SOSA VaayuOne unit, correctly sized and mountedView ₹11,999
SOSA AngaanThe single-unit answer above 3,000 sq ftView ₹25,999
SOSA SukoonThe wrong fix for a large clinic's cornersView ₹1,899
What actually fixes a cold corner? Usually repositioning the one machine you have - often to a wall or HVAC mount mid-corridor - rather than adding another. A correctly mounted Vaayu reaches further and more evenly than two poorly placed ones.
When is a second machine actually correct? Only when it serves a genuinely separate volume of air - its own HVAC zone, its own set of doors normally kept closed - never a second corner of the same connected room.
Two gradients in one shared space don't add up cleanly. Where they overlap - typically somewhere between the two machines - the combined concentration is higher than either machine alone would produce, creating a hot spot: a zone where the fragrance is more noticeable than intended, sometimes enough for a client to name it, which this cluster treats as the definition of too strong. Meanwhile, the areas beyond the reach of both machines - genuinely distant corners, or pockets behind furniture and partial walls - can remain exactly as under-scented as they were with one machine, because neither gradient extends far enough to reach them. Add a third machine and the pattern repeats: more hot spots, more competing gradients, and no guarantee the true dead corner is finally covered, because the problem was never the number of sources - it was the position of the one you had.
The honest fix, in almost every case, is to treat the space as one connected volume and give it one correctly sized, correctly mounted source rather than a scattered set of smaller ones. That usually means moving the single machine you already have to a more central position - wall or HVAC mounted, roughly a metre up, clear of both the AC draught and the door draught - rather than leaving it wherever the fit-out crew happened to put it and compensating with more units. It sometimes means recognising that the floor plan genuinely exceeds a single Vaayu's honest range, in which case the answer is one Angaan at ₹25,999, not two or three Vaayus stacked into the same space.
The one case where a second machine is genuinely correct is when it serves a second, real volume of air - a separate wing behind its own doors, a different HVAC zone, a part of the building that does not share airflow with the first. That is not a coverage fix for one room; it is two rooms, each with its own honest specification. The test is simple and repeats through this cluster: can you see from one space to the other with the doors as they normally sit? If yes, they are one volume and need one machine. If no, they are two volumes and each gets its own - never a third one added to the first volume because a corner still feels weak. Ask for a clinic scenting plan and tell us which corner feels weak; more often than not, the fix is where the machine sits, not how many you own.
What a large clinic actually buys
One correctly sized machine, or a genuine second volume of air with its own unit - never a scattered set of small fixes.
The physics of why several machines fail
Three mechanics explain why unit count is the wrong lever to pull on a large connected floor.
The scent map for a large connected floor
One source, positioned to serve the whole connected volume rather than one end of it.
| Symptom | Likely cause | The fix |
|---|---|---|
| One corner is consistently weak | The machine is mounted at one end of the connected volume | Reposition centrally, wall or HVAC mounted, before adding a unit. |
| A specific mid-room spot smells stronger than anywhere else | Two active sources overlapping | Remove or reposition one - a hot spot is a placement error, not a coverage gain. |
| The whole floor is inconsistent, not just one corner | The connected-volume test hasn't been applied | Check whether the space is genuinely one volume or several with doors between them. |
| A separate wing behind closed doors is unscented | It is a genuinely separate volume of air | Give it its own correctly sized unit - this is the one case a second machine is right. |
The reed-scale version of this same reach problem - why a bottle that works at reception fades before the far end of the clinic - is worked through in why can my reed diffuser be smelled at reception but not across the clinic, and the mounting decision for a single Vaayu is covered in how should a 2,000+ sq ft centre approach scenting. SOSA makes no claim that scenting affects bookings, retention or spend.
The SOSA osteopathy specification
One unit per connected volume of air - the size decides which unit, never how many.
| Product | Serves a connected volume of about | Never stacked because | Price |
|---|---|---|---|
Morning Freshness
|
Under 300 sq ft, or reception at any size | A dry citrus register at a fixed low level | ₹749 · ₹1,249 View → |
Mountain Breeze
|
Under 300 sq ft, wood-and-stone interiors | Pine, sage and cedar in the same one-bottle plan | ₹849 · ₹1,349 View → |
SOSA Sukoon
|
300-750 sq ft, only if control matters | An off switch and a scheduled runtime, not more reach | ₹1,899 View → |
SOSA Vaayu
|
1,500-3,000 sq ft of connected air | The size where a machine's coverage claim is genuinely true | ₹11,999 View → |
SOSA Angaan
|
Above 3,000 sq ft of connected air | One larger machine instead of stacking several Vaayus | ₹25,999 View → |
Versailles
A large single-floor clinic once called us convinced they needed a third Vaayu. They had one near reception, added a second near a stubborn cold corner six months later, and the corner was still cold - worse, a client had started commenting on a strong patch near the corridor bend, roughly between the two machines.
We asked them to send both machines' locations on a plan rather than order a third. The strong patch was exactly where the two gradients overlapped, and the cold corner sat beyond the reach of both. We recommended removing the second unit entirely and moving the first to a central, wall-mounted position instead. Three weeks later the corner was no longer cold, the strong patch was gone, and they had one machine doing the work two had failed to do.
Fragrance is an ambience decision, like lighting or seating. It sits alongside your cleaning, laundry and ventilation and never replaces them. Whether a treatment room is scented at all is yours to decide, and if a client asks you to turn it off, turn it off. Made in India, and a portion of every order supports girl-child education through Nanhi Kali.
Frequently asked questions
SOSA Vaayu - one unit, correctly mounted (₹11,999)
SOSA Angaan - for a genuinely larger floor (₹25,999)
- Scenting a 2,000+ sq ft centre
- Why can't my reed be smelled across the clinic?
- How does AC airflow affect fragrance distribution?
- Ask us: Ask for a clinic scenting plan
- Brand: Founder story — why SOSA exists
Facts verified 5 September 2026 against the live SOSA product pages: the SOSA reed diffusers are alcohol-free, phthalate-free and paraben-free compositions on a heat-stable coconut-derived base, supplied in a refillable glass bottle with six fibre reeds, flipped weekly, with 50ml lasting 6-8 weeks and 130ml lasting 14-18 weeks, tested at 45°C and 85% relative humidity - Morning Freshness ₹749 / ₹1,249, Mountain Breeze ₹849 / ₹1,349. The SOSA Sukoon (₹1,899) is an ultrasonic cool-mist diffuser covering about 270-320 sq ft for 16-18 hours on the low setting and supplied with three 15ml Hotel Collection fragrances; being ultrasonic, it works by aerosolising water and therefore adds some moisture to the air. The SOSA Vaayu (₹11,999) is a waterless cold-air nebuliser rated to 1000m³, described by the manufacturer as approximately 2,000-3,000 sq ft, with a 400ml refillable tank lasting up to about 75 days depending on intensity and run hours, Bluetooth app and onboard button control, 1h/4h/8h/24h timers, adjustable intensity, operation under 38dB, DC 12V/1A at 5W (roughly 1.5 units of electricity a month on a ten-hour daily schedule), freestanding or wall and HVAC mounting, auto-stop and key-lock, and CE, RoHS and SGS certification - which are electrical and compliance marks, not medical approval. Being waterless, it adds no moisture and leaves no residue on surfaces or equipment; refill availability should be confirmed with SOSA. The SOSA Angaan (₹25,999) is an HVAC nebulising diffuser rated to 3,000m³, roughly 8,000-10,000 sq ft, with an 800ml reservoir and operation under 42dB. SOSA products are not medical devices and no health, therapeutic or wellbeing claim is made or implied anywhere in this guide; ambient scent is an interior and hospitality decision that works alongside cleaning, laundry, ventilation and hygiene protocol and is never a substitute for any of them. Infection control, linen protocol and HVAC standards are matters for the practitioner and the facilities engineer. Fragrance sensitivity is real: staff should be able to switch any system off in seconds, and no SOSA product is described as hypoallergenic or as safe for sensitive individuals. SOSA is an independent brand and is not affiliated with, or endorsed by, any hotel named for reference. Coverage, fragrance usage and running cost depend on the space, settings and hours of use, and are confirmed on a consultation. Prices and availability are subject to change - see the live product pages.

