★ SOSA Vaayu · sizing a large Airbnb
The number of bedrooms on your listing tells you almost nothing about the air you actually have to scent — measure the connected volume first
★ ★ ★ ★ ★
★★★★★
"I had been shopping by bedroom count. Measuring the connected volume told me my four-bedroom listing was a 190 cubic metre problem, not a 600 one, because the bedrooms are always shut."
4BHK villa listing · sizing
★★★★★
"The ceiling-height line was the part nobody had told me. My living-dining is fourteen feet at the apex and that alone put me a whole product up the range."
Double-height living-dining
★★★★★
"I have run this listing for three years and had bought three machines before this. Working out the cubic metres took twenty minutes and would have saved me two of them."
Weekend villa · second purchase
★★★★★
"Honest about the refill situation, which is more than the other sellers I asked. I bought knowing the box has 400ml and that is the supply today."
Vaayu · bought informed
★★★★★
"What convinced me was being told my two-bedroom flat did not need the expensive machine. I bought the Sukoon instead and it is genuinely enough for that room."
2BHK listing · Sukoon ₹1,899
★★★★★
"Measuring with the bedroom doors closed changed the answer completely. Guests shut those doors within a minute of walking in and I had been scenting for a floor plan nobody experiences."
Heritage listing · common areas
★★★★★
"I had been shopping by bedroom count. Measuring the connected volume told me my four-bedroom listing was a 190 cubic metre problem, not a 600 one, because the bedrooms are always shut."
4BHK villa listing · sizing
★★★★★
"The ceiling-height line was the part nobody had told me. My living-dining is fourteen feet at the apex and that alone put me a whole product up the range."
Double-height living-dining
★★★★★
"I have run this listing for three years and had bought three machines before this. Working out the cubic metres took twenty minutes and would have saved me two of them."
Weekend villa · second purchase
★★★★★
"Honest about the refill situation, which is more than the other sellers I asked. I bought knowing the box has 400ml and that is the supply today."
Vaayu · bought informed
★★★★★
"What convinced me was being told my two-bedroom flat did not need the expensive machine. I bought the Sukoon instead and it is genuinely enough for that room."
2BHK listing · Sukoon ₹1,899
★★★★★
"Measuring with the bedroom doors closed changed the answer completely. Guests shut those doors within a minute of walking in and I had been scenting for a floor plan nobody experiences."
Heritage listing · common areas
✓ Vaayu: waterless cold-air nebulisation · up to 1000m³ · 400ml tank · under 38 dB · 5W ✓ Sukoon 270–320 sq ft ₹1,899 · Megh ~215 sq ft ₹3,499 (runtime, not coverage) · Boond ~150 sq ft ₹899 ✓ No SOSA product claims to change ratings, reviews, bookings or occupancy — and this guide will not either
Founder Diaries · Large-Space Scenting · Sizing
The bands: under about 120m³ a Sukoon at ₹1,899 is the honest answer. Above roughly 250–300m³ of one connected volume, no passive or ultrasonic format reaches it and the Vaayu at ₹11,999 is the category change.
What the Vaayu actually covers: up to 1000m³ — the manufacturer's figure — which SOSA states as about 2,000 to 3,000 sq ft because ceiling height decides which end you land on.
The gap you must know before buying: SOSA does not currently sell a separate Vaayu refill oil. The 400ml in the box is the supply available today. If long-term supply matters to your operation, ask SOSA before you spend.
Sukoon₹1,899 · 270–320 sq ftCoverage claims come in square feet because floor area is what people can quote from a rental agreement, but air is cubic. The conversion is simple enough to do on a phone: connected floor area in square feet × ceiling height in feet ÷ 35.3 = cubic metres. An 800 sq ft connected living-dining at a standard 10 ft ceiling is 8,000 cu ft, and 8,000 ÷ 35.3 = about 227m³. Raise that ceiling to 14 ft for a double-height section and the same floor plan becomes 11,200 ÷ 35.3 = about 317m³ — forty per cent more air from a change that does not appear on any listing. This is why two hosts with identical square footage can need different machines, and why the Vaayu's 1000m³ rating translates to a range of 2,000 to 3,000 sq ft rather than a single number.
Vaayu · up to 1000m³₹11,999Shop → 
Sukoon · 270–320 sq ft₹1,899Shop → 
Reeds · behind closed doorsfrom ₹749Shop →
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.
Almost every host who writes to me about a large listing opens with the bedroom count. Four bedrooms, three floors, sleeps ten. None of those numbers describe the thing a scent machine has to fill. A diffuser scents connected air, and connected air is measured in cubic metres, not in bedrooms — which is why a four-bedroom villa can turn out to be a smaller scenting problem than a two-bedroom loft, and why the machine that fits is almost never the one the listing size would suggest.
Quick answers — read this first
The measurement that matters: connected floor area with the doors in the state guests leave them, multiplied by ceiling height. Square feet × feet ÷ 35.3 = cubic metres.The bands: under about 120m³ a Sukoon at ₹1,899 is the honest answer. Above roughly 250–300m³ of one connected volume, no passive or ultrasonic format reaches it and the Vaayu at ₹11,999 is the category change.
What the Vaayu actually covers: up to 1000m³ — the manufacturer's figure — which SOSA states as about 2,000 to 3,000 sq ft because ceiling height decides which end you land on.
The gap you must know before buying: SOSA does not currently sell a separate Vaayu refill oil. The 400ml in the box is the supply available today. If long-term supply matters to your operation, ask SOSA before you spend.
The short answer
Short answer: walk your listing the way a guest does, with every door in the position it will actually be in at eleven at night, and measure only the floor area that is still connected. Multiply by the ceiling height. That cubic figure — not the bedroom count, not the total carpet area on your listing — is what you are buying a machine for. Most large Indian listings turn out to have one connected common volume of 150–500m³ and a set of separate sealed bedrooms, and the correct answer is one machine for the first and reeds for the second.
The mechanism: a reed diffuser is a point source with no propulsion and an ultrasonic carries fragrance diluted in water on a small fan, so both fade steeply with distance. Cold-air nebulisation atomises undiluted oil into a dry mist under pressure, which is why the reach differs by an order of magnitude rather than by a percentage. The step from ultrasonic to cold-air is a change of category, not a bigger version of the same thing.
In this guide
Above 250–300m³ connected
SOSA Vaayu · up to 1000m³ · ₹11,999
One normal room, on demand
Sukoon · 270–320 sq ft · ₹1,899
Behind every closed door
Reed diffusers · from ₹749
Straight answer
How do I choose a scent machine for a large Airbnb?
1. Stop counting bedrooms and start counting cubic metres. Bedrooms behind closed doors are separate air systems; they are not part of the volume a central machine has to fill. What you are sizing for is the connected common volume — entrance, living, dining, kitchen if it is open, the stairwell and any landing that opens onto it.
2. Measure it with the doors as guests leave them. Not as your floor plan draws them. Walk in at check-in time, note which doors are shut, and measure only what remains joined together.
3. Multiply by ceiling height, because volume is cubic. The arithmetic: connected sq ft × ceiling height in feet ÷ 35.3 = cubic metres. A 1,400 sq ft connected floor at 10 ft is 14,000 cu ft, and 14,000 ÷ 35.3 = about 397m³.
4. Match the number to a format, not to a price. Under about 120m³, a Sukoon at ₹1,899. Between roughly 120 and 250m³, a Sukoon placed at the junction plus reeds, or two Sukoons. Above 250–300m³ of genuinely open connected volume, no ultrasonic reaches it and the Vaayu at ₹11,999 is the category change rather than the next size up.
5. Do not read the Megh at ₹3,499 as a coverage upgrade. Its 6L tank buys about 100 hours of runtime, but its coverage is roughly 215 sq ft — less than the ₹1,899 Sukoon's 270–320. It is a runtime and humidity machine. Buying it to reach further is the commonest sizing mistake in this range.
6. Know what you cannot buy yet. SOSA does not currently sell a separate Vaayu refill oil; the machine ships with 400ml of cold-air fragrance and that is the supply available today. Confirm current availability with SOSA before committing if you need continuity.
Everything is composed and handmade in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
2. Measure it with the doors as guests leave them. Not as your floor plan draws them. Walk in at check-in time, note which doors are shut, and measure only what remains joined together.
3. Multiply by ceiling height, because volume is cubic. The arithmetic: connected sq ft × ceiling height in feet ÷ 35.3 = cubic metres. A 1,400 sq ft connected floor at 10 ft is 14,000 cu ft, and 14,000 ÷ 35.3 = about 397m³.
4. Match the number to a format, not to a price. Under about 120m³, a Sukoon at ₹1,899. Between roughly 120 and 250m³, a Sukoon placed at the junction plus reeds, or two Sukoons. Above 250–300m³ of genuinely open connected volume, no ultrasonic reaches it and the Vaayu at ₹11,999 is the category change rather than the next size up.
5. Do not read the Megh at ₹3,499 as a coverage upgrade. Its 6L tank buys about 100 hours of runtime, but its coverage is roughly 215 sq ft — less than the ₹1,899 Sukoon's 270–320. It is a runtime and humidity machine. Buying it to reach further is the commonest sizing mistake in this range.
6. Know what you cannot buy yet. SOSA does not currently sell a separate Vaayu refill oil; the machine ships with 400ml of cold-air fragrance and that is the supply available today. Confirm current availability with SOSA before committing if you need continuity.
Everything is composed and handmade in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
TL;DR: connected sq ft × ceiling height ÷ 35.3 = cubic metres. Under 120m³, Sukoon ₹1,899. 120–250m³, Sukoon plus reeds. Above 250–300m³ of open connected volume, Vaayu ₹11,999. Megh is runtime, never reach. Bedrooms behind doors are reed territory whatever you buy.
The machine sized in cubic metres
SOSA Vaayu · waterless cold-air diffuser ₹11,999
Pressurised air atomises undiluted oil into a dry nano-mist — no water, no heat, nothing damp added to a monsoon-season room. Rated up to 1000m³, which SOSA states as roughly 2,000 to 3,000 sq ft because ceiling height decides where in that band you land. A 400ml refillable tank runs 90+ days on a mid setting, and the Bluetooth app adds 1h / 4h / 8h / 24h timers, adjustable intensity, auto-stop and a key-lock so a guest cannot alter it. Under 38 dB, 5W, 0.9 kg, freestanding or wall and HVAC mountable. Four Hotel Collection fragrances at 100ml each are included in the box.
Part one — how to measure what actually needs scenting
The listing describes a property. The machine has to fill a volume. Those two things diverge more than most hosts expect, and they diverge in a direction that usually saves money. A guest arriving at nine in the evening does not experience 2,400 square feet of carpet area; they experience whatever air is joined to the front door at the moment they open it. That is the figure to buy against, and there is a twenty-minute method for finding it that needs nothing but a tape measure and a walk-through at the hour your check-ins actually happen.
1
STEP ONE · THE DOORS
Measure the property guests inhabit, not the one on the floor plan
Walk in as a guest and note the position of every internal door as it will realistically be. Bedroom doors close within a minute of arrival and stay closed. Bathroom doors close. A utility or service passage is usually shut. What is left joined to the entrance — hall, living, dining, an open kitchen, the stairwell if it is open-tread — is your connected footprint. Everything behind a closed door is a separate scenting problem with its own answer, and that answer is almost always a reed diffuser rather than a share of a machine's output. This single step routinely cuts the number a host thought they were sizing for by half or more, and it is the reason a four-bedroom villa can be a smaller machine problem than an open-plan two-bedroom loft.
The rule: a closed door is a wall. Size for the air on your side of it.
2
STEP TWO · THE ARITHMETIC
Height is the multiplier nobody prices
Sukoon₹1,899 · 270–320 sq ftCoverage claims come in square feet because floor area is what people can quote from a rental agreement, but air is cubic. The conversion is simple enough to do on a phone: connected floor area in square feet × ceiling height in feet ÷ 35.3 = cubic metres. An 800 sq ft connected living-dining at a standard 10 ft ceiling is 8,000 cu ft, and 8,000 ÷ 35.3 = about 227m³. Raise that ceiling to 14 ft for a double-height section and the same floor plan becomes 11,200 ÷ 35.3 = about 317m³ — forty per cent more air from a change that does not appear on any listing. This is why two hosts with identical square footage can need different machines, and why the Vaayu's 1000m³ rating translates to a range of 2,000 to 3,000 sq ft rather than a single number.
The tell: if you have never multiplied by ceiling height, you have never actually sized a diffuser.
3
STEP THREE · THE LEAKS
Air exchange, and why an open villa reads bigger than it measures
A volume figure assumes the air stays put, and in an Indian property it rarely does. A balcony door left open for the view, a cross-ventilated Goan villa, an exhaust fan running in an open kitchen, a stairwell venting to a terrace — each replaces the scented air faster than the arithmetic assumes and effectively enlarges the job. Ventilation is not the enemy; it is a variable you must include before you buy, not discover afterwards. The practical adjustment is a judgement, not a formula: a sealed, air-conditioned flat behaves at or slightly below its measured volume, and a naturally ventilated house with doors to a garden behaves like something twenty to forty per cent larger. Ventilate first and scent second, always — fragrance layered onto stale air makes a third smell nobody designed, and no machine in any price range corrects for a room that has not been aired.
Part two — the sizing table, by connected volume
Here is the whole range arranged against the only measurement that matters. The square-foot column assumes a standard 10 ft ceiling and exists purely so you can sanity-check your metric figure; if your ceilings are higher, trust the cubic column and ignore the square feet entirely.
Sizing by connected volume
What actually holds each band of air
| Connected volume | Roughly, at a 10 ft ceiling | What holds it | Price | The catch |
|---|---|---|---|---|
| Under 45m³ | Up to ~150 sq ft | One Boond, or a single reed diffuser | ₹899 · reeds from ₹749 | Boond runs ~6 hrs a fill — fine for a bathroom, short for a whole evening |
| 45–120m³ ★ | ~150–420 sq ft | One Sukoon — where most listings honestly stop | ₹1,899 | Adds humidity; three 15ml scents in the box, then you buy more |
| 120–250m³ | ~420–880 sq ft | A Sukoon at the junction plus reeds in the side rooms, or two Sukoons | ₹1,899–₹3,798 plus reeds | Two machines means two smells unless you run one scent in both |
| 250–1000m³ | ~880–3,500 sq ft | One Vaayu, placed at the junction of the connected volume | ₹11,999 | No separate refill oil is sold today — 400ml in the box is the supply |
| Above 1000m³ | Above ~3,500 sq ft | Aangan ducted into HVAC, or two Vaayu units on separate floors | ₹25,999 · or 2 × ₹11,999 | Commercial territory; needs ductwork or a genuine floor split |
| Any size | Any | Megh 6L — for runtime, not reach | ₹3,499 | ~215 sq ft coverage, less than the ₹1,899 Sukoon. Never a coverage upgrade |
| The honest caveat: these bands are working guidance from our own testing and from host correspondence, not laboratory measurements, and every one of them moves with ventilation, ceiling height, furnishing density and season. A soft-furnished, carpeted room absorbs fragrance and reads a band smaller; a marble-and-glass villa with the doors open reads a band larger. Treat the table as a starting point and your own first fortnight as the real test. And nothing on this page — nothing anywhere on this site — should be read as a claim that scenting a listing changes its rating, its reviews, its bookings or its occupancy. Nobody can promise that, ourselves included. | ||||
Shop this guide
The three bands most large listings fall into
Vaayu · up to 1000m³₹11,999Shop → Sukoon · 270–320 sq ft₹1,899Shop → Reeds · behind closed doorsfrom ₹749Shop →
The SOSA principle
You are not scenting a property. You are scenting one connected volume, plus a set of sealed boxes.
Size a machine for the first and buy reeds for the second. Almost every oversized purchase in this category comes from treating the whole listing as one job.
Part three — when the answer is not a machine at all
I would rather lose the sale than sell a host eleven thousand rupees of coverage they will never use, so let me put the negative case as clearly as the positive one. If your connected common volume comes out under about 120m³, the Vaayu is the wrong purchase and a Sukoon at ₹1,899 will do the job properly — 270 to 320 sq ft, sixteen to eighteen hours on low, a remote and steady, two-hour and four-hour timers, and three 15ml Hotel Collection fragrances in the box so you can find your signature before you commit to a bottle of it. That covers a very large share of Indian two-bedroom listings, and it costs less than a sixth of the machine this cluster is named after. Buying the bigger machine for a smaller room does not make the room smell more; it makes you turn the intensity down.
The second reason to hold off is supply, and it applies to every host reading this. SOSA does not currently sell a separate Vaayu refill oil. The machine arrives with four Hotel Collection fragrances at 100ml each — 400ml in total — and at the quoted 90+ days per fill that is the fragrance available to you at the time of writing. This is a real gap and I would rather name it the way we name the missing replacement reeds in our diffuser range than let a host discover it in month four. Note too that the cold-air oil in the Vaayu box and the water-based Hotel Collection sold for ultrasonic machines are different products that happen to share scent names; the water-based bottles are for a Sukoon or a Boond and do not go into a Vaayu. If continuity of supply is a condition of your operation — and for a host running weekly turnovers it reasonably might be — write to SOSA and ask what refill availability looks like before you spend, not after.
The third reason is that a machine cannot fix an unaired property, and a great many "my listing smells wrong" problems are not fragrance problems at all. A flat that has stood closed for four days in a Mumbai August develops its own smell from damp textiles, a dry drain trap and a fridge nobody emptied. Fragrance layered on top of that does not remove it; it sits beside it and makes something worse than either. The order is always ventilate, clean, dry, and only then scent. A scent machine adds fragrance to air. It does not clean air, remove odour or change how anyone feels, and any seller who tells you otherwise is selling you something a diffuser is not. What it genuinely does is give a guest a considered, consistent first ninety seconds — and that is worth having on its own terms, without dressing it up as anything more.
Bedrooms are sealed boxes with their own answer. Buy the machine for the air that is still joined to the front door.
— Sonal Sahani, SOSA
Part four — four real listings, measured and sized
These are composites of properties hosts have written to me about, worked through the method above. The point is not the products; it is how far the sized answer drifts from what the bedroom count would have suggested.
The sizing edit
From listing description to measured answer
| The listing | Connected common area, doors as guests leave them | Volume | What we would run | Capital |
|---|---|---|---|---|
| 2BHK city flat, 950 sq ft ★ | Living-dining plus hall, 420 sq ft at 10 ft | 4,200 ÷ 35.3 = ~119m³ | One Sukoon plus reeds in both bedrooms | ₹1,899 + reeds |
| 3BHK, 1,450 sq ft, open kitchen | Hall, living, dining and kitchen, 700 sq ft at 10 ft | 7,000 ÷ 35.3 = ~198m³ | Sukoon at the junction plus reeds, or a Vaayu if you want scheduling | ₹1,899 or ₹11,999 |
| 4BHK duplex, 2,400 sq ft | Ground floor common, 1,150 sq ft at 11 ft, open stair | 12,650 ÷ 35.3 = ~358m³ | One Vaayu on the common floor, reeds in the four bedrooms | ₹11,999 + reeds |
| Villa, 4,500 sq ft over two floors | Ground floor, 1,800 sq ft averaging 12 ft with a double-height section | 21,600 ÷ 35.3 = ~612m³ | One Vaayu at the hall-to-living junction, reeds upstairs | ₹11,999 + reeds |
| Loft studio, 1,100 sq ft, no internal doors | All of it, at 16 ft | 17,600 ÷ 35.3 = ~499m³ | One Vaayu — a one-bedroom listing that genuinely needs it | ₹11,999 |
Honest notes for buyers: every volume above is arithmetic on the stated dimensions, not a measurement of a real property, and your own figures will differ. Coverage ratings — 1000m³ for the Vaayu, 270–320 sq ft for the Sukoon, ~150 sq ft for the Boond, ~215 sq ft for the Megh — are manufacturer specifications and move with ceiling height, ventilation, furnishing and season. The Megh at ₹3,499 buys about 100 hours of runtime from a 6L tank and covers less ground than the ₹1,899 Sukoon; it is a runtime and humidity machine and should never be bought to reach further. SOSA does not currently sell a separate Vaayu refill oil — the 400ml in the box is the supply available today, and hosts who need long-term continuity should confirm availability with SOSA before purchasing. The water-based Hotel Collection for ultrasonic machines is a different product and must not be used in a Vaayu. Warranty, service and bulk terms are not published here — ask SOSA directly. No claim is made anywhere on this page that scenting affects ratings, reviews, bookings, occupancy, health or air quality. Free shipping above ₹499, and a portion of every order supports girl-child education through Nanhi Kali.
Where most listings honestly stop
SOSA Sukoon · 500ml ultrasonic ₹1,899
If your measured connected volume came in under about 120m³ — and a great many two-bedroom listings do — this is the machine, and the ₹11,999 one would be coverage you pay for and then dial down. A 500ml tank runs sixteen to eighteen hours on low, which covers a full check-in evening, and the remote plus steady, two-hour and four-hour timers means the cleaner can set it and leave. Three 15ml Hotel Collection fragrances come in the box, so you can find the one you want to stand behind before you buy a larger bottle of it. It is water-based, so it does add humidity — worth knowing in a coastal monsoon.
SS
ISIPCA
Versailles
Versailles
A note from Sonal
The letters that reach me from hosts have a pattern. They almost never begin with a measurement; they begin with a purchase history. Two reed diffusers that were not enough, then an ultrasonic that was not enough, then a bigger ultrasonic that was somehow no better. Every one of those buys was a guess at a number nobody had told them to work out. Twenty minutes with a tape measure would have replaced all three.
I am also conscious that we sell every product on that ladder, which makes it easy to look like we are always recommending upward. So let me be explicit about the direction I actually recommend most often: down. The commonest correct answer for a host writing to me about a large-sounding listing is a ₹1,899 Sukoon in the living area and a reed diffuser behind each closed door, because the bedrooms were never part of the machine's job in the first place. The Vaayu earns its price in one specific situation — a genuinely large, genuinely connected volume that you also need to schedule and lock — and outside that situation it is an expensive way to buy a setting you will turn down.
The last thing I would say to any host is about promises. Scent gives your guest a considered arrival, and arrival is real and describable. It does not raise your rating, fill your calendar or change your nightly rate, and I have never seen a credible piece of evidence that it does. Buy it because you want the first ninety seconds of your property to be deliberate. That is reason enough, and it is the only one I am willing to stand behind. Composed and handmade in Pune; a portion of every order funds a girl's classroom through Nanhi Kali.
Frequently asked questions
What size scent machine do I need for a large Airbnb?
Size it to the connected common volume rather than the property. Measure the floor area that is still joined to the front door once bedroom and bathroom doors are shut, multiply by ceiling height, and divide by 35.3 for cubic metres. Under about 120m³ a Sukoon at ₹1,899 is right; above roughly 250–300m³ of open connected volume you need a cold-air machine such as the Vaayu at ₹11,999, which is rated up to 1000m³.
Does a 6L Megh cover more area than a Sukoon?
No, and this is the most persistent misunderstanding in the range. The Megh at ₹3,499 has a much larger tank and runs about 100 hours per fill, but it covers roughly 215 sq ft against the ₹1,899 Sukoon's 270–320. The 6L buys runtime and humidity output, not reach. If your problem is a bigger room, the Megh is not the answer at any price.
Should I count bedrooms when sizing a diffuser?
Only to work out how many reed diffusers to buy. A bedroom behind a closed door is a separate air system, and no central machine — at ₹11,999 or at any other price — pushes meaningful fragrance under a door. Most large listings end up running one machine for the connected common volume and a 130ml reed diffuser in each bedroom at ₹1,249–₹1,349, which lasts 14–18 weeks and needs nothing but a weekly flip.
Can I buy more fragrance for a Vaayu later?
Not from us at present. SOSA does not currently sell a separate Vaayu refill oil; the machine ships with four Hotel Collection fragrances at 100ml each, 400ml in total, quoted at 90+ days per fill. The water-based Hotel Collection at ₹299–₹1,799 is for ultrasonic machines and is not a Vaayu refill despite the shared scent names. If long-term supply is a condition of your purchase, ask SOSA what is currently available before you order.
Will scenting my Airbnb improve my reviews?
No one can tell you that, and we will not. There is no data connecting home fragrance to ratings, review scores, bookings, nightly rate or occupancy, and any seller quoting you a percentage on that is inventing it. What a scent machine genuinely does is make the first ninety seconds of an arrival deliberate and repeatable rather than accidental. That is an experience claim, it is honest, and it is the only one worth buying on.
Large Airbnb scenting · 2026
Measure the connected volume first. Then buy — and often you will buy smaller than you feared
Sukoon ₹1,899 for 270–320 sq ft with timers and three fragrances in the box. Vaayu ₹11,999 for up to 1000m³ of connected volume, waterless cold-air, 400ml tank at 90+ days a fill, app timers and key-lock, under 38 dB at 5W. Reed diffusers from ₹749 for every room behind a closed door. SOSA does not currently sell a separate Vaayu refill oil — ask us about availability before you buy if that matters to you. 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 scenting a large listing
- Best diffuser for a 2BHK Airbnb — why this size almost never needs the expensive machine.
- Best diffuser for a 3BHK and for a 4BHK — where the arithmetic turns over.
- How many diffusers does a large Airbnb need? — the counting method in full.
- The large Airbnb and villa scenting 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 how to size a scent machine to a large short-let property. The volume bands and the listing examples are arithmetic on stated specifications and SOSA's own working guidance from in-house testing and host correspondence — not laboratory measurements. Real coverage varies with ceiling height, ventilation, furnishing density and season. No claim is made that scenting a property affects its ratings, reviews, bookings, occupancy or revenue.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.