★ SOSA Vaayu · open-plan volume
The specification is a volume, not a floor plan — measure the cubic metres you actually have before anyone sells you a machine
★ ★ ★ ★ ★
★★★★★
"Measured our ground floor properly for the first time and got 275 cubic metres. That one number told me more than a week of reading reviews."
Villa owner · measured first
★★★★★
"Our double-height living room is only 1,200 square feet of floor but over 550 cubic metres of air. That explained four years of failed diffusers."
Double-height living room
★★★★★
"Two floors on an open stairwell came to about 896 cubic metres. Close enough to the ceiling that I run it on a higher intensity, exactly as advised."
Vaayu · two connected floors
★★★★★
"Doing the sum told me I did not need this machine. Our connected volume was 190 cubic metres and a Sukoon was the honest answer."
Bought a Sukoon instead
★★★★★
"Appreciated being told that the 400ml in the box is the whole supply right now. I asked SOSA about refills, got a straight answer, then bought."
Vaayu ₹11,999
★★★★★
"Feet-to-cubic-metres conversion in the article saved me from guessing. Our contractor works in feet and I do not."
Villa owner · measuring method
★★★★★
"Measured our ground floor properly for the first time and got 275 cubic metres. That one number told me more than a week of reading reviews."
Villa owner · measured first
★★★★★
"Our double-height living room is only 1,200 square feet of floor but over 550 cubic metres of air. That explained four years of failed diffusers."
Double-height living room
★★★★★
"Two floors on an open stairwell came to about 896 cubic metres. Close enough to the ceiling that I run it on a higher intensity, exactly as advised."
Vaayu · two connected floors
★★★★★
"Doing the sum told me I did not need this machine. Our connected volume was 190 cubic metres and a Sukoon was the honest answer."
Bought a Sukoon instead
★★★★★
"Appreciated being told that the 400ml in the box is the whole supply right now. I asked SOSA about refills, got a straight answer, then bought."
Vaayu ₹11,999
★★★★★
"Feet-to-cubic-metres conversion in the article saved me from guessing. Our contractor works in feet and I do not."
Villa owner · measuring method
✓ Vaayu · up to 1000m³ (about 2,000–3,000 sq ft, depending on ceiling height) ✓ 400ml tank · 90+ days a fill · 1h / 4h / 8h / 24h timers · key-lock · under 38 dB · 5W ✓ No separate Vaayu refill oil is sold today — confirm availability with SOSA before buying
Founder Diaries · Large-Space Scenting · Open-Plan Homes
The method in one line: length × width × ceiling height, in metres, for every zone with no closed door between it and the next, then add them up.
If you measure in feet: multiply length × width × height in feet, then divide by 35.3 to get cubic metres.
The gap you must know about: SOSA does not currently sell a separate Vaayu refill oil. The 400ml supplied in the box is the whole cold-air supply available today, and the water-based Hotel Collection is a different product that does not go in this machine.
Vaayu₹11,999 · up to 1000m³Under about 100m³ — a normal room, perhaps a modest living-dining. This is Sukoon territory at ₹1,899 and buying a cold-air machine here is buying capability you will never use. Roughly 100 to 800m³ — the Vaayu's comfortable working range, where you can run at a mid intensity and expect the 400ml tank to give the 90+ days the specification quotes. Roughly 800 to 1000m³ — inside the rating but near the top of it, so plan on a higher intensity setting and accept that a tank will not last as long as it would in a smaller volume, since consumption rises with intensity. Above 1000m³ — outside this machine's specification. That is where a commercial unit such as the Aangan at ₹25,999 exists, and where the honest advice is to stop trying to make a residential machine do a building's job.
Vaayu · 100–1000m³₹11,999Shop → 
Sukoon · under 100m³₹1,899Shop → 
Mountain Breeze · the closed roomsfrom ₹849Shop →
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.
Yes — within a stated limit, and the limit is written in cubic metres rather than square feet for a reason. The Vaayu is specified for connected volumes of up to 1000m³, which the product page translates as roughly 2,000 to 3,000 sq ft. That translation is only true at a particular ceiling height, and the ceiling height in your house is not the one in the brochure. Before anyone spends ₹11,999, the useful thing to do is spend twenty minutes with a tape measure and produce your own number. This page gives you the method, three worked examples, and the honest reasons the answer is sometimes no.
Quick answers — read this first
The specification: up to 1000m³ of connected volume, from a 400ml tank that runs 90+ days per fill, at under 38 dB and 5W.The method in one line: length × width × ceiling height, in metres, for every zone with no closed door between it and the next, then add them up.
If you measure in feet: multiply length × width × height in feet, then divide by 35.3 to get cubic metres.
The gap you must know about: SOSA does not currently sell a separate Vaayu refill oil. The 400ml supplied in the box is the whole cold-air supply available today, and the water-based Hotel Collection is a different product that does not go in this machine.
The short answer
Short answer: yes, the SOSA Vaayu is built for exactly this job — a large connected residential volume that no reed diffuser or ultrasonic can reach. It nebulises undiluted oil into a dry cold-air mist with its own propulsion, and it is rated up to 1000m³. Whether it covers your open plan depends on a number you can work out yourself in twenty minutes, and I would rather you worked it out before buying than after.
The measurement: take every zone that shares air — living, dining, open kitchen, entry hall, passage, and any stairwell or double-height void that is genuinely open — and calculate length × width × ceiling height in metres for each. Add them. Under about 800m³ you have comfortable headroom; between 800 and 1000m³ you are inside spec but should expect to run at a higher intensity; above 1000m³ you are outside the specification and should be looking at a different class of machine.
Shop: the SOSA Vaayu is ₹11,999 and ships with four Hotel Collection cold-air fragrances at 100ml each. If your sum comes in under about 100m³, a Sukoon at ₹1,899 is the honest answer instead. Free shipping above ₹499.
In this guide
Rated to 1000m³
Vaayu cold-air · ₹11,999
If your sum is small
Sukoon 500ml · ₹1,899
For the closed rooms
Reed diffusers · from ₹749
Straight answer
Will a SOSA Vaayu scent my open-plan home?
1. It is rated for up to 1000m³ of connected volume. That is the manufacturer's specification, and it is a volume figure. The 2,000–3,000 sq ft translation on the product page depends entirely on ceiling height, which is why I ask people to work in cubic metres instead.
2. Measure before you buy, not after. Length × width × ceiling height in metres, per zone, for every zone with no closed door between it and the next. Add them up. If you work in feet, multiply the three dimensions in feet and divide the result by 35.3.
3. Count the volume, not the floor plan. A double-height living room with a void over it can hold twice the air of its footprint. An open stairwell connects two floors into one volume. Both are routinely left out of people's mental arithmetic, and both are exactly where fragrance goes.
4. Do not count rooms behind closed doors. A shut door is a wall. Bedrooms, guest rooms and bathrooms that stay closed are not part of the connected volume and will need their own source — a reed diffuser from ₹749 is usually all they need.
5. Read your number against three bands. Under about 100m³, buy a Sukoon at ₹1,899 and stop. Between roughly 100 and 800m³, the Vaayu is comfortably inside its range. Between 800 and 1000m³ it is inside spec but you should plan on a higher intensity setting. Above 1000m³ you are past this machine.
6. Settle the supply question before you spend. SOSA does not currently sell a separate Vaayu refill oil. The 400ml in the box — four Hotel Collection cold-air fragrances at 100ml each — is the supply available today, and at 90+ days a fill that is a long run but a finite one. Ask SOSA where refills stand before committing.
7. Remember what a scent machine is for. It adds fragrance to a space. It does not clean air, filter anything or remove any smell, and ventilation remains a separate job for separate equipment.
Made in India, CE / RoHS / SGS certified, and a portion of every order supports girl-child education through Nanhi Kali.
2. Measure before you buy, not after. Length × width × ceiling height in metres, per zone, for every zone with no closed door between it and the next. Add them up. If you work in feet, multiply the three dimensions in feet and divide the result by 35.3.
3. Count the volume, not the floor plan. A double-height living room with a void over it can hold twice the air of its footprint. An open stairwell connects two floors into one volume. Both are routinely left out of people's mental arithmetic, and both are exactly where fragrance goes.
4. Do not count rooms behind closed doors. A shut door is a wall. Bedrooms, guest rooms and bathrooms that stay closed are not part of the connected volume and will need their own source — a reed diffuser from ₹749 is usually all they need.
5. Read your number against three bands. Under about 100m³, buy a Sukoon at ₹1,899 and stop. Between roughly 100 and 800m³, the Vaayu is comfortably inside its range. Between 800 and 1000m³ it is inside spec but you should plan on a higher intensity setting. Above 1000m³ you are past this machine.
6. Settle the supply question before you spend. SOSA does not currently sell a separate Vaayu refill oil. The 400ml in the box — four Hotel Collection cold-air fragrances at 100ml each — is the supply available today, and at 90+ days a fill that is a long run but a finite one. Ask SOSA where refills stand before committing.
7. Remember what a scent machine is for. It adds fragrance to a space. It does not clean air, filter anything or remove any smell, and ventilation remains a separate job for separate equipment.
Made in India, CE / RoHS / SGS certified, and a portion of every order supports girl-child education through Nanhi Kali.
TL;DR: yes, up to 1000m³ of connected volume. Work out your own figure — length × width × ceiling height in metres per open zone, added together, or cubic feet ÷ 35.3 — then read it against the bands. And ask SOSA about refill availability before you spend ₹11,999.
Specified in cubic metres for a reason
SOSA Vaayu · waterless cold-air nebuliser ₹11,999
Up to 1000m³ of connected volume — roughly 2,000 to 3,000 sq ft, depending entirely on how high your ceilings are. Pressurised air atomises undiluted oil into a dry nano-mist: no water, no heat, no residue. 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 and 0.9 kg, black or white, freestanding or wall / HVAC mounted. Four Hotel Collection fragrances at 100ml each in the box, in one of three combos chosen at checkout.
Part one — measure your own volume, in twenty minutes
This is the part of the process nobody does, and it is the part that decides whether ₹11,999 is well spent. You need a tape measure or a laser measure, a piece of paper, and a willingness to include the parts of your house that are mostly air. Work in cubic metres, because that is the unit the specification is written in — and because square feet quietly hide the single biggest variable in a large Indian home, which is how high the ceiling goes.
1
STEP ONE · THE SUM
Length × width × ceiling height, zone by zone
Walk your open plan and break it into rectangles. For each one, measure the length, the width and the height from floor to ceiling, all in metres, and multiply the three together. A living area of 7.5 m × 6 m with a 3 m ceiling is 135m³. A dining area of 5 m × 4.5 m × 3 m is 67.5m³. An open kitchen of 4 m × 3 m × 3 m is 36m³. An entry hall and passage of 6 m × 2 m × 3 m is another 36m³. Add them: 135 + 67.5 + 36 + 36 = 274.5m³. That is the number to compare against the 1000m³ specification, and in this example it sits comfortably inside it. If your tape measure and your contractor both work in feet, do the multiplication in feet and divide the result by 35.3 — a 25 ft × 20 ft room with a 10 ft ceiling is 5,000 cubic feet, and 5,000 ÷ 35.3 is about 142m³. Round generously rather than tightly; you are sizing equipment, not billing a client.
Do not skip the height: two rooms of identical floor area can differ by a factor of two in the number that actually matters.
2
STEP TWO · WHAT COUNTS
Connected means air can move, not that you can see through
Include every zone that shares air with the one next to it. That means living, dining, open kitchen, entry hall, corridors and any archway or wide opening. It also means two things people almost always forget. The first is a double-height void: if your living room has a six-metre ceiling with a gallery over it, the volume is measured to the real ceiling, not to the height of the doorway. The second is an open stairwell, which behaves as a chimney and joins your ground floor to your first-floor landing into one connected volume — you should measure the stairwell itself and the landing it opens onto, and add both. Exclude anything behind a door that is shut for most of the day: bedrooms, bathrooms, guest rooms, utility. A shut door is a wall as far as fragrance is concerned, and those rooms need their own small source rather than a share of a machine's rating.
The test for a doubtful opening: if you would expect to hear conversation through it, count it. If not, do not.
3
STEP THREE · READ THE NUMBER
Four bands, and what each one means for your money
Vaayu₹11,999 · up to 1000m³Under about 100m³ — a normal room, perhaps a modest living-dining. This is Sukoon territory at ₹1,899 and buying a cold-air machine here is buying capability you will never use. Roughly 100 to 800m³ — the Vaayu's comfortable working range, where you can run at a mid intensity and expect the 400ml tank to give the 90+ days the specification quotes. Roughly 800 to 1000m³ — inside the rating but near the top of it, so plan on a higher intensity setting and accept that a tank will not last as long as it would in a smaller volume, since consumption rises with intensity. Above 1000m³ — outside this machine's specification. That is where a commercial unit such as the Aangan at ₹25,999 exists, and where the honest advice is to stop trying to make a residential machine do a building's job.Part two — four worked examples, with the arithmetic shown
These are the four configurations I am asked about most. Every figure below is plain arithmetic on the dimensions in the second column, and the square-foot column is there only to show how loosely floor area tracks the number that matters.
Volume, worked out
Four Indian open-plan configurations against the 1000m³ rating
| Configuration | Zones and dimensions | The arithmetic | Volume | Floor area | Verdict |
|---|---|---|---|---|---|
| 3BHK flat, open living-dining-kitchen ★ | 7.5 × 6 × 3 · 5 × 4.5 × 3 · 4 × 3 × 3 · 6 × 2 × 3 | 135 + 67.5 + 36 + 36 | ≈ 275m³ | ≈ 985 sq ft | Comfortably inside — mid intensity |
| Villa with a double-height living room | 8 × 7 × 6 · 6 × 5 × 3.2 · 4.5 × 3.5 × 3.2 · stairwell 4 × 3 × 6 | 336 + 96 + 50.4 + 72 | ≈ 554m³ | ≈ 1,224 sq ft | Inside — note the volume is double what the footprint suggests |
| Two floors joined by an open stairwell | 16 × 10 × 3.2 · 12 × 8 × 3.2 · stairwell 4 × 3 × 6.4 | 512 + 307.2 + 76.8 | ≈ 896m³ | ≈ 2,885 sq ft | Inside but near the top — higher intensity, shorter tank life |
| Great room / party floor, 4.5 m ceiling | 20 × 14 × 4.5 | 20 × 14 × 4.5 | ≈ 1,260m³ | ≈ 3,014 sq ft | Outside the rating — a commercial unit, not this one |
| The honest caveat: notice how badly square feet predicts the answer. The double-height villa at 1,224 sq ft holds twice the air of the 985 sq ft flat, and the two-floor house at 2,885 sq ft is close to the machine's ceiling while a single 3,014 sq ft room with a 4.5 m ceiling is past it. The product page's "2,000–3,000 sq ft" is a translation of 1000m³ that assumes fairly tall ceilings — at an ordinary 3 m Indian slab height, 1000m³ would work out closer to 3,500 sq ft. Treat the cubic figure as the specification and the square-foot band as a rough, conservative guide. All of these are manufacturer specifications and arithmetic on them, not measurements taken in your house. | |||||
Shop this guide
Matched to the number you just worked out
Vaayu · 100–1000m³₹11,999Shop → Sukoon · under 100m³₹1,899Shop → Mountain Breeze · the closed roomsfrom ₹849Shop →
The SOSA principle
Square feet is what an estate agent sells you. Cubic metres is what you have to fill.
Every large-space scenting failure I have investigated began with someone sizing equipment against a floor plan and never once looking up.
Part three — when the answer is no, and the gap you should know about
There are four situations where I would tell someone with an open-plan home not to buy this machine, and I would rather say them here than in an email after the fact. The first is a small number. If your sum came out under about 100m³ — and a great many "open-plan" Indian flats do — a Sukoon at ₹1,899 covers 270–320 sq ft with timers, a remote and three fragrances in the box, and it will do everything you need for a seventh of the money. The second is a house made of closed doors. If the volume that is genuinely connected is small and the rest of the house is six shut rooms, you are buying reach you cannot deliver; reed diffusers in each room plus one modest machine in the common area is the better architecture. The third is a very large number. Past 1000m³ you are outside the specification, and stretching a machine past its rating produces a disappointed owner rather than a scented building — the Aangan at ₹25,999 exists for that scale.
The fourth is about supply, and it is the one I insist on stating in every Vaayu post. SOSA does not currently sell a separate refill oil for the Vaayu. The machine ships with 400ml of cold-air fragrance — four SOSA Hotel Collection scents at 100ml each, in one of three combos you pick at checkout — and that is the entire supply available at the time of writing. At 90+ days per fill it is a meaningful run, and at a higher intensity in a large volume it will be less than that. The water-based Hotel Collection sold at ₹299, ₹999 and ₹1,799 is a different product built for ultrasonic machines; it shares scent names with the cold-air oils and it must not be put in a Vaayu. So if long-term supply matters to you — and for anyone committing to a signature scent across a whole floor, it should — ask SOSA where refill availability stands before you spend, not after. This is the same honesty we apply to the reed range, where replacement reeds are not sold separately and we say so rather than pretending otherwise.
A word too on what "covers 1000m³" does and does not promise. It is a manufacturer specification for the volume the machine can distribute fragrance through; it is not a promise of a particular intensity at a particular spot in your house, and real behaviour varies with ceiling height, ventilation, air-conditioning, how many doors are open and the season. Nor does it promise anything at all about air quality. A scent machine adds fragrance and does nothing else — it does not clean, purify, filter, sanitise or remove any smell, and if a space smells of something you would rather it did not, the extractor and the windows come first and the machine second. I would rather sell fewer of these and have every one of them doing a job it was built for.
Twenty minutes with a tape measure is the cheapest part of this purchase. It is also the part that decides it.
— Sonal Sahani, SOSA
Part four — the recommendation, by volume band
Take the number you calculated in Part one and find its row. If you have not done the sum yet, go and do it — everything below is meaningless without it.
The volume-band edit
Your cubic metres, and what I would actually buy
| Your connected volume | Roughly equivalent to | What to buy | Spend |
|---|---|---|---|
| Under 40m³ ★ | One bedroom or a small study | A reed diffuser, six fibre reeds, flipped weekly | From ₹749 · 6–8 weeks |
| 40–100m³ | A normal living room or modest living-dining | One Sukoon, 270–320 sq ft, 16–18 hrs on low | ₹1,899 |
| 100–250m³ | A generous open living-dining-kitchen | Vaayu if you want one even field; two Sukoons if you want redundancy | ₹11,999 · or ₹3,798 |
| 250–800m³ | A villa ground floor, or a double-height living room | Vaayu at mid intensity — its comfortable range | ₹11,999 |
| 800–1000m³ | Two floors joined by an open stairwell | Vaayu at higher intensity; expect a tank to last less than 90 days | ₹11,999 |
| Above 1000m³ | A great room, banquet floor or small commercial space | Aangan — HVAC nebulising, 8,000–10,000 sq ft class | ₹25,999 |
| Any closed rooms, at any volume | Bedrooms, guest rooms, bathrooms | Their own reed diffuser each — a shut door is a wall | From ₹749 each |
| Never a volume answer: the Megh | ~215 sq ft — less than the Sukoon | 6L and ~100 hrs of runtime; a runtime and humidity machine | ₹3,499 |
Honest notes for buyers: the 1000m³ figure, the 400ml tank and the 90+ days per fill are manufacturer specifications; every volume calculation on this page is arithmetic on dimensions, not a measurement taken in any particular home, and real performance varies with ceiling height, ventilation, AC behaviour, intensity setting and season. Consumption rises with intensity, so a large volume run hard will not give the same tank life as a small one run gently. SOSA does not currently sell a separate Vaayu refill oil — the 400ml supplied in the box is the cold-air fragrance available today; confirm current availability with SOSA before purchasing if long-term supply matters. The water-based Hotel Collection for ultrasonic machines is a different product and must not be used in a Vaayu; reed oil goes in neither. Warranty length, AMC, installation service and app platform details are not something I can state here — ask SOSA. 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.
If your sum came out small
SOSA Sukoon · 500ml ultrasonic ₹1,899
A great many people who write to me about their "large open-plan home" measure it and find 80 or 90 cubic metres — which is a normal room with a wide doorway. The Sukoon covers 270–320 sq ft, runs 16–18 hours on low from a 500ml tank, and comes with a remote, steady / 2H / 4H timers and three 15ml Hotel Collection fragrances in the box. If that is your number, this is the honest purchase, and the ₹10,100 you did not spend is better in your pocket than in a machine rated for ten times the volume you own.
SS
ISIPCA
Versailles
Versailles
A note from Sonal
I began asking people for cubic metres after the fourth or fifth conversation that went the same way. Someone would describe a home as "about two thousand square feet, open plan," I would agree that a Vaayu sounded right, and then a photograph would arrive showing a double-height void, a gallery landing and an open staircase running up through the middle of it. The floor plan had been honest and the volume had been nearly double what either of us assumed. Nobody was at fault. Square feet is simply the wrong unit for this problem and we all keep using it because it is the unit our houses are sold in.
So now I ask for the sum. It takes twenty minutes, it costs nothing, and it has talked as many people out of this purchase as into it — which is precisely why I am comfortable publishing the method rather than a coverage badge. If your number is 90 cubic metres, I would like you to know that before you spend ₹11,999, and I would like you to spend ₹1,899 instead and think well of us.
The other thing I want you to know before you decide is the refill position. We ship 400ml with the machine and we do not currently sell a separate cold-air refill for it. That is a real gap and I am not going to bury it under a specification table. Ask us where it stands on the day you are buying; if the answer does not suit your horizon, do not buy. Everything we make is composed and handmade in Pune, and a part of every order funds a girl's classroom through Nanhi Kali.
Frequently asked questions
How do I work out the volume of my open-plan home?
Break the connected space into rectangles and, for each, multiply length × width × ceiling height in metres. Add the results. Include double-height voids at their true height and open stairwells and landings; exclude any room behind a door that is normally shut. If your measurements are in feet, multiply the three dimensions in feet and divide by 35.3 to convert to cubic metres.
Is the SOSA Vaayu really enough for 3,000 sq ft?
The specification is up to 1000m³, and 3,000 sq ft only equals that at a ceiling height of roughly 3.6 metres. At an ordinary 3 m slab height, 1000m³ works out closer to 3,500 sq ft; at 4.5 m it is nearer 2,400 sq ft. This is why the honest answer is to measure your volume rather than trust a square-foot figure, and why the product page quotes a conservative band.
Does the Vaayu scent bedrooms if the doors are closed?
No. A closed door is a wall for this purpose, and no coverage rating changes that. Rooms that stay shut need their own source — a reed diffuser from ₹749 with six fibre reeds is usually all a bedroom needs, and it uses no electricity. The common hybrid in large Indian homes is one machine on the open floor plus a reed diffuser per closed room.
How long does the 400ml last in a large open-plan home?
The specification is 90+ days per fill, which assumes a mid intensity setting. Consumption rises with intensity, so a volume near the top of the rating run at a high setting will use the tank faster than a smaller one run gently. Treat 90+ days as a specification rather than a guarantee, and note that SOSA does not currently sell a separate refill oil — the 400ml in the box is the supply available today.
Can I use the Hotel Collection oil I already own to refill it?
No. The 15ml / 100ml / 300ml Hotel Collection at ₹299 / ₹999 / ₹1,799 is water-based and made for ultrasonic machines. The oil supplied with a Vaayu is a cold-air oil designed to be nebulised undiluted. They share scent names but they are different products, and the water-based one must not go into a Vaayu. Reed diffuser oil goes in neither machine.
Large-space scenting · open-plan volume
Do the sum first — cubic metres, not square feet — then decide
The SOSA Vaayu at ₹11,999 is specified for connected volumes up to 1000m³, nebulising undiluted oil into a dry cold-air mist with no water and no heat, from a 400ml tank rated at 90+ days per fill, with app and onboard control, 1h / 4h / 8h / 24h timers, adjustable intensity, auto-stop and key-lock, at under 38 dB on 5W. It ships with four Hotel Collection fragrances at 100ml each. No separate Vaayu refill oil is sold at the time of writing — ask SOSA before you commit. Free shipping above ₹499, and a portion of every order supports girl-child education through Nanhi Kali.
See the Vaayu → Sukoon ₹1,899
Continue the read
More on open-plan and large-volume scenting
- Why are large open rooms difficult to fragrance? — volume, air exchange and absorption together.
- How to fragrance a villa with high ceilings — the height multiplier, in full.
- One powerful diffuser vs several small ones — evenness against resilience.
- The complete large open-space guide — this page and the eight around it, in one place.
- 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, on whether the SOSA Vaayu suits a large open-plan residential space and how to measure your own connected volume before buying. Coverage, tank and runtime figures are manufacturer specifications; every volume calculation shown is arithmetic on stated dimensions rather than a measurement taken in a particular home, and real performance varies with ceiling height, ventilation, air-conditioning, intensity setting and season. Unit conversions use 1 cubic metre ≈ 35.3 cubic feet and 1 square metre ≈ 10.76 square feet. No health, 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.