What is not a drawing item: anything to do with control. Vaayu schedules itself over Bluetooth — 1h / 4h / 8h / 24h windows, day selection, adjustable intensity, auto-stop, key-lock. SOSA publishes no Wi-Fi, Alexa, Google Assistant, Matter, Zigbee, Z-Wave, KNX, Crestron, Control4, RS-232, dry contact or API, so there is nothing to pre-wire, no bus to extend, no head-end space to reserve and no control drawing to amend.
The cheapest correct move: reserve rather than specify. A 5W low-voltage point and a clear, serviceable position cost almost nothing at drawing stage and keep every option open even if the client never buys a machine.
What retrofit actually takes away: the return mount, and with it the evenness that is most of what the machine is for. After handover you are freestanding or wall-mounted, in whichever position a socket already exists.
2. Nothing about control needs planning, because there is nothing to plan. Vaayu automates itself through its own Bluetooth app and onboard buttons, with 1h / 4h / 8h / 24h run windows, day selection, adjustable mist intensity, auto-stop and a key-lock. SOSA publishes no Wi-Fi, Alexa, Google Assistant, Matter, Zigbee, Z-Wave, KNX, Crestron, Control4, RS-232, dry contact or API. There is no bus to extend, no cable to pull to a panel, no rack space to allow and no integration line item. It runs alongside the automation on the same timetable, not inside it, and an integrator should know that before drawing a scene rather than after.
3. The item that is genuinely lost by waiting is the return mount. Mounting into an HVAC return is the difference between an even atmosphere across a floor and a strong pocket of fragrance near a shelf. It is a first-fix coordination with the mechanical package, and after the ceilings are closed it is realistically gone. What the client paid for in a machine at this level is transport, control and evenness rather than a better smell — and evenness is exactly the part a retrofit surrenders.
4. The zone boundaries are an architectural decision that nobody else will make. A closed door is a boundary; an open plan is one volume. Coverage is stated as up to 1000 m³ per unit, roughly 2,000 to 3,000 sq ft at ordinary ceiling heights — and a double-height room, a void or an open stair consumes volume the floor plan hides. Establish the connected volumes at concept, before anybody has quoted a number of machines. I will not publish that number as a formula, because the inputs are volume, height, doors, HVAC layout and occupied hours, and the specifier holding those will reach a better answer than a rule of thumb.
5. If the client is undecided, reserve rather than specify. A 5W low-voltage point and a position that has airflow across it and access to it costs almost nothing to leave on a drawing, and it preserves the option for years. That is the correct early action on most projects — not a purchase.
Vaayu is ₹11,999 per zone, covers up to 1000 m³ of connected volume, runs under 38 dB, draws 5W at DC 12V / 1A, holds a 400ml sealed residue-free tank lasting up to about 90+ days, and is CE, RoHS and SGS certified. Free shipping above ₹499, and a portion of every order supports girl-child education through Nanhi Kali.
The layer with no consultant, and why it goes missing
On a serious residential project every sensory layer has somebody whose job it is to worry about it. Light has a lighting designer, sound has an audio-visual consultant, temperature and air have a mechanical engineer, texture and colour have the interior designer. Scent has nobody, and that is the whole reason this page needs to exist. An item without an owner does not get argued about at a coordination meeting; it simply does not appear, and it reappears eleven months later as a client request during snagging, at which point the only available answer is an appliance on a console with a cable running down the wall.
Vaayu₹11,999The load is trivial — DC 12V / 1A, 5W, a rounding error against a single lighting circuit — and it still has to appear as a point on the electrical layout at the position and height where the unit will actually sit. That is the entire electrical coordination, and it is the one most often skipped because the number is so small it does not feel like a services item. Skip it and the machine migrates to wherever a socket exists, which is usually a skirting-level point behind furniture or a console beside the front door. Neither is a good position: a unit at floor level is throwing mist into the least mobile air in the room, and the doorway itself is the most turbulent point in a house, where whatever you release is pulled straight out. Slightly inside the space, at height, in the airflow path, is the answer — and it needs a point there.
Aangan₹25,999This is the item worth calling a coordination meeting for, and I want to be precise about what it is: a mechanical integration, not a digital one. The machine can be mounted into an HVAC return so that the building’s own moving air distributes the mist, which is why a well-executed installation has no findable source — there is no object on a table to walk towards and no gradient to climb. That is the effect people associate with a good hotel, and it is achieved with ductwork rather than with a protocol. Two things must be settled with the mechanical consultant early: the position relative to the return, and maintenance access, because a 400ml tank runs up to about 90 or more days and somebody visits roughly four times a year. A position requiring a ladder and a dismantled ceiling will be visited less often than that, and an under-serviced machine is an unscented building.
Ask before specifyingContactWhere the unit is not inside a return it is a visible object in black or white, and it belongs on the same schedule as switch plates, sensors, keypads and grilles — agreed with the interior designer rather than discovered by them. Two honest limits go with that. It needs clear air across its outlet, so a sealed millwork void will strangle it however tidy it looks on a section; and it needs physical access to its buttons and its tank, so concealment that cannot be opened in ten seconds will not survive the first refill. The acoustic figure helps here: under 38 dB, quiet enough for a bedroom, a clinic or an office, which means the position can be decided on airflow and sightlines rather than on noise.
What retrofitting actually costs, item by item
It is worth being specific rather than alarmist, because the honest answer is that a retrofitted installation still works. This is not a buried system; it is an appliance that can be carried into a finished house and switched on in an afternoon. So the argument for planning is not that retrofit is impossible. It is that retrofit spends the client’s money on the same machine and buys them less of what the machine is for. A ₹1,000 reed diffuser and a ₹11,999 nebuliser can carry closely related scents and produce completely different rooms, because what the higher price buys is transport, control and evenness rather than a better smell. Every item a retrofit surrenders is an item on that list.
The first loss is the return, and it is the largest. Without it the unit is freestanding or wall-mounted, which is perfectly serviceable in a single room and noticeably less even across a floor of connected spaces. The second is the position, which after handover collapses to wherever power already exists — and the fallback when it does not is a surface cable, which on a project of this standard is not a small thing to have to propose to a client. The third is the boundaries: after handover the doors, the joinery and the ceiling heights are all fixed, so the zones are no longer a choice, they are an inheritance, and if the plan produces an awkward one — a single connected volume too large for one unit, or a small closed room that now needs its own machine to be included at all — there is nothing to be done about it. The fourth is service access, which in a retrofit is usually chosen for concealment and then quietly never used.
One further thing belongs in the retrofit conversation, and it is not about hardware at all. If the property is newly finished, it will be off-gassing — new cabling, adhesives, MDF, joinery and packaging all release most strongly when new — and fragrance does not remove a smell. Adding a pleasant odour to an unpleasant one produces a mixture, and the mixture is usually worse than either. The correct sequence is always source, then ventilation, then fragrance: get the packaging out of the building, air it properly, check the fresh-air intake, and scent it afterwards. A scent machine adds fragrance; it does not clean, purify or deodorise air, and I would rather write that on a project file than let somebody discover it during a handover walk.
At drawing stage versus after handover
The same five decisions, seen from both ends of a project. The right-hand column is the sentence an integrator or an architect ends up having to say to a client, which is generally the most persuasive argument for reaching a decision eleven months earlier.
| Decision | At services coordination | After handover | What it costs |
|---|---|---|---|
| Supply | A 5W low-voltage point at the real position and height | Whatever socket already exists | A surface cable, or the unit moves to the wrong place |
| Mounting | Freestanding, wall or HVAC-return, chosen deliberately | Freestanding or wall only | Evenness across a floor — the thing the machine is bought for |
| Zone boundaries | Drawn as connected volumes, doors in their normal position, heights annotated | Inherited from doors and joinery already built | Either an unserved volume or an over-specified small room |
| Service access | Refill access designed in, roughly quarterly | Chosen for concealment, then not used | An empty tank nobody notices until the client does |
| Finish and sightlines | Black or white, scheduled with plates, grilles and keypads | An appliance placed on a finished console | A visible object nobody designed |
| Control integration | Nothing to do — there is no bus, no protocol, no head-end and nothing to pre-wire | Nothing to do, for the same reason | Nothing — provided the client was told at the start |
Vaayu · per zone₹11,999See specification → 
Aangan · larger volumes₹25,999See it → Project questionsContactAsk us →
Reserve rather than specify — the honest recommendation on most projects
I would rather an architect left a possibility open than committed a client to a purchase at concept stage, and this product is unusually well suited to that approach. The reservation is a 5W low-voltage point and a position with clear air across it and hands able to reach it. That is all. There is no conduit to run, no bus to extend, no rack unit to allow, no head-end, no licence and no commissioning slot to book with a third party. If the client buys a machine in year three, everything they need is already there. If they never do, the drawing carries a small unused point, which is the cheapest option any of us has ever left open on a project.
This matters commercially as well as technically, and I would rather say so plainly than let a specifier guess. SOSA publishes no dealer programme, no reseller margin, no trade price, no distributor agreement, no territory, no minimum order, no lead time, no installation charge and no maintenance contract — none of those exist to be built into a project budget, and nobody should be assuming one when pricing a package. What does exist is a published product with a published specification, which is what an architect actually needs at this stage. If a project raises a question that this page has not answered — a plan you would like a second opinion on, a volume that sits awkwardly against one unit’s reach, a commercial arrangement you want to ask about — the honest route is the SOSA contact page, as an invitation to ask rather than a promise of terms.
One last coordination note that saves a difficult conversation later. Where a single connected volume is genuinely larger than one unit can serve well, the honest answers above Vaayu are Aangan at ₹25,999, covering approximately 8,000 to 10,000 sq ft, and Meenar at ₹38,500 for 12,000 to 18,000 — and both are HVAC-oriented machines, which pushes the mechanical coordination even earlier in the programme. And whichever machine the project ends up with, write the oil requirement into the specification: alcohol-free, water-free oils formulated for cold-air diffusion, such as the SOSA Hotel Collection. Thick undiluted essential oils are not recommended, because they clog the fine nozzle over time, and a well-meaning client or contractor with a bottle of neat essential oil is a genuinely common way for a good installation to degrade in its second year.
The drawing-stage checklist — and the honest gap
Six items to carry into services coordination, written so they can be transcribed into a drawing note or a specification clause without translation. The final row is what this product does not give you, stated so that nobody has to find out at commissioning.
| Item | The drawing note | Who owns it | Reference |
|---|---|---|---|
| 1. Zones | Scenting zones shown as connected volumes with doors in their normal position and ceiling heights annotated | The architect, at concept, before any machine count | Up to 1000 m³ per unit |
| 2. Supply | Low-voltage point, DC 12V / 1A, 5W, at the stated position and height | The electrical consultant, prompted by you | 5W per unit |
| 3. Mounting | Freestanding, wall-mounted or into an HVAC return, stated per zone | The mechanical consultant, at first fix | Return mount = evenness |
| 4. Service access | Maintenance access for quarterly refilling, reachable without dismantling | Joinery and mechanical together | 400ml, up to about 90+ days |
| 5. Finish | Black or white, coordinated on the interior elevations with plates and grilles | The interior designer | Under 38 dB |
| 6. Oil and settings record | Oil family specified; hours, days and intensity recorded at handover, key-lock holder named | Whoever commissions it | Cold-air oils, 300ml ₹1,799 |
| No bus, no head-end, no pre-wire: the honest gap | There is nothing to pre-wire for control, because there is no control integration. SOSA publishes no Wi-Fi, Alexa, Google Assistant, Matter, Zigbee, Z-Wave, KNX, Crestron, Control4, RS-232, dry contact or API, and no cross-unit dashboard exists | Tell the client in writing at concept, not at handover — the integrator carries that conversation, not us | Ask us first |
Versailles
I am aware that a perfumer telling architects to plan for a fragrance machine at services coordination sounds like a perfumer trying to get onto a drawing. So let me be plain about the size of the request. It is one low-voltage point and one agreed position. That is the whole of what I am asking for, and I am asking for it on projects where the client may never buy anything, because the reservation costs nothing and the retrofit costs a compromised position for the life of the building.
What I am not asking for is anything to do with control, and I want to say that as clearly on this page as on every other page in this series. There is no bus, no protocol, no head-end and nothing to pre-wire, because the machine schedules itself and joins nothing. If somebody has told you otherwise about this product, they were describing a product we do not sell. The integration that does exist is mechanical — the HVAC return — and it is genuinely the most interesting thing about the specification, because it is what turns a scented corner into a scented floor.
The thing I would most like an architect to take from this is the sequence for a newly finished building. A new house smells of itself for a while — adhesives, joinery, cabling, packaging — and fragrance will not cover that. It will mix with it, and the mixture is worse. Get the packaging out, air the building properly, check the fresh-air intake, and then scent it. Everything is composed in Pune, and a portion of every order funds a girl’s classroom through Nanhi Kali.
Frequently asked questions
- Can fragrance be automated like lighting, curtains and air conditioning? — scheduled, not integrated.
- What an automated scenting system actually is — reservoir, nebuliser, schedule, intensity, mounting.
- Can a smart home turn its fragrance on and off? — the machine owns the logic, not the house.
- Is a waterless machine suitable for a smart home? — no humidity, no residue near electronics.
- How it fits a luxury setup — placement in the project rather than in the protocol stack.
- Scheduling it to certain times — the 1h / 4h / 8h / 24h windows through a real week.
- Different intensities in different areas — a machine per zone, each set independently.
- Lighting, climate and scenting together — a shared timetable, not a shared bus.
- Is automated fragrance the next layer? — the honest case, and what would have to change.
- Brand: the SOSA founder story.
SOSA Vaayu — facts verified August 2026: ₹11,999. Waterless cold-air nebulising diffuser; pressurised air shatters undiluted oil into a dry nano-mist, with no water, no dilution, no added humidity and no residue. Coverage up to 1000 m³, approximately 2,000–3,000 sq ft at standard ceiling height, read as connected volume rather than floor area. Control: Bluetooth app plus onboard buttons, run windows of 1h / 4h / 8h / 24h, day selection, adjustable mist intensity, auto-stop and key-lock; the schedule is stored in the unit. SOSA publishes no Wi-Fi, Alexa, Google Assistant, Matter, Zigbee, Z-Wave, KNX, Crestron, Control4, RS-232, dry-contact or API integration of any kind; there is nothing to pre-wire, no bus to extend and no head-end to allow for, and Vaayu cannot be started, stopped, scheduled, triggered or monitored by any home-automation control system, voice assistant, hub or sensor. Mounting: freestanding, wall-mounted or into an HVAC return — a mechanical integration, not a digital one. Power DC 12V / 1A, 5W at the mounting position. Under 38 dB. 400ml sealed, residue-free, refillable tank lasting up to about 90+ days depending on intensity and scheduled hours; SOSA publishes no millilitres-per-hour consumption rate and none is estimated here. CE, RoHS and SGS certified. Black and white finishes. Oils must be alcohol-free, water-free fragrance oils formulated for cold-air diffusion, such as the SOSA Hotel Collection (100ml ₹999 · 300ml ₹1,799 · pack of seven ₹1,799); thick undiluted essential oils are not recommended as they clog the fine nozzle. Other SOSA machines: Sukoon ₹1,899 ultrasonic (500ml, 270–320 sq ft), Boond ₹899 (up to about 150 sq ft), Megh ₹3,499 (six-litre tank, about 100 hours runtime, only about 215 sq ft — a runtime and humidity machine, never a coverage upgrade), Aangan ₹25,999 (~8,000–10,000 sq ft), Meenar ₹38,500 (12,000–18,000 sq ft). SOSA reed diffusers are alcohol-free, phthalate-free, paraben-free, IFRA-compliant and 0 ppm formaldehyde, with six fibre reeds in a refillable glass bottle, composed in Pune. Fragrance does not remove or neutralise an existing odour; the correct sequence is source, then ventilation, then fragrance. A scent machine adds fragrance; it does not clean, purify or deodorise air, and SOSA makes no health or air-quality claim. SOSA publishes no dealer programme, reseller margin, trade price, distributor agreement, territory, minimum order, lead time, installation charge or maintenance contract; commercial enquiries are welcome at https://sosahomeandbody.com/pages/contact. Free shipping above ₹499. A portion of every order supports girl-child education through Nanhi Kali. SOSA is an independent Indian fragrance house; the Hotel Collection scents are SOSA’s own interpretations inspired by the world’s finest hotels, and SOSA is not affiliated with or endorsed by any hotel brand or any home-automation manufacturer. Prices subject to change — see the live product pages.