That is the answer, and the rest of this page is the reasoning and the method, because the difficult part is not knowing that the settings should differ. The difficult part is making the change a decision instead of a habit. Almost every commercial space I am asked about has a scent level that nobody decided. It drifted. Somebody turned it up in April because the floor felt thin at four o'clock, nobody turned it back down in July, somebody else turned it up again in November because the shop felt characterless on a cool morning, and by the following March the machine is running at a number that no single person ever chose and nobody can justify. A nudged setting always ratchets upward, because a nose that has adapted always asks for more. That is the failure this page is really about.
The reason Pune specifically needs written settings is that it has unusually distinct indoor seasons for an Indian metro, and the reason is geographic rather than meteorological. The city sits about 570 m up on the western margin of the Deccan Plateau, on the leeward, rain-shadow side of the Sahyadri range. The hot season runs mid-March to mid-June, peaks in April and May with average highs in the region of 36 to 38 degrees C, and - the part that reverses most advice - those hottest months are also the driest of the year, with the humidity trough sitting in February to April and the peak in July and August. The monsoon runs roughly June to October, with the heaviest rain June to September and July the wettest month, and monsoon temperatures are mild rather than hot. Then winter, December and January, with days around 29 degrees C and nights below 12 - genuinely cool by Indian metro standards, and roughly 8 degrees colder at night than Mumbai in the same weeks, with a much wider daily swing between afternoon and dawn. Three genuinely different rooms in one building.
And the usual limits, said early rather than buried. Fragrance adds scent and does not remove odour. No SOSA product treats, filters, dries, dehumidifies, cools or purifies air. SOSA will never suggest reducing ventilation so a fragrance lasts longer, in any phrasing. And the ceiling on what ambient scent honestly does is improved evaluations of a space and its service, longer dwell and stronger recall, at moderate effect sizes - nothing about sales, footfall or what a scent does to a person.
How many settings do I actually need? Two for most Pune businesses and three for a few. Two is a dry hot-season setting covering roughly mid-March to mid-June and a monsoon setting covering roughly June to October, with the cool, dry stretch of November to February usually sitting close to one of them. Three is worth the trouble if your building behaves very differently in winter - a floor that opens its doors on a cool morning, or a room with a strong afternoon sun load that changes character across the year. Fewer settings, decided properly and left alone, beat many settings that nobody reviews.
How do I stop staff nudging the level up all year? Take the decision off the floor and put it on a card. Write the register, the level, the run hours and the date on a card taped inside the cupboard next to the machine, and make changing it a named person's job on a named date. The Vaayu at ₹11,999 publishes a Bluetooth app and timer, which is exactly the feature that turns a setting into a stored decision rather than a dial. The one exception that must never need permission: anyone on the floor can switch a named unit off entirely if somebody reacts to the air - that is a recalibration signal, not a tolerance problem.
First, understand that you are setting for three different rooms in one building. The dry hot room runs roughly mid-March to mid-June and peaks in April and May: outdoor highs in the region of 36 to 38 degrees C, the driest air of the Pune year, and air conditioning running hard enough that circulation and exchange are both at their annual maximum. The wet room runs roughly June to October, with the heaviest rain June to September and July the wettest month: mild temperatures, indoor humidity at its annual peak in July and August, a building that is closed up, air that moves slowly, and - importantly - a room that often has a source problem rather than a level problem, which is a different page entirely. The cool room is November to February, sharpest in December and January: days around 29 degrees C, nights below 12, a genuinely wide daily swing, a system that barely has to work, and a building that in many businesses simply opens its doors in the morning because the outside air is pleasant. Those three rooms do not respond identically to the same number, and pretending they do is how a good setting goes wrong.
Second, decide each setting in the afternoon, with somebody else's nose. This is the methodological heart of the page and it is the step everybody skips. Olfactory adaptation is fast and complete: within a couple of minutes of entering a space you stop registering its constant background smell. By two in the afternoon you, your manager and every member of your floor team have been in that air for hours and none of you can read it. If you set the level from your own afternoon impression, you will set it too high, every single time, and you will do it again next season from the new, higher baseline. So the reading comes from somebody who has been outside for at least ten minutes - a colleague sent out for a walk, a courier, a delivery driver, the customer who has just come in. Ask them plainly: can you smell anything, and if so, is it pleasant or is it a lot? Two words is a sufficient answer. In a Pune April that outside person is also getting the largest sensory contrast anyone in your day will get, which is covered properly at why fragrance feels stronger immediately after customers enter from Pune's outdoor heat - and which argues for going lower, not higher.
Third, write it on a card, and put the card where the machine is. Not in a document. Not in somebody's memory. A physical card taped inside the cupboard next to the unit, or on the back of the unit itself, with five things on it: the register, the level, the run hours, the date this setting was decided, and the name of the person who decides changes. That card is the entire governance system and it costs nothing. Its job is to make a nudge visible - if the card says one thing and the app says another, somebody changed it without deciding it, and now you know.
Fourth, change on a date you choose. Pick the changeover dates in advance and treat them like any other seasonal task - the same week you service the air conditioning, the same week you change a window display, whatever rhythm your business already has. Approximately mid-March into the hot setting, approximately mid-June into the monsoon setting, approximately November into the cool setting if you keep three. Approximate is fine; the point is that it is a date rather than a feeling. Then verify once, the following week, with an outside nose, and adjust once if needed. Then leave it alone for the season.
Fifth, know which way each change goes, and do not assume. The hot-season change is usually a small increase in run hours rather than a large increase in intensity, because the room is turning over faster and because the arrival contrast is at its annual maximum. The monsoon change is very often a decrease, and sometimes the honest answer in July is to switch off entirely and fix a source, because fragrance over damp gives you damp-and-fragrance and most people find that worse than damp alone. The cool-season change is usually a decrease too, because the system is not stirring the room and the same output accumulates. Two of the three seasonal moves in Pune are downward, which is the opposite of what most people expect, and it is why an unwritten setting drifts upward year after year.
One thing that does not vary with any of it: your staff are in that air eight to ten hours a day and they are the cap on every one of these numbers. Whatever a customer experiences at the door, a level your team notices at the end of a shift is too high in every season. A portion of every SOSA order supports girl-child education through Nanhi Kali.
If you do one thing this week, go and find out what your machine is actually set to, and then find out who set it and when. In most businesses nobody can answer the second and third parts, and that is the whole diagnosis. A setting that no identifiable person chose on an identifiable day is not a setting, it is a sediment, and it is almost always higher than anyone would have chosen deliberately.
Then take the outside reading. Send someone out of the building for ten minutes - properly out, onto the street, not into a corridor - and have them walk back in through the customer entrance and say two words about what they receive. Do it at four in the afternoon in the hot season, because that is when your own judgement is least reliable and when the room is turning over fastest. Write the two words on the card with the date. That is your record, and in six months it will be worth more than any memory of what the shop was like.
Be honest about the direction of drift. A nose that has adapted asks for more, always - never for less. So every unwritten adjustment in a scented commercial space tends upward over time, and every business that has been running a diffuser for two years without a written setting is running it higher than it started. The card is not bureaucracy. It is the only mechanism that stops the ratchet.
On staff, twice, because it is the thing this industry gets wrong most often. Your team is in that air eight to ten hours a day, five or six days a week, which is many times any customer's exposure, and they are the most exposed people in the building. Their exposure caps the level in every season regardless of how the room reads to a visitor. And the standing arrangement is not a favour: anyone on the floor can switch a named unit off without asking a manager, immediately, without explaining themselves, and a reported reaction to the air is a recalibration signal rather than a tolerance problem. Write that on the same card as the setting. No health or allergy claim is made here in either direction, and nobody should ever be asked about how they personally smell or tolerate anything.
And the one seasonal instruction that never appears in this programme, in any wording: do not reduce ventilation, close a vent, block a grille or keep a door shut on an occupied room so the fragrance lasts longer. Not in the hot season when the building is working hardest, not in the monsoon when it is closed up already, not ever. A well-ventilated room is harder to scent, and you compensate with placement, schedule and a written level - never by giving people less air.
How many settings you actually need, and how to decide each one
Three questions decide how many settings you need and what each one should be, and none of them is about the fragrance.
The first is how differently your building actually behaves across the Pune year - which depends on your air conditioning, your doors, your sun exposure and whether you are open in the evenings. The second is who is allowed to change the number, which in an unwritten system is everybody and should be one person. The third is how you take an honest reading of a room you have been standing in all day, which is the part that quietly determines everything else.
Do the arithmetic once so the numbers on your card mean something. Floor area multiplied by ceiling height gives cubic feet; cubic feet divided by 35.3 gives cubic metres. A 1,000 sq ft unit at a 10 ft ceiling is 10,000 cubic feet, about 283 cubic metres. A 1,500 sq ft floor at 12 ft is 18,000 cubic feet, about 510 cubic metres. A 500 sq ft reception at 10 ft is 5,000 cubic feet, about 142 cubic metres, and a small doored cabin at 100 sq ft and 9 ft is 900 cubic feet, about 25 cubic metres. Set those against a SOSA Vaayu published for approximately 1000 cubic metres of connected air, and the finding that this whole bank keeps producing appears again: the machine is rarely the constraint. The setting is. A 25 cubic metre cabin is roughly forty times smaller than the volume that machine is rated for, which is why small rooms over-scent faster than anything else in this programme and why a seasonal number set for a large floor must never simply be copied into a small one.
One structural reminder that sits under all of it: a coverage rating assumes one connected body of air, and a door that stays shut ends one volume and begins another. Scent does not travel through a closed door. So if you have a floor and a doored room, you do not have one setting to write per season. You have two per season, and the small one is lower.
Two settings is the right answer for most Pune businesses. A dry hot-season setting covering roughly mid-March to mid-June, when outdoor highs run in the region of 36 to 38 degrees C, the air is at its driest of the year, and the air conditioning is working hardest. And a monsoon setting covering roughly June to October, when the rain is heaviest June to September with July the wettest month, temperatures are mild, indoor humidity is at its annual peak in July and August, and the building is closed up with slow-moving air. The cool, dry stretch from November to February usually sits close enough to one of those two that a third card is not worth the discipline it costs.
Three settings is worth it when your winter is genuinely a third room. The test is behavioural rather than meteorological: does your building operate differently in December and January? Pune's winter is genuinely cool by Indian metro standards - days around 29 degrees C, nights below 12, roughly 8 degrees colder at night than Mumbai, and a daily swing much wider than a coastal city's. If that means your doors stand open on a January morning because the outside air is pleasant, or your air conditioning is effectively off for hours at a stretch, or your evening trade runs into genuinely cool air, then December to February is a third room and it deserves its own number. If your building is sealed and conditioned identically in January and October, it is not.
What pushes a business towards three rather than two. A frontage whose doors open in cool weather and stay shut in hot weather, because that is the single biggest change in exchange rate a small premises can have. A strong afternoon solar load, which changes the room's own character across the year and is covered at how large glass windows and afternoon heat affect fragrance inside a Pune showroom. Evening trading hours, because a Pune evening in January is a different proposition from a Pune evening in May. And a building where the heating or cooling is genuinely off for part of the year rather than merely working less.
And a separate axis that people forget: settings per volume, not just per season. If your premises is a connected floor plus a doored consultation room, viewing room or office, those are two bodies of air and each needs its own number in each season. The small one is always lower - a 100 sq ft cabin at a 9 ft ceiling is about 25 cubic metres, and the same output that reads as quiet character across a 283 cubic metre floor is far too much in it. A coverage rating assumes one connected body of air, and a closed door ends one and begins another.
Resist the temptation to be clever about this. Four settings, or a setting per month, or a setting that varies by day of the week, sounds thorough and in practice becomes a system nobody maintains, which collapses back into somebody nudging a dial. Two properly decided settings that are genuinely reviewed and genuinely left alone beat six that exist only on paper. The discipline is the product here, not the granularity.
Here is the failure, and I see it in almost every business that has been running a diffuser for more than a year. A room feels flat on a particular afternoon. The person standing there - who has been standing there since ten in the morning, and whose nose stopped reporting the background four hours ago - opens the app and moves it up a step. Nobody records it. Two months later the same thing happens, for the same physiological reason, and it goes up again. Nobody ever moves it down, because the moment that would prompt a decrease is somebody walking in and finding it too much, and that person is a customer who does not tell you. The ratchet only turns one way.
So the rule is: one named person changes the setting, on a named date, and writes it down. Everybody else has exactly one power, and it is the important one - anyone on the floor can switch a named unit off entirely, without asking anybody, if somebody reacts to the air. That is not a contradiction of the rule, it is the safety valve that makes a controlled setting acceptable in the first place. A reported reaction is a recalibration signal, not a tolerance problem, and nobody has to justify the switch or explain themselves. No health or allergy claim is made in either direction, and nobody should ever be asked about how they personally smell or tolerate anything.
The card. Physical, cheap, and taped inside the cupboard next to the machine or on the back of the unit. Five lines: register, level, run hours, date decided, name of the person who decides changes. A sixth line if you keep a doored room: the same for that volume. The card's real job is to make a silent change visible. If the app says one number and the card says another, somebody adjusted without deciding, and that is information.
The timer is the other half of the governance. A setting that has to be remembered daily will not survive; a setting stored in a device will. The SOSA Vaayu at ₹11,999 publishes a Bluetooth app and timer, and in a business with staff this is most of its practical value - the machine runs your trading hours, holds the level you decided, and does not depend on whoever unlocks the door remembering what the number is meant to be. The ultrasonics - Boond at ₹899, Sukoon at ₹1,899 and Megh at ₹3,499 - are simpler machines for a single enclosed room, and there the discipline has to come from the card rather than the device.
And the review, which is one afternoon a season. A week after each changeover, take a reading from somebody who has been outside for ten minutes, adjust once if it is needed, write the date, and then stop. That is the entire maintenance burden of a properly run scented space: two or three afternoons a year. Compare that to what it replaces, which is a dial somebody touches whenever a room feels wrong, and it is obviously the better trade.
Olfactory adaptation. Within a couple of minutes of entering a space with a constant background smell, you stop registering it. This is normal, universal and fast, and it applies to everybody in your building equally. It means that by mid-morning you are effectively blind to your own room, and by mid-afternoon the entire team is. The practical consequence is uncomfortable: the people best placed to judge your fragrance are the ones least able to.
So the reading has to be borrowed. Send somebody out of the building for ten full minutes - onto the street, not into an internal corridor, because a corridor shares air with the space you are testing. Have them come back in through the customer entrance rather than a staff door, stop three steps inside, and say two words. Can you smell anything. Is it pleasant or is it a lot. That is the reading. Do not coach them, do not tell them what register it is, and do not ask a leading question, because people are obliging and will find what you describe. Alternatives that cost nothing: the courier, the delivery driver, a supplier who visits monthly and can tell you whether it has changed since last time, a friend who agrees to be honest.
Take it at the right time of day for the season. In the dry hot season, take it at four in the afternoon, because that is the peak of solar load and of air conditioning effort, and because it is when the room is furthest from how it read first thing. In the monsoon, take it at six in the evening after a full day of loading, which is when a damp room is at its most honest. In winter, take it in the morning, when a cool building that has been shut overnight is at its most concentrated. One reading per season at the season's most demanding moment is worth more than a dozen casual sniffs.
And take it twice in April specifically, once at eleven and once at four, because the dry hot season produces the widest within-day variation of the Pune year. Strong at eleven and thin at four is the classic pattern, and it points at air movement and placement rather than at level. If that is what you find, move the machine out of the supply airstream before you touch the number - which is set out fully at how constant air conditioning during a Pune summer affects commercial fragrance.
Then interpret honestly, and know which way to move. "I cannot smell anything" from an outside nose means you can go up a step. "It is nice, I noticed it" is the target and you change nothing. "It is a lot" means down, immediately, regardless of how it reads to you. And if what the outside nose reports is not your register at all but something else - damp, food, new paint, a warm-material smell, something from the air conditioning - then you have a source problem, and the order is not negotiable: source, then ventilation, then cleaning, then fragrance. Fragrance adds scent and never removes odour, and no SOSA product treats, filters, dries, dehumidifies, cools or purifies air. Laying a register over a source smell gives you both at once, and it makes the source harder to find.
One seasonal instruction that this programme never gives, in any wording: do not reduce ventilation, close a vent, block a grille or keep a door shut on an occupied room so a fragrance lasts longer. Not in a hot month, not in a cool one. Ventilation wins, a well-ventilated room is genuinely harder to scent, and the compensations are placement, run hours and a written level.
- Keep one register all year. Only the level and the run hours change by season.
- Decide each setting from a nose that has been outside ten minutes, not your own.
- Write register, level, run hours, date and the named decider on a card by the machine.
- Change on a chosen date, verify once a week later, then leave it alone.
One register, two or three written settings - and the card that makes it real
Now the part that does not change, and it is worth being firm about it because the seasonal-blend idea is the single most common wrong turn taken at this exact point. You do not need a summer scent and a winter scent. You need one register and two numbers.
The argument against seasonal blends is not aesthetic, it is structural. What a scented commercial space actually earns over time is recognition - the effect of somebody walking in for the fourth time and receiving a room that smells the way it smelled before, without ever consciously noticing that it does. That is the only thing that compounds, and it is the reason to hold a register for years rather than months. Switching in April and switching back in July resets it twice a year and leaves you with a space that smells pleasant and means nothing. If you want a signature, consistency makes a signature; uniqueness does not. That is also the cheaper answer, and it is the one I give before anybody asks about bespoke composition.
The Hotel Collection has seven water-based registers, each SOSA's own hotel-inspired interpretation, with SOSA independent and not affiliated with, endorsed by or connected to any hotel brand. Quiet Luxury is white tea, bergamot and cedar - hushed and polished, and my default for a commercial space with one decision and no information. White Tea Serenity is white tea, aloe and cedar, clean and weightless, and the one that reads as clean rather than scented, which suits a bright hard-surfaced interior and survives a low level gracefully. Forest Suite is cedarwood, vetiver and green leaves, grounding, green and the driest, and it reads as structural - part of the building rather than a decision. Tea Garden is jasmine, green tea and white tea, the least risky floral because the jasmine sits inside the tea. Warm Welcome is citrus, floral and sandalwood, a genuine threshold register. Old-World Glamour is amber, violet and woods, plush and evening-elegant. Lobby Bar is citrus, pepper and amber, bold, playful and after-dark.
Choose once, on the character of your business rather than the character of the season, and then hold it. If you are genuinely unsure, the pack of seven 15ml bottles at ₹1,799 is the sensible way to audition in your own air - and judge each one on day five rather than the first afternoon, because the first afternoon is exactly when your nose is least able to assess it. I will not rank the seven against each other on measured throw or longevity; SOSA does not publish that comparison and the variables that dominate belong to your building.
What does change, season by season, is a small number of things and they belong on the card. The level, moved by one deliberate step at a time. The run hours, which in a hard-running dry hot season are often the better lever than intensity, because a schedule works with the air exchange rather than against it. And occasionally the placement, if a display has moved or a seasonal layout has put the machine into a supply airstream it was not in before. That is it. Three variables, two or three cards, one register.
One system note that is genuinely seasonal rather than aesthetic. The ultrasonics are water-based cool-mist machines, so they put a small amount of moisture into the room they stand in; the Vaayu and the ducted machines nebulise undiluted oil with cold air, with no water, no humidity and no wet residue. In a Pune monsoon month, with indoor humidity at its annual peak in July and August, the waterless machine is the sensible design choice for that reason alone. In a dry April that objection largely falls away. Both statements are design preferences and neither is a claim to control humidity or dehumidify anything, because no SOSA product does that.
And the cap on every number on every card, in every season: your staff are in that air eight to ten hours a day, which is many times any customer's exposure, and they are the most exposed people in the building. A level they notice at the end of a shift is too high whatever it reads like at the door - and anyone on the floor can switch a named unit off without asking a manager, with a reported reaction treated as a recalibration signal rather than a tolerance problem.
| Scent | Why it suits the mood |
|---|---|
| The register · does not change, ever | Pick one of the seven and hold it for years. Quiet Luxury, white tea with bergamot and cedar, is the default with no other information; White Tea Serenity for a bright hard-surfaced interior; Forest Suite where you want the scent read as building rather than as decision. Switching by season resets the only thing that compounds, which is recognition. |
| The dry hot-season card · roughly mid-March to mid-June | Air at its driest of the year, outdoor highs in the region of 36 to 38 degrees C, air conditioning running hard, air moved and exchanged fastest. Usually a small increase in run hours rather than a large jump in intensity - and judged at four in the afternoon by a nose that has been outside, because the arrival contrast is at its annual maximum. |
| The monsoon card · roughly June to October | Mild temperatures, indoor humidity at its annual peak in July and August, a closed-up building with slow air. Very often a decrease, and sometimes an honest zero while a source is dealt with, because fragrance over damp gives you damp-and-fragrance. Judged at six in the evening after a full day of loading. |
| The cool-season card · November to February, only if your winter is a third room | Days around 29 degrees C, nights below 12, a wide daily swing and a system that barely works - and in many businesses doors that simply stand open on a pleasant morning. Usually a decrease, because nothing is stirring the room. Skip this card entirely if your building is conditioned identically in January and October. |
On the buying side, the seasonal-settings argument changes what is worth paying for, and it is worth being clear about that rather than defaulting to the biggest machine. What you are buying, for a business with staff, is a stored decision. The waterless SOSA Vaayu at ₹11,999 nebulises undiluted oil with cold air - no water, no humidity, no wet residue - and is published for approximately 1000 cubic metres of connected air, with SOSA's own copy also stating 2,000 to 3,000 sq ft scented evenly. It has a 400ml tank, freestanding or wall and HVAC mounting, a DC 12V / 1A 5W mains supply so it needs a live socket, and CE, RoHS and SGS. The Bluetooth app and timer is the part that matters here: it is what turns your card into something the building actually does, rather than something a person has to remember at half past nine every morning.
For one enclosed room - a consultation room, a viewing room, a small reception - the ultrasonics are usually the whole purchase: Boond at ₹899 for a small enclosed room, Sukoon at ₹1,899 for a reception, Megh at ₹3,499 with a 6 litre tank for a larger lounge running all day. All three run the water-based Hotel Collection from ₹299, with 100ml refills at ₹999 and 300ml also available. Two systems, and they are not interchangeable: the ₹299 water-based bottle never goes into a Vaayu or an HVAC machine. Where a whole ducted floor is the right scale, Aangan at ₹25,999 covers approximately 8,000 to 10,000 sq ft and Meenar at ₹38,500 approximately 12,000 to 18,000 sq ft, both ducted into HVAC and both decisions for whoever is responsible for that system.
And the option that has no settings at all, which is sometimes the right answer to this entire page. The SOSA reed diffusers have no plug, no noise and nothing to switch off or schedule: Mountain Breeze ₹849, Morning Freshness ₹749, Garden Bloom ₹799, Evening Calm ₹799 and Fresh Brew ₹849, with 130ml from ₹1,249, refills at ₹2,399 and ₹3,499, lasting about 6 to 10 weeks. A reed is passive and local - it scents the few feet around it and will not hold a floor - but if the honest answer for your business is a reception desk and a quiet baseline, a reed removes the seasonal-settings problem entirely by not having a setting.
To go deeper into the reasoning this page assumes: the seasonal contrast itself, and why an April room behaves differently, is in why a Pune showroom smells different during peak April and May heat; the mechanism of hard-running air conditioning is in how constant air conditioning during a Pune summer affects commercial fragrance; and the argument that a hot-season setting should go lower rather than higher is made properly in why fragrance feels stronger immediately after customers enter from Pune's outdoor heat.
What SOSA does not publish, and what this page will therefore not invent: consumption rate, refill frequency, monthly running cost, machine lifespan, minimum order quantity or installation lead time. Those depend on your run hours, your connected volume and your setting, which is exactly why they are yours rather than ours. Send your floor plan, ceiling height, trading hours and what your air conditioning actually is to WhatsApp at +91 96192 18531. Bulk orders are welcome, custom label or logo on product is available, and bespoke composition is a real SOSA service discussed there rather than priced on a page - though the cheaper honest answer comes first, which is that one of the seven registers held consistently already is a signature.
The SOSA scenting range
SOSA sells two different systems and one of the commonest mistakes is mixing them up. Size by the connected air volume of the room you are actually scenting - which in a boutique means the connected retail floor plus any viewing room that has a door of its own - floor area multiplied by ceiling height gives cubic feet, and cubic feet divided by 35.3 gives cubic metres. A door that stays shut ends one volume and begins another.
| Machine | System | What it is for | Price |
|---|---|---|---|
| SOSA Boond | Ultrasonic · water-based | A small desk or corner unit for one enclosed room - runs the water-based Hotel Collection | ₹899 |
| SOSA Sukoon | Ultrasonic · water-based | A larger ultrasonic for a reception or consultation room - Hotel Collection from ₹299 | ₹1,899 |
| SOSA Megh | Ultrasonic · 6L tank | A large-tank ultrasonic for a bigger lounge that runs all day | ₹3,499 |
| SOSA Vaayu | Waterless cold-air nebulising | The commercial machine - approx 1000 m3 of connected air, Bluetooth app and timer, no water and no humidity | ₹11,999 |
| SOSA Aangan | HVAC nebulising | Ducted scenting for approximately 8,000 to 10,000 sq ft | ₹25,999 |
| SOSA Meenar | HVAC nebulising | Ducted scenting for approximately 12,000 to 18,000 sq ft | ₹38,500 |
Two systems, and they are not interchangeable. The ultrasonics - Boond, Sukoon and Megh - run the water-based Hotel Collection from ₹299. Vaayu and the HVAC machines run waterless nebulising oil; the ₹299 water-based bottle never goes into a Vaayu. SOSA blends are SOSA's own hotel-inspired interpretations and SOSA is independent and not affiliated with any hotel brand. A portion of every order supports girl-child education through Nanhi Kali.
- Vaayu ₹11,999 - waterless cold-air nebulising, approx 1000 m3 connected air, Bluetooth app and timer, 400ml tank, freestanding or wall / HVAC mount, DC 12V / 1A, 5W, mains powered, CE / RoHS / SGS.
- Aangan ₹25,999 for approximately 8,000 to 10,000 sq ft and Meenar ₹38,500 for approximately 12,000 to 18,000 sq ft - both ducted into HVAC.
- The ultrasonics - Boond ₹899, Sukoon ₹1,899, Megh ₹3,499 - run the water-based Hotel Collection from ₹299, with 100ml refills at ₹999.
- Not published, and therefore never stated on this page: consumption rate, refill frequency, monthly running cost, machine lifespan, installation lead time or any minimum order. Those go to WhatsApp +91 96192 18531.
Versailles
SOSA is a Pune business, so these are not pages I wrote from a desk somewhere else. I have stood in a Baner clinic in the second week of July and in a Kharadi tower in the middle of April, and the useful thing I can tell you is this: the locality on your signboard is not a technical variable. Nobody scents a postcode. What a locality name is actually shorthand for is a cluster of real things - how old the building is, whether the front is sealed glass or a door onto a pavement, what the air conditioning genuinely is, how many people come through, how long each of them stays, and what the room already smells of.
Which is why two businesses three doors apart can need completely different answers, and why the same business needs two different answers in July and in April. A Pune monsoon room and a Pune April room are not the same room. One is damp, closed up and slow; the other is dry, hot, and running its air conditioning so hard that whatever you put in the air is being moved and diluted faster than you think. That is a real difference and it belongs in the settings, not in the choice of blend.
The order never changes, though, and it is the least commercial thing I say: source, then ventilation, then cleaning, then fragrance. Fragrance adds a smell. It has never once removed one. If your unit smells of damp, or new paint, or last night's food, a machine will give you damp and fragrance - and most people find that worse than damp. Fix the thing making the smell, get air moving, clean what holds it, and then, if the room deserves it, give it a quiet character and hold it.
Frequently asked questions
Facts verified September 2026: SOSA Vaayu ₹11,999 is a waterless cold-air nebulising diffuser rated for approximately 1000 m3 of connected air, with Bluetooth app and timer, a 400ml tank, freestanding or wall / HVAC mounting and a DC 12V / 1A, 5W mains supply. SOSA Aangan ₹25,999 covers approximately 8,000 to 10,000 sq ft and SOSA Meenar ₹38,500 approximately 12,000 to 18,000 sq ft, both ducted into HVAC. The ultrasonic machines - Boond ₹899, Sukoon ₹1,899 and Megh ₹3,499 - run the water-based Hotel Collection fragrance from ₹299, with 100ml refills at ₹999; that water-based bottle is not used in a Vaayu or an HVAC machine. Reed diffusers start at ₹749 and last roughly 6-10 weeks. A coverage rating assumes one connected body of air; scent does not travel through a closed door. Ambient scent research supports improved evaluations of a space and its service, longer dwell and stronger recall at moderate effect sizes - it does not support claims about bookings, fees or retention. Fragrance adds scent and does not remove, neutralise or purify odour, and no SOSA product makes any health, antibacterial or air-purifying claim. No SOSA product is an air-treatment device, an air purifier, a dehumidifier, a humidity-control product or an odour-removal product, and none makes any health, allergy, air-quality or occupational claim. No claim is made here about any effect on a customer, a patient, a purchase, a footfall figure or a business result. Nothing in this guide is clinical, facilities, HVAC, food-safety or building advice: in a clinical space the treating clinician decides what may be in the air, in a food business the kitchen and the applicable food-safety rules decide, and in any building the people responsible for its air and its maintenance decide - and their decision overrides every recommendation here. Descriptions of Pune's seasons and localities are general and qualitative; every figure about a specific building must come from that building. SOSA blends are SOSA's own hotel-inspired interpretations; SOSA is independent and not affiliated with any hotel brand. Prices and availability are subject to change - see the live product pages.