★ SOSA Vaayu · six qualifying questions
A checklist that is designed to fail more people than it passes, because most large-sounding homes are solved by a machine costing a sixth as much
★ ★ ★ ★ ★
★★★★★
"I failed three of the six and did not buy. A brand that publishes a test you can fail is a brand I now trust with smaller purchases."
No purchase · two Sukoons instead
★★★★★
"Measuring the connected volume took twenty minutes and changed the answer completely. My open plan was 96 cubic metres."
Measured before buying
★★★★★
"Question six is the one nobody else asks. I rang, got a straight answer about refill supply, and went ahead with my eyes open."
Vaayu ₹11,999
★★★★★
"Six shut doors in a 3,000 sq ft villa meant the machine could only ever do the common floor. That was still worth it for us."
Villa · hybrid with reeds
★★★★★
"The socket question sounds trivial until you realise the only place the machine should stand has no power near it."
Wall mount instead
★★★★★
"Passed five, failed one, bought it, and it does what the page said. No surprises is the highest compliment I have."
Weekend property
★★★★★
"I failed three of the six and did not buy. A brand that publishes a test you can fail is a brand I now trust with smaller purchases."
No purchase · two Sukoons instead
★★★★★
"Measuring the connected volume took twenty minutes and changed the answer completely. My open plan was 96 cubic metres."
Measured before buying
★★★★★
"Question six is the one nobody else asks. I rang, got a straight answer about refill supply, and went ahead with my eyes open."
Vaayu ₹11,999
★★★★★
"Six shut doors in a 3,000 sq ft villa meant the machine could only ever do the common floor. That was still worth it for us."
Villa · hybrid with reeds
★★★★★
"The socket question sounds trivial until you realise the only place the machine should stand has no power near it."
Wall mount instead
★★★★★
"Passed five, failed one, bought it, and it does what the page said. No surprises is the highest compliment I have."
Weekend property
✓ Vaayu · up to 1000m³ · 400ml tank · 90+ days a fill · timers, key-lock · under 38 dB · 5W ✓ 400ml in the box is exactly one tankful — no separate cold-air refill oil is sold today ✓ Sukoon ₹1,899 · 270–320 sq ft · Boond ₹899 · reed diffusers from ₹749
Founder Diaries · Large-Space Scenting · Qualification Checklist
The scoring: six yeses, buy it. One no, buy it. Two noes, think hard. Three or more noes, do not buy it — a Sukoon at ₹1,899 or two reed diffusers will serve you better.
The question nobody asks: SOSA does not currently sell a separate Vaayu refill oil. The 400ml in the box — four cold-air fragrances at 100ml each — is exactly one full tank and the whole supply available today.
The specification you are buying: up to 1000m³, 400ml tank, 90+ days a fill, 1h / 4h / 8h / 24h timers, adjustable intensity, key-lock, under 38 dB, 5W.
Reed duofrom ₹1,548Floor plans are optimistic; households are not. Walk the property at nine in the evening and count the doors that are actually shut — bedrooms, the study, the guest room, the utility. No coverage rating crosses a closed door, at any price. A villa of 3,000 sq ft with six closed bedrooms is not a 3,000 sq ft scenting problem; it is a common-floor problem plus six small independent ones. That does not disqualify the machine — the hybrid of one Vaayu on the connected common area plus a reed diffuser from ₹749 behind each shut door is what most large homes settle into — but it does change the volume figure you should be using in question one. Re-measure with the doors as they really are, and answer question one again with that number.
Vaayu · five or six yeses₹11,999Shop → 
Sukoon · failed on volume₹1,899Shop → 
Reed duo · failed on doorsfrom ₹1,548Shop →
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.
₹11,999 is a serious amount of money in an Indian home, and I would rather you kept it than spent it on a machine that turns out to be answering a question your house was not asking. So this page is a test rather than a sales argument. Six questions, each answerable in a few minutes with a tape measure and one phone call. Answer no to more than two of them and you should not buy a Vaayu — and I have written the alternatives into the back half of the page, because failing this checklist is a good outcome, not a dead end.
Quick answers — read this first
The six questions: connected volume · closed doors · control · power and placement · have you exhausted the cheaper rung · and the refill gap.The scoring: six yeses, buy it. One no, buy it. Two noes, think hard. Three or more noes, do not buy it — a Sukoon at ₹1,899 or two reed diffusers will serve you better.
The question nobody asks: SOSA does not currently sell a separate Vaayu refill oil. The 400ml in the box — four cold-air fragrances at 100ml each — is exactly one full tank and the whole supply available today.
The specification you are buying: up to 1000m³, 400ml tank, 90+ days a fill, 1h / 4h / 8h / 24h timers, adjustable intensity, key-lock, under 38 dB, 5W.
The short answer
Short answer: the Vaayu is the right upgrade if your connected volume is genuinely large, your space is genuinely open, you need scent on a schedule rather than constantly, you have power at the position that actually works, you have already exhausted a cheaper rung, and you are comfortable buying with the refill question open. Six yeses is a clear purchase. Three noes is a clear no. Most people who reach this page score somewhere in between, and for them the honest advice is to fix the failed question first and re-run the test rather than to spend.
The mechanism you are paying for: waterless cold-air nebulisation — pressurised air atomises undiluted oil into a dry nano-mist, so the payload is fragrance rather than water and the room's own currents carry it. That is a change of category from a reed diffuser or an ultrasonic, not a bigger version of either, and it is what buys a coverage rating of up to 1000m³ against 270–320 sq ft.
Shop: Vaayu ₹11,999 · Sukoon ₹1,899 (270–320 sq ft) · Boond ₹899 (~150 sq ft) · reed duo sets from ₹1,548 · reed diffusers from ₹749. Free shipping above ₹499.
In this guide
If you pass the checklist
Vaayu cold-air · ₹11,999
If you fail on volume
Sukoon 500ml · ₹1,899
If you fail on doors
Reed duo sets · from ₹1,548
Straight answer
How do I know whether a SOSA Vaayu is right for my space?
Question 1 — is your connected volume genuinely large? Length × width × ceiling height in metres, for every zone with no shut door between it and the next, added together. In feet, multiply the three and divide by 35.3. A yes is roughly 100m³ and upward. Under that, this machine is rated for many times what you have.
Question 2 — does the space stay open? A shut door is a wall and no coverage rating crosses one. A yes means the volume you measured is genuinely connected in daily life, not only on the floor plan.
Question 3 — do you need it on a schedule? Timers of 1h / 4h / 8h / 24h, adjustable intensity, auto-stop and a key-lock so nobody else can change the setting. If constant background scent is all you want, a reed diffuser does that for ₹749 and needs no electricity.
Question 4 — is there power where the machine should actually stand? Low, in the traffic path, at a junction rather than in a corner. The unit runs on DC 12V / 1A at 5W and can be freestanding or wall / HVAC mounted. A yes means the right position and a socket are the same place, or you are able to mount.
Question 5 — have you exhausted the cheaper rung? Free placement fixes, then a Sukoon at ₹1,899 or two reed diffusers at opposite ends. A yes means you know from experience, not from theory, that the problem is category rather than placement.
Question 6 — can you live with the refill gap? SOSA does not currently sell a separate Vaayu refill oil. The box contains four Hotel Collection cold-air fragrances at 100ml each — 400ml, which is exactly one full tank — and at 90+ days a fill that is a long run but a finite one. The water-based Hotel Collection sold for ultrasonic machines is a different product and must not be used in it. A yes means you have asked SOSA about current availability and are content either way.
The scoring. Six yeses: buy it. One no: buy it, with the failed item planned around. Two noes: think hard and fix one first. Three or more noes: do not buy it. There is no version of this machine that becomes right for a space it is not right for.
Composed and handmade in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
Question 2 — does the space stay open? A shut door is a wall and no coverage rating crosses one. A yes means the volume you measured is genuinely connected in daily life, not only on the floor plan.
Question 3 — do you need it on a schedule? Timers of 1h / 4h / 8h / 24h, adjustable intensity, auto-stop and a key-lock so nobody else can change the setting. If constant background scent is all you want, a reed diffuser does that for ₹749 and needs no electricity.
Question 4 — is there power where the machine should actually stand? Low, in the traffic path, at a junction rather than in a corner. The unit runs on DC 12V / 1A at 5W and can be freestanding or wall / HVAC mounted. A yes means the right position and a socket are the same place, or you are able to mount.
Question 5 — have you exhausted the cheaper rung? Free placement fixes, then a Sukoon at ₹1,899 or two reed diffusers at opposite ends. A yes means you know from experience, not from theory, that the problem is category rather than placement.
Question 6 — can you live with the refill gap? SOSA does not currently sell a separate Vaayu refill oil. The box contains four Hotel Collection cold-air fragrances at 100ml each — 400ml, which is exactly one full tank — and at 90+ days a fill that is a long run but a finite one. The water-based Hotel Collection sold for ultrasonic machines is a different product and must not be used in it. A yes means you have asked SOSA about current availability and are content either way.
The scoring. Six yeses: buy it. One no: buy it, with the failed item planned around. Two noes: think hard and fix one first. Three or more noes: do not buy it. There is no version of this machine that becomes right for a space it is not right for.
Composed and handmade in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
TL;DR: measure the connected volume, count the shut doors, decide whether you need a schedule, find the socket, exhaust the cheaper rung, and ask SOSA about refill supply — because no separate cold-air refill oil is sold today and the 400ml in the box is one tankful. More than two noes and the answer is a Sukoon at ₹1,899 or reeds from ₹749.
What ₹11,999 actually buys
SOSA Vaayu · waterless cold-air nebuliser ₹11,999
Pressurised air atomises undiluted fragrance oil into a dry nano-mist — no water, no heat, no wet residue. Rated up to 1000m³, roughly 2,000–3,000 sq ft depending on ceiling height. 400ml refillable tank, 90+ days a fill. Bluetooth app plus onboard buttons, 1h / 4h / 8h / 24h timers, adjustable mist intensity, auto-stop and key-lock. Under 38 dB, DC 12V / 1A at 5W, 165 × 80.5 × 215 mm, 0.9 kg, black or white, freestanding or wall / HVAC mounted. CE, RoHS and SGS certified, made in India. Four Hotel Collection cold-air fragrances at 100ml each in the box, in one of three combos chosen at checkout. No separate Vaayu refill oil is currently sold — ask SOSA about availability before you commit.
Part one — the three questions that are about your building
Three of the six questions are structural: they are about the house rather than about you, they cannot be changed by preference, and a no to any of them is expensive to argue with. Answer these three honestly before you read the rest of the page, because two noes here is effectively a fail on its own. Each takes about ten minutes with a tape measure and a walk through your own home at the time of day when it matters.
1
QUESTION ONE · VOLUME
Is your connected volume genuinely 100m³ or more?
Not square feet — cubic metres, because you are scenting air and air is three-dimensional. Multiply length by width by ceiling height for every zone with no shut door between it and the next, and add the zones together; if you work in feet, multiply the three dimensions and divide by 35.3. A 7.5 m × 6 m living-dining under a 3 m ceiling is 135m³, and the same footprint under a six-metre double-height void is 270m³ — the same floor plan, twice the air. Open stairwells behave as chimneys and join floors into one volume, so count them. The Vaayu is rated up to 1000m³; a home measuring 60 or 80m³ is not a small version of that, it is a different order of problem, and the machine will simply be run at its lowest setting for the rest of its life. This is the question people most often answer from impression rather than measurement, and it is the one that decides the purchase.
A no here: under about 100m³ the honest answer is a Sukoon at ₹1,899, and you keep ₹10,100.
2
QUESTION TWO · DOORS
Does the space you measured stay open in daily life?
Reed duofrom ₹1,548Floor plans are optimistic; households are not. Walk the property at nine in the evening and count the doors that are actually shut — bedrooms, the study, the guest room, the utility. No coverage rating crosses a closed door, at any price. A villa of 3,000 sq ft with six closed bedrooms is not a 3,000 sq ft scenting problem; it is a common-floor problem plus six small independent ones. That does not disqualify the machine — the hybrid of one Vaayu on the connected common area plus a reed diffuser from ₹749 behind each shut door is what most large homes settle into — but it does change the volume figure you should be using in question one. Re-measure with the doors as they really are, and answer question one again with that number.
A no here: your problem is several small rooms, and several inexpensive sources is the cheaper, better architecture.
3
QUESTION FOUR · POWER AND POSITION
Is there power where the machine should actually stand?
The right position for a cold-air machine in a large space is low and central to the traffic — at the junction where the hall, the passage and the living-dining meet, at roughly waist to chest height, aimed horizontally into the zone where people move rather than upward into a void. That is rarely where an Indian home has a spare socket. The unit is small and light — 165 × 80.5 × 215 mm and 0.9 kg — and runs on DC 12V / 1A at 5W, so it can be freestanding, wall-mounted or HVAC-mounted, which gives you options a bulkier machine would not. Two honest footnotes. Most Indian homes, including large ones, run split and cassette air conditioners rather than ducts, so the HVAC-mount route is simply unavailable to most people. And electricity is trivial: 5W running eight hours a day is 0.04 kWh a day, about 1.2 kWh a month — that is arithmetic on the stated wattage, tariffs vary by state, and I am not quoting anyone a bill.
Part two — the full checklist, and how to score it
All six questions in one place, with what a genuine yes looks like and what a no actually tells you about your situation. Be strict with yourself in the second column; the point of a checklist is that it can be failed.
The qualification checklist
Six questions · more than two noes and you should not buy
| # | The question | What a genuine yes looks like | What a no tells you |
|---|---|---|---|
| 1 ★ | Is your connected volume roughly 100m³ or more? | You measured it — l × w × h per zone, added, doors as they really are | The space is a Sukoon-sized problem, not a Vaayu-sized one |
| 2 | Does that space stay genuinely open? | Two or fewer doors shut on an ordinary evening | You have several small problems, not one big one |
| 3 | Do you need scent on a schedule, at a set intensity, locked? | Timed runs before arrivals; a key-lock matters to you | You want constant background — that is what a reed diffuser is |
| 4 | Is there power at the position that actually works? | A socket low and in the traffic path, or you can wall-mount | The machine will end up in a corner, where it will underperform |
| 5 | Have you exhausted the free fixes and the cheaper rung? | You have run a Sukoon or two reed bottles and hit a real ceiling | You may be buying a placement problem an expensive solution |
| 6 | Can you live with the refill gap? | You have asked SOSA about current cold-air refill availability and are content either way | Wait, and ask, before you spend ₹11,999 |
| The scoring, and the honest caveat: six yeses — buy it. One no — buy it and plan around the gap. Two noes — fix one of them and re-run the test. Three or more noes — do not buy it, because nothing about the machine changes to suit a space it does not suit. On question six specifically: SOSA does not currently sell a separate Vaayu refill oil. The box holds four cold-air Hotel Collection fragrances at 100ml each, 400ml in total, which is exactly one full tank; at 90+ days a fill that is roughly three months of running per tankful, and running one 100ml bottle at a time works out at roughly 22 days each — arithmetic on the stated specification, varying with intensity setting and run hours. The water-based Hotel Collection at ₹299 / ₹999 / ₹1,799 is for ultrasonic machines, shares scent names, and must never be used as a Vaayu refill. | |||
Shop this guide
Pass, borderline, fail — the three destinations
Vaayu · five or six yeses₹11,999Shop → Sukoon · failed on volume₹1,899Shop → Reed duo · failed on doorsfrom ₹1,548Shop →
The SOSA principle
A checklist worth publishing is one you can fail.
If every question on this page were written so that a hopeful reader could answer yes, it would be an advertisement. Three noes is a real result, it is the commonest result, and the money you keep is the point of it.
Part three — what to do when you fail, question by question
Failing question one is the most common outcome and the easiest to act on. If your connected volume came out at 60 or 90 cubic metres — and a great many homes described as open-plan do — then the machine you want is a Sukoon at ₹1,899, rated 270–320 sq ft, with 16–18 hours on low from its 500ml tank, a remote, steady / 2H / 4H timers and three 15ml Hotel Collection scents in the box. That is a sixth of the price for a machine that will spend its life comfortably inside its rating rather than at the bottom of someone else's. Failing question two — too many shut doors — points to a hybrid: one modest machine for the connected part, a reed diffuser from ₹749 in each closed room, chosen for that room rather than for the house. Where two compositions will meet at an open threshold, make them share a note: Mountain Breeze and Morning Freshness meet on green eucalyptus, Fresh Brew and Garden Bloom on warmth.
Failing question three means you want constant rather than scheduled, and constant is what the passive format was built for — a reed diffuser cannot be switched on, which is a limitation for a host and a virtue in a home. Failing question four is worth pausing on rather than dismissing, because a machine in the wrong position is the most reliable way to be disappointed by a good product: if the only socket is in a far corner, either solve the power or reconsider the purchase. Failing question five is the one I would push back on hardest. In my correspondence, three out of four "I need something bigger" letters are placement, adaptation or an unflipped bottle, and those cost nothing: move the source into gentle passing air near a doorway at waist-to-chest height, several feet clear of an AC jet; close the room for the hour that matters; flip all six reeds weekly. Your own nose is the least reliable witness in the house, because it stops reporting a constant within minutes — ask someone who has just walked in.
Failing question six is different from the rest, because it is not about your building at all. It is about supply, and it is the thing I most want a buyer at this price to hold in their hand before deciding. SOSA does not currently sell a separate Vaayu refill oil. The 400ml in the box is the whole cold-air fragrance supply available today; the reed range has a comparable honest gap in that we do not sell replacement reeds separately, and I would rather name both than let either be discovered after the money has moved. Ring or write and ask what is available on the day you order. And be clear on the boundary that applies to every product on this page while you decide: a scent machine adds fragrance and nothing else — it does not clean, filter or remove anything, and ventilation comes first, fragrance second. As for the running cost of the hardware itself, ₹11,999 spread over three years is about ₹11 a day, which is arithmetic on the price alone and takes no account of fragrance; warranty length, AMC, installation and spare parts are not things I can state here, so ask SOSA about those too.
If a checklist cannot be failed, it is not a checklist. Three noes is a real answer, and usually the right one.
— Sonal Sahani, SOSA
Part four — the alternative for each failed question
Read down the first column to the question you failed, and across to what actually solves it. Every row except the last costs less than a fifth of ₹11,999.
The alternatives edit
What to buy when the checklist says no
| The question you failed | What that means about your space | Buy this instead | Price |
|---|---|---|---|
| 1 · Volume under ~100m³ ★ | One normal room, or an open plan smaller than it feels | Sukoon — 270–320 sq ft, timers, remote | ₹1,899 |
| 2 · Too many shut doors | Several small independent problems, not one large one | A reed duo plus single bottles per room | From ₹1,548 · singles from ₹749 |
| 3 · You want constant, not scheduled | Background scent is the job; control is not | Mountain Breeze or Fresh Brew, six fibre reeds | ₹849 · 130ml ₹1,349 |
| 4 · No power at the right position | The machine would live in a backwater | A passive source at the junction instead — no socket needed | From ₹749 |
| 5 · You have not tried the cheaper rung | Possibly a placement problem wearing a category costume | Free fixes first, then Boond or Sukoon | Free · then ₹899 or ₹1,899 |
| 6 · The refill gap is a problem for you | You need assured long-term supply | Wait and ask SOSA — do not substitute anything | No purchase today |
| You want long unattended runtime in one room | A runtime need, not a coverage need | Megh 6L — ~100 hrs, ~215 sq ft, less than the Sukoon | ₹3,499 |
Honest notes for buyers: coverage, runtime, tank and power figures are manufacturer specifications and vary with intensity setting, run hours, ceiling height, furnishing, ventilation and season; every calculation on this page — cubic metres, days per tank, kWh per month, rupees per day — is arithmetic on those specifications or on listed prices, not a measurement in your home, and electricity tariffs vary by state. SOSA does not currently sell a separate Vaayu refill oil: the 400ml supplied in the box is the whole cold-air fragrance supply at the time of writing, and buyers who need long-term supply should confirm availability with SOSA before purchasing. The water-based Hotel Collection is a different product for ultrasonic machines and must not be used in a Vaayu; reed oil goes in no machine. Reed refills are oil only and replacement reeds are not sold separately, though we advise refreshing them every few months. Reed range gaps: no oud, no musk-forward scent, no aquatic. Reed strength ratings are positions on SOSA's own internal scale at six reeds. Warranty length, AMC, installation service, spare parts and app platform details are not something I can state here — ask SOSA. Stand reed bottles on a tray, keep everything away from children and pets and out of direct sunlight. No health, air-purification or odour-removal claim is made or implied. Free shipping above ₹499, and a portion of every order supports girl-child education through Nanhi Kali.
Where most people who fail this test should go
SOSA Sukoon · 500ml ultrasonic ₹1,899
If your connected volume came out under about 100 cubic metres, this is the machine that fits it rather than dwarfs it. 270–320 sq ft, 16–18 hours on low from 500ml, remote plus steady / 2H / 4H timers, and three 15ml Hotel Collection fragrances in the box so you can find your register before buying a larger bottle. It answers the control question — the room can be scented before people arrive rather than continuously — for a sixth of the price of a cold-air machine. It runs on water, so it adds humidity to the room, which is worth knowing on a humid coast in August. ₹10,100 not spent is the real feature.
SS
ISIPCA
Versailles
Versailles
A note from Sonal
We sell the Vaayu, so a page whose whole purpose is to stop some people buying it needs explaining. The explanation is commercial as well as ethical: an ₹11,999 machine bought for a 500 sq ft flat becomes a complaint, a return, or worse, a quiet resentment that ends a customer relationship. I would much rather sell that household a ₹1,899 Sukoon they are delighted with and keep them for a decade. The checklist is not modesty. It is the version of this business I actually want.
Question six is the one I insisted on, over some internal disagreement. Right now we ship 400ml of cold-air fragrance with the machine and we do not sell a separate refill for it. That is a real gap, exactly like the replacement reeds we do not sell for the diffuser range, and there is a strong temptation to leave it out of a buying guide and let people find out later. I do not think a brand survives doing that twice. So it is question six, it is in the checklist rather than a footnote, and the instruction is to ring us and ask what is available on the day you order.
If you passed five or six, the machine is a genuine pleasure in the right house — quiet at under 38 dB, small enough to disappear on a shelf, and doing something no reed diffuser or ultrasonic can do at that scale. Run it low, on a timer, aimed into the traffic rather than into a void. If you failed three, please spend the two thousand instead and write to me if it does not work; I would rather have that letter than the other one. 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.
Frequently asked questions
How large does a space need to be to justify a Vaayu?
Roughly 100 cubic metres of genuinely connected volume and upward — that is about 1,000 sq ft under a three-metre ceiling, with the doors as they really are on an ordinary evening. The machine is rated up to 1000m³, about 2,000–3,000 sq ft depending on ceiling height. Below 100m³ a Sukoon at ₹1,899 fits the space rather than dwarfing it.
Can I buy more Vaayu fragrance oil later?
Not at the time of writing. SOSA does not currently sell a separate Vaayu refill oil. The machine ships with four Hotel Collection cold-air fragrances at 100ml each — 400ml, which is exactly one full tank, rated at 90+ days a fill. The water-based Hotel Collection for ultrasonic machines is a different product and must not be substituted. Ask SOSA what is available before you buy if long-term supply matters to you.
Will one Vaayu scent my whole house?
Only the connected part of it. A shut door is a wall and no coverage rating crosses one, so a large home with six closed bedrooms is a common-floor problem plus six small independent ones. The arrangement most such houses settle into is one machine on the connected common area and an inexpensive reed diffuser from ₹749 behind each closed door.
How much does it cost to run?
The electricity is negligible: at DC 12V / 1A and 5W, eight hours a day is 0.04 kWh a day, roughly 1.2 kWh a month — arithmetic on the stated wattage, and tariffs vary by state, so that is not a bill. The fragrance is the real running cost, and it is the open question: 400ml in the box at 90+ days a fill, with no separate refill currently sold. The hardware itself works out at about ₹11 a day over three years, arithmetic on the price alone.
What if I answer no to exactly two questions?
That is the borderline result and the honest advice is to fix one of the two and re-run the test rather than to buy. If the two noes are volume and shut doors, the answer is almost certainly no. If they are the cheaper-rung question and the refill question, both are fixable — run a Sukoon for a season and ring SOSA about supply, then decide with two more facts than you have now.
Vaayu qualification checklist · 2026
Six questions. More than two noes and the honest answer is do not buy it
SOSA Vaayu ₹11,999 — waterless cold-air nebulisation of undiluted oil, up to 1000m³ (about 2,000–3,000 sq ft depending on ceiling height), 400ml tank rated at 90+ days a fill, Bluetooth app and onboard control with 1h / 4h / 8h / 24h timers, adjustable intensity, auto-stop and key-lock, under 38 dB on 5W, 0.9 kg, freestanding or wall / HVAC mounted, CE / RoHS / SGS certified, four cold-air Hotel Collection fragrances at 100ml each in the box. No separate Vaayu refill oil is sold at the time of writing — ask SOSA before you commit. If you failed the checklist: Sukoon ₹1,899 for 270–320 sq ft, Boond ₹899 for ~150 sq ft, reed diffusers from ₹749 and duo sets from ₹1,498. Free shipping above ₹499, and a portion of every order supports girl-child education through Nanhi Kali.
See the Vaayu → Sukoon ₹1,899
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Before you decide
- When should you upgrade from a reed diffuser? and when should you leave an ultrasonic? — the two trigger pages.
- Best strong fragrance diffuser for large spaces and what gives the strongest scent throw.
- My reed diffuser isn't strong enough — what should I buy? — the free ladder, first.
- Reed → ultrasonic → cold-air: the complete upgrade guide — the whole ladder on one page.
- Brand: the SOSA founder story.
Editorial standards & sources
About this guide: Written by Sonal Sahani, ISIPCA Versailles-trained founder and perfumer at SOSA Home & Body, as a qualification test for a ₹11,999 purchase. The six questions and the scoring rule are SOSA's own working framework from in-house testing and customer correspondence, not a standard of any kind. Volume, coverage, runtime, tank and power figures are manufacturer specifications; unit conversions use 1 cubic metre ≈ 35.3 cubic feet, and every calculation shown — cubic metres, days per tank, kWh per month, rupees per day — is arithmetic on stated specifications or listed prices rather than a measurement, with electricity tariffs varying by state. Warranty, AMC, installation, spare parts and app platform availability are not stated here because they are not verified. No health, wellness, air-purification or odour-removal claim is made or implied.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.