★ SOSA Vaayu · monthly consumption
Every format hides its consumption in a different unit. Convert them all to millilitres a month and the comparison finally makes sense
★ ★ ★ ★ ★
★★★★★
"Working out that each reed bottle eats about thirty millilitres a month was the first time any of this was comparable."
Six-point villa · planning
★★★★★
"I had eight bottles running and no idea what that added up to. It is roughly a quarter of a litre a month."
Farmhouse · reed audit
★★★★★
"Nobody told me the Vaayu ships with four hundred millilitres and no refill on sale. I asked SOSA before ordering."
Pre-purchase question
★★★★★
"The point that a 130ml bottle consumes about the same per month as a 50ml one, just for longer, saved me a wasted order."
130ml · duration not strength
★★★★★
"For a guesthouse I need a monthly number, not a per-bottle one. This is the only page that gave me one."
Guesthouse · budgeting
★★★★★
"I run the machine four hours a day rather than continuously, and the arithmetic changes completely."
Timer · consumption
★★★★★
"Working out that each reed bottle eats about thirty millilitres a month was the first time any of this was comparable."
Six-point villa · planning
★★★★★
"I had eight bottles running and no idea what that added up to. It is roughly a quarter of a litre a month."
Farmhouse · reed audit
★★★★★
"Nobody told me the Vaayu ships with four hundred millilitres and no refill on sale. I asked SOSA before ordering."
Pre-purchase question
★★★★★
"The point that a 130ml bottle consumes about the same per month as a 50ml one, just for longer, saved me a wasted order."
130ml · duration not strength
★★★★★
"For a guesthouse I need a monthly number, not a per-bottle one. This is the only page that gave me one."
Guesthouse · budgeting
★★★★★
"I run the machine four hours a day rather than continuously, and the arithmetic changes completely."
Timer · consumption
✓ A 50ml reed bottle consumes roughly 27–36ml a month · a 130ml roughly 31–40ml a month ✓ Vaayu 400ml tank at 90+ days a fill — arithmetic on the specification, about 4.4ml a day ✓ SOSA does not currently sell a separate Vaayu refill oil — ask before you buy if supply matters
Founder Diaries · Large-Space Scenting · Monthly Consumption
One reed point: a 50ml bottle over its 6–8 week life works out at roughly 27–36ml a month; a 130ml over 14–18 weeks at roughly 31–40ml a month. Call it 30–40ml a month per scented point.
One Vaayu: 400ml over the specified 90+ days is about 4.4ml a day, or roughly 133ml a month — arithmetic on the manufacturer figure at a mid setting, not a measurement. Run it on a timer and that falls.
The supply note: 400ml in the box, no separate Vaayu refill oil on sale today. Ask SOSA before you buy if long-term supply matters.
Sukoon₹1,899The Sukoon at ₹1,899 holds 500ml of water and runs sixteen to eighteen hours on low; the Boond at ₹899 holds 300ml and runs about six hours a fill. Neither figure is a fragrance figure. How much water-based Hotel Collection you put into that tank is a decision you make each time you fill it, and SOSA does not publish a millilitres-per-tank number because there isn't one to publish. The honest method is to measure your own: note the date you open a 100ml bottle at ₹999, note the date it finishes, and divide. Most people are surprised — an ultrasonic run on demand for an hour or two a day is usually the smallest monthly consumer in the house.
Oil refill · ₹7–8 per ml₹2,399 / 300mlShop → 
Sukoon · dose it yourself₹1,899Shop → 
Vaayu · 400ml in the box₹11,999Shop →
SOSA Vaayu specifications (verified from the live product page, August 2026): ₹11,999 (the product page displays a rounded ₹12,000). Waterless cold-air nebulisation — pressurised air atomises undiluted fragrance oil into a dry nano-mist; no water, no heat, residue-free. Coverage up to 1000m³, about 2,000–3,000 sq ft. 400ml refillable tank, 90+ days per fill at a mid intensity setting. Bluetooth app plus onboard buttons, 1h / 4h / 8h / 24h timers, adjustable mist intensity, auto-stop and key-lock. Under 38 dB. DC 12V / 1A, 5W. 165 × 80.5 × 215 mm, 0.9 kg, black or white. Freestanding or wall / HVAC mount. CE, RoHS and SGS certified. Ships with four SOSA Hotel Collection fragrances at 100ml each (400ml in total) in one of three combos chosen at checkout. SOSA does not currently sell a separate Vaayu refill oil; the 400ml supplied in the box is the fragrance available at the time of writing, and buyers who need long-term supply should confirm current refill availability with SOSA before purchasing. The cold-air oil supplied with the Vaayu is a different product from the water-based Hotel Collection sold for ultrasonic machines (15ml ₹299 · 100ml ₹999 · 300ml ₹1,799), which must not be used in a Vaayu despite sharing scent names. Other SOSA machines: Boond 300ml ₹899 (~150 sq ft) · Sukoon 500ml ₹1,899 (270–320 sq ft) · Megh 6L ₹3,499 (~215 sq ft — a runtime and humidity machine, not a coverage upgrade) · Aangan ₹25,999 (~8,000–10,000 sq ft) · Meenar ₹38,500 (12,000–18,000 sq ft) · Safar car diffuser ₹3,999. Reed diffusers 50ml ₹749–₹849 (6–8 weeks) · 130ml ₹1,249–₹1,349 (14–18 weeks) · duo sets ₹1,498–₹1,598 · oil-only refills 300ml ₹2,399 / 500ml ₹3,499. Runtime, consumption and coverage figures are manufacturer specifications and vary with intensity setting, run hours, ceiling height, ventilation and season; any per-month or per-day figure in this guide is arithmetic on those specifications, not a measurement. Electricity costs vary by state tariff. No claim is made that scenting affects ratings, reviews, bookings, occupancy, revenue, health, mood or air quality. Free shipping above ₹499. A portion of every order supports girl-child education through Nanhi Kali. Prices subject to change — see the live product pages.
Before the arithmetic, the fact that changes how you read all of it. The SOSA Vaayu ships with 400ml of cold-air fragrance — four bottles of 100ml — and SOSA does not currently sell a separate Vaayu refill oil. That 400ml is the entire supply available today. The water-based Hotel Collection sold for ultrasonic machines is a different product and does not go in a Vaayu, whatever the shared scent names suggest. If long-term supply matters to your home, write to SOSA and confirm what is available before you spend. With that said: the question of how much fragrance a large home needs per month has a real answer, and it is one number in one unit — millilitres.
Quick answers — read this first
The unit: millilitres a month. Reeds hide consumption in weeks, machines hide it in tank size and run hours. Convert everything to ml a month and the formats become comparable for the first time.One reed point: a 50ml bottle over its 6–8 week life works out at roughly 27–36ml a month; a 130ml over 14–18 weeks at roughly 31–40ml a month. Call it 30–40ml a month per scented point.
One Vaayu: 400ml over the specified 90+ days is about 4.4ml a day, or roughly 133ml a month — arithmetic on the manufacturer figure at a mid setting, not a measurement. Run it on a timer and that falls.
The supply note: 400ml in the box, no separate Vaayu refill oil on sale today. Ask SOSA before you buy if long-term supply matters.
The short answer
Short answer: a large Indian home scented properly with reed diffusers consumes roughly 30–40ml of oil per scented point per month. Six points — a living-dining that needs two, an entrance, two bedrooms and a bath — comes to about 180–240ml a month. A single Vaayu covering the same connected volume works out at roughly 133ml a month on its 400ml / 90+ day specification, and less than that if you schedule it rather than run it continuously.
The mechanism: a reed diffuser evaporates at a rate set by reed count, airflow and composition; you cannot turn it down and it consumes whether or not anyone is home. A cold-air machine consumes only while it is running, at a rate you set. That is why consumption is a spec for one format and a setting for the other, and why comparing them without converting to millilitres is guesswork.
In this guide
Cheapest millilitre in the range
300ml oil refill · ₹2,399
400ml in the box · ask about refills
Vaayu cold-air · ₹11,999
Consumption you set yourself
Sukoon ultrasonic · ₹1,899
Straight answer
How many millilitres of fragrance does a large home actually get through in a month?
1. Count scented points, not rooms. A scented point is one source in one volume of connected air. A large open living-dining is two points, not one, because a reed diffuser is a point source with no propulsion. A closed bedroom is one. A bathroom is one. Most large Indian homes land on five to eight points once you count honestly.
2. Budget 30–40ml a month per reed point. A 50ml bottle lasting 6–8 weeks is 27–36ml a month; a 130ml lasting 14–18 weeks is 31–40ml a month. The larger bottle does not consume much less per month — it simply carries more months in one vessel.
3. Six points is roughly 180–240ml a month. That is between two and three 100ml bottles' worth of oil every month, or a 300ml refill every six to seven weeks. It is a real quantity, and it is the number most people have never worked out.
4. One Vaayu is about 133ml a month at the specification. 400ml divided by 90 days is 4.44ml a day, which is roughly 133ml over a 30-day month. That single unit is specified for up to 1000m³ — about 2,000 to 3,000 sq ft — where the reed points cover one room each. This is arithmetic on the published figures at a mid intensity setting, not a measurement in your house.
5. Timers change the machine figure and nothing changes the reed figure. A reed diffuser consumes at the same rate at 3am in an empty house as it does during a dinner party. A Vaayu on a 4h or 8h schedule consumes only over those hours. That is the single biggest lever on a monthly fragrance figure anywhere in this range.
6. The supply caveat, stated plainly. SOSA does not currently sell a separate Vaayu refill oil. The 400ml in the box is roughly three months at the specified rate, and after that there is no published resupply. Ask SOSA what is available before you commit if that matters to you.
Composed and handmade in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
2. Budget 30–40ml a month per reed point. A 50ml bottle lasting 6–8 weeks is 27–36ml a month; a 130ml lasting 14–18 weeks is 31–40ml a month. The larger bottle does not consume much less per month — it simply carries more months in one vessel.
3. Six points is roughly 180–240ml a month. That is between two and three 100ml bottles' worth of oil every month, or a 300ml refill every six to seven weeks. It is a real quantity, and it is the number most people have never worked out.
4. One Vaayu is about 133ml a month at the specification. 400ml divided by 90 days is 4.44ml a day, which is roughly 133ml over a 30-day month. That single unit is specified for up to 1000m³ — about 2,000 to 3,000 sq ft — where the reed points cover one room each. This is arithmetic on the published figures at a mid intensity setting, not a measurement in your house.
5. Timers change the machine figure and nothing changes the reed figure. A reed diffuser consumes at the same rate at 3am in an empty house as it does during a dinner party. A Vaayu on a 4h or 8h schedule consumes only over those hours. That is the single biggest lever on a monthly fragrance figure anywhere in this range.
6. The supply caveat, stated plainly. SOSA does not currently sell a separate Vaayu refill oil. The 400ml in the box is roughly three months at the specified rate, and after that there is no published resupply. Ask SOSA what is available before you commit if that matters to you.
Composed and handmade in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
TL;DR: budget 30–40ml a month per reed point, so five to eight points in a large home is roughly 150–320ml a month. One Vaayu is roughly 133ml a month on its 400ml / 90+ day spec, less on a timer. Reed oil is cheapest by the 500ml refill at ₹3,499; the Vaayu comes with 400ml and no separate refill is sold today.
Where a monthly millilitre budget gets cheapest
SOSA reed diffuser refill · oil only ₹2,399 / 300ml
If your home runs several reed points, the refill is the line item that decides your monthly figure. It is oil alone — you keep your own glass vessel and reeds — at roughly ₹8 per millilitre against ₹15–17 for a fresh 50ml bottle. At six scented points consuming about 180–240ml a month, a 300ml refill covers roughly six to seven weeks of the whole house; the 500ml at ₹3,499 works out nearer ₹7 per ml and covers about nine weeks. Five scents, same composition as the bottles. Reeds are not sold separately — refresh them every few months.
Part one — why millilitres a month is the only unit that compares like with like
Every fragrance format in this range publishes its consumption in a different unit, and none of them are the unit you need. A reed diffuser is sold by bottle size and lifespan — 50ml, six to eight weeks. An ultrasonic is sold by water tank and runtime — 500ml of water, sixteen to eighteen hours on low — which tells you nothing at all about fragrance, because the fragrance is a few millilitres dosed into that water by you. A cold-air machine is sold by tank and days — 400ml, 90+ days. Three formats, three units, no possible comparison until you convert them all into millilitres of fragrance per month. That conversion is the whole of this page, and it is arithmetic on published figures rather than anything I have measured in your house.
1
THE REED FIGURE · FIXED
About 30–40ml a month, and you cannot turn it down
A 50ml bottle rated at six to eight weeks is living somewhere between 1.4 and 1.8 months, which puts it at 27 to 36 millilitres a month. A 130ml rated at fourteen to eighteen weeks is 3.2 to 4.1 months, or 31 to 40 millilitres a month. The two are close, and that closeness is the point: the larger bottle is not more economical per month in any dramatic way, it simply holds more months. What genuinely moves the reed figure is reed count — six is the calibrated number every SOSA composition is dosed for, nine or ten raises the rate and shortens the bottle roughly in proportion, four does the reverse. And the figure runs continuously. An empty house on a work trip consumes exactly as much as a full one.
The planning rule: 35ml a month per reed point is close enough for any household budget you will ever write.
2
THE ULTRASONIC FIGURE · YOURS TO SET
A dose, not a specification
Sukoon₹1,899The Sukoon at ₹1,899 holds 500ml of water and runs sixteen to eighteen hours on low; the Boond at ₹899 holds 300ml and runs about six hours a fill. Neither figure is a fragrance figure. How much water-based Hotel Collection you put into that tank is a decision you make each time you fill it, and SOSA does not publish a millilitres-per-tank number because there isn't one to publish. The honest method is to measure your own: note the date you open a 100ml bottle at ₹999, note the date it finishes, and divide. Most people are surprised — an ultrasonic run on demand for an hour or two a day is usually the smallest monthly consumer in the house.
The tell: if a seller quotes you a fragrance consumption figure for an ultrasonic machine, ask what dose they assumed. There is no default.
3
THE COLD-AIR FIGURE · A SPEC AND A SETTING
400ml over 90+ days, which is about 133ml a month
The Vaayu takes undiluted oil into a 400ml tank and is specified at 90+ days per fill. Divide and you get 4.44ml a day, or roughly 133ml over a thirty-day month. Stretch the same tank to 120 days and it is 3.33ml a day, about 100ml a month; to 180 days and it is 2.22ml a day, about 67ml a month. All three are arithmetic on a manufacturer specification at a mid intensity setting, and the specification does not tell us how many hours a day it assumes — which is precisely why the timers matter. What you can rely on is the shape of it: one Vaayu consumes roughly what four reed points consume, and is specified to cover up to 1000m³ where those four points cover four rooms. That is the trade, stated in the only unit that makes it visible.
Part two — every format converted into millilitres a month
Here is the whole range in one unit. Every figure in the fourth column is arithmetic on SOSA's published lifespans and tank sizes, not a laboratory measurement, and real consumption moves with ceiling height, ventilation, season and — for the machines — the settings you choose.
Consumption, converted
What one unit of each format gets through in a month
| Format · one unit | Oil it holds | How long that lasts | Millilitres a month | What one unit scents | Where the oil comes from |
|---|---|---|---|---|---|
| Reed on a 500ml refill ★ | 50ml or 130ml in the vessel | 6–8 or 14–18 weeks a fill | ≈ 27–40ml | One room, passively, always on | 500ml ₹3,499 — about ₹7 per ml |
| 50ml reed bottle | 50ml | 6–8 weeks | ≈ 27–36ml | One small to normal room | New bottle ₹749–₹849 — about ₹15–17 per ml |
| 130ml reed bottle | 130ml | 14–18 weeks | ≈ 31–40ml | One normal room, for longer | New bottle ₹1,249–₹1,349 — about ₹10 per ml |
| Boond ultrasonic | Fragrance dosed into 300ml of water | ~6 hrs a water fill | Whatever you dose — not a published spec | ~150 sq ft, on demand | Water-based Hotel Collection 15ml ₹299 · 100ml ₹999 · 300ml ₹1,799 |
| Sukoon ultrasonic | Fragrance dosed into 500ml of water | 16–18 hrs on low a water fill | Whatever you dose — measure your own | 270–320 sq ft, on demand | Hotel Collection, plus three 15ml scents in the box |
| Megh 6L ultrasonic | Fragrance dosed into 6 litres of water | ~100 hrs runtime a fill | Whatever you dose, over far longer between refills | ~215 sq ft — less than the Sukoon; a runtime and humidity machine, never a coverage upgrade | Hotel Collection |
| Vaayu cold-air | 400ml of undiluted oil | 90+ days a fill | ≈ 133ml at 90 days · ≈ 100ml at 120 · ≈ 67ml at 180 | Up to 1000m³ — about 2,000–3,000 sq ft | The 400ml in the box. No separate Vaayu refill oil is sold today |
| The honest caveat: the millilitre figures for the reed and cold-air rows are arithmetic on published lifespans, not measurements — treat them as planning numbers with a comfortable margin either side. The ultrasonic rows genuinely have no fragrance figure, because the dose is yours. And the last row carries the constraint that matters most: the Vaayu arrives with 400ml of cold-air oil and SOSA does not currently sell a separate Vaayu refill. The water-based Hotel Collection is a different product for ultrasonic machines and is not a substitute. Confirm current refill availability with SOSA before buying if long-term supply matters to you. | |||||
Shop this guide
The three ways a large home buys its monthly millilitres
Oil refill · ₹7–8 per ml₹2,399 / 300mlShop → Sukoon · dose it yourself₹1,899Shop → Vaayu · 400ml in the box₹11,999Shop →
The SOSA principle
A reed point consumes whether or not anyone is home. A machine consumes only while it is running.
That single difference is worth more on a monthly fragrance bill than any price comparison between the two formats, and it is the reason a timer is a consumption control rather than a convenience.
Part three — what actually moves your monthly number
Six things move a household's monthly millilitre figure, and they are not the things people expect. The largest by a distance is how many scented points you are running, because consumption scales almost linearly with sources: four points is roughly a third more oil than three, every month, forever. This is why the honest advice for most homes is to scent fewer places properly rather than everywhere thinly. A bedroom nobody sits in during the day does not need a bottle running through the day, and a guest bathroom used twice a month is the first place to stop.
The second is run hours, and it only exists for the machines. A Vaayu has 1h, 4h, 8h and 24h timers and an adjustable mist intensity; between them, a household can halve its cold-air consumption without touching anything else. A reed diffuser has no equivalent, and this is where the two formats genuinely diverge. The third is reed count — nine reeds in a 50ml bottle instead of six raises the rate and shortens the bottle proportionally, so it is a consumption decision as much as a strength one. The fourth is draught: a bottle sitting under a split AC or in direct sun empties weeks early while making the room smell of less, which is the worst possible combination and the commonest placement error in a large home.
The fifth is season. Indian summers move volatiles faster off a reed; a Delhi May and a Pune monsoon are not the same month for a bottle, and any figure on this page should be read with a fortnight of tolerance either side. The sixth is the one people never count: ceiling height. A large home is a cubic problem, not a square one — a 2,000 sq ft flat with nine-foot ceilings is about 510m³, while a 2,000 sq ft villa floor at twelve feet is closer to 680m³. The second one needs more of everything, and it is the reason the Vaayu is specified in cubic metres rather than square feet in the first place. Measure your volume before you plan your millilitres.
Consumption is not a property of the fragrance. It is a property of how many sources you run and for how many hours.
— Sonal Sahani, SOSA
Part four — buying to a monthly figure
Work out your own number first — points multiplied by 35ml, plus a machine figure if you run one — and then read the table below from your answer rather than from the products. It is arranged by monthly consumption, not by price.
The consumption edit
From your monthly millilitres to the thing that supplies them
| If you need this much a month | That is typically | Buy this | Price |
|---|---|---|---|
| Up to 40ml ★ | One scented point — a bedroom, a study, an entrance | One 130ml reed bottle, replaced every 14–18 weeks | ₹1,249–₹1,349 |
| 60–80ml | Two points, or a living-dining treated properly as two | A duo set, then a 300ml refill when they run low | From ₹1,498 · refill ₹2,399 |
| 100–140ml | Three to four points, or one Vaayu at its specified rate | A 500ml refill roughly every three to four months | ₹3,499 · about ₹7 per ml |
| 180–240ml | Five to seven points — a genuinely large home on reeds | A 500ml refill every nine weeks or so, plus fresh reeds a few times a year | ₹3,499 a time |
| Variable, on demand only | You want scent for evenings and guests, not around the clock | Sukoon — you set the dose and the hours | ₹1,899 · three 15ml scents included |
| One connected volume up to 1000m³ | An open-plan floor of 2,000–3,000 sq ft that reeds cannot reach | Vaayu — 400ml included, ≈ 133ml a month at spec | ₹11,999 · ask about refills first |
| Not a consumption answer | Wanting a bigger reed bottle because the room is quiet | Size buys duration, not reach. Add a second source instead | From ₹749 |
Honest notes for buyers: every millilitre-per-month figure here is arithmetic on SOSA's published bottle lifespans and the Vaayu's 400ml / 90+ day specification, at a mid intensity setting — not a measurement, and not a promise. Real consumption varies with room volume, ceiling height, ventilation, reed count, intensity setting, run hours and season. SOSA does not currently sell a separate Vaayu refill oil; the machine ships with 400ml of cold-air fragrance, and buyers who need long-term supply should confirm current availability with SOSA before purchasing. The water-based Hotel Collection is for ultrasonic machines and must not be used in a Vaayu; reed oil does not go in any machine. Warranty terms, servicing, spare parts and bulk supply arrangements are not published — ask SOSA. Reed refills are oil only and replacement reeds are not sold as a separate item; refresh reeds every few months. Stand reed bottles on a tray, keep all fragrance away from children and pets. Composed and handmade in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
One unit, one tank, one monthly figure
SOSA Vaayu · waterless cold-air nebuliser ₹11,999
Pressurised air atomises undiluted oil into a dry nano-mist — no water, no heat, nothing added to the air but fragrance. Specified for up to 1000m³, about 2,000–3,000 sq ft, from a 400ml tank rated at 90+ days a fill, which is roughly 133ml a month by arithmetic. Bluetooth app and onboard buttons, 1h / 4h / 8h / 24h timers, adjustable intensity, auto-stop and key-lock; under 38 dB, 5W, 0.9 kg, freestanding or wall mounted. Four 100ml cold-air fragrances in the box. SOSA does not currently sell a separate Vaayu refill oil — confirm availability with SOSA before buying if long-term supply matters.
SS
ISIPCA
Versailles
Versailles
A note from Sonal
I worked out my own household figure for the first time only a few years ago, and it was larger than I expected. Five points across a not especially large flat, each getting through something close to a 50ml bottle every seven weeks, which is about 180 millilitres a month of oil I had never counted as a monthly thing at all. Nobody experiences fragrance as a monthly quantity — you experience it as an occasional purchase — and that is exactly why the number is worth writing down once.
What I did with mine was reduce the points rather than the quality. The guest bathroom bottle came out; the second bedroom went from six reeds to four. The living room, which is the room anyone actually walks into, stayed exactly as it was. The house smells the same to a visitor and consumes about a third less.
On the Vaayu I will be as plain as I can, because it is the honest thing to do and because you will find out anyway. It arrives with 400ml of cold-air fragrance, which is roughly three months at the specified rate, and we do not sell a separate refill for it today. If a continuing supply is part of your decision, write to us and ask what is available before you order rather than after. I would rather lose the sale than have you discover the gap in month four.
Frequently asked questions
How much fragrance oil does a large home use per month?
Budget roughly 30–40ml a month for each scented point. A large Indian home usually has five to eight points once you count an open living-dining as two, which comes to about 150–320ml a month. A single Vaayu covering the same connected volume works out at roughly 133ml a month on its 400ml / 90+ day specification. All of these are arithmetic on published figures, not measurements.
Does a 130ml reed diffuser use less oil per month than a 50ml?
Barely. A 50ml over 6–8 weeks is 27–36ml a month; a 130ml over 14–18 weeks is 31–40ml a month. At the same six reeds they release at a similar rate — the larger bottle simply carries more months in one vessel, so you buy less often. Size buys duration, not reach and not economy.
How much oil does the SOSA Vaayu use in a month?
400ml divided by the specified 90+ days is about 4.4ml a day, or roughly 133ml over a thirty-day month, at a mid intensity setting. If the tank stretches to 120 days it is nearer 100ml a month, and at 180 days about 67ml. Using the 1h, 4h or 8h timers instead of running continuously is the largest single lever on that number.
Can I buy more fragrance oil for the Vaayu?
Not as a separate SOSA product today. The machine ships with 400ml of cold-air fragrance — four bottles of 100ml — and that is the supply available at the time of writing. The water-based Hotel Collection sold for ultrasonic machines is a different product and is not a Vaayu refill despite the shared scent names. If long-term supply matters to you, confirm current refill availability with SOSA before you buy.
How much Hotel Collection does a Sukoon use per month?
There is no published figure, because the dose is yours. The 500ml tank is water; you add fragrance to it, and how much is a choice you make at each fill. The practical method is to measure your own — date a 100ml bottle at ₹999 when you open it and again when it finishes. Run on demand for an hour or two a day, an ultrasonic is usually the smallest monthly consumer in a house.
Monthly fragrance consumption · 2026
Count your points, multiply by 35ml, and then choose the format — not the other way round
Reed diffusers from ₹749 for 50ml (6–8 weeks) and ₹1,249 for 130ml (14–18 weeks); the oil-only refill is ₹2,399 for 300ml or ₹3,499 for 500ml at roughly ₹7–8 per millilitre. The Sukoon at ₹1,899 lets you set your own dose and hours. The Vaayu at ₹11,999 arrives with 400ml of cold-air fragrance and no separate refill is sold today — ask SOSA before you commit. Free shipping above ₹499, and a portion of every order supports girl-child education through Nanhi Kali.
Refill from ₹2,399 → Vaayu ₹11,999
Continue the read
More on running cost and consumption
- How much oil does a cold-air diffuser use? — why consumption is a setting rather than a spec.
- How long can 400ml last? — the in-box supply treated as the whole budget.
- Whole-home scenting cost per month in India — three real households, costed in rupees.
- The complete running cost and consumption guide — everything on this page and the eight around it, in one place.
- Brand: the SOSA founder story.
Editorial standards & sources
About this guide: Written by Sonal Sahani, ISIPCA Versailles-trained founder and perfumer at SOSA Home & Body, on how much fragrance a large home consumes in a month across reed, ultrasonic and cold-air formats. Every millilitre-per-month figure is arithmetic on SOSA's published bottle lifespans and the Vaayu's 400ml / 90+ day tank specification at a mid intensity setting — not a laboratory measurement and not a guarantee. Real consumption varies with room volume, ceiling height, ventilation, reed count, intensity, run hours and season. No health, mood, air-purification or odour-removal claim is made anywhere on this page: a fragrance product adds scent and does nothing else.SOSA Vaayu specifications (verified from the live product page, August 2026): ₹11,999 (the product page displays a rounded ₹12,000). Waterless cold-air nebulisation — pressurised air atomises undiluted fragrance oil into a dry nano-mist; no water, no heat, residue-free. Coverage up to 1000m³, about 2,000–3,000 sq ft. 400ml refillable tank, 90+ days per fill at a mid intensity setting. Bluetooth app plus onboard buttons, 1h / 4h / 8h / 24h timers, adjustable mist intensity, auto-stop and key-lock. Under 38 dB. DC 12V / 1A, 5W. 165 × 80.5 × 215 mm, 0.9 kg, black or white. Freestanding or wall / HVAC mount. CE, RoHS and SGS certified. Ships with four SOSA Hotel Collection fragrances at 100ml each (400ml in total) in one of three combos chosen at checkout. SOSA does not currently sell a separate Vaayu refill oil; the 400ml supplied in the box is the fragrance available at the time of writing, and buyers who need long-term supply should confirm current refill availability with SOSA before purchasing. The cold-air oil supplied with the Vaayu is a different product from the water-based Hotel Collection sold for ultrasonic machines (15ml ₹299 · 100ml ₹999 · 300ml ₹1,799), which must not be used in a Vaayu despite sharing scent names. Other SOSA machines: Boond 300ml ₹899 (~150 sq ft) · Sukoon 500ml ₹1,899 (270–320 sq ft) · Megh 6L ₹3,499 (~215 sq ft — a runtime and humidity machine, not a coverage upgrade) · Aangan ₹25,999 (~8,000–10,000 sq ft) · Meenar ₹38,500 (12,000–18,000 sq ft) · Safar car diffuser ₹3,999. Reed diffusers 50ml ₹749–₹849 (6–8 weeks) · 130ml ₹1,249–₹1,349 (14–18 weeks) · duo sets ₹1,498–₹1,598 · oil-only refills 300ml ₹2,399 / 500ml ₹3,499. Runtime, consumption and coverage figures are manufacturer specifications and vary with intensity setting, run hours, ceiling height, ventilation and season; any per-month or per-day figure in this guide is arithmetic on those specifications, not a measurement. Electricity costs vary by state tariff. No claim is made that scenting affects ratings, reviews, bookings, occupancy, revenue, health, mood or air quality. Free shipping above ₹499. A portion of every order supports girl-child education through Nanhi Kali. Prices subject to change — see the live product pages.