★ SOSA Vaayu · where to place the machine
In a clinic, placement is not an aesthetic decision — it is what keeps fragrance out of the clinical pathway, and it outranks the choice of machine
★ ★ ★ ★ ★
★★★★★
"Our installer wanted to tie the unit into the central AC. Reading that a clinic should never do that stopped a decision we could not undo."
Vaayu ₹11,999 · freestanding
★★★★★
"Three metres back from the corridor mouth, not facing it. That measurement changed how the consulting side smelled by afternoon."
practice manager · reception only
★★★★★
"The machine sat directly under a wall AC and we could not explain the unevenness. It was the vent, not the machine."
Sukoon ₹1,899 · repositioned
★★★★★
"Moving it off the counter and behind the desk line cost nothing and settled the whole complaint about it being noticeable."
reception only · lowest setting
★★★★★
"Useful on the return grille. Ours was two feet away, ducting scent through the building by accident."
clinic owner · arrival zone
★★★★★
"A checklist I could hand to our facilities contractor without having to explain the clinical reasoning myself."
Mountain Breeze 130ml ₹1,349
★★★★★
"Our installer wanted to tie the unit into the central AC. Reading that a clinic should never do that stopped a decision we could not undo."
Vaayu ₹11,999 · freestanding
★★★★★
"Three metres back from the corridor mouth, not facing it. That measurement changed how the consulting side smelled by afternoon."
practice manager · reception only
★★★★★
"The machine sat directly under a wall AC and we could not explain the unevenness. It was the vent, not the machine."
Sukoon ₹1,899 · repositioned
★★★★★
"Moving it off the counter and behind the desk line cost nothing and settled the whole complaint about it being noticeable."
reception only · lowest setting
★★★★★
"Useful on the return grille. Ours was two feet away, ducting scent through the building by accident."
clinic owner · arrival zone
★★★★★
"A checklist I could hand to our facilities contractor without having to explain the clinical reasoning myself."
Mountain Breeze 130ml ₹1,349
★ ★ Freestanding in reception — never into shared HVAC ₹11,999 Behind the desk line, out of the draught ₹1,899
✓ Reception and waiting only — examination, diagnostics, consultation and procedure areas stay fragrance-free ✓ Freestanding in the arrival zone only — never mounted into shared air-conditioning in a clinical building ✓ Free shipping above ₹499 · a portion of every order funds girl-child education
Founder Diaries · Eye Clinic Scenting · Machine Placement
Three metres or more from the corridor mouth, pointing away from it. This is the measurement that protects the clinical side. A source two feet from a corridor behaves nothing like the same source across the room.
Out of the draught, off the counter, not facing the chairs. A supply vent turns a source into a delivery system for wherever that air is going; a return grille is an accidental duct mount. Waist-to-chest, on a solid surface, out of patient reach.
What this page will not claim: fragrance does not calm anyone, shorten a wait, improve comfort or affect footfall, reviews or revenue. Nothing here is medical, clinical or safety advice, and none of it is guidance on ventilation standards or infection control — those are yours and your clinicians' entirely. Some people are sensitive to airborne fragrance, which is why the clinical pathway stays clear and a fragrance-free seat should always exist.
Sukoon₹1,899 · behind the desk lineAir-conditioning creates two hazards and they are opposites. A supply vent throws air across the room at speed, so a source in that throw is not diffusing into a room but injecting into a jet — and wherever the jet lands is where your fragrance lives, often the far corner or straight down the corridor. A return grille does the reverse, drawing air into the system, so a source beside one is feeding the ducting that serves the whole floor. That is an HVAC installation performed by accident, and it produces the exact outcome this cluster exists to prevent. Deliberate duct-mounting is worse again, and I would never specify it in a clinic whatever the machine supports. Find both the supply and the return before choosing a position — and note that a reed diffuser in a draught also empties in a fraction of its stated life.
Vaayu · freestanding, never ducted₹11,999Shop → 
Sukoon · behind the desk line₹1,899Shop → 
Mountain Breeze · on a tray, no draught₹849Shop →
SOSA range, specifications and prices used in this guide (verified August 2026): Vaayu ₹11,999 — waterless cold-air nebulisation of undiluted fragrance oil; no water, no heat, no added humidity, no white mineral dust. Coverage up to 1000 m³, about 2,000–3,000 sq ft. 400ml refillable tank lasting roughly 90+ days at a mid setting. Bluetooth app plus onboard controls, 1h / 4h / 8h / 24h run windows, day selection, adjustable intensity, auto-stop and key-lock. Under 38 dB. DC 12V / 1A, 5W. Freestanding or wall / HVAC mount. CE, RoHS and SGS certified. SOSA does not currently sell a separate Vaayu cold-air refill oil; the 400ml supplied in the box is the fragrance available at the time of writing, so a practice planning continuous or multi-site use should confirm current refill availability with SOSA before committing. The water-based Hotel Collection is made for ultrasonic machines and must not be used in a Vaayu. Other machines: Boond 300ml ₹899 (~150 sq ft, ultrasonic) · Sukoon 500ml ₹1,899 (270–320 sq ft, 16–18 hours on low, remote and steady/2H/4H timers, three 15ml fragrances included, ultrasonic) · Megh 6L ₹3,499 (~215 sq ft — a runtime and humidity machine that covers less than a Sukoon, never a coverage upgrade) · Safar ₹3,999 (waterless cold diffusion, cordless, 20ml, about 6.9cm, three speeds, 1/2/3-hour auto-off — sold as a car and travel diffuser, personal-scale only; SOSA publishes no coverage figure for it) · Aangan ₹25,999 (HVAC nebulising, ~8,000–10,000 sq ft) · Meenar ₹38,500 (commercial HVAC, 12,000–18,000 sq ft). Water-based Hotel Collection for ultrasonic machines: 15ml ₹299 · 100ml ₹999 · 300ml ₹1,799 · pack of seven ₹1,799; scents are inspired by the atmosphere of well-known hotels — SOSA is an independent Indian brand and is not affiliated with, endorsed by or supplying any hotel group. Reed diffusers ₹749–₹1,349 (50ml 6–8 weeks, 130ml 14–18 weeks, six fibre reeds, no 100ml size; replacement reeds are not sold separately). Reed oil cannot be used in an ultrasonic machine and Hotel Collection oil cannot be used in reeds. SOSA sells no room spray or home spray — every SOSA spray is a car perfume. Nothing in this guide is medical, clinical or safety advice. A fragrance diffuser adds a scent to the air. It does not clean, purify, filter, sanitise or disinfect air, does not remove or neutralise disinfectant, damp or occupancy smells, and has no effect on comfort, anxiety, waiting time, recovery or any clinical outcome. Some people are sensitive to airborne fragrance, which is why this guide recommends that examination rooms, diagnostic areas, consultation cabins, procedure suites and post-operative areas remain fragrance-free, that a fragrance-free seating option always exist, and that a diffuser is never mounted into shared HVAC in a clinical building. Decisions about clinical policy, ventilation standards, infection control and patient suitability rest entirely with the practice and its clinicians. A persistent stale, damp or disinfectant smell is a ventilation, moisture or cleaning problem — SOSA sells no dehumidifier and no air purifier, and fragrance should never be used to cover one. Coverage, runtime and longevity figures are manufacturer specifications and typical ranges, not guarantees, and vary with room volume, ceiling height, air exchange, occupancy and season. SOSA publishes no commercial or bulk pricing, no corporate account, no annual maintenance contract, no installation service, no stated warranty term and no multi-location programme; warranty length, spare parts, servicing and app platform availability are unconfirmed, and larger or multi-site enquiries should go through the contact page before any commitment. Composed and made in small batches in Pune, India. 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.
In a shop, placement is a question of even coverage. In an eye clinic it is the mechanism by which the whole recommendation stands or falls, because where the source sits decides whether fragrance stays in the arrival zone or turns up in the consulting rooms. That makes it a more consequential decision than which machine you buy, and the rules are unusually literal: several metres back from the corridor to consultation and not facing it, out of any air-conditioning draught, off the counter and out of the sightline from the chairs, and — in a clinical building — never mounted into shared ducting. Everything here sits inside the boundary this subject depends on: the clinical pathway stays fragrance-free. Reception and waiting are hospitality space; diagnostics, examination rooms, consultation cabins, the procedure suite and any post-operative area are clinical space, and nothing I sell goes into them.
Quick answers — read this first
Never into the HVAC. A Vaayu ₹11,999 can be freestanding or duct-mounted, and in a clinic only the first is acceptable: ducting sends fragrance to every room the system serves, including those that must stay clear. If an installer proposes it, decline.Three metres or more from the corridor mouth, pointing away from it. This is the measurement that protects the clinical side. A source two feet from a corridor behaves nothing like the same source across the room.
Out of the draught, off the counter, not facing the chairs. A supply vent turns a source into a delivery system for wherever that air is going; a return grille is an accidental duct mount. Waist-to-chest, on a solid surface, out of patient reach.
What this page will not claim: fragrance does not calm anyone, shorten a wait, improve comfort or affect footfall, reviews or revenue. Nothing here is medical, clinical or safety advice, and none of it is guidance on ventilation standards or infection control — those are yours and your clinicians' entirely. Some people are sensitive to airborne fragrance, which is why the clinical pathway stays clear and a fragrance-free seat should always exist.
The short answer
Short answer: freestanding, in the body of the arrival zone between the entrance and the seating; at least three metres from the mouth of the corridor to consultation and turned away from it; not in the throw of an AC supply vent and not beside a return grille; behind the desk line rather than on the counter; waist-to-chest height, on something solid, out of reach.
Why placement outranks the machine: every machine produces a plume that the room's air then carries somewhere. You are not choosing where the fragrance is; you are choosing where the air takes it next. In a building whose whole argument is that one half stays clear, position is the load-bearing decision — and it is free, so exhaust it before any purchase.
Shop: Sukoon ₹1,899 · Vaayu ₹11,999 · Mountain Breeze ₹849 / ₹1,349 · Morning Freshness ₹749 / ₹1,249. Free shipping above ₹499.
In this guide
Freestanding in reception only — the duct mount is not for a clinic
Vaayu waterless · ₹11,999
Behind the desk line, out of sightline, clear of paper records
Sukoon 500ml · ₹1,899
On a tray, out of reach and out of the door draught
Mountain Breeze · ₹849 / 50ml
Straight answer
Where does the machine actually go?
1. Freestanding, in the arrival zone, and nowhere else. Between the entrance and the seating rather than at either end — not in the corridor, not in a lobby leading only to clinical rooms, and not in any space the consulting side passes through.
2. At least three metres from the mouth of the corridor to consultation, and turned away from it. Corridors behave like flues, taking whatever is near their opening and carrying it. Distance and direction are free, and both matter more than the dial.
3. Out of every air-conditioning draught. Not in the throw of a supply vent, which will decide where your fragrance goes and rarely chooses well; and not near a return grille, because a source beside a return is an HVAC mount by accident, feeding the system that serves the whole floor. And never duct it in deliberately.
4. Off the counter, out of the sightline, not facing the chairs. A machine in plain view with a plume over it is read before anything is smelled, and a source aimed at a seating bank gives a strong row of chairs and a weak room. Behind the desk line at waist-to-chest height, on something solid, is nearly always the answer.
5. Out of reach, and away from what a clinic keeps near its desk. Patients, particularly children, should not be able to reach it. An ultrasonic such as a Sukoon adds humidity, so keep it clear of paper records, spectacle displays and equipment. A reed diffuser goes on a tray — the oil marks stone and wood — and out of the entrance draught, which strips the reeds and empties the bottle weeks early.
6. Keep a fragrance-free seat, and take nothing here as clinical advice. Some seats will be closer to the source than others; know which are furthest and let reception offer them. Ventilation standards, infection control, cleaning protocol and patient suitability are for you and your clinicians alone — I am advising on where an object stands in a waiting room.
Everything SOSA makes is composed and made in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
2. At least three metres from the mouth of the corridor to consultation, and turned away from it. Corridors behave like flues, taking whatever is near their opening and carrying it. Distance and direction are free, and both matter more than the dial.
3. Out of every air-conditioning draught. Not in the throw of a supply vent, which will decide where your fragrance goes and rarely chooses well; and not near a return grille, because a source beside a return is an HVAC mount by accident, feeding the system that serves the whole floor. And never duct it in deliberately.
4. Off the counter, out of the sightline, not facing the chairs. A machine in plain view with a plume over it is read before anything is smelled, and a source aimed at a seating bank gives a strong row of chairs and a weak room. Behind the desk line at waist-to-chest height, on something solid, is nearly always the answer.
5. Out of reach, and away from what a clinic keeps near its desk. Patients, particularly children, should not be able to reach it. An ultrasonic such as a Sukoon adds humidity, so keep it clear of paper records, spectacle displays and equipment. A reed diffuser goes on a tray — the oil marks stone and wood — and out of the entrance draught, which strips the reeds and empties the bottle weeks early.
6. Keep a fragrance-free seat, and take nothing here as clinical advice. Some seats will be closer to the source than others; know which are furthest and let reception offer them. Ventilation standards, infection control, cleaning protocol and patient suitability are for you and your clinicians alone — I am advising on where an object stands in a waiting room.
Everything SOSA makes is composed and made in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
TL;DR: freestanding, mid-zone, three metres or more from the corridor and facing away, out of the AC draught and clear of the return, behind the desk line, waist-to-chest, out of reach. Never ducted into shared HVAC in a clinic. A Sukoon ₹1,899 for 150–320 sq ft, a freestanding Vaayu ₹11,999 above that.
Freestanding in reception — and only freestanding
SOSA Vaayu · waterless cold-air, up to 1000 m³ ₹11,999
The specification sheet offers a wall or HVAC mount, and in a clinical building I would use neither: ducting fragrance into shared air-conditioning distributes it to every room the system serves, which is the outcome this whole subject exists to prevent. Freestanding in the arrival zone, set back from the corridor, is the correct installation. Everything else about the machine suits a clinic well: waterless cold-air nebulisation of undiluted oil, nothing visible leaving it and no added humidity, under 38 dB, 5W, a Bluetooth app with 1h / 4h / 8h / 24h run windows, day selection, adjustable intensity and a key-lock. Coverage to about 1000 m³, roughly 2,000–3,000 sq ft, so it is justified only past about 320 sq ft of connected public area. No separate cold-air refill oil is sold at present; the 400ml in the box is the supply, so confirm availability before committing.
Part one — the three placement rules
Retail placement guidance optimises for even coverage and the entrance impression. A clinic optimises for containment first, evenness second, appearance third — and where they conflict, containment wins. Three rules, in the order to apply them.
1
RULE ONE · DISTANCE AND DIRECTION FROM THE BOUNDARY
Three metres from the corridor mouth, and facing away from it
The corridor to consultation is the boundary between the two halves of your building, and it behaves like a flue: air near its opening is drawn along it, helped by every door that opens off it and by the pressure differences a working clinic generates all day. A source three metres back and angled into the room loses most of its output to the reception's own volume before any reaches that opening; the same source a metre from the mouth is scenting the corridor. If your reception is shallow enough that three metres is impossible, that is a finding rather than a detail to work around — the arrival zone and the clinical route are the same space, and the honest answer is to scent nothing. Where you have the depth, take the extra metre rather than the better sightline.
The test: stand at the corridor mouth for two minutes at four in the afternoon. If you can identify the fragrance there, move the source.
2
RULE TWO · AIR-CONDITIONING, IN BOTH DIRECTIONS
Not in the supply throw, not beside the return, and never in the duct
Sukoon₹1,899 · behind the desk lineAir-conditioning creates two hazards and they are opposites. A supply vent throws air across the room at speed, so a source in that throw is not diffusing into a room but injecting into a jet — and wherever the jet lands is where your fragrance lives, often the far corner or straight down the corridor. A return grille does the reverse, drawing air into the system, so a source beside one is feeding the ducting that serves the whole floor. That is an HVAC installation performed by accident, and it produces the exact outcome this cluster exists to prevent. Deliberate duct-mounting is worse again, and I would never specify it in a clinic whatever the machine supports. Find both the supply and the return before choosing a position — and note that a reed diffuser in a draught also empties in a fraction of its stated life.
The two-minute survey: hold a tissue at head height around the room. Where it moves, do not stand the machine.
3
RULE THREE · SIGHTLINE, HEIGHT AND REACH
Behind the desk line, waist-to-chest, not facing the chairs
Once containment and airflow are settled, three smaller constraints decide the final position. Sightline: a machine on the counter with a visible plume reads as theatre before anybody has breathed, so put it behind the desk line and out of the line from entrance to chairs. Direction: never aim a source at a seating bank — you get two strong seats and a weak room, and those two seats are occupied for forty minutes at a time. Height and reach: waist-to-chest on something solid distributes better than floor level and far better than a high shelf, where warm air pins the output to the ceiling; and it must be beyond a child's reach. Two clinic-specific additions: an ultrasonic adds humidity, so keep it from paper records, spectacle stock and equipment, and a reed diffuser stands on a tray, because the oil marks stone and wood.
Part two — nine positions in a reception, judged
Every position a practice has proposed to me, with a verdict. Only three of the nine are worth having.
The placement table · positions in an arrival zone
Nine candidate positions, and what each does to the building
| Position | Verdict | What it does | If you have no alternative |
|---|---|---|---|
| Behind the desk line, mid-zone, away from vents ★ | Best | Even distribution, contained, invisible, out of reach | Nothing to work around — design for this one |
| A console or side table between entrance and seating | Good | Similar distribution, slightly more visible | Turn it away from the chairs; run the tissue test |
| Corner of the room, away from door and corridor | Acceptable | Contained, but slower and less even | Fine on a machine; poor for a reed, which has no push |
| On the reception counter, facing the seating | No | Visible plume, two over-scented chairs, at reach height | Eighteen inches back and down — the cheapest fix here |
| Within a metre or two of the corridor to consultation | No | Feeds the corridor, and the corridor feeds the cabins | No version of this works. Move it or switch it off |
| Directly under or in front of an AC supply vent | No | The vent decides where it goes — far wall, or the corridor | Move out of the throw; on reeds it also empties a bottle early |
| Beside an AC return grille | No | An accidental HVAC mount, feeding every room on the system | None. Find the return and keep several metres clear |
| High on a shelf above the seating | No | Warm air holds it near the ceiling; the room reads empty | Bring it down to waist-to-chest height |
| Duct-mounted into the central air-conditioning | Never, in a clinic | Distributes fragrance to every room on the system, clinical ones included | Decline it however it is proposed. Freestanding instead |
| The honest caveat: this table is guidance on where to stand a fragrance product in a waiting room. It is not advice on ventilation design, air handling, infection control or any clinical or regulatory matter, and nothing here is medical or safety advice. No claim is made that fragrance affects comfort, anxiety, perceived waiting time, recovery, footfall, reviews or revenue. Whether fragrance belongs in your building at all is a judgement for you and your clinicians. | |||
Shop this guide
Three formats, three placements
Vaayu · freestanding, never ducted₹11,999Shop → Sukoon · behind the desk line₹1,899Shop → Mountain Breeze · on a tray, no draught₹849Shop →
The SOSA principle
You are never choosing where the fragrance is. You are choosing where the building's air takes it next — which is why position matters more than the machine, and why the right spot is usually three free metres from the one that looked best.
And why the one thing I will not specify in a clinic, at any budget, is a duct mount.
Part three — when a clinic should not do this at all
The first case is a reception in which no compliant position exists. If every candidate is within two metres of the corridor mouth, in an air-conditioning draught, or on a counter in full view, the room is telling you something: it is not an arrival zone with a clinical route off it, but a clinical route with a desk in it. No machine and no setting rescues that geometry, and the correct outcome is to leave the air alone until a refit gives you the depth.
The second is a proposal that arrives from a contractor rather than from you. Duct-mounting a diffuser into the central air-conditioning is a normal specification in hotels and offices, so an architect, an AC vendor or a scenting installer may well suggest it — and in a clinical building it should be declined every time. It is not a question of the machine's quality; the ducting goes to the consulting rooms, the diagnostic areas and the procedure suite, and no damper arrangement is worth trusting with a boundary that ought to be absolute. The third is a children's eye clinic or a large paediatric caseload, which I would decline outright; the fourth is a practice whose front-desk team would rather work without it — they sit closest to whatever position you choose, and their answer settles it.
The fifth is supply, and it becomes real once a machine has been sited, cabled and made part of the room. SOSA does not currently sell a separate cold-air refill oil for the Vaayu. The 400ml in the box lasts roughly ninety days or more at a mid setting and is the whole supply available at the time of writing. For a home that is an inconvenience; for a practice that has designed a reception around a permanent installation, or is repeating it across branches, it is a business problem. The water-based Hotel Collection is not a substitute — it is for ultrasonic machines and must not be used in a Vaayu. Confirm availability through the contact page before committing.
In a hotel, ducting the scent into the air-handling is the professional solution. In a clinic it is the one thing that undoes the entire argument, and it should be declined however it is proposed.
— Sonal Sahani, SOSA
Part four — placement when the room fights you
Most receptions have one awkward feature that rules out the obvious position. Find yours in the first column.
Working around your room
Six obstacles, and where the source goes
| The obstacle | The rule it breaks | Where the source goes instead | Product |
|---|---|---|---|
| Only free surface is the reception counter ★ | Sightline, reach and direction | A low shelf behind the desk, or a console on the side wall | Sukoon ₹1,899 |
| Wall AC blows across the room | The supply-throw rule | The same wall as the unit, below and to one side | Sukoon ₹1,899 or a reed diffuser |
| Return grille sits above the desk | The accidental HVAC mount | The far side of the zone, several metres clear | Mountain Breeze ₹849–₹1,349 |
| Long narrow reception, corridor at one end | Distance from the boundary | The entrance third, facing inward — never the corridor end | Sukoon ₹1,899 |
| Open waiting hall, no anchor, 320+ sq ft | Distribution over a large volume | Freestanding at the gathering point, key-lock on, back from any corridor | Vaayu ₹11,999 |
| Every candidate position breaks a rule | All of them | Nowhere. Leave the air alone until the layout changes | ₹0 |
Honest notes for buyers: nothing here is medical, clinical, safety or regulatory advice; it does not address ventilation design, air handling, accreditation or infection control, and no SOSA product is described as safe or unsuitable for any patient group — those judgements belong to the practice and its clinicians. A diffuser adds a scent to the air; it does not clean, purify, filter, sanitise or disinfect air, and does not remove or neutralise disinfectant, damp or occupancy smells. No claim is made about comfort, anxiety, perceived waiting time, recovery, reviews, footfall or revenue. Some people are sensitive to airborne fragrance, which is why the clinical pathway stays fragrance-free and a fragrance-free seat should always exist. Coverage figures are manufacturer specifications and vary with ceiling height, air exchange and occupancy. Megh at ₹3,499 covers about 215 sq ft — less than a Sukoon — a runtime machine, never a coverage upgrade. Safar at ₹3,999 has no published coverage figure. Boond at ₹899 covers about 150 sq ft. SOSA sells no room spray; every SOSA spray is a car perfume. SOSA publishes no bulk pricing, corporate account, maintenance contract, installation service or stated warranty term — ask through the contact page before committing. Free shipping above ₹499.
A reed diffuser has placement rules of its own
SOSA Mountain Breeze · Himalayan pine, sage & Indian cedar ₹849 / 50ml
A passive source has no push, so position does more of the work than it does for a machine: too enclosed and nothing distributes, too exposed and the reeds are stripped. In a clinic that means a solid surface at waist-to-chest height in the body of the room, on a tray because the oil marks stone and wood, out of the entrance draught and out of patient reach — never in the corridor or on a windowsill in direct sun. Six fibre reeds rather than rattan, whose pores clog in Indian humidity; alcohol-free, phthalate-free and low-VOC on a heat-stable carrier. 50ml runs 6–8 weeks, 130ml ₹1,349 runs 14–18 weeks. In a draught, a fraction of that — a bottle finishing early is a placement report.
SS
ISIPCA
Versailles
Versailles
A note from Sonal
A surgeon called me about consultation cabins that smelled faintly of his reception by mid-afternoon. He had set the machine correctly and chosen a dry composition. The unit stood about a metre from the mouth of the corridor, because that was where the only spare socket was. Nothing else was wrong with the installation, and nothing else needed to be.
We moved it four metres, to a console on the far side of the seating, with an extension run tidily under the skirting. The cabins were clear within two days. It cost him nothing, and it is the commonest fault I see — placement decided by a socket rather than by the floor plan, which is the argument for settling this at layout stage with whoever draws the room.
The half I say less profitably is that some receptions have no compliant position at all, and a few practices have been offered an HVAC integration by a contractor who was being helpful rather than careless. Both of those end in the same recommendation: buy nothing, or buy the machine and put it where the room allows, never in the duct. Made in Pune in small batches, and a part of every order funds a girl's classroom through Nanhi Kali.
Frequently asked questions
Can I mount a Vaayu into our central air-conditioning to get even coverage?
Not in a clinic. The Vaayu supports a wall or HVAC mount, and it is an ordinary specification in a hotel or an office. In a building where consulting rooms, diagnostics and a procedure suite share that ducting, it distributes fragrance precisely where it must not go. Freestanding in reception, set back from the corridor, is the correct installation — and if an installer proposes the duct, decline it.
How far from the corridor to consultation is far enough?
Three metres is my working minimum, more where the plan allows, with the source facing into the room rather than the opening. Then test it: stand at the corridor mouth for two minutes late in the afternoon, when accumulation is highest, and if you can identify the fragrance there the position is wrong. Ask someone who has been outside to do the same, since your own nose has adapted.
How do I find the return grille?
It is the vent that draws rather than blows — hold a light tissue near each grille and watch which way it moves. Supply vents push it away, returns pull it in. Keep the source several metres from any return: a diffuser beside one feeds the air-handling system serving the rest of the floor, which is the outcome the zoning argument exists to avoid. The same survey tells you where the supply throw lands.
Should the machine be higher up so it distributes better?
No. Waist-to-chest on a solid surface distributes better than either extreme: at floor level the output pools, and high on a shelf it stays near the ceiling where warm air holds it, so the room reads empty while the shelf reads strong. Height has a practical dimension in a clinic too — the source must be beyond a child's reach, and an ultrasonic should be clear of paper records, spectacle displays and equipment because it adds humidity.
Our only socket is in the wrong place. Does it matter that much?
Yes, and it is the commonest reason a well-chosen installation goes wrong. A metre near a corridor mouth or an air-conditioning vent changes where the fragrance ends up more than any adjustment to the dial. Run an extension tidily, move a console, or use a reed diffuser — which needs no power and can go exactly where the floor plan says. Better still, decide the position while the room is being drawn.
Eye clinics · reception and waiting only
Freestanding, mid-zone, three metres from the corridor — never in the ducting
Behind the desk line rather than on the counter, out of the AC supply throw and clear of the return grille, waist-to-chest on something solid, out of reach, not facing the chairs. For a 150–320 sq ft arrival zone the sized product is the Sukoon at ₹1,899 on its lowest setting; past roughly 320 sq ft, a freestanding Vaayu at ₹11,999 — under 38 dB, key-lock, scheduled run windows, never mounted into shared HVAC in a clinic, and confirm refill supply before committing. A diffuser adds a scent to the air; it does not clean or purify air, remove any existing smell, or have any clinical effect.
Vaayu ₹11,999 → Sukoon ₹1,899
Continue the read
More on the arrival zone
- One zone, one scent, one level — why a gradient inside one space cannot be held.
- Which composition suits a waiting room — chosen for the fortieth minute.
- How strong the level should be and what a busy reception changes.
- Should patients notice it at all — the intensity doctrine.
- Brand: the SOSA founder story.
Editorial standards & sources
About this guide: Written by Sonal Sahani, ISIPCA Versailles-trained founder and perfumer at SOSA Home & Body, on ambience in the arrival zone of an ophthalmology practice. Nothing in it is medical, clinical, ventilation or regulatory advice; no clinical outcome, patient response, safety property or business result is claimed. The placement guidance describes where a fragrance product should stand in a waiting room, not how any system should be designed. No hotel group is a SOSA partner or reference.SOSA range, specifications and prices used in this guide (verified August 2026): Vaayu ₹11,999 — waterless cold-air nebulisation of undiluted fragrance oil; no water, no heat, no added humidity, no white mineral dust. Coverage up to 1000 m³, about 2,000–3,000 sq ft. 400ml refillable tank lasting roughly 90+ days at a mid setting. Bluetooth app plus onboard controls, 1h / 4h / 8h / 24h run windows, day selection, adjustable intensity, auto-stop and key-lock. Under 38 dB. DC 12V / 1A, 5W. Freestanding or wall / HVAC mount. CE, RoHS and SGS certified. SOSA does not currently sell a separate Vaayu cold-air refill oil; the 400ml supplied in the box is the fragrance available at the time of writing, so a practice planning continuous or multi-site use should confirm current refill availability with SOSA before committing. The water-based Hotel Collection is made for ultrasonic machines and must not be used in a Vaayu. Other machines: Boond 300ml ₹899 (~150 sq ft, ultrasonic) · Sukoon 500ml ₹1,899 (270–320 sq ft, 16–18 hours on low, remote and steady/2H/4H timers, three 15ml fragrances included, ultrasonic) · Megh 6L ₹3,499 (~215 sq ft — a runtime and humidity machine that covers less than a Sukoon, never a coverage upgrade) · Safar ₹3,999 (waterless cold diffusion, cordless, 20ml, about 6.9cm, three speeds, 1/2/3-hour auto-off — sold as a car and travel diffuser, personal-scale only; SOSA publishes no coverage figure for it) · Aangan ₹25,999 (HVAC nebulising, ~8,000–10,000 sq ft) · Meenar ₹38,500 (commercial HVAC, 12,000–18,000 sq ft). Water-based Hotel Collection for ultrasonic machines: 15ml ₹299 · 100ml ₹999 · 300ml ₹1,799 · pack of seven ₹1,799; scents are inspired by the atmosphere of well-known hotels — SOSA is an independent Indian brand and is not affiliated with, endorsed by or supplying any hotel group. Reed diffusers ₹749–₹1,349 (50ml 6–8 weeks, 130ml 14–18 weeks, six fibre reeds, no 100ml size; replacement reeds are not sold separately). Reed oil cannot be used in an ultrasonic machine and Hotel Collection oil cannot be used in reeds. SOSA sells no room spray or home spray — every SOSA spray is a car perfume. Nothing in this guide is medical, clinical or safety advice. A fragrance diffuser adds a scent to the air. It does not clean, purify, filter, sanitise or disinfect air, does not remove or neutralise disinfectant, damp or occupancy smells, and has no effect on comfort, anxiety, waiting time, recovery or any clinical outcome. Some people are sensitive to airborne fragrance, which is why this guide recommends that examination rooms, diagnostic areas, consultation cabins, procedure suites and post-operative areas remain fragrance-free, that a fragrance-free seating option always exist, and that a diffuser is never mounted into shared HVAC in a clinical building. Decisions about clinical policy, ventilation standards, infection control and patient suitability rest entirely with the practice and its clinicians. A persistent stale, damp or disinfectant smell is a ventilation, moisture or cleaning problem — SOSA sells no dehumidifier and no air purifier, and fragrance should never be used to cover one. Coverage, runtime and longevity figures are manufacturer specifications and typical ranges, not guarantees, and vary with room volume, ceiling height, air exchange, occupancy and season. SOSA publishes no commercial or bulk pricing, no corporate account, no annual maintenance contract, no installation service, no stated warranty term and no multi-location programme; warranty length, spare parts, servicing and app platform availability are unconfirmed, and larger or multi-site enquiries should go through the contact page before any commitment. Composed and made in small batches in Pune, India. 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.