★ SOSA Vaayu · how many diffusers
The right number of diffusers is not a product decision. It is a counting exercise you can finish in one walk through the property
★ ★ ★ ★ ★
★★★★★
"I counted eleven closed doors and two floors and suddenly the shopping list made sense. I had been guessing for a year."
Five-bedroom villa · counting
★★★★★
"Turns out I had been over-buying. Three bottles came out of the terrace and the utility where they were doing nothing at all."
Villa host · audit
★★★★★
"The walk-through method took twenty minutes and saved me from buying a second machine I did not need."
3BHK listing · planning
★★★★★
"Ceiling height was the number I had never measured. My living room holds twice the air of my neighbour's for the same floor plan."
Double-height living room
★★★★★
"One source per closed door is a rule my housekeeping team can actually follow. That matters more than the theory."
Four-bedroom villa · turnover
★★★★★
"I stopped scenting the balcony. Obvious in hindsight — the air changes completely every few minutes out there."
Villa owner · placement audit
★★★★★
"I counted eleven closed doors and two floors and suddenly the shopping list made sense. I had been guessing for a year."
Five-bedroom villa · counting
★★★★★
"Turns out I had been over-buying. Three bottles came out of the terrace and the utility where they were doing nothing at all."
Villa host · audit
★★★★★
"The walk-through method took twenty minutes and saved me from buying a second machine I did not need."
3BHK listing · planning
★★★★★
"Ceiling height was the number I had never measured. My living room holds twice the air of my neighbour's for the same floor plan."
Double-height living room
★★★★★
"One source per closed door is a rule my housekeeping team can actually follow. That matters more than the theory."
Four-bedroom villa · turnover
★★★★★
"I stopped scenting the balcony. Obvious in hindsight — the air changes completely every few minutes out there."
Villa owner · placement audit
✓ Reed diffusers from ₹749 (6–8 weeks) · 130ml from ₹1,249 (14–18 weeks) · six fibre reeds ✓ Boond ~150 sq ft · Sukoon 270–320 sq ft · Megh ~215 sq ft (runtime, not coverage) · Vaayu up to 1000m³ ✓ Vaayu ships with 400ml of cold-air fragrance — no separate Vaayu refill is sold today
Founder Diaries · Large-Space Scenting · How Many Diffusers
Count doors before floors. A closed bedroom door blocks fragrance more completely than forty feet of open floor does.
Measure volume, not area. Floor area times ceiling height. A 400 sq ft room at 18 ft holds 7,200 cubic feet against 4,000 at 10 ft — nearly twice the air for the same plan.
The bands: under ~300 sq ft connected, one Sukoon or two reed diffusers. 300–800, a Sukoon plus reeds. 800–2,000, the crossover. Above 2,000 sq ft and up to 1000m³, one Vaayu.
Sukoon₹1,899 · 270–320 sq ftNow take the spaces that are connected — entrance, living, dining, an open kitchen — and measure them as a single volume. Multiply the combined floor area by the ceiling height, and if part of it is double-height, measure that part separately and add it. A 1,200 sq ft common floor at 10 ft is 12,000 cubic feet, about 340m³; add a 300 sq ft double-height section at 18 ft and you have added another 2,400 cubic feet on top of what you already counted. Divide cubic feet by 35.3 to get cubic metres, which is the unit the Vaayu's 1000m³ figure is quoted in. Then repeat per floor. Each floor with a common space gets one common-space source; the coverage numbers — around 150 sq ft for a Boond, 270–320 for a Sukoon, up to 1000m³ for a Vaayu — describe connected air only.
Reeds · one per closed doorfrom ₹749Shop → 
Sukoon · 270–320 sq ft₹1,899Shop → 
Vaayu · up to 1000m³₹11,999Shop →
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.
Hosts ask this as a product question and it is not one. The number of diffusers a large property needs is decided by the property, and you can work it out in a single walk-through with a phone and a tape measure. Count the doors that get closed between guests. Count the floors. Measure the one connected volume that everybody actually stands in. Subtract the spaces where fragrance cannot survive. What comes out the other end is a list of sources, and only then does it become a question of which ones to buy. Almost every host who does this discovers two things at once: they need more small sources than they thought, and fewer large ones.
Quick answers — read this first
The method in one line: one source per door your cleaner closes, plus one source per floor of connected common space, minus everywhere outdoors.Count doors before floors. A closed bedroom door blocks fragrance more completely than forty feet of open floor does.
Measure volume, not area. Floor area times ceiling height. A 400 sq ft room at 18 ft holds 7,200 cubic feet against 4,000 at 10 ft — nearly twice the air for the same plan.
The bands: under ~300 sq ft connected, one Sukoon or two reed diffusers. 300–800, a Sukoon plus reeds. 800–2,000, the crossover. Above 2,000 sq ft and up to 1000m³, one Vaayu.
The short answer
Short answer: for a typical large Indian listing the count lands between five and ten sources, most of them small. A four-bedroom property over two floors usually needs one machine for the common floor, one reed diffuser in each bedroom, one in each guest bathroom and one on the landing — which is eight or nine sources, of which exactly one is expensive. The instinct to solve it with a single powerful machine is the instinct that leaves five closed rooms smelling of nothing.
The counting method: walk the property the way a guest does. Write down every space with a door that is closed during or after a turnover — bedrooms, bathrooms, the study, the utility. That is your first number, and each one needs its own small source. Then count floors, because each floor is a separate body of air. Then measure the connected common space in cubic feet and convert to cubic metres by dividing by about 35.3. Finally, cross off terraces, balconies and anything open to the outside, where air exchange defeats every format at any price.
In this guide
Two closed rooms at once
Day & Night duo · ₹1,498
One normal room, on demand
Sukoon · ₹1,899
One whole common floor
Vaayu · ₹11,999
Straight answer
How many diffusers does a large Airbnb actually need?
1. Count the closed doors first. Every space whose door is shut during or after a turnover is a sealed volume that receives nothing from anywhere else. Bedrooms, bathrooms, the study, the store. Each needs its own source, and it can be the cheapest kind: a 50ml reed diffuser at ₹749–₹849, six fibre reeds, no power point, nothing a guest can spill.
2. Count the floors second. Each floor is its own body of air, connected to the others only by a stairwell that moves air vertically on its own terms. One common-space source per floor that has a common space.
3. Measure the connected common volume, in cubic feet. Length times width times ceiling height, added across the rooms that open into one another with no door between them. Divide by 35.3 for cubic metres. This is the only number that decides whether you need a machine at all.
4. Subtract the unscentable. Terraces, balconies, verandahs, open decks and any room whose window stays open. Air exchange there is total and continuous; no format survives it, and money spent is money gone.
5. Now match to bands. Under about 300 sq ft of connected common space, one Sukoon at ₹1,899 or two reed diffusers. Between 300 and 800, a Sukoon plus reeds at the far end. Between 800 and 2,000 you are at the crossover and it becomes a judgement about turnover labour as much as coverage. Above roughly 2,000 sq ft, or up to 1000m³ of connected volume, one Vaayu at ₹11,999.
6. One caution about the big machine. The Vaayu ships with 400ml of cold-air fragrance rated at 90+ days a fill, and SOSA does not currently sell a separate Vaayu refill oil. Ask about availability before you buy if you need continuity.
7. And one honesty note. This page is about the guest's experience of a property, not about performance. No one can promise scenting changes a rating, a review, a booking or occupancy, and nothing here claims it does.
The Vaayu is made in India; our reed diffuser fragrances are composed and handmade in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
2. Count the floors second. Each floor is its own body of air, connected to the others only by a stairwell that moves air vertically on its own terms. One common-space source per floor that has a common space.
3. Measure the connected common volume, in cubic feet. Length times width times ceiling height, added across the rooms that open into one another with no door between them. Divide by 35.3 for cubic metres. This is the only number that decides whether you need a machine at all.
4. Subtract the unscentable. Terraces, balconies, verandahs, open decks and any room whose window stays open. Air exchange there is total and continuous; no format survives it, and money spent is money gone.
5. Now match to bands. Under about 300 sq ft of connected common space, one Sukoon at ₹1,899 or two reed diffusers. Between 300 and 800, a Sukoon plus reeds at the far end. Between 800 and 2,000 you are at the crossover and it becomes a judgement about turnover labour as much as coverage. Above roughly 2,000 sq ft, or up to 1000m³ of connected volume, one Vaayu at ₹11,999.
6. One caution about the big machine. The Vaayu ships with 400ml of cold-air fragrance rated at 90+ days a fill, and SOSA does not currently sell a separate Vaayu refill oil. Ask about availability before you buy if you need continuity.
7. And one honesty note. This page is about the guest's experience of a property, not about performance. No one can promise scenting changes a rating, a review, a booking or occupancy, and nothing here claims it does.
The Vaayu is made in India; our reed diffuser fragrances are composed and handmade in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
TL;DR: sources = closed doors + one per floor of common space − everything outdoors. A large four-bedroom listing usually lands on eight or nine sources, of which one is a machine and the rest are reed diffusers from ₹749. Measure volume, not floor area, and cross the terrace off the list.
The cheapest way to cover two closed doors
SOSA Day & Night duo · Morning Freshness + Evening Calm ₹1,498 / 2 × 50ml
Most of the count in a large listing is bedrooms and bathrooms, and both want a small permanent source rather than anything powered. This pairs Morning Freshness — Malabar lemon, peppermint and Nilgiri eucalyptus, 9.0 on our internal strength scale at six reeds — with Evening Calm, Kashmir lavender and chamomile at 8.9 and the softest thing we make. The bright one belongs in a guest bathroom, the quiet one in a bedroom. Both are alcohol-free and phthalate-free on a heat-stable CCT base, six to eight weeks per 50ml. The 2 × 130ml version is ₹2,498 and runs 14 to 18 weeks, which suits a property you visit rarely.
Part one — the counting method, in three passes
Do this once, properly, and you will not have to think about it again for years. It takes about twenty minutes in a four-bedroom property and it replaces the guesswork that leads hosts to own six diffusers and a still-unscented first floor. The principle is that you are counting bodies of air, not rooms, and the thing that separates one body of air from another is not distance but an obstruction — a shut door, a floor slab, an extractor running.
1
PASS ONE · DOORS
Walk the turnover, not the tour
Follow your cleaner's route at the end of a changeover rather than your own route as an owner, because the two differ in exactly the way that matters. At the end of a turnover the bedroom doors are shut, the bathroom doors are usually shut, the utility is shut and the study may be. Write down every one of those doors. That number is the number of small, permanent, unpowered sources the property needs, and it is almost always larger than the host expects. A source behind a closed door has one job — to be already working when the guest opens it — and a reed diffuser does that job better than anything electrical, because it never needs switching on, cannot be knocked over into a socket and has no tank to run dry mid-stay.
The count: in a four-bedroom villa with four en-suites, a study and a utility, that is ten doors before you have looked at a single open space.
2
PASS TWO · FLOORS AND VOLUME
Multiply by the ceiling, then convert
Sukoon₹1,899 · 270–320 sq ftNow take the spaces that are connected — entrance, living, dining, an open kitchen — and measure them as a single volume. Multiply the combined floor area by the ceiling height, and if part of it is double-height, measure that part separately and add it. A 1,200 sq ft common floor at 10 ft is 12,000 cubic feet, about 340m³; add a 300 sq ft double-height section at 18 ft and you have added another 2,400 cubic feet on top of what you already counted. Divide cubic feet by 35.3 to get cubic metres, which is the unit the Vaayu's 1000m³ figure is quoted in. Then repeat per floor. Each floor with a common space gets one common-space source; the coverage numbers — around 150 sq ft for a Boond, 270–320 for a Sukoon, up to 1000m³ for a Vaayu — describe connected air only.
The conversion: cubic feet ÷ 35.3 = cubic metres. It is the one piece of arithmetic this whole exercise needs.
3
PASS THREE · SUBTRACTIONS
Cross off the places nothing survives
The last pass is the one that saves money. Terraces, balconies, verandahs, courtyards and any room whose window is left open are not scentable at any price, because the air in them is replaced continuously and completely. A kitchen during cooking is the same problem in miniature with an extractor doing the replacing. Fragrance layered onto live cooking does not smell like fragrance and cooking; it smells like a third thing nobody designed. So the kitchen gets scented between meals, not during them: extractor on, window open ten minutes, close up, and give the source half an hour. And a general rule for hosts that applies everywhere in this list — ventilate first and scent second, always. A closed, empty property develops its own smell within days, and fragrance does not remove it. Nothing in our range cleans air, kills anything or eliminates an odour; it adds fragrance to air you have already cleared.
Part two — typical properties, counted end to end
Six real shapes of Indian listing, run through the method. Treat the totals as a starting point rather than a prescription — your ceiling heights, your door discipline and your ventilation will shift them. Indicative spend uses 50ml reed diffusers at ₹749–₹849 unless stated.
The counted properties
Doors, floors, connected volume and the resulting source count
| Property | Doors closed on turnover | Floors | Connected common space | Sources it needs | Indicative spend |
|---|---|---|---|---|---|
| Four-bedroom villa, two floors ★ | 9–10 | 2 | ~1,600 sq ft at 11 ft ≈ 500m³ | 1 Vaayu + 9 reed diffusers | ₹11,999 + ~₹7,200 |
| Studio, one floor | 1 (bathroom) | 1 | ~350 sq ft at 10 ft ≈ 99m³ | 1 reed diffuser + 1 bathroom reed diffuser | From ₹1,498 as a duo |
| 2BHK flat | 4 | 1 | ~450 sq ft at 10 ft ≈ 127m³ | 1 Sukoon + 4 reed diffusers | ₹1,899 + ~₹3,200 |
| 3BHK flat, open living-dining | 6 | 1 | ~700 sq ft at 10 ft ≈ 198m³ | 1 Sukoon (or 2 for a long plan) + 6 reed diffusers | ₹1,899–₹3,798 + ~₹4,800 |
| 4BHK duplex | 8 | 2 | ~1,100 sq ft at 11 ft ≈ 343m³ | 1 Vaayu on the lower floor + 8 reed diffusers | ₹11,999 + ~₹6,400 |
| Six-bedroom villa, three floors | 13–14 | 3 | ~2,400 sq ft at 12 ft ≈ 815m³ | 1 Vaayu on the common floor, 1 Sukoon for the upper lounge, 13 reed diffusers | ₹11,999 + ₹1,899 + ~₹10,400 |
| The honest caveat: the reed diffuser column is a repeating cost — a 50ml lasts six to eight weeks, a 130ml at ₹1,249–₹1,349 lasts 14 to 18, and oil-only refills at ₹2,399 for 300ml or ₹3,499 for 500ml bring the per-millilitre cost down to roughly ₹7–8 against ₹15–17 for a fresh bottle. The Vaayu is a one-off ₹11,999 and ships with 400ml of cold-air fragrance at 90+ days a fill — but SOSA does not currently sell a separate Vaayu refill oil, so a host planning a full season of continuous running must check current availability with SOSA before ordering. The water-based Hotel Collection is for ultrasonic machines and is never a Vaayu refill. | |||||
Shop this guide
The three tiers the count usually lands on
Reeds · one per closed doorfrom ₹749Shop → Sukoon · 270–320 sq ft₹1,899Shop → Vaayu · up to 1000m³₹11,999Shop →
The SOSA principle
You are not counting rooms. You are counting bodies of air, and a shut door makes two out of one.
Which is why a large listing needs many cheap sources and at most one expensive one — the opposite of the shopping list most hosts arrive with.
Part three — where hosts over-buy, and the count that says stop
The commonest over-purchase in this category is the second machine. A host buys a Sukoon for the living room, finds the dining end still quiet, and buys another. Usually the count says the problem was not output but placement — the first unit was in dead air, low down and behind furniture, in a corner nobody walks past. Before the second machine, move the first: waist to chest height, near a doorway or the route people actually take, several feet clear of an air-conditioning vent or a fan, out of direct sun. A directed draught across any source does the opposite of what you hope, stripping it and emptying it early while the room reads as empty. That correction is free and it resolves a surprising share of the cases that arrive in my inbox as a coverage complaint.
The second over-purchase is the Megh, bought as a step up because it costs ₹3,499 and holds six litres. It is a fine machine and it is not a coverage upgrade: it covers around 215 sq ft, which is less than the ₹1,899 Sukoon's 270–320 sq ft. What the six litres buys is roughly a hundred hours of runtime between refills, and what the volume of mist does is add noticeable humidity — genuinely useful in a dry Delhi winter, actively unhelpful in a coastal villa in August. Buy it for runtime or for humidity. Never buy it to reach further, and be careful of both in a monsoon.
The third is spending on the terrace, the balcony and the porch, which between them can account for a third of a villa's photographed area and none of its scentable volume. And the fourth, which is less a purchase than a habit, is buying more sources to fix a smell that ventilation would have removed. A property that has been shut for nine days does not need more fragrance on arrival day; it needs windows open for twenty minutes and then fragrance. That order — air first, scent second — is the single cheapest improvement available to any host, and it costs the cleaner ten minutes.
Many cheap sources and at most one expensive one. That is what the count almost always says.
— Sonal Sahani, SOSA
Part four — the walk-through worksheet
Six things to write down, in the order you should write them. Take the tape measure; the ceiling height is the number hosts most often guess and most often get wrong.
The counting worksheet
Six numbers, and what each one decides
| Count this | How to count it | What it decides | Typical answer |
|---|---|---|---|
| 1. Doors closed on turnover ★ | Follow the cleaner's route, not the owner's tour | The number of small unpowered sources you need | 6–14 in a large listing |
| 2. Floors with a common space | Ground, first, upper lounge — not the stairwell itself | How many powered sources, at most | 1–2 |
| 3. Connected common area | Add only the rooms that open into each other with no door | Which coverage band you are in | 450–2,400 sq ft |
| 4. Ceiling height, per zone | Tape measure, and measure double-height sections separately | Converts area into the volume that actually matters | 10–18 ft |
| 5. Openings that stay open | Balcony doors, courtyard, windows housekeeping leaves ajar | What to subtract entirely from the plan | Cross them off |
| 6. Who touches it between guests | Whether anyone is on site weekly to flip reeds and check levels | Whether passive sources are practical at all for you | Decides reeds vs machine |
Honest notes for buyers: the coverage bands here are manufacturer specifications for connected air — Boond ₹899 at around 150 sq ft, Sukoon ₹1,899 at 270–320 sq ft, Megh ₹3,499 at about 215 sq ft and a runtime-and-humidity machine rather than a coverage upgrade, Vaayu ₹11,999 at up to 1000m³ or roughly 2,000–3,000 sq ft. They vary with ceiling height, ventilation, intensity setting and season. Reed strength figures are positions on SOSA's own internal scale at six reeds, not an industry standard. Reed refills are oil only and reeds are not sold separately; refresh them every few months. Reed oil never goes in a machine, the water-based Hotel Collection never goes in a reed bottle, and neither goes in a Vaayu, which runs undiluted cold-air oil. SOSA does not currently sell a separate Vaayu refill — ask before you commit if long-term supply matters. Warranty, AMC and installation terms are not confirmed here; check with SOSA. Nothing on this page is a health, mood or air-purification claim, and no claim is made that scenting affects ratings, reviews, bookings, occupancy or revenue.
The smallest thing on the list
SOSA Boond · 300ml ultrasonic ₹899
Worth knowing about when the count throws up a small connected space that wants something switchable — a snug, a home-office corner, a compact upper landing with a socket. Around 150 sq ft, roughly six hours from a fill, USB powered with a colour night light. It runs the water-based Hotel Collection at ₹299 for 15ml, and like every ultrasonic it puts a little moisture into the room along with the fragrance, which is a consideration in a coastal property in the monsoon. For a closed bedroom I would still choose a reed diffuser: nothing to switch on, nothing to run dry, nothing a guest can knock into a socket.
SS
ISIPCA
Versailles
Versailles
A note from Sonal
When a host writes to ask how many diffusers they need, I ask for two numbers back: how many doors get closed at the end of a clean, and how high the living room ceiling is. Nine times out of ten neither has been counted, and the answer arrives with an apology. It is not a failing — nobody thinks about their house in cubic metres. But those two numbers do more work than any product page can.
What I like about counting is that it usually reduces the bill rather than raising it. The property that arrives believing it needs three machines nearly always needs one machine and eight small bottles, and the small bottles are the part that fixes the complaint the guest would actually have noticed — the bedroom door opening onto nine days of shut air.
I would also gently ask hosts to hold their expectations at the right size. A scented arrival is a nice thing and a real thing. It is not a performance lever, and I will not pretend it is one. Buy it because you would like the house to feel looked after. Everything we make is composed and handmade in small batches in Pune, and a portion of every order funds a girl's classroom through Nanhi Kali.
Frequently asked questions
How many diffusers does a 4BHK Airbnb need?
Typically eight or nine sources: one for the connected common space and one behind each door that gets closed on turnover — four bedrooms, three or four bathrooms and the utility. If the common floor runs past about 800 sq ft of connected area, the common-space source is the one worth spending on; the rest can be 50ml reed diffusers at ₹749–₹849.
Is it better to have one big diffuser or several small ones?
Both, in different places. Small passive sources are right for closed rooms because they work with the door shut and need nothing switched on. One larger source is right for the connected common space because output per source is fixed and no number of reed diffusers adds up to propulsion across a big open volume. The mistake is choosing one strategy for the whole property.
Do I need a diffuser in the kitchen?
Rarely, and never as a way of managing cooking smells. The extractor governs that air, and fragrance layered onto live cooking produces a third smell nobody wanted. If the kitchen opens into the living space it is already counted as part of the connected volume. Ventilate during and after cooking, then let the common-space source re-establish over half an hour.
Should I count the balcony or terrace?
No. Air exchange outdoors is continuous and complete, so no diffuser of any type or price holds a scent there. Cross those areas off before you calculate anything, and if your listing has a large open verandah adjoining the living room, remember that the doorway between them is exporting your connected volume every time it is open.
How much fragrance oil will all of this use in a year?
For reed diffusers the honest arithmetic is a 50ml every six to eight weeks per position, or a 130ml every 14 to 18 weeks; oil-only refills at ₹2,399 for 300ml and ₹3,499 for 500ml work out around ₹7–8 per millilitre against ₹15–17 for a new bottle. For the Vaayu, the box holds 400ml specified at 90+ days a fill — but there is no separate Vaayu refill on sale at the time of writing, so plan on the strength of what is in the box and confirm the current position with SOSA.
How many diffusers · 2026
Count the closed doors, then the floors. The shopping list writes itself
Reed diffusers from ₹749 for 50ml (6–8 weeks) and ₹1,249 for 130ml (14–18 weeks), six fibre reeds in every bottle; duo sets from ₹1,498. Boond ₹899 for around 150 sq ft, Sukoon ₹1,899 for 270–320 sq ft, Megh ₹3,499 for about 215 sq ft — a runtime and humidity machine, not a coverage upgrade. Vaayu ₹11,999 for up to 1000m³ of connected volume, with 400ml of cold-air fragrance in the box and no separate refill currently sold. Free shipping above ₹499, and a portion of every order supports girl-child education through Nanhi Kali.
See the Vaayu → Duo from ₹1,498
Continue the read
More on sizing a large listing
- Best scent machine for a large Airbnb — sizing to connected volume rather than bedroom count.
- How to fragrance a multi-floor villa — why the stairwell is a chimney and not a duct.
- One machine or many reed diffusers? — the turnover-labour arithmetic behind the count.
- The large Airbnb and villa scenting guide — the whole cluster 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, setting out a counting method for sizing fragrance across a large rental property. The property examples and their volumes are illustrative arithmetic on stated floor areas and ceiling heights, not measurements of specific listings; source counts are working guidance rather than a specification. Coverage figures are manufacturer specifications for connected air. Nothing here is a health, wellness or air-quality claim, and no claim is made that scenting affects 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.