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The signature scent [new_line] of your favorite room.

N° 01 · Of presence

The signature scent
of your favorite room.

The Air 2 is sized for a single room — the bedroom you wake up in, the studio you work from, the entryway guests step into. Same hotel-grade cold-air diffusion as our flagship, just in a slimmer aluminum cylinder that vanishes into a bookshelf or sits beside a candle on a console. Up to 1,000 square feet of consistent, programmable scent without heat, water, smoke, or a single visible trace.

One room. One scent. One small object you'll forget is there.

1,000sq ft coverage
120mlrefillable bottle
<22dBwhisper motor
100%recycled aluminum
Wake to it. Sleep through it. [new_line]Set it once.

N° 02 · Of control

Wake to it. Sleep through it.
Set it once.

Pair by Bluetooth or Wi-Fi. Your phone becomes a quiet remote — set a morning ramp from 6:30 a.m., a sleep mode that softens at 10, a lower cadence while you're away. Switch scents seasonally without touching the device.

Intensity
Fine 1–100 control tuned for a single room
Schedule
Morning ramp · sleep mode · per-day programs
Refill alerts
A gentle notification · never run dry
Routines
Wake · Sleep · Away · Guest

The ritual

How to begin.

Four steps. Four minutes. Experience the difference.

  1. N° 01
    Unlock
    UnlockLift up the diffusion head to reveal the fragrance bottle compartment.
  2. N° 02
    Fill
    FillRemove the empty bottle and either refill it with your preferred fragrance oil or attach a new 120 ml bottle directly. For best performance, do not fill past the bottle's shoulder.
  3. N° 03
    Power
    PowerEnsure the diffuser is plugged in, then turn it on using either the included remote control or the power button on the device.
  4. N° 04
    Refine
    RefineDownload the Scentiment app to set schedules, routines, and refill alerts. Optional — but recommended.

Bundled in your kit

Includes our
best-selling hotel oils.

Three 20 ml discovery bottles, hand-picked from Scentiment's most-shipped hotel-grade fragrances. Every kit, every time.

  1. N° 01 · The One

    N° 01 · The One

    Inspired by 1 Hotel® Miami Beach

    Top
    Cardamom · Leather · Lemon
    Middle
    Cinnamon · Oud Wood · Sandalwood
    Base
    Amber · Musk · Vetiver
  2. N° 02 · Ocean Breeze

    N° 02 · Ocean Breeze

    Inspired by Ritz-Carlton®

    Top
    Sparkling Bergamot · Bright Lemon
    Middle
    Fresh Jasmine · Clean Marine Accord
    Base
    Warm Amber · Soft Musk
  3. N° 03 · Day Dream

    N° 03 · Day Dream

    Inspired by Westin® Hotels

    Top
    Aloe Vera · Ginger · White Tea
    Middle
    Amber · Cedarwood · Creamy Vanilla
    Base
    Lily · Soft Musk · Earthy Sandalwood

A quiet comparison

What sets the Air 2 apart.

Scentiment Others
Cold-air, waterless diffusion
Refillable bottle · no plastic pods
Whisper-quiet motor (< 25 dB)
IFRA-compliant, pet/kid safe fragrances
24/7 customer care · concierge returns
Priced for the home, not the hotel

Formulated with care

Safe for the ones at your feet.
And the ones in your arms.

Every Scentiment fragrance is IFRA-compliant and formulated without phthalates, parabens, or the essential oils known to be harmful to pets. We test each formula for pet and child safety before it ever reaches your home.

Questions we hear often

What people ask, answered.

The questions our concierge team and the internet send our way most about single-room cold-air diffusion. If yours isn’t here, write to support@scentiment.com — a real person replies within one business day.

What is the Diffuser Air 2 Discovery Kit?
The Diffuser Air 2 Discovery Kit is a bundle built around our cold-air diffuser — the same precision air-pump technology used in luxury hotels — sized for up to 1,000 sq ft. It's the easiest way to start with Scentiment: the device and our 20 ml refillable bottle, plus a curated set of bestselling fragrance oils so you can try multiple scents in your space from day one.
What's included in the Diffuser Air 2 Discovery Kit?
The Diffuser Air 2 Discovery Kit ships with the Scentiment diffuser and a curated set of bestselling fragrance oils. Includes Top 3 Scents. It's the fastest way to find which Scentiment fragrance fits your home — load each oil in sequence over the first few weeks and you'll know which to subscribe to.
How long does a 20 ml bottle last in the Diffuser Air 2 Discovery Kit?
A 20 ml bottle lasts approximately 30–60 days on the default Medium intensity, running roughly 12 hours per day — run-time scales with three things: intensity setting, daily run hours, and room size. Low intensity stretches each bottle substantially further; High intensity (used before guests arrive or in rooms with active airflow) shortens it. Auto-replenishment in the Scentiment app ships refills before you run out.
How much area does the Diffuser Air 2 Discovery Kit cover?
The Diffuser Air 2 Discovery Kit is rated for up to 1,000 sq ft with normal residential ceiling heights (8–10 ft). If your space is a different size, see Diffuser Mini 2 LE (up to 500 sq ft) or Diffuser Pro 2 (up to 2,000 sq ft). Coverage assumes a normally insulated room with average air circulation; open-plan layouts, vaulted ceilings, or rooms with constant airflow may need a step up in tier.
How loud is the Diffuser Air 2 Discovery Kit?
The Diffuser Air 2 Discovery Kit runs on intermittent ON/OFF cycles — a short pump burst followed by 2–5 minutes of silence depending on intensity. The pump itself is quiet and inaudible from a few feet away. For context, a refrigerator hum is 40–45 dB, an air purifier on low is 35–50 dB, and a quiet bedroom at night measures around 30 dB. Most owners describe the cycle as a soft whisper you stop noticing after a minute in the room.
Is the Diffuser Air 2 Discovery Kit safe for pets, children, and people with allergies?
Yes. Every Scentiment fragrance is IFRA-certified to Category 11 (the strictest air-care tier) and formulated without phthalates, parabens, formaldehyde, California Prop 65 reproductive toxins, and the essential oils most commonly cited as toxic to cats and dogs (tea tree, pennyroyal, pine, wintergreen, sweet birch, concentrated citrus). Cold-air diffusion produces no heat, no combustion byproducts, and no surface residue — important for nurseries, beds, and pet spaces. We disclose all 26 EU Annex III fragrance allergens on each scent's product page so families with sensitivities can choose accordingly.
How do I clean and maintain the included diffuser?
Maintenance is minimal. Whenever you change scents, run a brief cleaning cycle with 70% isopropyl alcohol — pour a small amount into the empty bottle, run the Diffuser Air 2 Discovery Kit for 5–10 minutes on High, then dry. This clears residual oil from the air channel so the next scent comes through clean. Wipe the exterior with a soft microfibre cloth (no harsh solvents, no water inside the air pump). The bottle can be rinsed with warm water and a drop of mild dish soap between scents.
Does the Diffuser Air 2 Discovery Kit have an app or Bluetooth control?
Yes. The Diffuser Air 2 Discovery Kit pairs with the Scentiment app (iOS and Android) over Wi-Fi and Bluetooth Low Energy. From the app you can switch between intensity settings, set daily ON/OFF schedules, run pre-arrival scenting routines, monitor estimated bottle life, and order refills. The unit also has on-device controls so it works without the app — useful for guest rooms or rentals.
Where should I place the Diffuser Air 2 Discovery Kit for best results?
Place the Diffuser Air 2 Discovery Kit on a flat, stable surface in the room you want to scent — a table, shelf, or counter at waist height or higher works best. Cold-air micro-mist rises and spreads with natural air currents, so a spot near a doorway or in the path of gentle airflow helps fragrance travel evenly. Avoid tight corners, enclosed shelves, or spots directly next to an AC vent that would push the mist away before it disperses. A couple of feet of open space around the unit is all you need.
What is the Scentiment Diffuser Air 2?

The Scentiment Diffuser Air 2 is a cold-air nebulizing fragrance diffuser sized for a single room — bedrooms, studios, offices, entryways, and other spaces up to roughly 1,000 square feet. It uses a precision air pump to disperse pure, undiluted fragrance oil as a dry micro-mist with no water, no heat, no carrier solvents, and no aerosol propellants. The Air 2 is the second generation of our signature-tier diffuser, with a quieter pump (under 22 dB at one metre), a refillable 120 ml bottle, programmable schedules, and an aircraft-grade matte aluminum cylinder slim enough for a bookshelf or console.

How does cold-air diffusion work, and how is it different from ultrasonic or reed diffusers?

Cold-air nebulizing diffusion works by pushing pressurized air across the surface of fragrance oil to break it into micro-droplets between one and three microns in size. Those droplets evaporate within seconds, distributing scent evenly through a room without ever heating the oil or thinning it with water.

  • Versus ultrasonic diffusers: Ultrasonic units mix essential oil with water and vibrate the mixture into a wet mist. The water dilutes the scent, the mist leaves residue on furniture, and the oil degrades faster. Cold-air diffusion delivers the full molecular profile of the fragrance and leaves no residue.
  • Versus heated wax warmers and candles: Heat alters and partially destroys top-note molecules and produces combustion byproducts. Cold-air diffusion is non-combustion and emits only the fragrance itself.
  • Versus reed diffusers: Reed diffusers rely on capillary evaporation, which is slow, uneven, and weakest in larger rooms. The Air 2 covers up to 1,000 sq ft with consistent, programmable intensity.
How long does one bottle of Scentiment fragrance last in the Air 2?

A 120 ml bottle of Scentiment fragrance oil lasts approximately 45 to 70 days on the default ON 1 minute / OFF 14 minutes schedule, run for 12 hours per day in a 500–800 sq ft space. Run time depends on three things: intensity setting, daily run hours, and room size. Higher intensity in a larger room shortens duration; conservative settings in a small bedroom can stretch a bottle past two months. The Air 2's app and on-device display report estimated days remaining, and you can enable auto-replenishment so refills ship before you run out.

How much area does the Diffuser Air 2 cover?

The Diffuser Air 2 is rated for spaces up to 1,000 square feet with normal residential ceiling heights (8–10 ft) and standard interior airflow. It's the right tier for a primary bedroom, a studio apartment, a home office, or a small open-plan living area. For larger rooms or whole-floor scenting (1,000–2,000 sq ft), step up to the Diffuser Pro 2; for a single small office or a child's bedroom (under 500 sq ft), the Diffuser Mini 2 is more cost-effective.

How loud is the Scentiment Diffuser Air 2?

The Air 2 operates at under 22 decibels measured at one metre — quieter than a whisper and inaudible from the next room. For context, a refrigerator hum is 40–45 dB, an air purifier on low is 35–50 dB, and a quiet bedroom at night measures around 30 dB. The Air 2 also runs on intermittent ON/OFF cycles by default, so the brief pump cycle is followed by a long silent interval — most owners report not hearing the device at all once it's been running a day or two.

Is the Scentiment Diffuser Air 2 safe for pets, children, and people with allergies?

Yes. Every Scentiment fragrance is IFRA-certified to Category 11 (the strictest air-care tier) and formulated without phthalates, parabens, formaldehyde, California Prop 65 reproductive toxins, and the essential oils most commonly cited as toxic to cats and dogs (tea tree, pennyroyal, pine, wintergreen, sweet birch, concentrated citrus). Cold-air diffusion produces no combustion byproducts and no surface residue — important for nurseries, beds, and pet spaces. We disclose all 26 EU Annex III fragrance allergens on each scent's product page so families with sensitivities can choose accordingly.

How is the Air 2 different from the Diffuser Pro 2?

Same cold-air diffusion technology, sized for a single room. The Air 2 is a 3.25-inch slim aluminum cylinder rated for spaces up to 1,000 sq ft, with a 120 ml refillable bottle — built for bedrooms, offices, and studios. The Pro 2 is our flagship machine: larger body, 200 ml bottle, rated for spaces up to 2,000 sq ft. Choose Pro 2 for primary living spaces and open-plan homes; choose Air 2 for any room you want to scent without thinking about the device. Both pair with the same Scentiment fragrance oil library.

How does Scentiment compare to Aera, Pura, Aroma360, or other diffuser brands?

The most useful comparison is technology, refill economics, and fragrance quality:

  • Versus Aera: Aera uses sealed proprietary capsules with a heated micro-pump; Scentiment uses a refillable bottle with cold-air nebulizing. Our refills are roughly 40–60% the cost per millilitre of equivalent Aera capsules, and the open library means you're not locked into one vendor's scents.
  • Versus Pura: Pura is a heated plug-in scenting a single small room (~200 sq ft) — closer to a wax warmer than a true diffuser. The Air 2 covers up to 5× the area with cold diffusion, preserving the full fragrance profile.
  • Versus Aroma360: Aroma360 is also a cold-air nebulizing line. The practical difference comes down to fragrance library, refill cost, and warranty terms — Scentiment ships with a 120 ml refillable bottle, a one-year limited warranty, and a 14-day risk-free return.
Does the Diffuser Air 2 have an app or Bluetooth control?

Yes. The Air 2 pairs with the Scentiment app (iOS and Android) over Bluetooth Low Energy. From the app you can adjust intensity, set up to four daily ON/OFF schedules, switch between custom modes for weekdays vs. weekends, monitor estimated bottle life, and order refills. The unit also has on-device controls — a single capacitive button cycles intensity and a small OLED display shows current settings — so it works without the app if you prefer.

What's the warranty and return policy?

The Diffuser Air 2 comes with a one-year limited warranty covering manufacturing defects and pump performance, plus our 14-day risk-free return. If you don't love the diffuser within 14 days of delivery, we'll arrange a free return shipment and refund — no restocking fee. Optional Protect+ coverage at checkout extends accidental-damage protection beyond the standard warranty. Refill bottles are non-returnable once opened for hygiene reasons but can be exchanged unopened.

How do I clean and maintain the Diffuser Air 2?

Maintenance is minimal. Every time you change scents, run a cleaning cycle with the alcohol-based cleaner that ships with the unit (or with isopropyl alcohol 70%): pour a small amount into the empty bottle, run the diffuser for 5–10 minutes on max intensity, then dry. This clears any residual oil from the air channel so the next scent comes through clean. Wipe the exterior aluminum with a soft microfibre cloth — no harsh solvents, no water inside the air pump. With normal use the pump is rated for over 10,000 hours.

Can the Diffuser Air 2 run continuously, 24/7?

Yes — but we don't recommend it for residential use. Continuous diffusion saturates a room past the point where the human nose registers the fragrance (olfactory adaptation), so you stop noticing the scent while still consuming oil. The default and recommended schedule is ON for 1 minute, OFF for 14 minutes during waking hours, which keeps the scent perceptible to anyone entering the room and stretches a 120 ml bottle to its full 45–70 day life. For boutique retail or hospitality settings the app supports extended schedules.

Where should I place the Diffuser Air 2 in my home?

Place the Air 2 centrally in the room, ideally on a surface 2–4 ft above the floor, with a few inches of clear space around the air outlet at the top. Cold-air diffusion follows natural room convection, so positioning near a vent, ceiling fan, or doorway helps the scent travel without needing to crank up intensity. The slim 3.25-inch diameter fits a bookshelf, console, or nightstand without taking visual weight. Avoid placing it directly on heat-sensitive electronics or near a humidifier. For a primary bedroom, the diffuser on the dresser at chest height gives the most consistent overnight experience.

See questions answered by Scentiment customers in the reviews section.

What people are saying

Reviews from real homes.

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