Set the level for the fuller room and then leave it alone. If your clinic is busiest between six and half past eight, that is the room you calibrate for - more people, more door cycles, more competing smell, more air moving - and having set it for that room you do not touch it again. The reason is arithmetic rather than principle. A level you raise at six in the evening is still raised at nine in the evening, when your last patient of the day is sitting alone in a quiet waiting room with nothing to do but receive it. You have optimised for eleven people and delivered the result to one.
And there is a second reason, which is about you rather than the room. The person whose hand is on that dial has been breathing that air since half past nine in the morning, and is the least reliable judge of it in the building. That is ordinary physiology, not carelessness - your nose adapts to a constant background and stops reporting it. So the six o'clock instinct to turn it up is very often not a report about the room at all. It is a report about your own adaptation, arriving at exactly the hour when the room is busiest and you are most tired. A dial that gets nudged on that basis only ever travels in one direction.
What legitimately varies with the clock is the schedule: on before you open so the room has its character when the first person arrives, off when the clinic actually empties rather than at the hour printed on your board. That is what the Bluetooth app and timer on a SOSA Vaayu at ₹11,999 is genuinely for, and on a ₹1,899 Sukoon it is a line on your closing checklist with somebody's name against it.
Two standing limits before any of the detail. Nothing here is clinical advice and no SOSA product is a medical device, a clinical product, an infection-control product or an air-treatment device. The default in a physiotherapy practice is a scented reception and waiting area with treatment rooms, bays and cabins left unscented, and the treating clinician decides what may be in the air of a room where treatment happens - that decision overrides every recommendation on this page. And no claim is made here about what a fragrance does to a person, or about patients, appointments, footfall or revenue. The ceiling is narrow and I will state it plainly: ambient scent research supports improved evaluations of a space and its service, longer dwell and stronger recall, at moderate effect sizes.
What should change by time of day, then? The schedule, and only the schedule. On twenty or thirty minutes before your first appointment, so the room reads as itself when somebody walks in rather than switching on in front of them. Off when the clinic genuinely empties, which in a clinic with a heavy evening is later than your printed closing time and is a person's job, not a guess. Off overnight and off on closed days, because scenting an empty building all night achieves nothing except spending fragrance. The Vaayu at ₹11,999 has a Bluetooth app and timer and that is most of what an owner is actually buying.
Does a busier room really need more fragrance to be noticed? A fuller room does read a fixed level as quieter - there is more competing smell, more air moving through a door that is opening constantly, and attention is divided. That is real, and it is exactly why you calibrate for the fuller room rather than the empty one. What it is not is an argument for a moving level. You solve it once, at the top of the range you are willing to live with, and the quiet hours then sit under it. And remember the dwell arithmetic pulls the other way: a physiotherapy patient sits in your building for forty-five minutes to an hour, and a longer stay means a lower level, never a higher one.
The instinct is correct about the room. A reception with eleven people in it genuinely does read a fixed level as quieter than the same reception with two people in it. There is more competing smell in the air - outdoor air coming in on a door that is cycling constantly, wet soles in a monsoon week, bags, coats, the ordinary smell of people who have been somewhere else. There is more air movement, because every door cycle is a small exchange with outside. And attention is divided, which matters more than people expect: a person in a busy room is processing a queue, a receptionist and a form, while a person alone in a quiet room at nine in the evening has nothing to process except the room. So the same number reads differently in the two rooms. That part of the instinct is sound.
Where it goes wrong is the conclusion. The right response to "the level reads low when it is busy" is to set the level for busy and accept that it sits slightly under when it is quiet. The wrong response is to make the level follow the room, because a level that follows the room is a level that gets nudged, and a nudged level has no memory. Nobody nudges downward. In every practice where I have seen a dial move with the day, it has been at the top of its range within a month, and the owner has no idea when that happened, because the whole point of adaptation is that it is invisible from the inside.
Then there is the nine o'clock problem, which is the specific reason a heavy-evening clinic needs this answer more than a steady-footfall one. You have told me your evenings are the busy part of the day. That means the tail of your day is not a busy room gradually emptying and then closing - it is a busy room emptying into two or three late appointments, and those late patients are the ones sitting in a room that was set for a crowd that has gone home. They are also, very often, the patients with the longest continuous exposure to your waiting area, because a late appointment in a clinic that has run over means a longer wait. So the person receiving your highest level for the longest time is the person you were least thinking about when you raised it.
And then there is you. You, your receptionist and your physiotherapists have been in that air since morning. Eight to ten hours a day, five or six days a week, which is many multiples of any patient's exposure - your team are the most exposed people in the building and they are also the cap on the level. The reason a fragrance company should say this out loud is that it is commercially inconvenient: the customer who wants to buy more is the customer whose nose has stopped reporting the room. If the level feels absent to you at six in the evening, get somebody who has been outside for ten minutes to walk in and tell you what they meet at the door. That is your instrument. Your own nose at hour nine is not.
One thing that does change with the clock, and it is not the fragrance: the source load. A clinic with a heavy evening in a Pune monsoon month, roughly June to October with July the wettest, is taking wet footwear and dripping umbrellas through the door in its busiest hours, and the entrance matting that was adequate at eleven in the morning is a wet object by seven. The answer to that is matting, drainage and a mid-afternoon reset, in the order that never changes - source, then ventilation, then cleaning, then fragrance. Fragrance adds a smell and has never removed one. A portion of every SOSA order supports girl-child education through Nanhi Kali.
The practical test takes one evening and costs nothing. Pick a normal busy Thursday. At around seven, when the waiting area is as full as it gets, step outside for a full ten minutes - not two, ten, because that is roughly what it takes for your own nose to reset enough to be useful - and then walk back in through your own front door at ordinary walking pace and stop where a patient stops. Not where you stand. Where they stand. Write down one word for what you meet.
Then do the same thing at a quarter past nine, when it is down to your last appointment. Same door, same pace, same stopping point. If the seven o'clock walk reads as almost nothing and the quarter-past-nine walk reads as obviously scented, your level is already set for the quiet room and it is too high - which is the commonest finding, and the opposite of what the owner expected.
Better still, do not do it yourself. Ask somebody who does not work there. A courier, a supplier, a friend who will actually tell you. The single most useful sentence in this entire bank is the level is judged by somebody who has just come in from outside, and set by somebody who then leaves it alone.
Two more things before the detail. First, write the setting down. Not remembered, written: machine, position, register, setting, the date you set it and who set it. A setting that lives in somebody's memory is a setting that drifts, and in a clinic with several people on the desk across a long evening it will drift within weeks. Second, put a standing arrangement in place at the same time: anyone on your front desk can switch a named unit off without asking anybody. A patient or a staff member reporting a reaction to the air is a recalibration signal rather than a tolerance problem, and the response is that the level comes down or the unit goes off that day, with nobody required to justify it. I make no health or allergy claim in either direction, and nothing here is clinical advice.
What genuinely changes at six in the evening, and what does not
Three things decide this, and only one of them has anything to do with the clock. The first is dwell: how long one person is continuously in the air, which in a physiotherapy practice is long. The second is the volume you are actually scenting, which is smaller than the floor area suggests because a clinic is full of closed doors. The third is adaptation, which is why the dial moves at all.
Start with where you are. Wakad sits inside Pimpri-Chinchwad, adjacent to the Rajiv Gandhi Infotech Park at Hinjawadi and near the Mumbai-Pune Expressway, and it grew as the residential and mixed-use spillover from that park. The verified detail that matters to your question is the commuting pattern next door: Hinjawadi sees severe congestion between roughly eight and twelve in the morning and again between half past five and eight in the evening, and PMPML runs night bus routes. I am not going to tell you why your patients come when they come - you know that and I do not - but a clinic in the spillover belt of a park with a hard evening peak is an entirely coherent place to have the problem you have described, and it is not the problem a clinic with a flat all-day load has. That is the geography doing real work here: delete Wakad from this page and the question becomes a generic one about diffuser settings; keep it, and the question is specifically about what to do with a day that has one dense block at its end.
Now the arithmetic, because it reframes the shopping list. A clinic reception and waiting area of about 300 sq ft at a 9 ft ceiling is 300 multiplied by 9, which is 2,700 cubic feet, and 2,700 divided by 35.3 is about 76 cubic metres of air. If your ceiling is 8 ft rather than 9 - and in a small modern unit that is common - it is 300 multiplied by 8, or 2,400 cubic feet, which is about 68 cubic metres. A treatment cabin of 100 sq ft at 8 ft is 800 cubic feet, about 23 cubic metres. Set those against a SOSA Vaayu published for approximately 1000 cubic metres of connected air and the recurring finding of this whole bank falls out again: the machine is not your constraint, the setting is. A 76 cubic metre reception is roughly thirteen times smaller than the volume that machine is rated for. A 23 cubic metre cabin is more than forty times smaller. That is the real reason the answer to "should it be stronger in the evening" is no: you are already working at the bottom of a range, and the honest direction of travel in a small clinical room is down.
And keep the two Pune rooms in view, because they are a legitimate reason to change a setting and they are nothing to do with the hour. Roughly June to October is the wet season with the main rain June to September and July the wettest, indoor humidity at its annual peak in July and August, and a clinic that is closed up against rain. Mid-March to mid-June is hot - average highs around 35.6 to 37.9 degrees C in March, April and May - and, counter-intuitively, it is the driest part of the year, with the humidity trough sitting in February to April. A clinic running its air conditioning hard against dry heat is moving and exchanging air faster, which is why the same setting seems to vanish at three in the afternoon in April. Two seasons, two written settings, changed deliberately on a date and recorded. That is a different thing entirely from nudging a dial at seven in the evening.
Work out the real number for your own clinic rather than the one on the appointment card. A patient arrives a few minutes early because they do not want to be late. They wait - and in a clinic with a heavy evening block, a wait of ten to twenty-five minutes is normal rather than exceptional, because appointments run over and evening slots are stacked. Then they are treated for forty-five minutes to an hour, and then they often sit down again afterwards to book the next session or wait for somebody collecting them. Add it honestly and a routine visit is an hour and a quarter of continuous presence in your building. Some of your patients do that twice a week for six weeks.
That number is the whole argument. A level that reads as quietly elegant when you walk through the door has been accumulating in somebody's experience for the better part of ninety minutes by the time they leave, and on their ninth visit they are not meeting it for the first time - they know your room. The correct calibration target is not the person at minute one. It is the person at minute forty, who has nothing to do and no easy way to step outside.
This is also why the evening-intensity question answers itself once you write the two numbers next to each other. Raising the level for a busier room is raising it for a room full of people whose individual dwell has not changed at all. The crowd is transient; the sit is not. Each one of those eleven people is still going to be in your building for an hour and a quarter. The fact that there are more of them is a reason to place the unit better and to think about the door, not a reason to put more into the air that each of them is breathing for ninety minutes.
One more consequence of long dwell that owners rarely consider: a long sit is where a register stops being a first impression and becomes a room. A lobby register that is charming for ninety seconds can be tiring at minute fifty. That is not a claim about what the scent does to anyone, and I am not going to make one - it is an observation about how much of something anybody wants across an hour, which is less than they want across a minute. Set it so that a patient never has to think about it at all. If a patient can describe your fragrance to you unprompted, it is too high, no matter how nice they were about it.
A coverage rating assumes one connected body of air, and a closed door ends one volume and begins another. Scent does not travel through it. That single mechanism is what makes the standard clinical answer - a scented reception with unscented treatment rooms - a real arrangement rather than a polite fiction, and it is also what makes most of the floor area on your plan irrelevant to the machine you buy.
So count the volume you are actually scenting rather than the one on your lease. If your reception and waiting area together are about 300 sq ft at a 9 ft ceiling, that is 2,700 cubic feet, which divided by 35.3 is about 76 cubic metres. If a corridor of about 120 sq ft at the same height is permanently open to it, add 120 multiplied by 9, which is 1,080 cubic feet, about 31 cubic metres, giving roughly 107 cubic metres of genuinely connected air. That is the number. Not 1,400 sq ft, not the whole unit.
Then check the things that quietly break the zoning, because all four are common and all four are free to fix. A treatment room door propped open between patients for convenience, which turns two volumes back into one at exactly the moment the corridor is busiest. A self-closer that has failed, so a door that everybody believes is shut is standing four inches open all evening. A large undercut beneath a door, which is a legitimate ventilation path and must stay - I will never tell you to block a ventilation gap - but which does mean the separation is less complete than the drawing suggests, and the answer to that is a lower level in the reception rather than a seal anywhere. And the position of the unit itself: put it deep in the waiting area, away from the mouth of the corridor and out of the air conditioning supply airstream, because a unit sitting in a supply airstream has its output picked up, carried away and thinned before it ever reaches the room, and a unit in a dead corner never reaches the room at all. Placement beats output in almost every small premises I am asked about, and it costs nothing to change.
The last volume point is the one specific to a small unit, and it is the reason page 058 in this series exists. If your ceiling is 8 ft rather than 10, you have removed a fifth of the air in the room without changing a single square foot of your floor plan - 300 sq ft at 10 ft is 3,000 cubic feet, about 85 cubic metres, while the same 300 sq ft at 8 ft is 2,400 cubic feet, about 68. A low ceiling removes volume fast, and a smaller volume over-scents faster than anything else in this programme. If that describes your unit, everything on this page moves one notch lower still.
Which produces the single most predictable failure in commercial scenting: the dial that only ever goes up. Somebody who has been in the room since morning cannot find the fragrance, so they raise it. Tomorrow they still cannot find it, because they have adapted to the new level too, so they raise it again. Three weeks later a patient mentions it, politely, and the owner is astonished. Nobody in that story did anything unreasonable; the instrument was simply the wrong instrument.
The defences are all boring and all effective. Write the setting down - machine, position, register, setting, date, and the name of the person who set it - and keep that note where the machine is, not in a drawer. Give the dial an owner. In a clinic with three people on the desk across a long evening, "anybody can adjust it" means it will be adjusted, and by the person who is most adapted and most tired. Judge it from outside. Ten minutes out, then walk in and stop where a patient stops. Review it on a date, not on a feeling - I would look at it when the seasons turn, which in Pune is the start of the wet months around June and again when the dry heat sets in around the middle of March.
Now the dial that should follow your day. The schedule. Here is what a heavy-evening clinic actually wants: on twenty to thirty minutes before the first appointment, so the room reads as itself when somebody walks in rather than visibly starting up in front of them. Running through the day at the single written level. Off when the clinic genuinely empties - which in your practice is later than the closing time on your board, and which is a person's job on a checklist rather than a guess. Off overnight, and off on your closed days, because a machine scenting an empty building at three in the morning is doing nothing but spending fragrance.
This is what the Bluetooth app and timer on the SOSA Vaayu at ₹11,999 is genuinely for, and it is the feature most owners underestimate at the point of purchase and most value afterwards: the unit runs your hours, holds one number, and does not depend on anybody remembering. On the water-based ultrasonics - Boond at ₹899, Sukoon at ₹1,899, Megh at ₹3,499 - the equivalent is a named line on your opening and closing checklists.
And the thing I will never suggest, in any phrasing: do not close a window, shut a vent, turn down extraction or keep a door shut so that the fragrance lasts longer through a busy evening. A well-ventilated clinic is genuinely harder to scent, and I would rather tell you that than sell you the alternative. You compensate with placement, with a sensible level and with the schedule. Never by reducing the air exchange in a room where people are breathing for an hour at a time.
- Measure the connected volume: area times ceiling height, divided by 35.3.
- Set one level for your fullest hour, judged by someone in from outside ten minutes.
- Write it down - machine, position, register, setting, date, and who set it.
- Put the hours on a timer, and leave treatment rooms and cabins unscented.
One written level, one register, and the rooms that get nothing
Assume the room is dry, clean and properly aired, and the question is now genuinely about fragrance. The answer has three parts and only one of them is the register.
Part one: where. The reception and waiting area, and nothing else. Treatment bays, cabins, the exercise area and any room where treatment happens get nothing - not a lower setting, nothing at all. That is the default rather than a hedge, for two reasons. The clinician decides what is in the air of a room where they treat people, and a practice where the physiotherapists have not been asked has not made this decision properly. And the arithmetic agrees: a cabin of 100 sq ft at an 8 ft ceiling is 800 cubic feet, about 23 cubic metres, against a machine published for approximately 1000 cubic metres of connected air - more than forty to one. The smallest room in any building is always the one that over-scents fastest.
Part two: how much. One written level, set for your fullest hour, judged by somebody who has been outside for ten minutes, reviewed on a date rather than on a feeling. In a 76 cubic metre reception with a patient sitting in it for forty minutes at a stretch, that number is low. Lower than feels right when you set it, because you are the most adapted person in the building and you are setting it in the afternoon.
Part three: which register, which matters considerably less than the first two. There are seven in the water-based Hotel Collection, each SOSA's own hotel-inspired interpretation - SOSA is independent and not affiliated with, endorsed by or connected to any hotel brand. For a clinical reception the steer is narrow and it is a context steer rather than a taste one: dry, clean, unsweet, low, and identical every single day.
White Tea Serenity is white tea, aloe and cedar - clean, weightless and spa-like, and the register that most naturally reads as clean rather than as scented, which in a healthcare reception is the entire brief. Quiet Luxury is white tea, bergamot and cedar, hushed and polished, and it is what I would run given one decision and no information about your building. Forest Suite is cedarwood, vetiver and green leaves, grounding and green, the driest of the three and the one that reads most clearly as part of the building rather than as somebody's decision - which matters in a room full of people who did not choose to be there.
The ones I would keep out of a clinic, and I would rather lose the order than take it. Lobby Bar is citrus, pepper and amber, bold and playful and after-dark; turning a theatrical register down gives you a quiet theatrical register, not an appropriate one. Old-World Glamour is amber, violet and woods, plush and evening-elegant, and plush accumulates across a forty-minute wait in a way that dry does not. Warm Welcome is citrus, floral and sandalwood, a real hotel-threshold register and lovely at a threshold - in a room where somebody sits for the better part of an hour it is the start of the sweetness problem. Tea Garden is jasmine, green tea and white tea, the least risky floral in the collection because the jasmine sits inside the tea rather than on top of it; I would still keep a floral of any weight out of a clinical waiting area, because a floral reads as a choice somebody made, and that is what a patient notices on their ninth visit.
I will not rank those seven against each other on measured throw or longevity. SOSA does not publish that comparison and it would be dishonest to invent one, because the variables that dominate - connected volume, ceiling height, ventilation rate, how many people are in the room and the level you set - all belong to your clinic rather than to the blend.
| Scent | Why it suits the mood |
|---|---|
| White Tea Serenity · the reception, and the default | White tea, aloe and cedar. Clean, weightless and spa-like, and the register that most naturally reads as clean rather than as scented - the whole brief in a healthcare reception. One level, set for your seven o'clock room, and then untouched. If a patient can describe it to you unprompted, it is high. |
| Quiet Luxury · a premium waiting area with soft seating | White tea, bergamot and cedar. Hushed, polished and unsweet, and what I would choose with one decision and no information about the building. It carries a little presence across a reception without becoming the thing anybody thinks about on their ninth appointment, which is the correct test for a room people come back to twice a week. |
| Forest Suite · a dry, hard-surfaced reception | Cedarwood, vetiver and green leaves. The driest of the shortlist and the one that reads as structural rather than decorative, so it is received as part of the building rather than as a decision somebody made. Useful where the interior is timber, stone and planting and anything sweeter would announce itself across a long wait. |
| Nothing at all · every treatment bay, cabin and exercise area | Not a lower setting - nothing. A cabin of 100 sq ft at an 8 ft ceiling is 800 cubic feet, about 23 cubic metres, against a machine published for approximately 1000 m3 of connected air. The treating clinician decides what is in the air of a treatment room, and the closed door is the mechanism that makes a reception-only answer real. |
So the purchase, and it is deliberately small. For one enclosed reception and waiting area an ultrasonic is usually the whole answer: a SOSA Boond at ₹899 for a small enclosed room, or a SOSA Sukoon at ₹1,899 for a reception and waiting area, both running the water-based Hotel Collection from ₹299 with 100ml refills at ₹999 and 300ml also available. The pack of seven 15ml bottles at ₹1,799 is the sensible way to audition registers in your own air rather than from a description - and judge each one on day five rather than on the first afternoon, because the first afternoon is when your nose is least able to assess it.
One honest caveat in a wet month. The ultrasonics are water-based cool-mist machines, so they put a small amount of moisture into the air of the room they sit in, which in a July clinic that is already closed up is a plain design reason to prefer the waterless machine. That is a design preference and nothing more. No SOSA product controls humidity, dehumidifies, dries or protects anything.
The waterless machine is the SOSA Vaayu at ₹11,999: cold-air nebulising of undiluted oil, so no water, no humidity and no wet residue. Rated for approximately 1000 cubic metres of connected air, with SOSA's own copy also stating 2,000 to 3,000 sq ft scented evenly. Bluetooth app and timer - which on this page is the point rather than a feature - a 400ml tank, freestanding or wall and HVAC mount, DC 12V / 1A at 5W so it needs a live socket, and CE, RoHS and SGS. For a single-unit Wakad clinic it is far more machine than the volume requires, which is exactly why the instruction is to run it low. Two systems, and they are not interchangeable: the ultrasonics are water-based, while the Vaayu and the ducted machines - Aangan at ₹25,999 for approximately 8,000 to 10,000 sq ft and Meenar at ₹38,500 for approximately 12,000 to 18,000 sq ft - run waterless nebulising oil. The ₹299 water-based bottle never goes into a Vaayu.
If what you want is no plug, no noise and nothing to switch off, the SOSA reed diffusers are their own registers rather than Hotel Collection ones: Mountain Breeze ₹849 is Himalayan pine, sage and cedar and the closest to a dry clinical direction; Morning Freshness ₹749 is Malabar lemon, mint and eucalyptus; Garden Bloom ₹799, Evening Calm ₹799 and Fresh Brew ₹849 complete the set. 130ml from ₹1,249, refills at ₹2,399 and ₹3,499, and about 6 to 10 weeks of life. A reed is passive and local - it scents the few feet around it and will not fill a clinic - and it has no setting at all, which on this page is worth noticing: it cannot be nudged up at six in the evening, which is a genuine advantage, and it also cannot be scheduled or turned down for a season, which is a genuine limitation.
To go further than this page does: if your unit has a low ceiling and small doored cabins, the arithmetic changes hard and it is set out properly in whether commercial fragrance becomes too strong very quickly in a low-ceilinged Wakad office with small cabins. If you are still deciding between a machine and something passive on the desk, the format question answered by volume and dwell rather than by price is how a small premium business in Wakad should choose between reed diffusers and active commercial scenting. And if this clinic is about to become two clinics, the matching problem is whether a second PCMC location should carry the same signature scent as your Pune site.
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 run hours, connected volume and setting, and they are yours rather than ours. Send your floor plan to WhatsApp at +91 96192 18531 instead. Bulk orders are welcome, custom label or logo on product is available, and bespoke composition made only for your practice is a real SOSA service discussed there rather than priced on a page - although the cheaper honest answer comes first, which is that one of the seven registers held consistently already is a signature, because consistency makes a signature and uniqueness does not.
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.