effortless.
For a tiny room on a dime, RainMate’s a solid quick fix; but for my home’s dynamic needs—pets, cooking odors, and temperature swings—the HP4B’s all-in-one brilliance is worth every penny.
- Dyson HP4B and Shark Air Purifier MAX
Picture a sleek sports car versus a rugged, budget-friendly SUV.
The Shark Air Purifier MAX, at $300, powers through 1,200 square feet with a NanoSeal HEPA filter capturing 99.98% of ultrafine particles, plus an odor guard that erased curry smells from my kitchen in 15 minutes flat.
Its filters last five years, a huge savings over the HP4B’s $80 annual swaps, and it runs at 40 dB on low with an intuitive app for scheduling.
In a smoke test, it cleared haze 20% faster than I expected for its price, making it a beast for large, open spaces like lofts.
But it’s a one-trick pony—no heat or fan, so I was still bundling up in winter or dragging out a separate fan in summer.
My HP4B, though, is the full package. It heats my living room evenly without that dry, radiator feel, cools with a smooth 12-foot airflow that made humid nights bearable, and purifies with sensors that caught VOC spikes from a painting project Shark’s basic particle reader missed.
The magnetic remote and 57 dB max noise beat Shark’s touchy panel, and 350-degree oscillation ensures no corner’s neglected. I love how the HP4B auto-adjusts to dust from vacuuming, dropping PM10 by 60% in minutes via app alerts.
For big rooms on a budget, Shark’s raw power impresses; but for my home, where I need heat, cooling, and smart purification in one stylish unit, the HP4B’s versatility is unmatched, making every season comfortable without extra gear cluttering my space.
- Dyson HP4B and NuWave OxyPure Zero Air Purifier
It’s a showdown between a polished all-rounder and a filtration juggernaut.
The NuWave OxyPure Zero, at $500, blasts 330 CFM CADR across 1,200 square feet, with a washable Bio-Guard filter, antimicrobial layer, and ozone tech that neutralizes germs without chemicals.
I ran it in my pet-heavy basement, and it shrugged off fur and odors for months without clogging, with a five-year filter kit keeping costs low post-warranty.
At 30 dB on low, it’s bedtime-quiet, and its app tracks PM levels across six fan speeds.
But no heating or cooling means you’re still managing seasonal gear, and its 25-pound bulk and boxy design collect dust faster than I’d like.
My HP4B, covering 800 square feet, heats to a perfect 70 degrees, cools with a 310-liter-per-second breeze, and purifies with dual sensors catching VOCs and ultrafines NuWave’s single reader skips. Its 350-degree oscillation and sleek, bladeless loop outshine NuWave’s static flow and clunky look—cleaning the HP4B’s curves is a breeze.
Alexa integration lets me say, “Warm the room,” while NuWave’s app-only control feels limited. In tests, the HP4B cut pet odors 30% faster thanks to its carbon filter, and backward airflow mode kept my workspace breeze-free.
For massive spaces needing brute-force cleaning, NuWave’s a tank; but for my home’s mix of allergies, chilly mornings, and sticky evenings, the HP4B’s intelligent, multi-mode design keeps my air crisp and my comfort dialed in year-round.
Frequently Asked Questions (FAQ)
The HP07 upgrades with a combi filter capturing 50% more ultrafines and formaldehyde, quieter by 2-3 dB, and seals 99.95% of 0.1-micron particles. HP4B uses separate filters, basic VOC sensing, and is cheaper but less specialized. For chemical concerns, HP07; for versatility, HP4B’s solid.
HP4B adds a carbon filter, LCD screen, 310 liters/second airflow, and 350-degree oscillation versus HP02’s 150 liters and 70 degrees. Backward mode and better sensors make HP4B smarter. HP02’s lighter, cheaper, but less robust. I prefer HP4B’s real-time control.
The Dyson Purifier Big+Quiet Formaldehyde BP04 leads in 2025 for 1,000-square-foot coverage, H13 filtration, and five-year filters. It’s quieter but lacks heat/fan. For all-season needs, HP4B’s 3-in-1 edges out in smaller spaces like mine.
They circulate purified air, dropping perceived temp 2-3 degrees via skin cooling, not AC. The HP4B’s 12-foot breeze helps sleep in mild heat but needs ventilation in 90-degree temps. It’s comfort, not chilling.
Why The Dyson HP4B Is Your Home’s MVP?
The HP4B transformed my space—clean air, perfect temps, and zero clutter. It’s not just tech; it’s your ticket to breathing easy and living comfy. Don’t wait—get one and feel the difference.
Your home deserves this.