How Should a 3,000 Sq Ft Multi-Service Diagnostic Facility Approach Scenting?
★ ★ At this size the duct run decides the machine, not the square footageSOSA Vaayu ₹11,999 · covers up to 1000m³ on a single unitMade in India · free scenting plan on a consultation
★ SOSA for Diagnostic, Pathology and Imaging Centres
A rated volume tells you what a machine can fill, and the duct tells you whether it can get there
★ ★ ★ ★ ★
★★★★★
"Our old water diffuser couldn't fill the living-dining. This one does the whole floor and you can't hear it running."
Homeowner Hyderabad
SOSA Vaayu · large home
★★★★★
"The app scheduling is the best part - strong in the mornings, gentle in the evening. Clinic feels calm all day."
Clinic Pune
SOSA Vaayu · wellness studio
★★★★★
"Paired it with the SOSA hotel oils. The projection is genuinely lobby-strength - nothing like a plug-in."
Office Manager Delhi
SOSA Vaayu · workspace
★★★★★
"My reception now smells like a five-star lobby. Guests comment on it before they even reach the desk."
Boutique Hotel Jaipur
SOSA Vaayu · lobby scenting
★★★★★
"Zero dampness, which was my worry in monsoon. The mist is completely dry and the scent carries across the whole salon."
Salon Owner Mumbai
SOSA Vaayu · spa & salon
★★★★★
"Set the timer once and forgot about it. Runs only during store hours, refills last weeks. Exactly what I wanted."
Retail Brand Bengaluru
SOSA Vaayu · showroom
★★★★★
"Our old water diffuser couldn't fill the living-dining. This one does the whole floor and you can't hear it running."
Homeowner Hyderabad
SOSA Vaayu · large home
★★★★★
"The app scheduling is the best part - strong in the mornings, gentle in the evening. Clinic feels calm all day."
Clinic Pune
SOSA Vaayu · wellness studio
★★★★★
"Paired it with the SOSA hotel oils. The projection is genuinely lobby-strength - nothing like a plug-in."
Office Manager Delhi
SOSA Vaayu · workspace
★★★★★
"My reception now smells like a five-star lobby. Guests comment on it before they even reach the desk."
Boutique Hotel Jaipur
SOSA Vaayu · lobby scenting
★★★★★
"Zero dampness, which was my worry in monsoon. The mist is completely dry and the scent carries across the whole salon."
Salon Owner Mumbai
SOSA Vaayu · spa & salon
★★★★★
"Set the timer once and forgot about it. Runs only during store hours, refills last weeks. Exactly what I wanted."
✓ Rating tells you capacity; the duct tells you reach - they are different questions✓ Scan, control, collection and processing rooms stay unscented whatever the duct does✓ Made in India · independent, not affiliated with any hotel · a portion funds girl-child education
By Sonal Sahani · ISIPCA Versailles10 min readUpdated September 2026
Three thousand square feet is where the machine question finally becomes real, and where most owners ask it in the wrong units. The number that settles it is not on the lease and not on the product page - it is on the mechanical drawing.
Quick answers — read this first
How should a 3,000 sq ft multi-service diagnostic facility approach scenting? By reading the duct layout before choosing anything. On a representative plan the public part - entrance and reception at 380 sq ft, two waiting arms at 520 and 400, and a link concourse at 160 - comes to about 1,460 sq ft, with the other 1,540 in collection, processing, imaging, testing, changing and back-of-house rooms that come off entirely. Convert the public part and you get roughly 500 cubic metres: 380 at a 4.2m entrance height plus 1,080 at 3.5m.
Vaayu or Angaan at this size? On capacity, the SOSA Vaayu at ₹11,999 is rated to 1000m³ and this plan needs 500, so it is not short of capacity. The problem is shape. Two waiting arms off a link concourse is not one open room, and a single free-standing unit standing in one arm cannot serve the other. If your air handling has a duct you can connect to, that is solved. If it has not, the SOSA Angaan at ₹25,999 loses the advantage you would be paying for.
What if there is no accessible duct work? Then buy the smaller machine, put it at the elbow where the two arms meet, and accept that the far arm is the quiet end. An Angaan standalone on a wall bracket is a larger point source, and a larger point source in a split plan is still a point source. I would rather tell you that before the invoice than after it.
The short answer
Short answer: Read the mechanical drawing first. A 3,000 sq ft multi-service plan usually leaves about 1,460 sq ft of public area, roughly 500 cubic metres, which is inside a Vaayu's 1000m³ rating. What decides the machine is whether that public area is one open room or two arms off a concourse, and whether there is duct work you can connect to. Without an accessible duct, the Angaan's distribution advantage is unavailable and the Vaayu at the elbow is the honest answer.
The pick: one SOSA Vaayu at ₹11,999 for about 500 cubic metres of public air, stepping to the SOSA Angaan at ₹25,999 only where the public volume is far larger and the duct is genuinely accessible.
Next step: send the mechanical drawing alongside the floor plan and we will tell you which of the two the building can actually use - ask for a clinic scenting plan.
Vaayu or Angaan for a 3,000 sq ft multi-service facility?
Whichever one your duct work allows, and on most 3,000 sq ft plans that is the Vaayu. Take the arithmetic first. A multi-service facility at this size is room-heavy: collection cubicles, a processing and bench area, one or two imaging rooms with their control spaces, ECG and treadmill rooms, changing cubicles, reporting, records, staff and plant. On a representative drawing those come to about 1,540 sq ft. What survives is the public part - entrance and reception at about 380 sq ft, a waiting arm on each side of the building at about 520 and 400, and a link concourse of about 160 - roughly 1,460 sq ft. Now convert it properly, because this is the first size where ceiling height genuinely changes the answer: the entrance runs up to about 4.2m, so 380 × 4.2 × 0.0929 gives about 148 cubic metres, and the remaining 1,080 sq ft at 3.5m gives 1,080 × 3.5 × 0.0929, about 351. Call it 500 cubic metres of public air. Hold that against the ratings. A SOSA Vaayu at ₹11,999 is rated to 1000m³, so on capacity alone this plan is not close to needing anything larger. The SOSA Angaan at ₹25,999 is rated to 3,000m³, six times what this building holds. So if the question were capacity, it would already be answered. It is not. The real problem at 3,000 sq ft is shape. Two waiting arms off a link concourse is not one open room. A free-standing unit in one arm produces a gradient that fades along that arm, turns the corner weakly and arrives in the other arm as almost nothing, and no amount of extra output fixes that - turning it up simply makes the near arm too strong before the far arm is anything at all. There are two honest responses. If your air handling has duct work you can get at, mount the machine to it and let the supply do the distribution the geometry will not do; both machines can be mounted that way, and at 500 cubic metres the Vaayu is the correct one. If there is no accessible duct - a sealed ceiling, cassette units with no ducted supply, a landlord who will not open the void - then the Angaan's principal advantage is unavailable to you, because as a standalone wall unit it is a bigger point source with the same geometry problem. In that case put one Vaayu at the elbow where the arms meet, accept that each arm fades toward its far end, and spend the difference on nothing at all. Fragrance here is an ambience decision like lighting, seating or signage, it works alongside your ventilation and cleaning rather than instead of them, SOSA products are not medical devices, we make no claim that scenting affects how a centre performs commercially, and the clinician's judgement overrides any scenting plan, including mine.
About 1,460 sq ft of public area, roughly 500 cubic metres, which is inside a Vaayu already. Ducting, not capacity, decides the machine - and with no accessible duct the Angaan loses the advantage you would be paying for.
For about 500 cubic metres of public air the purchase is one SOSA Vaayu at ₹11,999, duct-mounted where possible and placed at the elbow between the two arms where it is not. There is no second unit on this specification, whichever way the duct question goes.
This is the first page in the size family where both of these are genuinely on the table. Read the mounting line on each specification before the coverage line, because the mounting is what your building either allows or does not.
₹11,999, waterless cold-air nebuliser rated to 1000m³ or about 2,000-3,000 sq ft. Freestanding or wall and HVAC mountable, 400ml tank at 90+ days, 1h/4h/8h/24h timers, adjustable intensity, key-lock, under 38dB, 5W.
₹25,999, HVAC nebulising diffuser rated to 3,000m³ or roughly 8,000-10,000 sq ft, 800ml reservoir, metal body, programmable schedules, under 42dB. HVAC-connected or standalone wall-mount - and the connected version is the version worth paying for.
₹11,999, 1000m³ coverage, roughly 2,000-3,000 sq ft. Waterless nebulisation of undiluted oil, no added humidity, 400ml tank lasting 90+ days, Bluetooth app plus onboard buttons, 1h/4h/8h/24h timers, adjustable intensity, auto-stop, key-lock, under 38dB, 165×80.5×215mm, 0.9kg. CE, RoHS and SGS are electrical and compliance marks rather than medical approval. Made in India.
Each of these is a question for your facilities engineer rather than for a supplier, and each one changes what you should buy.
1
One
Whether distribution is available at all
A duct-mounted source stops being a point in the room and becomes part of the supply, which is the only way one unit serves two arms of a split plan evenly. That option exists or it does not, and the answer is not a matter of degree. Ask three things: is the supply ducted rather than cassette-based, is there an accessible section of duct serving the public zone, and will your landlord or building management allow a connection into it. Two yeses and a no is a no. Where the answer is no, stop comparing rated volumes altogether, because you are choosing between two point sources and the smaller one is the correct purchase. Where the answer is yes, the connection point matters more than the badge on the machine.
Tip: Ask for the duct layout and the floor plan in the same email. Half the sizing questions I am sent could be answered in ten minutes with both drawings side by side.
The Vaayu mounts to a wall or into HVAC as standard, which is why it stays the answer at this size even when a larger machine is on the table.
If you do connect, you are connecting into a system that already has a direction. Output introduced into the supply goes wherever the supply goes, which is the point - and also the risk, because on many diagnostic floors the same air handling serves rooms you have deliberately excluded. That is the single most important thing to check before you spend ₹25,999, and it is checked on a drawing rather than by walking the building. If the public zone has its own supply branch, a duct connection is clean and the exclusions hold. If the whole floor is on one system, placement alone cannot enforce your zero list, and the honest response is to run lower, run shorter, or run nothing at all until the mechanical picture changes.
Tip: Trace the branch serving reception on the drawing and see which other rooms are on it. That single line decides more than any coverage figure.
The Angaan is designed around the duct connection. On a floor where that connection is not available or not appropriate, its advantage is theoretical.
Before you solve the reach problem, check that it is a reach problem. If the second waiting arm is open to the link concourse with no door, it is part of one connected volume and the fade toward its far end is normal and acceptable - a room is allowed to be quieter at one end. If it is behind glazing with a door, it is a separate volume, and a separate volume takes its own low source rather than a bigger machine trying to push air round a corner. Owners regularly ask me for more output when the honest answer is either that the far end is fine as it is, or that it is a different room and needs a ₹749 bottle. Neither of those answers costs ₹25,999, which is why it is worth spending an afternoon on the question.
Tip: Walk from one arm to the other. If you have to open something, you have two volumes. If not, you have one room with a quiet end.
Where the far arm is genuinely a second volume, a second small source is the answer, and a second Vaayu is almost never it.
Capacity and reach are different specifications, and at this size buildings fail on reach while owners shop on capacity.
A machine rated at six times your volume still cannot turn a corner. That is a question for the duct, not for the datasheet.
Mountable as standard: the Vaayu can be freestanding, wall-mounted or HVAC-mounted, which is why a 500 cubic metre split plan usually ends here rather than one rung up.
Find your building in the left-hand column. The right-hand column is the recommendation, and two of the four end below what you were probably expecting.
The SOSA plan
What accessible duct work changes, and what it does not
Your mechanical situation
What it makes possible
Ducted supply with an accessible branch serving the public zone only
The best case. Mount one machine to that branch and both arms are served evenly. At 500 cubic metres the correct unit is the smaller one. View →
Ducted supply, but one system serving the whole floor
Technically possible and usually the wrong idea. The same branch feeds rooms you excluded, so placement cannot hold the boundary. Run lower and shorter, or standalone in the public zone instead. View →
Cassette units, sealed ceiling, no accessible duct
You are choosing between point sources, so choose the smaller. One unit at the elbow where the arms meet, adjustable, and each arm fades toward its far end. The larger machine buys you nothing here.
Second arm behind glazing with a door
Two volumes rather than one reach problem. One source for the main public volume, and a reed at ₹749 to ₹849 for the separate arm, same fragrance, lower level.
Worth its price only where the duct is: 3,000m³, an 800ml reservoir and programmable schedules, built to run from the air handling rather than to stand in the corner of a waiting room.
A larger machine cannot turn a corner. If your waiting areas are two arms off a concourse, you are shopping for distribution, and distribution is sold by your ductwork rather than by me.
— Sonal Sahani, SOSA
Where each machine genuinely belongs
Two ratings, and the buildings that actually need them
Chosen by the duct first and the volume second, which is the reverse of how these products are usually sold. Made in India, and a portion of every order supports girl-child education through Nanhi Kali.
The SOSA multi-service specification
Chosen by the duct run first, and by the volume second
SOSA publishes no installation, commissioning or maintenance service, so a duct connection is work for your own contractor and should be scoped with them before you order. Fragrance is an ambience decision like lighting or signage, with no health, therapeutic or clinical claim of any kind, and no claim that it affects how a business performs. It works alongside your ventilation, cleaning and laboratory protocol, never instead of them, and SOSA products are not medical devices. Collection, processing, bench, imaging, control and changing rooms stay unscented whatever the duct layout allows, staff must be able to switch the source off in seconds, and the clinician's judgement overrides any plan. Ask for a clinic scenting plan and send the mechanical drawing.
SS
ISIPCA Versailles
A note from Sonal
The first time I recommended the smaller machine to a centre that had budgeted for the larger one, I assumed the owner would think I was being difficult. He had 3,000 square feet, a quotation for the bigger unit from somebody else, and a perfectly reasonable expectation that more money meant more coverage. What he had not been asked was whether anybody could open his ceiling.
Nobody could. The supply was cassette-based, the void was sealed, and the building manager had a firm view about it. Which meant the expensive machine would have stood on a wall in one waiting arm doing exactly what a smaller one would do, at more than twice the price. We put a Vaayu at the elbow, set it low, and the far end of each arm is quieter than the middle. That is not a defect; that is a room with a shape.
So ask about the duct before you ask about the coverage figure. We make no health, therapeutic or clinical claim of any kind, and no claim that scenting affects how a centre performs commercially. Fragrance is an ambience decision, like lighting or seating. Clinical rooms stay unscented, and the clinician's judgement overrides any plan. Made in India, and a portion of every order supports girl-child education through Nanhi Kali.
Frequently asked questions
Does a 3,000 sq ft facility need the Angaan rather than the Vaayu?
Rarely, on capacity. The public part of a 3,000 sq ft multi-service plan is typically around 1,460 sq ft or 500 cubic metres, and a Vaayu is rated to 1000m³. The Angaan's 3,000m³ answers a much larger building. What can justify stepping up is distribution across a split plan, and only if there is duct work you can connect to.
What exactly does a duct connection change?
It turns a point source into part of the supply, so the output arrives wherever the supply arrives instead of fading with distance from a box in the corner. That is the only reliable way to serve two waiting arms evenly from one machine. It also means the output goes everywhere that branch goes, which is why the branch layout has to be checked first.
Can I connect a machine to a cassette air conditioner?
No, and this is the situation that catches most centres out. Cassette units recirculate room air without a duct run you can introduce anything into. If that is what your public zone has, you are choosing between free-standing sources, and the smaller machine placed well beats the larger one placed identically.
Where should a free-standing unit go in a two-arm waiting plan?
At the elbow, in the link concourse, out of the direct supply blast and in the air travelling toward a return, about a metre up. That position gives both arms something rather than giving one arm everything. Expect each arm to fade toward its far end and treat that as the shape of the building rather than a fault.
Is a bigger machine ever the answer to an uneven room?
No. Output raises the whole gradient, so a bigger machine makes the near end stronger before it makes the far end adequate, and you reach an uncomfortable level near the source long before the far corner improves. Unevenness is answered by placement, by distribution, or by accepting it.
The rung above both: the Meenar at ₹38,500 is quoted for roughly 12,000-18,000 sq ft of HVAC-connected space, which is a flagship or hospital-scale building rather than a 3,000 sq ft facility.
SOSA — Clinic Scenting3,000 sq ft, and the drawing that decides it
About 1,460 sq ft of public area, roughly 500 cubic metres, and a machine chosen by whether your building has a duct you can reach. Clinical rooms stay unscented whatever the answer. Made in India, and a portion of every order supports girl-child education through Nanhi Kali.
About this guide: Written by Sonal Sahani, ISIPCA Versailles-trained founder and perfumer at SOSA Home & Body. Product recommendations reflect the SOSA range; the planning advice applies to any brand.
Facts verified 5 September 2026 against the live SOSA product pages: 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 90+ 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. Being waterless, it adds no moisture and leaves no residue on surfaces or equipment. 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, metal body, programmable schedules and operation under 42dB, and also runs standalone wall-mounted or lay-flat. The SOSA Meenar (₹38,500) is the largest machine in the range, quoted for roughly 12,000-18,000 sq ft of HVAC-connected space. Ambient scent is an interior and hospitality decision: it works alongside proper ventilation, cleaning and clinical protocol and is not a substitute for any of them, it is not a medical device, and SOSA makes no health, therapeutic or treatment claim of any kind and no claim that fragrance affects bookings, retention or spend. CE, RoHS and SGS are electrical and compliance marks, not medical approval. The hotel-inspired scents are SOSA's own original interpretations; 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.
Imagine if Stars Hollow had its very own candle shop—filled with scents as inviting as Luke's coffee, as warm as a hug from Sookie, and as delightful as one of Lorelai's movie marathons. Welcome to Sosa home and body's very own newsletter!
Choosing a selection results in a full page refresh.