★ SOSA for Electronic City Business Hotels
Five numbers to work out before you replace a single room spray - none of them is an ROI figure
★ ★ ★ ★ ★
★★★★★
"My reception now smells like a five-star lobby. Guests comment on it before they even reach the desk."
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."
SOSA Vaayu · spa & salon
★★★★★
"Set the timer once and forgot about it. Runs only during store hours, refills last weeks. Exactly what I wanted."
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."
SOSA Vaayu · large home
★★★★★
"The app scheduling is the best part - strong in the mornings, gentle in the evening. Clinic feels calm all day."
SOSA Vaayu · wellness studio
★★★★★
"Paired it with the SOSA hotel oils. The projection is genuinely lobby-strength - nothing like a plug-in."
SOSA Vaayu · workspace
★★★★★
"My reception now smells like a five-star lobby. Guests comment on it before they even reach the desk."
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."
SOSA Vaayu · spa & salon
★★★★★
"Set the timer once and forgot about it. Runs only during store hours, refills last weeks. Exactly what I wanted."
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."
SOSA Vaayu · large home
★★★★★
"The app scheduling is the best part - strong in the mornings, gentle in the evening. Clinic feels calm all day."
SOSA Vaayu · wellness studio
★★★★★
"Paired it with the SOSA hotel oils. The projection is genuinely lobby-strength - nothing like a plug-in."
SOSA Vaayu · workspace
★ The two machines behind the calculation
SOSA VaayuLobby, 400ml tank, up to 75 daysView ₹11,999
SOSA VaayuRoughly 1.5 units a month, 10hr scheduleView ₹11,999
SOSA AngaanA larger lobby, 800ml reservoirView ₹25,999
✓ Named app and key-lock holder, refill interval and run hours - all confirmed before you buy, not after ✓ No ROI, occupancy or review figure attached - this is a running-cost and scope calculation, honestly ✓ Made in India · independent, not affiliated with any hotel · a portion funds girl-child education
Founder Diaries · Commercial Scenting Guides · Bengaluru
How much does a SOSA Vaayu cost to run each month in a hotel lobby? Roughly 1.5 units of electricity a month on a ten-hour daily schedule, given its 5W draw. A refill oil price is not quoted generically because it depends on the fragrance and volume ordered, and is confirmed on a consultation rather than guessed at.
Should guest rooms be included when a hotel moves from room sprays to continuous diffusion? No. Guest rooms should stay out of scope for continuous ambient scenting, because a guest cannot leave their own room the way they can walk past a lobby diffuser. Continuous diffusion belongs in shared, public areas like the lobby, not inside individual guest rooms.
See the SOSA Vaayu Book a scenting plan
Facts verified 24 August 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 up to about 75 days depending on intensity and run hours, Bluetooth app and button control, 1h/4h/8h/24h timers, operation under 38dB, key-lock for public spaces, and a 5W draw of roughly 1.5 units of electricity a month on a ten-hour daily schedule. 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. Scent enhances the ambience and perceived quality of a space; it works alongside proper ventilation and cleaning and is not a substitute for either, and SOSA makes no claim that fragrance alone influences a purchase decision. 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.
Replacing room sprays with continuous commercial diffusion is a running-cost and scope decision, not a revenue one. Here are the five numbers to work out before you sign anything, in order.
Quick answers — read this first
What should a hotel calculate before replacing room sprays with continuous commercial diffusion? Five things: the actual volume of the space in cubic metres, not square feet; the hours it genuinely needs to run each day; the refill interval - a SOSA Vaayu's (Rs 11,999) 400ml tank lasts up to about 75 days depending on intensity and hours; who holds the app and key-lock; and whether guest rooms should be in scope at all, which they should not, since a guest cannot leave their own room.How much does a SOSA Vaayu cost to run each month in a hotel lobby? Roughly 1.5 units of electricity a month on a ten-hour daily schedule, given its 5W draw. A refill oil price is not quoted generically because it depends on the fragrance and volume ordered, and is confirmed on a consultation rather than guessed at.
Should guest rooms be included when a hotel moves from room sprays to continuous diffusion? No. Guest rooms should stay out of scope for continuous ambient scenting, because a guest cannot leave their own room the way they can walk past a lobby diffuser. Continuous diffusion belongs in shared, public areas like the lobby, not inside individual guest rooms.
The short answer
Short answer: calculate five things first: the space's actual volume in cubic metres, the hours it needs to run, the refill interval (a SOSA Vaayu's 400ml tank lasts up to about 75 days, Rs 11,999), who holds the app and key-lock, and whether guest rooms are in scope - they should not be. No ROI or occupancy figure attaches to this decision.
The pick: size the space honestly with a SOSA Vaayu (₹11,999) or, for a larger volume, a SOSA Angaan (₹25,999), and keep guest rooms out of scope.
Next step: bring us your lobby's dimensions and schedule and we will work through all five calculations - book a free scenting plan.
In this guide
Five practical calculations, not a revenue projection. Get these right before signing anything, and guest rooms stay out of scope regardless of what the lobby needs.
The two machines - tap either to look closer
For the lobby
SOSA Vaayu · ₹11,999
For a larger volume
SOSA Angaan · ₹25,999
Ask for a Bengaluru scenting plan
Free scenting plan
Straight answer
What should we calculate before replacing our room sprays with a continuous commercial diffusion system?
Five things, in this order, and none of them is an ROI figure. First, the volume of the space actually being scented, worked out in cubic metres from its real dimensions - not square feet, and not a guess. Second, the hours it genuinely needs to run each day; most hotel lobbies do not need 24 hours of continuous diffusion, and a schedule matched to actual footfall costs less and reads better. Third, the refill interval: a SOSA Vaayu (₹11,999) has a 400ml tank lasting up to about 75 days depending on intensity and run hours, drawing roughly 1.5 units of electricity a month on a ten-hour daily schedule at 5W; a SOSA Angaan (₹25,999) takes an 800ml reservoir for a larger connected volume. Fourth, who holds the app and the key-lock - a single named person or role, not an assumption that "whoever is on shift" will manage it. Fifth, and the one most easily skipped: whether guest rooms should be in scope at all. They should not be. A guest cannot leave their own room the way they can walk past a lobby diffuser, so continuous ambient scenting has no honest place inside individual guest rooms, whatever is decided for the lobby. One number this page will not give you is a refill oil price, because it depends on the fragrance and volume ordered and is confirmed on a consultation rather than quoted generically. A free scenting plan can work through all five calculations against your actual property.
Five calculations, not a revenue projection: volume, run hours, refill interval, who holds the app and key-lock, and whether guest rooms are in scope - they should not be.
One SOSA Vaayu - waterless, 400ml tank up to 75 days, roughly 1.5 units of electricity a month on a ten-hour schedule - covers most lobby volumes. A larger space steps up to the SOSA Angaan. Guest rooms stay out of scope either way.
See the SOSA Vaayu ₹11,999 Book a scenting plan
The five calculations
Work these out before you sign anything - none of them is an ROI number
The two machines behind this calculation
Two machines, and the calculations above decide which one and how many. Both pictures link to the product page.
Lobby and reception, most volumes
SOSA Vaayu
Waterless cold-air nebuliser rated to 1000m³ - about 2,000-3,000 sq ft. 400ml tank lasting up to 75 days, roughly 1.5 units of electricity a month on a ten-hour daily schedule at 5W. Bluetooth app and key-lock.
From ₹11,999
A second zone, same running numbers
SOSA Vaayu (second unit)
The same refill interval and running cost apply to a second Vaayu in a separately air-conditioned zone.
From ₹11,999
A larger lobby or connected volume
SOSA Angaan
HVAC nebulising diffuser rated to 3,000m³, 800ml reservoir, programmable schedules, under 42dB. The larger-volume version of the same five calculations.
From ₹25,999
The five numbers to work out before you sign anything
Five numbers, worked out in order, before a single machine is ordered.
1
Volume and run hours
The two numbers that decide the machine and the schedule
Measure the space in cubic metres, not square feet, using length times width times height. Then work out how many hours a day it genuinely needs to run - most hotel lobbies do not need 24-hour diffusion, and a schedule matched to real footfall costs less than a constant setting.
Tip: convert to cubic metres before comparing to any machine's coverage rating.
2
Refill interval and running cost
Known numbers, not a guess, before you sign
A SOSA Vaayu's 400ml tank lasts up to about 75 days depending on intensity and hours, drawing roughly 1.5 units of electricity a month on a ten-hour daily schedule at 5W. A SOSA Angaan takes an 800ml reservoir for a larger volume. A refill oil price is not quoted here - it depends on the fragrance and volume ordered, and is confirmed on a consultation.
The Angaan's 800ml reservoir is sized for a genuinely larger connected volume than the Vaayu's 400ml tank.
See SOSA Angaan →
3
Who holds it, and what stays out of scope
A named app holder, and guest rooms deliberately excluded
Name one person or role responsible for the app and the key-lock, rather than assuming "whoever is on shift" will manage it. And decide, before anything is installed, that guest rooms are out of scope for continuous ambient scenting - a guest cannot leave their own room, so it has no honest place there.
Tip: guest rooms are out of scope by default, not a smaller version of the lobby setting.
The SOSA principle
The vendors who lead with an ROI or occupancy number are skipping the five calculations that actually matter. The honest version of this decision has no revenue line in it at all.
Volume, hours, refill interval, ownership and scope - that is the whole calculation.
Vaayu or Angaan - sized to what you actually calculated
This table is the practical version of the five calculations, matched to machine and scope.
The SOSA plan
Before replacing room sprays - the five calculations
| What to calculate | What it determines |
|---|---|
|
Volume of the space, in cubic metres
|
Whether a SOSA Vaayu (₹11,999) or Angaan is the right machine. View → |
|
Run hours needed each day
|
The app schedule - most lobbies need far less than 24 hours. View → |
|
Refill interval and running cost
|
A Vaayu's 400ml tank, up to 75 days, roughly 1.5 units of electricity a month. View → |
|
Whether guest rooms are in scope
|
No - guest rooms stay out of continuous ambient scenting entirely. View → |
If the volume calculation is the part you are unsure about, especially with a tall ceiling or a large open lobby, see our guide to sizing a lobby with high ceilings and constantly opening doors for the full arithmetic. And for why guest rooms specifically stay out of scope, that same principle runs through our guide to why corridors need a much lower intensity than the lobby. For sizing questions in general, see our guide to what a Bengaluru business should diagnose before buying a commercial scent machine.
Five calculations, no ROI number
SOSA Vaayu ₹11,999, 400ml tank up to 75 days. Bring us your numbers and we will confirm the rest.
This is a running-cost and scope decision, not a revenue one. The five numbers above are the whole calculation - there is no sixth one about bookings.
— Sonal Sahani, SOSA
The scope question
Named app holder, and guest rooms deliberately left out
The SOSA specification once the numbers are worked out
Two machines, sized to whichever volume the calculation returns. Both waterless and made in India, and both deliberately kept out of guest rooms. A portion of every order supports girl-child education through Nanhi Kali.
The SOSA continuous-diffusion specification
Two machines, five calculations behind them
| Machine | Best for | Why it works | Price |
|---|---|---|---|
|
SOSA Vaayu
|
Most lobby volumes, replacing room sprays in shared areas | 1000m³, 400ml tank up to 75 days, roughly 1.5 units of electricity a month on a ten-hour schedule, under 38dB | ₹11,999 View → |
|
SOSA Angaan
|
A larger lobby or connected volume | 3,000m³ on the building's HVAC, 800ml reservoir, programmable schedules, under 42dB | ₹25,999 View → |
A quick word before you sign anything: ask for these five numbers specifically, and be wary of any proposal that leads with an ROI or occupancy figure instead. A free scenting plan can work through all five with you.
SS
ISIPCA
Versailles
Versailles
A note from Sonal
This is the question I want every Electronic City hotel to ask before signing anything, and it is refreshingly practical compared with the rest of this bank of guides. Replacing room sprays with continuous commercial diffusion is not a single decision - it is five smaller ones, and getting them right before you buy saves more money than any discount a vendor will offer you.
First, the volume of the space actually being scented - in cubic metres, not square feet, worked out from the room's dimensions. Second, the hours it genuinely needs to run, which for most hotel lobbies is far less than 24. Third, the refill interval - a SOSA Vaayu (₹11,999) with its 400ml tank runs up to about 75 days depending on intensity and hours, at roughly 1.5 units of electricity a month on a ten-hour daily schedule; a SOSA Angaan (₹25,999) takes an 800ml reservoir for a larger volume. Fourth, who holds the app and the key-lock - a named person, not "whoever is at the desk." Fifth, and this is the one owners most often skip: whether guest rooms should be in scope at all. They should not be - a guest cannot leave their own room the way they can walk past a lobby diffuser, so continuous scenting has no honest place there.
One number I will not give you is a refill oil price - that is confirmed on a consultation, not guessed at here, because it depends on the fragrance and the volume ordered. And to be clear about what this replaces and what it does not: no ROI, occupancy or review number attaches to any of this - it is a running-cost and scope decision, not a revenue one. SOSA machines are waterless and made in India, and a portion of every order supports girl-child education through Nanhi Kali.
Frequently asked questions
What five things should a hotel calculate before replacing room sprays with continuous diffusion?
The volume of the space in cubic metres, the hours it needs to run each day, the refill interval and running cost, who holds the app and key-lock, and whether guest rooms should be in scope - they should not be.
How long does a SOSA Vaayu's tank last, and what does it cost to run?
The 400ml tank lasts up to about 75 days depending on intensity and run hours. At 5W, it draws roughly 1.5 units of electricity a month on a ten-hour daily schedule. A refill oil price depends on the fragrance and volume ordered and is confirmed on a consultation.
Should guest rooms be included when a hotel moves to continuous commercial diffusion?
No. Guest rooms should stay out of scope entirely, because a guest cannot leave their own room the way they can walk past a lobby diffuser. Continuous ambient scenting belongs in shared, public spaces, not individual guest rooms.
Who should be responsible for the scent machine's app and key-lock?
One named person or role, decided in advance, rather than an assumption that whoever is on shift will manage it. This matters for consistency as much as for accountability.
Should a hotel expect an ROI or occupancy figure as part of this calculation?
No. This is a running-cost and scope decision - volume, hours, refill interval and ownership - not a revenue one. Any proposal offering an occupancy or booking uplift figure has invented that number.
Five calculations, no ROI number
SOSA — Electronic City Hotel Scenting for hotels replacing room sprays with continuous diffusion
The SOSA Vaayu (₹11,999) has a 400ml tank lasting up to 75 days, roughly 1.5 units of electricity a month on a ten-hour schedule; the SOSA Angaan (₹25,999) takes an 800ml reservoir for a larger volume. Both waterless, both made in India, and a portion of every order supports girl-child education through Nanhi Kali. Guest rooms stay out of scope, and no ROI figure attaches to any of this.
Book a free scenting plan → SOSA Vaayu · ₹11,999
One more look - once the numbers are worked out
Continue the read
More from SOSA
Editorial standards & sources
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 24 August 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 up to about 75 days depending on intensity and run hours, Bluetooth app and button control, 1h/4h/8h/24h timers, operation under 38dB, key-lock for public spaces, and a 5W draw of roughly 1.5 units of electricity a month on a ten-hour daily schedule. 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. Scent enhances the ambience and perceived quality of a space; it works alongside proper ventilation and cleaning and is not a substitute for either, and SOSA makes no claim that fragrance alone influences a purchase decision. 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.