★ SOSA Refill Planning
One fragrance, one refill day, one order cycle - across every machine on the site
★ ★ ★ ★ ★
★★★★★
"One refill day for all six machines. Everything on site now smells the same age, which was the problem we could not name before."
SOSA Vaayu · refill day
★★★★★
"We keep one spare fill per machine on the shelf. No unit has run dry since we started doing that."
SOSA Vaayu · buffer stock
★★★★★
"Ordering at around day 50 of a 75 day cycle means stock arrives before anything is empty."
SOSA Vaayu · order timing
★★★★★
"We changed fragrance across the whole site on one day rather than machine by machine. Much cleaner."
SOSA Vaayu · fragrance change
★★★★★
"Bottles capped, cupboard away from the window. The storage rules turned out to be simple."
SOSA Vaayu · storage
★★★★★
"The Angaan reservoir is 800ml and sits on a different cycle, so we noted it separately on the sheet."
SOSA Angaan · 800ml reservoir
★★★★★
"One refill day for all six machines. Everything on site now smells the same age, which was the problem we could not name before."
SOSA Vaayu · refill day
★★★★★
"We keep one spare fill per machine on the shelf. No unit has run dry since we started doing that."
SOSA Vaayu · buffer stock
★★★★★
"Ordering at around day 50 of a 75 day cycle means stock arrives before anything is empty."
SOSA Vaayu · order timing
★★★★★
"We changed fragrance across the whole site on one day rather than machine by machine. Much cleaner."
SOSA Vaayu · fragrance change
★★★★★
"Bottles capped, cupboard away from the window. The storage rules turned out to be simple."
SOSA Vaayu · storage
★★★★★
"The Angaan reservoir is 800ml and sits on a different cycle, so we noted it separately on the sheet."
SOSA Angaan · 800ml reservoir
★ The two machines and their refill cycles
SOSA Vaayu400ml tank, four to five fills a yearView ₹11,999
SOSA VaayuEvery unit on the same refill dayView ₹11,999
SOSA Angaan800ml reservoir on its own cycleView ₹25,999
✓ A 400ml fill lasting up to about 75 days at typical use means roughly four to five refill days a year ✓ Order at about two thirds of the cycle so stock arrives before any machine runs dry ✓ Made in India · independent, not affiliated with any hotel · a portion funds girl-child education
Founder Diaries · Multi-Machine Buying · Refill Planning
How often do commercial scent machines need refilling? For the SOSA Vaayu (₹11,999), a 400ml fill lasts up to about 75 days at typical use, which works out at roughly four to five fills a year per machine. The interval shortens if you raise the intensity or extend daily run hours, so log the actual dates for one quarter and build the calendar on your own numbers rather than the maximum.
Should every machine on a site use the same fragrance? Yes, and it should be changed everywhere on the same day. Different scents in adjacent zones make one building read as several, and a staggered changeover leaves a transition at every doorway for weeks. Order one profile for every SOSA Vaayu (₹11,999) and SOSA Angaan (₹25,999) on site and swap them together.
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, adjustable intensity, operation under 38dB, DC 12V/1A at 5W, auto-stop and key-lock, and CE, RoHS and SGS certification. 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. Refill intervals on this page are arithmetic from those published figures; actual usage depends on settings and hours and is confirmed on a consultation. 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.
Refill planning looks like a procurement chore and is really a consistency problem. Machines filled on different weeks drift apart, and a building where each zone is running fragrance of a different age is exactly the thing visitors notice without being able to say why.
Quick answers — read this first
How should I plan bulk fragrance refills for several scent machines? Put every machine on one fragrance and one refill day. A SOSA Vaayu (₹11,999) holds 400ml lasting up to about 75 days at typical use, which is four to five refill days a year, so order at roughly two thirds of the cycle and keep one spare fill per machine as a buffer. Fill every unit on the same date so no machine on the site is running older or fresher fragrance than its neighbours.How often do commercial scent machines need refilling? For the SOSA Vaayu (₹11,999), a 400ml fill lasts up to about 75 days at typical use, which works out at roughly four to five fills a year per machine. The interval shortens if you raise the intensity or extend daily run hours, so log the actual dates for one quarter and build the calendar on your own numbers rather than the maximum.
Should every machine on a site use the same fragrance? Yes, and it should be changed everywhere on the same day. Different scents in adjacent zones make one building read as several, and a staggered changeover leaves a transition at every doorway for weeks. Order one profile for every SOSA Vaayu (₹11,999) and SOSA Angaan (₹25,999) on site and swap them together.
The short answer
Short answer: run one fragrance across the whole site, fill every machine on a single refill day, and order at about two thirds of the cycle. A SOSA Vaayu (₹11,999) holds 400ml lasting up to about 75 days at typical use, which is four to five refill days a year, and a SOSA Angaan (₹25,999) holds 800ml on its own cycle.
The pick: one fragrance for every SOSA Vaayu (₹11,999) and SOSA Angaan (₹25,999) on the site, refilled together rather than machine by machine.
Next step: send your machine list and run hours and we will build the refill calendar and confirm the volumes with you - book a free scenting plan.
In this guide
The point of a refill plan is not to save money on oil. It is to make sure every machine on the site is running the same fragrance at the same age, so the building smells like one place all year.
The machines behind the calendar - tap either
400ml per refill
SOSA Vaayu · ₹11,999
800ml per refill
SOSA Angaan · ₹25,999
Plan the refill cycle
Free scenting plan
Straight answer
How do I plan bulk fragrance refills across several scent machines?
Build a calendar around three rules. One fragrance across every machine on the site, including any unit in a sealed room, because different profiles in adjacent zones make one building read as several. One refill day, on which every machine is filled whether or not it is quite empty, so nothing on the site is running fragrance of a noticeably different age. And one order cycle, placed at roughly two thirds of the interval so stock is on the shelf before anything runs low. The numbers behind the calendar come from the machines. A SOSA Vaayu (₹11,999) holds 400ml, and the manufacturer's figure is a fill lasting up to about 75 days at typical use, so plan on four to five refill days a year and order at around day 50 of each cycle. Treat 75 days as the upper bound it is: a higher intensity setting or a longer daily schedule shortens it, which is why we ask facilities teams to write the actual refill date on a sheet for one quarter and then rebuild the calendar on real numbers. A SOSA Angaan (₹25,999) holds 800ml for a zone up to 3,000m³ and sits on its own line, because a bigger reservoir on a different schedule will not fall due on the same date. Keep one spare fill per machine as buffer stock, store bottles capped, upright, cool and out of sunlight, and never top up a part-used tank with a different scent - if you are changing fragrance, change it everywhere on one day. Exact volumes for your site depend on settings and hours and are confirmed on a consultation rather than estimated here. And the honest note that belongs on every plan: fragrance works alongside ventilation and cleaning, not instead of them.
One fragrance, one refill day, one order placed at two thirds of the cycle. A 400ml Vaayu tank at up to about 75 days means four to five refill days a year.
The refill cycle comes off the tank. A SOSA Vaayu holds 400ml lasting up to about 75 days at typical use - four to five refill days a year - while the Angaan holds 800ml on its own schedule. Fill everything on the same date and the site stays consistent.
See the SOSA Vaayu ₹11,999 Book a scenting plan
The calendar
Four to five refill days a year, every machine filled on each of them
The two machines and their two refill cycles
A refill calendar only needs two numbers from the product pages: the tank on each machine and the interval on the smaller one. Both images link through so your facilities team can check them.
400ml per tank, four to five refills a year
SOSA Vaayu
Waterless cold-air nebuliser rated to 1000m³. The 400ml refillable tank lasts up to about 75 days at typical use, which sets a quarterly rhythm most facilities teams can absorb into an existing routine.
From ₹11,999
Every unit filled on the same day
SOSA Vaayu (second unit)
Matching intensity settings across units keeps their intervals aligned, which is what makes a single site-wide refill day workable rather than a rolling series of small jobs.
From ₹11,999
800ml reservoir on its own cycle
SOSA Angaan
HVAC nebulising diffuser rated to 3,000m³, about 8,000-10,000 sq ft, with an 800ml reservoir, metal body and programmable schedules. Twice the capacity means a different interval, so it gets its own line on the calendar.
From ₹25,999
Building a refill calendar your facilities team can follow
Three habits turn a pile of machines into a programme: a single refill day, buffer stock on the shelf, and an order placed before anyone notices a machine getting low.
1
Set one refill day
Fill everything together, even the units that are not empty
Pick a date, put it in the facilities calendar, and fill every machine on the site that morning. A tank that still has fragrance in it is not a reason to skip it - the point is that no zone is running noticeably older or fresher scent than the zone next to it. Write the date on a sheet beside each machine's name and zone, and you have a maintenance record and an ordering history in one place.
Tip: same day, every machine, whether or not the tank is empty.
A Vaayu tank is 400ml and refillable, which is what makes a shared refill day practical.
See SOSA Vaayu →
2
Order at two thirds
Roughly day 50 of a 75 day cycle
Do not order when a machine looks low, because by then you are hostage to a delivery date. Place the order at about two thirds of the interval so stock is on the shelf before the refill day arrives. For a site of four Vaayu at typical use, that means an order roughly every two and a half months covering four 400ml fills, plus whatever the Angaan needs on its own cycle.
The Angaan holds 800ml for a zone up to 3,000m³, so it sits on a separate line of the same order.
See SOSA Angaan →
3
Hold a buffer, store it properly
One spare fill per machine, capped, cool and dark
Keep one spare fill per machine on the shelf. It costs a little working capital and removes every emergency. Store bottles capped and upright, away from sunlight and heat, and label the cupboard with the fragrance name so nobody improvises. And do not top up a part-used tank with a different scent - if the site is changing fragrance, empty and change every machine on the same refill day so the transition happens once, everywhere.
Tip: never mix two fragrances in one tank, and never change a site gradually.
Matched intensity settings across every Vaayu keep the intervals aligned, so one buffer covers the whole site.
See SOSA Vaayu →
The SOSA principle
Nobody walks into a building and thinks the fragrance is three weeks older in the east wing. They just feel that the place is not quite held together, and a shared refill day is the cheapest fix for that there is.
Consistency is a calendar problem long before it is a fragrance problem.
The refill day - one date, every machine, one fragrance
Here is the calendar as a table - what to do, when, and what to keep on the shelf while you wait.
The SOSA plan
The refill calendar for a multi-machine site
| When | What happens |
|---|---|
|
Day 0 - refill day
|
Every Vaayu on site filled with 400ml of the same fragrance, at matched intensity settings, date logged. View → |
|
About day 50 - order day
|
Place the next order at roughly two thirds of the cycle so stock arrives well before the next refill day. View → |
|
Any day - buffer stock
|
One spare fill per machine held capped, upright, cool and out of sunlight, labelled with the fragrance name. View → |
|
The Angaan line
|
An 800ml reservoir on a different interval, tracked separately on the same sheet and confirmed on a consultation. View → |
The volume side of this plan - how many litres a year the calendar adds up to - is worked out step by step in how to calculate monthly fragrance requirements for multiple scent machines, and the money side, including the very small electricity line, is in what it costs to run multiple scent machines every month. If you are buying the machines and the fragrance programme together for one building, buying multiple SOSA Vaayu machines for one location covers how that is arranged.
One fragrance, one refill day, one order cycle
A SOSA Vaayu ₹11,999 tank is 400ml lasting up to about 75 days at typical use. Send your machine list and we will build the refill calendar with you.
A site that refills machine by machine is not running a scenting programme. It is running several small ones that happen to share an address.
— Sonal Sahani, SOSA
What keeps a site consistent
Same fragrance, same intensity, same refill date, everywhere
The SOSA refill planning specification
Two machines, two refill cycles, one calendar. The Vaayu's 400ml tank sets a roughly quarterly rhythm at typical use; the Angaan's 800ml reservoir runs on its own interval and is tracked separately. Both are waterless, so refilling is the only routine there is, and both are made in India. A portion of every order supports girl-child education through Nanhi Kali.
The SOSA refill planning specification
Two machines, two cycles, one refill day
| Machine | Best for | Why it works | Price |
|---|---|---|---|
|
SOSA Vaayu
|
Zones up to 1000m³ each | 400ml refillable tank, up to about 75 days at typical use, four to five refill days a year, adjustable intensity | ₹11,999 View → |
|
SOSA Angaan
|
A zone up to 3,000m³ on HVAC | 800ml reservoir, programmable schedules, tracked on its own line; volumes confirmed on a consultation | ₹25,999 View → |
Two cautions worth putting in writing. First, the up-to-75-day figure is a manufacturer's typical-use maximum, not a promise: build the first calendar on it, then rebuild it after a quarter of logged dates. Second, never stagger a fragrance change across a site - a phased swap leaves a noticeable transition at every doorway for weeks. Honest note: fragrance works alongside ventilation and cleaning, never instead of them, SOSA is independent and not affiliated with any hotel, and we make no claim that scent influences a purchase decision. A free scenting plan will set the calendar and confirm the volumes.
SS
ISIPCA
Versailles
Versailles
A note from Sonal
The most common thing I see on a multi-machine site is not a wrong machine or a wrong fragrance. It is drift. One unit was filled in March, another in April, a third when somebody happened to notice it was low, and by mid-year the building has three slightly different characters that nobody can quite account for. It is not a fragrance problem. It is a calendar problem.
So the plan is dull and it works. One fragrance across every machine. One refill day, on which every Vaayu gets a fresh 400ml whether or not it is empty. One order placed at about two thirds of the cycle, and one spare fill per machine sitting on a shelf so nothing ever becomes an emergency. An Angaan, with its 800ml reservoir, keeps its own line on the same sheet because it will not fall due on the same date.
Two honest things. The 75-day figure is a typical-use maximum and it moves with your intensity and hours, so log the real dates for a quarter and trust your own numbers over mine. And fragrance works alongside cleaning and ventilation, never instead of them - no refill schedule will fix a smell that needs a window opened. Everything is made in India, and a portion of every order supports girl-child education through Nanhi Kali.
Frequently asked questions
How often do I need to refill several scent machines?
A SOSA Vaayu at Rs 11,999 holds 400ml, and the manufacturer's figure is that a fill lasts up to about 75 days at typical use. That is roughly four to five refill days a year per machine. The interval shortens with higher intensity or longer daily hours, so log actual dates for a quarter and build the calendar on your own numbers.
Should all machines be refilled on the same day?
Yes. Fill every unit on the site on one date even if some tanks are not empty. If machines are topped up piecemeal, different zones end up running fragrance of noticeably different ages, which is exactly the inconsistency visitors sense without being able to name it.
When should I place the bulk order?
At about two thirds of the cycle, which for a 75 day interval is roughly day 50. Ordering when a machine looks low leaves you dependent on a delivery date. Keeping one spare fill per machine on the shelf as buffer stock removes the remaining risk entirely.
How should fragrance be stored between refills?
Capped, upright, cool and out of direct sunlight, in a cupboard labelled with the fragrance name so nobody improvises. Do not decant into unmarked containers and do not top up a part-used tank with a different scent.
What if I want to change the fragrance across the site?
Change it everywhere on one refill day rather than gradually. A phased swap leaves a transition at every doorway for weeks. Empty the tanks, fill every machine with the new profile on the same date, and the building changes character once, cleanly.
Drift is a calendar problem, not a fragrance problem
SOSA — Refill Planning for multi-machine sites & facilities teams
The SOSA Vaayu (₹11,999) holds 400ml lasting up to about 75 days at typical use, which is four to five refill days a year; the SOSA Angaan (₹25,999) holds 800ml on its own cycle. Both made in India, and a portion of every order supports girl-child education through Nanhi Kali. Send your machine list and run hours and we will build the calendar and confirm the volumes.
Book a free scenting plan → SOSA Vaayu · ₹11,999
One more look - the two machines that do the job
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, adjustable intensity, operation under 38dB, DC 12V/1A at 5W, auto-stop and key-lock, and CE, RoHS and SGS certification. 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. Refill intervals on this page are arithmetic from those published figures; actual usage depends on settings and hours and is confirmed on a consultation. 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.