Why the Vaayu is quoted as a range: 1000m³ is 35,300 cu ft. Divide by a 10 ft ceiling and you get 3,530 sq ft; by 12 ft, 2,942; by 18 ft, 1,961 — which is exactly why the honest figure is "about 2,000 to 3,000" (arithmetic, 1m³ ≈ 35.3 cu ft).
The number that is not on the map: tank size. The 6L Megh at ₹3,499 covers about 215 sq ft — less than the ₹1,899 Sukoon. It buys runtime and humidity, never reach.
Before you buy the top of the map: SOSA does not currently sell a separate Vaayu refill oil. The 400ml in the box is the whole cold-air supply available today.
- The straight answer
- Part one — turning a home into three numbers
- Part two — the complete room-size map
- Part three — the three bands people misread
- Part four — what changes the answer besides size
- Part five — the same house at five budgets
- Part six — the honest limits of each system
- A note from Sonal
- FAQs
2. Multiply by ceiling height and convert. Area in sq ft × height in ft ÷ 35.3 = cubic metres. This matters because the top of the range is specified in volume: the Vaayu is rated to 1000m³, and the same rating maps to 3,530 sq ft at a 10 ft ceiling but only 1,961 sq ft at 18 ft (arithmetic on 35,300 cu ft).
3. Read your band. Under 150 sq ft — a reed diffuser from ₹749, or a Boond at ₹899 if you want a switch. 150–320 sq ft — a Sukoon at ₹1,899. 320–800 sq ft — two or three Sukoons at opposite ends, ₹3,798 to ₹5,697. Above 800–1,000 sq ft connected, or any serious double height — the Vaayu at ₹11,999.
4. Give every closed room its own source. This is the rule that saves the most money and is followed the least. A closed door is a wall to fragrance, so bedrooms, bathrooms and studies each need something of their own, and a ₹749 bottle is the cheapest and least intrusive thing that qualifies. No machine, at any price, reaches through a door.
5. Do not read tank size as coverage. The 6L Megh at ₹3,499 covers about 215 sq ft, which is less than the ₹1,899 Sukoon's 270–320. Its six litres buy roughly 100 hours of runtime and a good deal of humidity. Buy it for those and never for a bigger room.
6. Spend the free levers before any of it. Get the source off the floor to roughly waist or chest height, put it where people walk past rather than in a dead corner, keep it clear of a split AC's direct blast and out of direct sun, and flip reeds weekly. A well-placed ₹1,899 machine beats a badly placed ₹11,999 one.
7. Check the consumable before the machine. Reed oil refills are stocked at ₹2,399 for 300ml and ₹3,499 for 500ml, though replacement reeds are not sold separately. The water-based Hotel Collection for ultrasonics is stocked at ₹299 / ₹999 / ₹1,799. SOSA does not currently sell a separate Vaayu refill oil — the 400ml supplied in the box is the cold-air supply available today, and the Hotel Collection is a different product that must not go in it. Confirm the position with SOSA before buying if that matters to you.
Nothing in this range purifies air, removes a smell or affects health or mood; every product here adds fragrance and does nothing else. Ventilate first, and never diffuse over live cooking. Reeds are composed and handmade in small batches in Pune, the machines are made in India, free shipping applies above ₹499, and a portion of every order supports girl-child education through Nanhi Kali.
Part one — turning a home into three numbers
A floor plan is not the input this decision needs, and neither is a sense of how the room feels. Fragrance responds to a volume of air, to the openings that let that air move, and to nothing else about your house. So the exercise is to reduce a home to three numbers, in this order, because each one modifies the last. It takes about twenty minutes with a tape measure and it is the single highest-return thing anyone reading this cluster can do — more useful than any comparison, including the ones I have written.
SOSA Vaayu₹11,999 · 1000m³Multiply your connected area by the ceiling height in feet, then divide by 35.3 to get cubic metres. This step exists because the Vaayu is rated to 1000m³, a volume, and the product page's "about 2,000 to 3,000 sq ft" is a translation rather than a specification. Here is the arithmetic behind that translation: 1000m³ is 35,300 cu ft; at a 10 ft ceiling that is 3,530 sq ft of floor, at 12 ft it is 2,942, and at an 18 ft double height it is 1,961. Same machine, same rating, and the honest floor figure nearly halves. The same arithmetic run on your own house explains a great deal of past disappointment: a 320 sq ft room at 10 ft is 90.6m³, but open that room into a double-height void at 18 ft and it becomes 163m³ — the floor plan has not changed and the job has grown by eighty per cent.Part two — the complete room-size map
Your three numbers, read against every product in the range. The last column is the one I would read first: what that choice will not do, stated before you buy rather than after.
| Connected size | Typical space | The system | Price | The limit you are accepting |
|---|---|---|---|---|
| 270–320 sq ft ★ | A 16 × 20 ft living room, doors shut | Sukoon — the band most homes land in | ₹1,899 | It adds humidity, and it stops at the door |
| Under 60 sq ft | Bathroom, cloakroom, wardrobe | 50ml reed diffuser, four reeds instead of six | From ₹749 | Constant only — there is no switch |
| 60–150 sq ft | Bedroom, study, nursery | Reed diffuser, or Boond if you want a switch | ₹749–₹899 | The Boond runs about 6 hrs a fill from 300ml |
| 150–270 sq ft | 2BHK living room, small living-dining | Sukoon, comfortably inside range | ₹1,899 | One room only; bedrooms still need their own |
| Any size, but you want ~100 hrs unattended | Studio, waiting room, shop floor | Megh — 6L, runtime and humidity | ₹3,499 | Only ~215 sq ft — less ground than the Sukoon |
| 320–500 sq ft | Living opening onto dining through an arch | Two Sukoons, opposite ends | ₹3,798 | Two tanks to fill instead of one |
| 500–800 sq ft | Living, dining and open kitchen as one run | Two or three Sukoons — or a Vaayu if the ceiling is high | ₹3,798–₹5,697 | Evenness takes placement work you will have to do |
| 800–1,400 sq ft connected | Villa ground floor, open stairwell | Vaayu — up to 1000m³ | ₹11,999 | One identity across the whole floor, and no refill oil sold today |
| 320 sq ft at an 18 ft double height | Farmhouse living room with a full-height void | Vaayu — the floor area is misleading you | ₹11,999 | 163m³ against 90.6m³ at 10 ft — the air is above your head |
| Above 2,000–3,000 sq ft, or ducted | Hotel lobby, showroom, corporate floor | Aangan ₹25,999 or Meenar ₹38,500 — commercial, HVAC-mounted | Commercial | Not a home purchase; speak to SOSA directly |
| The honest caveat: these bands assume a furnished room of ordinary proportions with some incidental air movement, and they are guidance from our own testing and customer correspondence rather than laboratory measurement. Two rows deserve rereading. The Megh row is not a coverage row at all — it is in the table by runtime, and its 215 sq ft is genuinely below the Sukoon's, so buy it only for the hundred hours. And the 320–500 band is where most regret is generated: people whose single Sukoon fell slightly short reach for the ₹11,999 machine when the correct answer costs ₹3,798 and works better, because two sources at two ends beat one source in the middle every time. | ||||
Reed diffuser · one closed roomfrom ₹749Shop → Sukoon · 270–320 sq ft₹1,899Shop → 
Vaayu · up to 1000m³₹11,999Shop →
Part three — the three bands people misread
The map above is not difficult, and yet three of its bands generate nearly all the wrong purchases I hear about. The first is the 150 to 270 band, where people over-buy. A bedroom or a modest living room is comfortably inside a ₹899 Boond or a ₹1,899 Sukoon, and yet this is the band where the ₹3,499 six-litre machine most often gets ordered, because the room feels stubborn and six litres feels like commitment. It is not a coverage problem; it is usually a placement problem. The machine is on the floor behind a sofa, or directly under a split AC that shreds the plume before it distributes. Move it to a console at waist or chest height, near a doorway where people pass, several feet clear of the AC's throw, and the room you thought needed a bigger machine will behave. That correction costs nothing and I would try it before any purchase in this cluster.
The second is the 320 to 500 band, which I think of as the dead zone. One Sukoon covers to 320 sq ft; a connected living-dining of 420 sq ft is therefore slightly short, and the instinct is to jump categories. The arithmetic says otherwise: a second Sukoon costs ₹1,899 and takes the pair to ₹3,798, which is 32% of the Vaayu's price (arithmetic on list prices), and it delivers something the single expensive machine cannot — two sources at two ends. A single point source in the middle of an L-shaped or through-plan space always leaves the far corner weakest, no matter how much propulsion it has, because the geometry is against it. Two modest sources at opposite ends give you an even room. The only real cost is labour: two 500ml tanks to fill rather than one 400ml tank every three months, which is a genuine consideration and the honest reason some people in this band should still buy the machine.
The third is any band at all when the ceiling is high, because the floor area stops being informative. This is the band that catches villa and farmhouse owners, and it catches them precisely because their rooms are beautiful. A 320 sq ft living room with a 10 ft ceiling is 90.6m³; the same room open to an 18 ft void is 163m³ (arithmetic, 1m³ ≈ 35.3 cu ft). Nothing on the floor plan has changed. What has changed is that most of your new air sits above head height, where fragrance disperses and where nobody is standing — which is why double-height rooms defeat reed diffusers and ultrasonics so comprehensively, and why they are one of the few situations in which I would recommend the ₹11,999 machine for a modest-looking floor area. If your living room has a gallery, a mezzanine, a stairwell open at the top or a full-height glass wall, do the cubic-metre sum before you do anything else.
Part four — what changes the answer besides size
Size sets the band; four other things can move you out of it, and it is worth knowing which of them applies to you before you commit. The first is control, and for anyone with guests it may outrank size entirely. A reed diffuser cannot be turned on — it is a constant, which is a virtue in a family home and a limitation in a property that needs to be scented at four in the afternoon before an arrival. A Sukoon's remote gives steady, 2H and 4H modes and requires a hand in the room. The Vaayu gives app and onboard control, 1h / 4h / 8h / 24h timers, adjustable intensity, auto-stop and a key-lock, which is the feature that separates a home machine from one in a property full of strangers. I cannot tell you which platforms the app supports or what the warranty covers — those are questions for SOSA rather than things I will guess at.
The second is climate, and in India it is not a footnote. Every ultrasonic works by putting water vapour into a room; the fragrance rides on it. In a dry Delhi or Jaipur winter that is a bonus some people actively want, and it is the honest reason to consider the 6L Megh at ₹3,499 despite its modest 215 sq ft. In a sealed coastal flat in August it is the opposite, and a family in Mumbai, Kochi or Chennai may reasonably move to reeds or to the waterless Vaayu for that reason alone rather than for reach. That is a physical observation about what the machines put into the air, and nothing more — no product here affects air quality, health or mood, and none of them removes an existing smell. If something smells wrong, the extractor and the windows fix it and fragrance goes on afterwards; never diffuse over live cooking, because fragrance layered onto cooking makes a third smell nobody designed.
The third is power and place, which quietly decides half of a large house. Every machine needs a socket; the Vaayu runs on DC 12V / 1A at 5W and can be freestanding or wall or HVAC mounted, but it must be plugged in somewhere that does not look like an accident. The spaces in a large home that smell of nothing are usually the ones with no socket at all — corridors, landings, alcoves, cloakrooms, the puja corner. Those are reed-diffuser spaces permanently, and no budget changes that. The fourth is supply, and it is the one I would weigh hardest at the top of the range. Reed oil refills are stocked at ₹2,399 for 300ml (about 8–11 months) and ₹3,499 for 500ml (about 14–18 months), at roughly ₹7–8 per ml against ₹15–17 for a fresh 50ml bottle; reeds themselves are not sold separately. The water-based Hotel Collection for ultrasonics is stocked at ₹299, ₹999 and ₹1,799. But SOSA does not currently sell a separate Vaayu refill oil: the machine ships with four 100ml cold-air fragrances, 400ml in total, rated at 90+ days a fill — about 4.4ml a day, arithmetic on the specification — and that is the supply that exists at the time of writing. The Hotel Collection is not a substitute; it is water-based and must not go into that machine despite sharing scent names. If you are planning years ahead, ask SOSA where refill availability stands before you order.
Part five — the same house at five budgets
One four-bedroom house — an open ground floor of about 900 sq ft plus five closed rooms — bought in five different orders. The last column is the one that matters: what stays unscented at each level.
| Budget | What I would buy | What gets scented | What stays unscented |
|---|---|---|---|
| About ₹4,000 ★ | Five 50ml reed diffusers, one per closed room | Every bedroom, bathroom and study, constantly | The open ground floor — the biggest space, untouched |
| ₹749–₹849 | One 50ml reed diffuser in the entrance | The first ten feet anyone meets — the highest-value spot in a house | Everything else, and that is a fair start |
| About ₹1,900 | One Sukoon in the main sitting zone | 270–320 sq ft on demand, before people arrive | The rest of the open floor, and all five closed rooms |
| About ₹5,700 | Three Sukoons across the ground floor | Most of an open floor, unevenly but usably | Closed rooms; and three tanks now need filling |
| ₹11,999 | One Vaayu, freestanding or wall-mounted | The entire connected ground floor, one identity, on a schedule | Every room behind a door — and no refill oil is sold today |
| About ₹16,000 | Vaayu plus five reed diffusers | The whole house, correctly, with no product doing the wrong job | Nothing — this is the finished specification |
| The honest caveat: if the budget only stretches to one line, buy the bottles first. Five reed diffusers at roughly ₹4,000 finish five rooms permanently and teach you which spaces actually bother you, and the open floor can wait a season. The order that goes wrong is the machine first and the bottles never — the ground floor sounds impressive and the bedrooms are where people spend their evenings. The exception is a property let to guests, where the arrival experience is the point and the open floor is what a guest meets first. | |||
Part six — the honest limits of each system
What each product will never do, said plainly. If none of the limits in a row would trouble you, that row is your purchase.
| System | Price | Does brilliantly | Will never do |
|---|---|---|---|
| Sukoon ★ | ₹1,899 | One normal-to-large room, on demand, 16–18 hrs a fill, timed | Reach past 320 sq ft, or scent a room without adding moisture |
| Reed diffuser 50ml | ₹749–₹849 | A closed room, constantly, with no socket and no attention | Turn on, turn up, or exceed about 250–300 sq ft |
| Reed diffuser 130ml | ₹1,249–₹1,349 | The same room for 14–18 weeks instead of 6–8 | Smell stronger than the 50ml — size buys weeks, not reach |
| Boond | ₹899 | A bedroom or study at about 150 sq ft, with a switch and a night light | Run longer than about 6 hrs a fill, or cover a living room |
| Megh 6L | ₹3,499 | About 100 hours unattended, and humidity in a dry winter | Cover a big room — it reaches ~215 sq ft, below the Sukoon |
| Vaayu | ₹11,999 | Up to 1000m³ dry and undiluted, scheduled, intensity-set and key-locked | Reach through a closed door — and no separate refill oil is sold today |
| Reed oil refill | ₹2,399 / ₹3,499 | Keep a bottle running at ₹7–8 per ml instead of ₹15–17 | Include reeds — they are not sold separately; refresh them yourself |
| Hotel Collection | ₹299 / ₹999 / ₹1,799 | Restock any SOSA ultrasonic, indefinitely | Go into a Vaayu — it is water-based, and they are different products |
Versailles
When there were three products, nobody needed a map. There are now six ways to scent a room under this name, from ₹749 to ₹38,500, and a range that wide creates a problem the individual product pages cannot solve: a customer's likeliest mistake is no longer buying the wrong brand, it is buying the wrong rung from the right one. That is worse, because we took the money and they still have the problem, and the honest fix is a page like this rather than better photography.
So the whole argument here is a tape measure. Connected area, ceiling height, closed doors. I have watched that exercise talk people out of an ₹11,999 purchase and into a ₹1,899 one more often than the reverse, and I would rather it did — a Sukoon in the room it was built for produces a happy customer, and a Vaayu idling at the bottom of its range produces someone who quietly concludes that scent machines are overrated.
Two things I will keep repeating on every page in this cluster, because they are the gaps in our own range and I would rather you heard them from me. We do not sell replacement reeds separately, so refresh yours every few months yourself. And we do not currently sell a separate refill oil for the Vaayu — the 400ml in the box is what exists today, the water-based Hotel Collection is a different product that must not go in that machine, and if long-term supply matters to you, ask us where it stands before you order. Everything is made in India, and a part of every order funds a girl's classroom through Nanhi Kali.
Frequently asked questions
- Cold-air vs reed diffuser for large spaces and cold-air vs ultrasonic — active against passive, and diluted against undiluted.
- Nebulising vs ultrasonic for large homes and scent machine vs reed diffusers for a villa — the word on the spec sheet, and the labour ledger.
- Scent machine vs several reed diffusers and Sukoon vs Vaayu — consistency against character, and the six-times price gap.
- Reed diffuser vs Vaayu and Sukoon vs Vaayu for a large living room — the two ends of the range, and the commonest real decision.
- Reed diffuser vs Sukoon vs Vaayu — the full three-way, with Boond, Megh and Aangan placed around it.
- Brand: the SOSA founder story.
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.