The specification: ₹11,999 · up to 1000m³ (about 2,000–3,000 sq ft) · 400ml tank · 90+ days a fill · 1h/4h/8h/24h timers · adjustable intensity · auto-stop · key-lock · Bluetooth app plus onboard buttons · under 38 dB · 5W · 0.9 kg · CE, RoHS, SGS.
Fragrance: four Hotel Collection cold-air scents at 100ml each in the box, in one of three combos chosen at checkout. No separate refill oil is sold today — check with SOSA before buying if supply matters.
Running cost: electricity is trivial and computable — 5W × 8 hrs = 0.04 kWh a day. Fragrance is the real cost and currently the open question.
- The straight answer
- Part one — space size, measured properly
- Part two — the specification, line by line
- Part three — fragrance, and the one gap
- Part four — usage and running cost
- Part five — the whole range, placed
- Part six — who should and should not buy
- Part seven — before you order
- A note from Sonal
- FAQs
2. Compare it against 1000m³, not against a square-footage figure. The published 2,000–3,000 sq ft is a conversion: 1000 ÷ 3m ≈ 333m² ≈ 3,585 sq ft at a standard slab, but 1000 ÷ 4.5m ≈ 222m² ≈ 2,390 sq ft under a high one.
3. Under ~150m³, buy smaller. A Sukoon at ₹1,899 covers 270–320 sq ft; two at ₹3,798 cover an open living-dining. ₹11,999 ÷ ₹1,899 ≈ 6.3.
4. Above ~250m³ of open connected air, the Vaayu is the honest answer and the alternatives stop being credible — four or five tanks, four or five timers, four or five things to remember.
5. What you get for ₹11,999: waterless cold-air nebulisation of undiluted oil, up to 1000m³, a 400ml refillable tank at 90+ days a fill, 1h/4h/8h/24h timers with adjustable intensity, auto-stop and key-lock, Bluetooth app plus onboard buttons, under 38 dB, DC 12V/1A at 5W, 165 × 80.5 × 215 mm at 0.9 kg in black or white, freestanding or wall and HVAC mounted, CE, RoHS and SGS certified, made in India.
6. What comes in the box: four SOSA Hotel Collection cold-air fragrances at 100ml each — 400ml in total — in one of three combos chosen at checkout at the same price.
7. What it costs to run, in electricity: 5W × 8 hrs = 40Wh = 0.04 kWh a day, roughly 1.2 kWh a month; 5W × 24 hrs = 0.12 kWh a day, about 3.6 kWh a month. Multiply by your own per-unit tariff — rates vary by state and slab, and no bill is being quoted.
8. What it costs to run, in fragrance — the honest gap. SOSA does not currently sell a separate Vaayu refill oil. The 400ml in the box is the whole supply available today, and the water-based Hotel Collection for ultrasonic machines is a different product and not a substitute. Confirm current availability with SOSA before purchasing.
Composed and handmade in small batches in Pune by an ISIPCA Versailles-trained perfumer, and a portion of every order supports girl-child education through Nanhi Kali.
Part one — space size, measured the way the machine is rated
Every mistaken purchase in this category, at every price, begins with a mismatch of units. A buyer compares the floor area of their home against a coverage figure on a listing, and those two numbers were never measuring the same quantity. Scent machines are rated on the volume of air they can carry fragrance through, which is why the Vaayu's real specification is up to 1000 cubic metres and why the square-footage translation has to be a range. Ten minutes with a tape, or with your own stride, produces a number that settles the decision more reliably than any amount of reading. Do it before you compare prices, because the number frequently comes out smaller than people expect and sends them down the range rather than up it.
Mountain Breeze₹849 · 50mlA 40m² hall under 3m is 120m³; the same 40m² under a 6m double-height void is 240m³. Identical floor plan, twice the scenting problem — and the extra volume sits above head height, where warm scented air collects and nobody is standing. Open stairwells behave the same way, drawing air upward like a chimney and exporting fragrance to the landing. Measure the true height at its highest point, include it, and then place the machine low and aimed into the traffic rather than up into the void. This is also why our published figure is a band: 1000m³ ÷ 3m ≈ 333m² ≈ 3,585 sq ft, 1000m³ ÷ 4.5m ≈ 222m² ≈ 2,390 sq ft, 1000m³ ÷ 5m = 200m² ≈ 2,152 sq ft. Same machine, same volume, a floor area that moves by well over a thousand square feet depending on your slab.Part two — the specification, line by line, and what each line is for
Every figure below is checkable against the live product page. The right-hand columns say what each one actually does for a buyer, because a specification sheet is only useful once you know which lines are load-bearing for your situation.
| Specification | The figure | What it means in practice | Who it matters most to |
|---|---|---|---|
| Coverage ★ | Up to 1000m³ ≈ 2,000–3,000 sq ft | A volume rating; the sq ft band varies with ceiling height | Anyone with a genuinely open floor above ~250m³ |
| Technology | Waterless cold-air nebulisation, undiluted oil | Dry mist, no residue, no added humidity — unlike an ultrasonic | Coastal and monsoon-climate buyers |
| Tank | 400ml refillable · 90+ days a fill | Roughly four fills a year at the reference setting | Anyone tired of weekly attention |
| Timers | 1h / 4h / 8h / 24h, adjustable intensity, auto-stop | The building smells of something as a policy, not a habit | Hosts and business owners |
| Key-lock | Onboard lock | The setting you chose survives staff and guests | Commercial buyers above all |
| Control | Bluetooth app plus onboard buttons | It runs without a phone — no app dependency | Anyone worried about orphaned software |
| Noise | Under 38 dB | Quiet enough for a conversation across a counter | Clinics, salons, living rooms |
| Power | DC 12V / 1A · 5W | 0.04 kWh a day at 8 hrs — compute your own cost | Anyone running it long hours |
| Size and weight | 165 × 80.5 × 215 mm · 0.9 kg · black or white | Small enough to sit out of reach or lie flat | Rental properties |
| Installation | Freestanding, or wall / HVAC mounted | Can feed a duct network instead of a room | Centrally air-conditioned buildings |
| Certification | CE · RoHS · SGS | Electrical and materials compliance you can name | Commercial and institutional buyers |
| In the box | Four Hotel Collection fragrances, 100ml each | 400ml total, one of three combos chosen at checkout | Everyone — and see Part three |
| The honest caveat: four things a buyer reasonably wants to know are not in this table, because they are not figures we publish and inventing them would be worse than omitting them — warranty length, spare-part availability, whether an installation service exists, and bulk or corporate terms. The app's supported platforms are in the same category. Ask SOSA directly, get the answers in writing, and keep them. That is advice I would give about any seller in this category, and it applies to us with the same force. | |||
Part three — fragrance: what ships, what it smells of, and the one gap
The machine arrives with 400 millilitres of cold-air fragrance, supplied as four bottles of 100ml, and you choose one of three combos at checkout for the same price. Combo 1, The Luxury Hotel Collection, is the safest and the one I recommend to anyone housing strangers: a Ritz-Carlton-inspired Quiet Luxury of white tea, bergamot and cedar; a Westin-inspired White Tea Serenity of white tea, aloe and cedar; a St. Regis-inspired Old-World Glamour of amber, violet and woods; and a 1 Hotels-inspired Forest Suite of cedarwood, vetiver and green leaves. Combo 2, Fresh & Relaxing, replaces two of those with a Shangri-La-inspired Tea Garden of jasmine, green tea and white tea, and a Four Seasons-inspired Warm Welcome of citrus, floral and sandalwood — the lightest of the three, and the right choice for a warm coastal property. Combo 3, Signature Luxury, is the most characterful, adding a W Hotels-inspired Lobby Bar of citrus, pepper and amber to the amber and cedar registers, and suits a space with an interior that already has an opinion.
Now the gap, stated as plainly as I can put it, because it is the single most important thing on this page. SOSA does not currently sell a separate refill oil for the Vaayu. The 400ml that ships in the box — specified at 90+ days per fill at a mid intensity setting — is the whole cold-air fragrance supply available from us at the time of writing. I am not going to quote you a refill price for something we do not sell, and I am not going to point you at another product as a substitute. If long-term supply is material to your decision, and for a commercial buyer running the machine daily it certainly is, ask SOSA where refill availability stands before you place the order. That is the same question I would want you to put to any seller in this category, and it would be dishonest to raise it about others and duck it about ourselves.
One distinction that must not blur, and which our own product page has been looser about than it should be. The cold-air oil in the Vaayu box is a different product from the water-based Hotel Collection we sell for ultrasonic machines at 15ml ₹299, 100ml ₹999 and 300ml ₹1,799. They share scent names because they are drawn from the same olfactory brief, but a nebuliser atomises neat oil while an ultrasonic vaporises a water-and-fragrance mix from a tank, and the two formulations are not interchangeable in either direction. The ₹999 bottle is not a Vaayu refill. Nor does reed diffuser oil — which sits on a coconut-derived CCT carrier designed to climb a fibre reed slowly — go into any machine at all. Three fluids, three destinations, and keeping them on separate shelves is the whole of the discipline.
Part four — usage and running cost, with the arithmetic shown
Two costs, and only one of them can be completed today. Electricity is small, knowable and yours to calculate from the published 5W draw. Fragrance is the larger cost in any scenting system and is the one currently open. Everything below is arithmetic on manufacturer specifications, not a measurement taken in a building.
| Usage pattern | Hours a day | Electricity arithmetic at 5W | Per month | Fragrance position |
|---|---|---|---|---|
| Arrival window only ★ | 2 hrs | 5W × 2 = 10Wh = 0.01 kWh a day | ≈ 0.3 kWh | 400ml stretches well past the 90-day reference |
| Evenings at home | 4 hrs | 5W × 4 = 20Wh = 0.02 kWh a day | ≈ 0.6 kWh | Comfortably beyond 90 days at a low setting |
| Trading hours | 8 hrs | 5W × 8 = 40Wh = 0.04 kWh a day | ≈ 1.2 kWh | The realistic commercial pattern; 90+ days is the reference |
| Long hospitality day | 12 hrs | 5W × 12 = 60Wh = 0.06 kWh a day | ≈ 1.8 kWh | Expect a fill to fall short of 90 days at higher intensity |
| Continuous | 24 hrs | 5W × 24 = 120Wh = 0.12 kWh a day | ≈ 3.6 kWh | Shortest fill life; use the timers instead unless required |
| The reference figure itself | Manufacturer's mid setting | 400ml ÷ 90 days ≈ 4.4ml a day | ≈ 133ml a month | A division of a stated spec, not a measured consumption rate |
| Multiply by your own tariff | Any | kWh × your per-unit rate = rupees | Varies by state and slab | No electricity bill is being quoted anywhere on this page |
Part five — the whole SOSA range, placed around it
Context matters more than any single specification, so here is everything we sell that puts fragrance into air, with the job each was designed for and — the column most comparisons omit — whether its fragrance supply is a settled, purchasable thing today.
| Product | Price | Coverage | The job it was built for | Fragrance supply today |
|---|---|---|---|---|
| Reed diffuser 50ml ★ | ₹749–₹849 | One small room | Constant, passive, unpowered — 6–8 weeks on six fibre reeds | Oil-only refills ₹2,399 / 300ml · ₹3,499 / 500ml |
| Reed diffuser 130ml | ₹1,249–₹1,349 | One small room | Same reach, 14–18 weeks — duration, never strength | Same refills; reeds are not sold separately |
| Duo sets | ₹1,498–₹1,598 | Two rooms, no seam | Two bottles paired to share a note across a passage | As above · 2 × 130ml ₹2,498–₹2,598 |
| Boond 300ml | ₹899 | ~150 sq ft | A desk, a bathroom, a bedside — USB, night light, ~6 hrs a fill | Hotel Collection 15ml ₹299 · 100ml ₹999 · 300ml ₹1,799 |
| Sukoon 500ml | ₹1,899 | 270–320 sq ft | One normal room on demand — remote, steady/2H/4H, 16–18 hrs a fill | Same — settled and priced per ml |
| Megh 6L | ₹3,499 | ~215 sq ft | Runtime and winter humidity, ~100 hrs a fill — never a coverage upgrade | Same water-based line |
| Vaayu | ₹11,999 | Up to 1000m³ | A whole open floor, scheduled and locked — undiluted cold-air oil | 400ml in the box · no separate refill sold today |
| Aangan | ₹25,999 | ~8,000–10,000 sq ft | HVAC nebulising for commercial buildings | Commercial — ask SOSA |
| Meenar | ₹38,500 | 12,000–18,000 sq ft | Large commercial scenting | Commercial — ask SOSA |
| Safar | ₹3,999 | Car / travel | Waterless cordless car diffuser | Ask SOSA |
| The honest caveat: two rows deserve a warning label. The Megh at ₹3,499 has a six-litre tank and covers around 215 sq ft — less than the ₹1,899 Sukoon's 270–320 sq ft — so anyone reading tank size as coverage is about to pay ₹1,600 more for less of exactly what they wanted. And the Vaayu is the only row in this table whose fragrance supply column cannot be completed with a price, which is a real consideration and not a footnote. Reed oil goes in no machine; water-based Hotel Collection goes in no reed bottle and no Vaayu; cold-air oil goes only in a Vaayu. | ||||
Part six — who should buy this, and who should not
After a hundred articles the buyer profiles have settled into a fairly short list on each side. Buy it if you have a genuinely open floor above roughly 250 cubic metres — a villa ground floor where hall, living and dining run together, an open-plan whole floor, a double-height space, a showroom, a clinic or a lobby. Buy it if control is the point: a space other people occupy, where the setting has to survive staff and guests, and where 1h/4h/8h/24h scheduling with a key-lock is worth more than raw output. Buy it if the alternative is four or five machines and the real cost you are paying is attention rather than rupees. And buy it if you live somewhere humid and an ultrasonic has made a room damp — a cold-air machine adds no moisture at all, which in a coastal Indian summer is a better argument than strength.
Do not buy it if the problem is one room, and most problems are. A single living room is typically 100–150m³ against a 1000m³ rating, and a Sukoon at ₹1,899 covers 270–320 sq ft with a remote and timers; ₹11,999 ÷ ₹1,899 ≈ 6.3, and two Sukoons at ₹3,798 placed at opposite ends of an open living-dining will usually beat one machine trying to cross it. Do not buy it if your internal doors close, because those rooms need their own source at ₹749–₹849 regardless of what runs in the hall. Do not buy it for runtime or humidity — that is the Megh at ₹3,499, at around 215 sq ft. Do not buy it if you like changing scent every fortnight; 400ml of one oil is a long commitment, and 15ml Hotel Collection bottles at ₹299 are the cheap way to be fickle. And do not buy it if uninterrupted fragrance supply is a condition of the purchase, until you have asked us where that stands.
One thing worth saying that no product page will: the honest ending for most large properties is a hybrid, not a single machine. One unit on the open common floor, reed diffusers in every room behind a door, and nothing at all in the spaces nobody stands in. A villa with a Vaayu at the hall-to-living junction and four 130ml reeds in the bedrooms is ₹11,999 + (₹1,299 × 4 = ₹5,196) = ₹17,195, and it will read as one continuous house in a way that six identical bottles never manage and one heroic machine cannot either. The machine buys you the volume that has no walls; the bottles buy you the rooms that do. Nobody sells that as an upgrade path because it does not sound like one, but it is what the properties that work actually run.
Part seven — the checklist to run before you order
Six things, in order, and none of them takes long. First, measure. Length × width × height in metres for every connected space, minus everything behind a shut door, and compare the total against 1000m³ and against the roughly 150–250m³ band where the decision genuinely turns. Second, decide where it would stand — at the junction where your volumes meet rather than in the middle of the largest one, low and aimed into where people walk rather than up into a void, or wall-mounted out of reach if the space is not yours to supervise. Third, choose the combo: Combo 1 for a property housing strangers, Combo 2 for a warm coastal space, Combo 3 where the interior already has a point of view.
Fourth, ask SOSA the four questions we do not publish — warranty length and terms, spare-part availability, whether an installation service exists for wall or HVAC mounting, and the returns position once fragrance has been opened — and keep the written replies. Fifth, ask the supply question specifically: what is the current position on Vaayu refill oil, and what would you do when the 400ml runs out. If that answer does not satisfy you, the correct response is to wait or to buy down the range, and I would rather you did either than order something you will resent. Sixth, do the arithmetic that is yours to do: take 5W, your daily run hours and your own per-unit tariff, and satisfy yourself that the electricity side is trivial. It is — 0.04 kWh a day over eight hours — and knowing that lets you concentrate on the two things that are not trivial, which are the volume and the supply.
That is the whole guide, and the whole of the hundred articles behind it. Measure in cubic metres. Compare against a volume rating, not a square-footage claim. Subtract every closed door. Buy the smallest thing that covers what remains. Ask what the fragrance costs and whether you can buy it today. Those five sentences would have prevented almost every disappointed email we have ever received about a scent machine, ours or anyone else's, and they are worth more than any specification sheet. If after all of them you are still at three hundred cubic metres of open air with a schedule you need to keep, then the Vaayu is a properly made machine for exactly that, and I would be glad to sell you one.
Versailles
A hundred articles ago I set out to write everything we know about scenting large spaces, and I assumed the cluster would build toward the machine at the top of the range. It did not. It built toward a tape measure. The single most valuable thing in this entire body of writing is the instruction to multiply three numbers together before spending any money, because that one habit reliably sends people to the correct product, and the correct product is more often the ₹1,899 one than the ₹11,999 one.
I trained at ISIPCA in Versailles and came home to Pune to make fragrance for Indian rooms — for 45°C summers, for 85% monsoon humidity, for flats sealed against both, for villas with more air than anyone measures. What I did not expect was how much of the work would turn out to be arithmetic and refusal. Most of my week is spent telling people that a bigger bottle is not a louder one, that a six-litre tank is not more coverage, and that the expensive machine is the wrong shape for their flat.
And I want to end the hundred on the gap rather than the product, because that is the test of whether any of this was honest. We do not currently sell a refill oil for the Vaayu. Four hundred millilitres arrives in the box, it is a generous quantity, and it is not a permanent answer. I would rather write that on the final page of a hundred than let anyone find out in month four. Ask us where it stands before you buy; if the answer is not good enough for your building, buy down the range with my blessing and come back when it is. Everything we make is composed and handmade in small batches in Pune, and a part of every order funds a girl's classroom through Nanhi Kali. You get a building that smells like somewhere someone chose; a girl gets a classroom. After a hundred articles that is still the equation I would want to end on.
Frequently asked questions
- The Airbnb arrival scenting guide and Vaayu with the Hotel Collection for guest experience — the first ninety seconds, and the four fragrances.
- The large Airbnb and villa scenting guide and the large-villa fragrance problems guide — sizing to the property, and diagnosing what is wrong.
- The large open-space fragrance guide and reed to ultrasonic to cold-air: the upgrade ladder — the three compounding problems, and every rung in order.
- Which SOSA system for your room size? and the Vaayu running cost and consumption guide — the room-size map, and the arithmetic in full.
- Cost vs coverage vs convenience — the value case, argued from both sides, and the honest verdict.
- Brand: the SOSA founder story — why an ISIPCA-trained perfumer in Pune would rather sell you a tape measure than a machine.
SOSA Vaayu specifications (verified from the live product page, August 2026): ₹11,999 (the product page displays a rounded ₹12,000). Waterless cold-air nebulisation — pressurised air atomises undiluted fragrance oil into a dry nano-mist; no water, no heat, residue-free. Coverage up to 1000m³, about 2,000–3,000 sq ft. 400ml refillable tank, 90+ days per fill at a mid intensity setting. Bluetooth app plus onboard buttons, 1h / 4h / 8h / 24h timers, adjustable mist intensity, auto-stop and key-lock. Under 38 dB. DC 12V / 1A, 5W. 165 × 80.5 × 215 mm, 0.9 kg, black or white. Freestanding or wall / HVAC mount. CE, RoHS and SGS certified. Ships with four SOSA Hotel Collection fragrances at 100ml each (400ml in total) in one of three combos chosen at checkout. SOSA does not currently sell a separate Vaayu refill oil; the 400ml supplied in the box is the fragrance available at the time of writing, and buyers who need long-term supply should confirm current refill availability with SOSA before purchasing. The cold-air oil supplied with the Vaayu is a different product from the water-based Hotel Collection sold for ultrasonic machines (15ml ₹299 · 100ml ₹999 · 300ml ₹1,799), which must not be used in a Vaayu despite sharing scent names. Other SOSA machines: Boond 300ml ₹899 (~150 sq ft) · Sukoon 500ml ₹1,899 (270–320 sq ft) · Megh 6L ₹3,499 (~215 sq ft — a runtime and humidity machine, not a coverage upgrade) · Aangan ₹25,999 (~8,000–10,000 sq ft) · Meenar ₹38,500 (12,000–18,000 sq ft) · Safar car diffuser ₹3,999. Reed diffusers 50ml ₹749–₹849 (6–8 weeks) · 130ml ₹1,249–₹1,349 (14–18 weeks) · duo sets ₹1,498–₹1,598 · oil-only refills 300ml ₹2,399 / 500ml ₹3,499. Runtime, consumption and coverage figures are manufacturer specifications and vary with intensity setting, run hours, ceiling height, ventilation and season; any per-month or per-day figure in this guide is arithmetic on those specifications, not a measurement. Electricity costs vary by state tariff. No claim is made that scenting affects ratings, reviews, bookings, occupancy, revenue, health, mood or air quality. Free shipping above ₹499. A portion of every order supports girl-child education through Nanhi Kali. Prices subject to change — see the live product pages.