★ SOSA Vaayu · running cost guide
The complete arithmetic: 400ml divided every way, five watts priced at every run pattern, and one line honestly left open
★ ★ ★ ★ ★
★★★★★
"One page with the whole arithmetic instead of nine half-answers. I sent it to my property manager."
Villa · complete guide
★★★★★
"The table dividing four hundred millilitres by every fill duration is the thing I had been trying to build in a spreadsheet."
Consumption planning
★★★★★
"Five watts. Twenty-eight rupees a month at my tariff. That settled the electricity worry in one line."
Electricity · 24 hrs
★★★★★
"I run two properties and needed the format comparison with capital and consumable split apart. It is here."
Two properties · budgeting
★★★★★
"Told plainly that the refill is not sold yet, twice, before any sales pitch. That is why I read to the end."
Refill gap · pre-purchase
★★★★★
"The reed labour figure — forty-eight sticks flipped weekly — is the cost I had never put a number on."
Estate · labour ledger
★★★★★
"One page with the whole arithmetic instead of nine half-answers. I sent it to my property manager."
Villa · complete guide
★★★★★
"The table dividing four hundred millilitres by every fill duration is the thing I had been trying to build in a spreadsheet."
Consumption planning
★★★★★
"Five watts. Twenty-eight rupees a month at my tariff. That settled the electricity worry in one line."
Electricity · 24 hrs
★★★★★
"I run two properties and needed the format comparison with capital and consumable split apart. It is here."
Two properties · budgeting
★★★★★
"Told plainly that the refill is not sold yet, twice, before any sales pitch. That is why I read to the end."
Refill gap · pre-purchase
★★★★★
"The reed labour figure — forty-eight sticks flipped weekly — is the cost I had never put a number on."
Estate · labour ledger
★ ★ The whole arithmetic, then the questions ₹11,999 A running cost you can price today ₹2,399 / 300ml
✓ 400ml at 90+ days a fill ≈ 4.4ml a day ≈ 133ml a month — arithmetic on the specification ✓ 5W · 0.12 kWh a day at 24 hrs · about 3.6 kWh a month · roughly ₹22–₹36 by state tariff ✓ SOSA does not currently sell a separate Vaayu refill oil — ask before you buy if supply matters
Founder Diaries · Large-Space Scenting · Running Cost Guide
Electricity: 5W. Twenty-four hours a day is 0.12 kWh, about 3.6 kWh a month — ₹22 to ₹36 at ₹6 to ₹10 a unit. On the 8-hour timer, 1.2 kWh a month, ₹7 to ₹12.
Maintenance: effectively nil. No water means no tank to empty, no descaling and no rinsing — one fill roughly every 90 days and a wipe of the case.
Fragrance supply: 400ml in the box, no separate Vaayu refill oil sold today, and the water-based Hotel Collection is not a substitute. Ask SOSA before buying if this matters to you.
Reed refill₹2,399A monthly fragrance cost is two numbers multiplied together. The first is available: 400ml over the specified 90+ days is about 4.4ml a day, roughly 133ml a month. The second is not. SOSA does not currently sell a separate Vaayu refill oil, so there is no price per millilitre to multiply by, and I will not estimate one — an invented figure would produce a confident-looking three-year total that is fiction. Compare this with the reed range, where both numbers exist: a 500ml refill at ₹3,499 is about ₹7 a millilitre, lasts 14–18 months in one vessel, and gives you ₹195–₹250 per scented point per month. That is what a complete line looks like.
Vaayu · 5W, 400ml included₹11,999Shop → 
Sukoon · a dose you set₹1,899Shop → 
Reeds · priced to the rupee₹3,499 / 500mlShop →
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.
This page collects everything the nine guides around it work through — consumption, electricity, maintenance, whole-home cost — into one place, and it begins with the constraint that shapes 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 whole supply available today, roughly three months at the specified rate. The water-based Hotel Collection sold for ultrasonic machines is a different product and does not go in a Vaayu. So this guide computes what can be computed — and there is a great deal of it — and names the one line that cannot be. If long-term supply matters to you, confirm current refill availability with SOSA before you spend ₹11,999.
Quick answers — read this first
Consumption: 400ml over the specified 90+ days is about 4.4ml a day, roughly 133ml a month at a mid intensity setting. Stretch a fill to 120 days and it is 3.33ml a day; to 180 days, 2.22ml a day.Electricity: 5W. Twenty-four hours a day is 0.12 kWh, about 3.6 kWh a month — ₹22 to ₹36 at ₹6 to ₹10 a unit. On the 8-hour timer, 1.2 kWh a month, ₹7 to ₹12.
Maintenance: effectively nil. No water means no tank to empty, no descaling and no rinsing — one fill roughly every 90 days and a wipe of the case.
Fragrance supply: 400ml in the box, no separate Vaayu refill oil sold today, and the water-based Hotel Collection is not a substitute. Ask SOSA before buying if this matters to you.
The short answer
Short answer: the running cost of a Vaayu has three lines. Electricity is ₹22 to ₹36 a month running continuously and computable to the paisa from a 5W rating. Maintenance is close to zero because the machine holds no water. Fragrance is included for roughly the first quarter from the 400ml in the box and cannot be priced beyond that, because no separate refill is currently sold.
The mechanism: a cold-air nebuliser consumes only while it is misting, at an intensity you set. Everything else in the range consumes differently — a reed diffuser evaporates continuously whether or not anyone is home, and an ultrasonic burns a fragrance dose you choose into water you have to manage. Converting all three into millilitres a month and rupees a month is the only way to compare them, and it is what this guide does.
In this guide
- The straight answer
- Part one — the three lines of a running cost
- Part two — 400ml, divided every way
- Part three — what moves consumption
- Part four — five watts, priced properly
- Part five — every format's running cost, side by side
- Part six — the complete edit, and the questions to settle first
- A note from Sonal
- FAQs
400ml · 90+ days · 5W
Vaayu cold-air · ₹11,999
Fragrance you can restock today
Sukoon ultrasonic · ₹1,899
₹195–₹250 per point per month
500ml oil refill · ₹3,499
Straight answer
What does it cost to run a SOSA Vaayu, and how much fragrance does it get through?
1. Consumption: about 4.4ml a day at the specification. The 400ml tank is rated at 90+ days a fill. Four hundred divided by ninety is 4.44ml a day, which over a thirty-day month is roughly 133ml. That is arithmetic on a manufacturer figure at a mid intensity setting, not a measurement in your house, and it moves with intensity, run hours, ceiling height, ventilation and season.
2. Electricity: ₹22 to ₹36 a month, running continuously. DC 12V at 1A is 5W. Five watts for twenty-four hours is 0.12 kWh a day and about 3.6 kWh a month — ₹21.60 at ₹6 a unit, ₹28.80 at ₹8, ₹36 at ₹10. A full year of continuous running is about 43.8 kWh. Indian tariffs are slabbed and vary by state; use your own per-unit rate.
3. Timers are the real control. On the 8-hour timer the electricity falls to about 1.2 kWh a month and the fragrance consumption falls in proportion to the hours the machine actually mists. The 1h, 4h, 8h and 24h settings and the adjustable intensity are running-cost controls before they are convenience features.
4. Maintenance: effectively nothing. There is no water in the machine, so nothing to empty, rinse or descale — the routine is one 400ml fill roughly every 90 days plus a wipe of the case. No cleaning schedule or servicing interval is published.
5. Fragrance cost: nil for roughly three months, and open after that. The four 100ml bottles are included in the ₹11,999. SOSA does not currently sell a separate Vaayu refill oil, so there is no per-millilitre price to multiply the 4.4ml a day by. The water-based Hotel Collection is a different product for ultrasonic machines and is not a substitute.
6. Compare it against a reed route that can be priced exactly. On the 500ml oil refill at ₹3,499 lasting 14–18 months per vessel, one scented point is ₹195–₹250 a month. Eight points in a villa is ₹1,560–₹2,000 a month, indefinitely, plus forty-eight reeds flipped weekly.
7. Ask before you buy. Refill availability, refill price, scent availability, warranty, servicing, spare parts and bulk terms are the seven things to settle with SOSA in writing. Only the first two decide whether a complete running-cost figure can exist at all.
Composed and handmade in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
2. Electricity: ₹22 to ₹36 a month, running continuously. DC 12V at 1A is 5W. Five watts for twenty-four hours is 0.12 kWh a day and about 3.6 kWh a month — ₹21.60 at ₹6 a unit, ₹28.80 at ₹8, ₹36 at ₹10. A full year of continuous running is about 43.8 kWh. Indian tariffs are slabbed and vary by state; use your own per-unit rate.
3. Timers are the real control. On the 8-hour timer the electricity falls to about 1.2 kWh a month and the fragrance consumption falls in proportion to the hours the machine actually mists. The 1h, 4h, 8h and 24h settings and the adjustable intensity are running-cost controls before they are convenience features.
4. Maintenance: effectively nothing. There is no water in the machine, so nothing to empty, rinse or descale — the routine is one 400ml fill roughly every 90 days plus a wipe of the case. No cleaning schedule or servicing interval is published.
5. Fragrance cost: nil for roughly three months, and open after that. The four 100ml bottles are included in the ₹11,999. SOSA does not currently sell a separate Vaayu refill oil, so there is no per-millilitre price to multiply the 4.4ml a day by. The water-based Hotel Collection is a different product for ultrasonic machines and is not a substitute.
6. Compare it against a reed route that can be priced exactly. On the 500ml oil refill at ₹3,499 lasting 14–18 months per vessel, one scented point is ₹195–₹250 a month. Eight points in a villa is ₹1,560–₹2,000 a month, indefinitely, plus forty-eight reeds flipped weekly.
7. Ask before you buy. Refill availability, refill price, scent availability, warranty, servicing, spare parts and bulk terms are the seven things to settle with SOSA in writing. Only the first two decide whether a complete running-cost figure can exist at all.
Composed and handmade in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
TL;DR: about 4.4ml of oil a day and 133ml a month at the specified rate; electricity ₹22–₹36 a month at twenty-four hours or ₹7–₹12 on an 8-hour timer, from 5W; maintenance effectively nil because there is no water. Fragrance is included for roughly three months from the 400ml in the box and cannot be costed after that — SOSA does not currently sell a separate Vaayu refill oil, so ask first.
The machine this whole guide is about
SOSA Vaayu · waterless cold-air nebuliser ₹11,999
Pressurised air atomises undiluted fragrance oil into a dry nano-mist — no water, no heat, no residue. Up to 1000m³ of coverage, about 2,000–3,000 sq ft depending on ceiling height, from a 400ml refillable tank specified at 90+ days a fill. Bluetooth app plus onboard buttons, 1h / 4h / 8h / 24h timers, adjustable mist intensity, auto-stop and key-lock. Under 38 dB, DC 12V / 1A at 5W, 165 × 80.5 × 215 mm, 0.9 kg, black or white, freestanding or wall and HVAC mounted. CE, RoHS and SGS certified, made in India. Four 100ml cold-air fragrances included in one of three hotel-inspired combos. SOSA does not currently sell a separate Vaayu refill oil — confirm availability before buying if long-term supply matters.
Part one — a running cost has three lines, and only two of them are bills
Most confusion about what a scent machine costs comes from merging three quantities that behave nothing alike. Electricity is a recurring cash cost computable from a wattage. Fragrance is a consumable whose monthly figure is consumption multiplied by price. Capital is paid once and only becomes a monthly number if you choose to divide it. Keep them apart and the whole subject becomes tractable — including the part of it that is currently missing, which is easier to see clearly when it is not tangled up with the other two.
1
LINE ONE · FULLY COMPUTABLE
Electricity, from a published 5W rating
The Vaayu is specified at DC 12V / 1A, which is five watts — less than most LED bulbs. Five watts for twenty-four hours is 0.12 kWh a day, about 3.6 kWh a month and roughly 43.8 kWh a year. At ₹6 a unit that is ₹21.60 a month; at ₹8, ₹28.80; at ₹10, ₹36. There is nothing hidden in this line: the wattage is published, the arithmetic is public, and the only variable is your own tariff, which is slabbed and varies by state. Whatever rate you apply, the answer stays in the tens of rupees. Electricity is never the reason to hesitate over this machine, and any page that makes it sound significant is padding.
The rule: compute it yourself in a minute — watts, divided by a thousand, multiplied by hours, multiplied by your per-unit rate.
2
LINE TWO · HALF AVAILABLE
Fragrance — consumption known, price not
Reed refill₹2,399A monthly fragrance cost is two numbers multiplied together. The first is available: 400ml over the specified 90+ days is about 4.4ml a day, roughly 133ml a month. The second is not. SOSA does not currently sell a separate Vaayu refill oil, so there is no price per millilitre to multiply by, and I will not estimate one — an invented figure would produce a confident-looking three-year total that is fiction. Compare this with the reed range, where both numbers exist: a 500ml refill at ₹3,499 is about ₹7 a millilitre, lasts 14–18 months in one vessel, and gives you ₹195–₹250 per scented point per month. That is what a complete line looks like.
The tell: if a page quotes you a full Vaayu running cost today, ask which price it used and where that price is published.
3
LINE THREE · NOT A BILL
Capital, and how to state it without misleading yourself
The ₹11,999 is paid once. If you want it in a monthly figure for comparison, divide it and say that you have: ₹1,000 a month over twelve, ₹500 over twenty-four, ₹333 over thirty-six, ₹200 over sixty. Its usefulness is comparative. Eight reed points on refill oil cost ₹1,560–₹2,000 every month forever, so against that spend the machine's purchase price is covered inside a year on capital alone. Whether the full comparison holds still depends on line two, which is the point this guide keeps returning to. Maintenance, incidentally, barely earns a line at all: there is no water in the machine, so there is nothing to empty, rinse or descale — one tank fill roughly every 90 days and an occasional wipe.
Part two — 400ml, divided every way
The only fragrance figure SOSA publishes for the Vaayu is 400ml at 90+ days per fill. The specification is a minimum with a plus sign on it, so the honest treatment is to divide 400ml by a range of fill durations and let you read across to the pattern that matches how you would actually run it. Every number below is division, clearly labelled, and none of it is a promise.
The consumption table
What 400ml means at each fill duration
| If one fill lasts | Millilitres a day | Millilitres a month | The 400ml in the box lasts | Typical of | Reed-point equivalent |
|---|---|---|---|---|---|
| 90 days — the published specification ★ | 4.44ml | ≈ 133ml | About 3 months | Mid intensity, the manufacturer's reference point | Roughly four reed points |
| 60 days | 6.67ml | ≈ 200ml | About 2 months | High intensity, continuous, in a large or draughty volume | Roughly six reed points |
| 120 days | 3.33ml | ≈ 100ml | About 4 months | Mid intensity on a 12-hour daily schedule | Roughly three reed points |
| 150 days | 2.67ml | ≈ 80ml | About 5 months | Lower intensity, 8-hour timer, tight room | Between two and three reed points |
| 180 days | 2.22ml | ≈ 67ml | About 6 months | Low intensity on a short daily schedule | Roughly two reed points |
| Per 100ml bottle in the box | — | — | About 22 days at 4.44ml a day | One of the four scents supplied | — |
| The honest caveat: only the 90-day row is a manufacturer specification; the others are arithmetic showing what different fill durations would imply, offered so you can plan against the pattern you will actually run. The specification does not state how many hours a day it assumes, which is why intensity and the timers matter so much. The reed-point column compares against a reed diffuser's roughly 30–40ml a month and is a consumption comparison only — one Vaayu is specified for up to 1000m³ where those points cover one room each. And the constraint behind all of it: SOSA does not currently sell a separate Vaayu refill oil, the machine ships with 400ml, and the water-based Hotel Collection for ultrasonic machines is not a substitute. Confirm current refill availability with SOSA before purchasing if long-term supply matters to you. | |||||
Shop this guide
The three running-cost profiles in the SOSA range
Vaayu · 5W, 400ml included₹11,999Shop → Sukoon · a dose you set₹1,899Shop → Reeds · priced to the rupee₹3,499 / 500mlShop →
The SOSA principle
Consumption is a setting. Cost is consumption multiplied by a price you can look up.
For every reed diffuser and ultrasonic in this range both halves exist and the sum can be done today. For the Vaayu the first half exists and the second does not, and that is the honest shape of this guide.
Part three — what actually moves consumption
Five things move the fragrance figure, and they are worth knowing in order of size. The largest is run hours. A machine that mists for eight hours consumes roughly a third of what one running around the clock consumes, and the Vaayu's 1h, 4h, 8h and 24h timers exist precisely to control this. For a home, a schedule that covers the evening and the first hours of the morning delivers almost everything you would notice from continuous running, at a fraction of the tank. For a rental property, the schedule can be built around turnover rather than around whether a guest is in the room. This one lever is worth more than every other item on this list combined.
The second is intensity, which is adjustable and is not the same lever as run hours. Intensity sets how much oil is atomised per minute of running; hours set how many minutes there are. Running at a lower intensity for longer usually produces a steadier room than running hard in short bursts, and it is easier on the tank. The third is the volume you are actually scenting, and this is where large-home buyers most often go wrong: 1000m³ is a cubic figure, so a 2,000 sq ft floor at nine feet is about 510m³ while the same footprint at twelve feet is closer to 680m³. The taller room needs more of everything. The fourth is air exchange — an open balcony door, a running exhaust or a busy AC pulls scented air out of the space and the machine spends oil replacing it. A sealed room holds fragrance and consumes less; a draughty one consumes more and often smells of less, which is the worst combination.
The fifth is season and placement, which interact. Indian summers move volatiles faster, monsoon humidity changes how a room holds a scent, and a machine placed in the path of a split AC will disperse well but empty faster. None of these five is a fault in the product; they are the reasons a single specification figure can only ever be a reference point. The honest position is that 400ml over 90+ days is where the manufacturer sets the marker, and your own first fill is the only measurement that will ever be about your house. Note the date you fill it and the date it empties, and from then on you will have a figure worth more than anything on this page.
Your first tank is the only consumption study that matters. Write down the date you fill it.
— Sonal Sahani, SOSA
Part four — five watts, priced properly
Electricity is the line people worry about most and should worry about least, so here it is in full. The Vaayu draws DC 12V at 1A — five watts. Divide by a thousand to get kilowatts, multiply by hours, and you have kilowatt-hours: 0.005 kWh an hour, 0.04 kWh over an eight-hour day, 0.12 kWh over a full twenty-four. Across a thirty-day month that is 0.15 kWh at one hour a day, 0.6 kWh at four hours, 1.2 kWh at eight hours, 1.8 kWh at twelve, and 3.6 kWh running continuously. A full year of continuous operation is about 43.8 kWh.
Priced at three illustrative tariffs, continuous running costs ₹21.60 a month at ₹6 a unit, ₹28.80 at ₹8, and ₹36 at ₹10 — or roughly ₹263, ₹350 and ₹438 across a year. On the 8-hour timer the same three rates give ₹7.20, ₹9.60 and ₹12 a month. On the 4-hour timer, ₹3.60, ₹4.80 and ₹6. Indian domestic electricity is billed in slabs that differ by state and by consumption band, so none of these is a quotation of your bill; take the per-unit rate from your own statement and redo the multiplication, which takes about a minute. What the arithmetic establishes reliably is the order of magnitude — tens of rupees a month, not hundreds.
It is worth saying what this does and does not tell you. It tells you that the electricity line will never be the reason to buy or not buy this machine, and that a host running one continuously in a large property is not taking on a meaningful power cost. It does not tell you anything about the fragrance line, which is the one that decides the economics, and it does not tell you anything about the other machines in the range — SOSA does not publish wattage for the Boond, Sukoon or Megh, so I am not going to compute figures for them. Ask SOSA if you need those. Reed diffusers, of course, use none at all, which is a genuine and underrated advantage in a house with unreliable power.
Part five — every format's running cost, side by side
This is the table the nine guides around this page build towards. Capital and consumable are kept apart deliberately, because merging them is how people end up comparing a one-off purchase with a monthly bill and drawing the wrong conclusion.
The complete cost comparison
Capital, consumable, electricity and supply status across the range
| Format | Capital (once) | What it consumes | Consumable, per month | Electricity | Supply status |
|---|---|---|---|---|---|
| Reed diffuser on a 500ml refill ★ | ₹1,249–₹1,349 for the first 130ml bottle | Oil, plus reeds a few times a year | ₹195–₹250 per scented point | None | Fully available — 300ml ₹2,399 · 500ml ₹3,499 |
| Reed diffuser on fresh 50ml bottles | ₹749–₹849 | Oil and vessel each cycle | ₹420–₹610 per point | None | Fully available, five scents |
| Boond ultrasonic · ~150 sq ft | ₹899 | Water, plus a fragrance dose you set | Depends on your dose — Hotel Collection ₹6–₹20 per ml by size | Wattage not published — ask SOSA | Fully available |
| Sukoon ultrasonic · 270–320 sq ft | ₹1,899, three 15ml scents included | Water, plus a fragrance dose you set | Depends on your dose; measure your own over a month | Wattage not published — ask SOSA | Fully available |
| Megh 6L ultrasonic · ~215 sq ft | ₹3,499 | Six litres of water, plus fragrance | Depends on your dose, over ~100 hrs of runtime a fill | Wattage not published — ask SOSA | Fully available. Covers less than the Sukoon — a runtime and humidity machine, never a coverage upgrade |
| Vaayu cold-air · up to 1000m³ | ₹11,999, four 100ml cold-air scents included | Undiluted oil only — no water, no reeds, no wick | ≈133ml a month at spec · nil for the first ~3 months · not priceable after that | 5W — ₹22–₹36 a month at 24 hrs | No separate Vaayu refill oil sold today — ask SOSA before buying |
| Aangan HVAC nebuliser · ~8,000–10,000 sq ft | ₹25,999 | Undiluted oil, ducted into an HVAC system | Commercial scale — discuss with SOSA | Not published | Commercial product; terms not published |
| The honest caveat: reed figures are exact arithmetic on verified prices and stated lifespans, and are planning numbers rather than measurements. Ultrasonic consumable figures cannot be given because the fragrance dose is a user choice, and wattages for the ultrasonic range are not published — ask SOSA rather than trusting an estimate. Vaayu electricity is arithmetic on the verified 5W rating at ₹6–₹10 a unit; tariffs vary by state and slab and no bill is quoted. 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 only and must never be used in a Vaayu, despite the shared scent names; reed oil does not go in any machine. | |||||
Part six — the complete edit, and the questions to settle first
Everything in this guide, arranged as a decision. Read from your own situation rather than from the products, and treat the last column as the thing to settle before any money moves.
The running-cost edit
From your situation to the sensible purchase, with the question to settle first
| Your situation | What to buy | Set-up, once | Monthly | Settle this first |
|---|---|---|---|---|
| One room, no electricity wanted ★ | One 130ml reed diffuser, then the oil-only refill | ₹1,249–₹1,349 | ₹195–₹250 | Nothing — this route is fully priced and fully supplied |
| A 2BHK, three scented points | Three 130ml bottles on 500ml refill oil | ≈ ₹3,900 | ₹585–₹750 | Whether you want scent constantly or on demand |
| You want scent on demand, one main room | Sukoon, 270–320 sq ft, timers and remote | ₹1,899, three scents included | Your own fragrance dose, ₹6 per ml at 300ml | Whether added humidity suits your climate |
| A duplex or two-floor home, five points | Reeds behind closed doors, one machine in the main connected space | ₹6,445 in reeds, plus the machine | ₹975–₹1,250 in reed oil | That scent does not climb stairs — each floor is its own problem |
| One connected floor of 2,000–3,000 sq ft | Vaayu — the genuine case for it | ₹11,999, 400ml included | ₹22–₹36 electricity; fragrance nil for ~3 months, open after | Refill availability and price, in writing, from SOSA |
| Eight scented points in a villa, on reeds | Eight 130ml bottles on 500ml refill oil | ≈ ₹10,400 | ₹1,560–₹2,000, plus 48 reeds flipped weekly | Whether 45–60 minutes a month of flipping is acceptable |
| You need a signed-off three-year budget | Wait, and spend ₹1,899 or ₹2,399 meanwhile | ₹1,899 or ₹2,399 | Priceable to the rupee today | Ask SOSA when a Vaayu refill will be available, then revisit |
| Not a cost answer: a bigger tank | The Megh at 6L covers ~215 sq ft — less than a Sukoon | ₹3,499 | Your own dose | Tank size buys runtime, never coverage. Say it out loud before buying |
Honest notes for buyers: every consumption figure here is arithmetic on SOSA's published specifications — the Vaayu's 400ml tank at 90+ days a fill at a mid intensity setting, and reed bottle lifespans of 6–8 weeks for 50ml and 14–18 weeks for 130ml — rather than laboratory measurement, and real results vary with intensity, run hours, room volume, ceiling height, ventilation, reed count and season. Electricity is computed from the verified 5W rating at illustrative tariffs of ₹6 to ₹10 a unit; Indian tariffs are slabbed and vary by state, and no bill is being quoted. Wattage for the ultrasonic range is not published. SOSA does not currently sell a separate Vaayu refill oil; the machine ships with 400ml of cold-air fragrance, roughly three months at the specified rate, and buyers who need long-term supply should confirm current availability with SOSA before purchasing. The water-based Hotel Collection at 15ml ₹299, 100ml ₹999 and 300ml ₹1,799 is formulated for ultrasonic machines and must not be used in a Vaayu; reed oil does not go in any machine. Warranty length, annual maintenance contracts, installation service, spare parts, app platform support and bulk or corporate terms are not published — ask SOSA rather than assuming. Reed refills are oil only; replacement reeds are not sold separately and should be refreshed every few months. Stand reed bottles on a tray, and 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.
The answer for most homes, and it is not close
SOSA Sukoon · 500ml ultrasonic ₹1,899
If your problem is one normal room rather than an open floor of two to three thousand square feet, this is the machine and the arithmetic is far simpler. 270–320 sq ft of coverage, sixteen to eighteen hours on low from one water fill, a remote with steady, 2H and 4H timers, and three 15ml water-based Hotel Collection fragrances in the box. Restocking is at published prices — 100ml ₹999, 300ml ₹1,799 — so a complete running cost can be worked out this afternoon. It does add a little humidity, welcome in a dry winter and less so in a coastal July, and it is not a coverage substitute for a cold-air machine. I would never sell it as one.
SS
ISIPCA
Versailles
Versailles
A note from Sonal
Running cost is the question that separates people who are browsing from people who are buying, and it is the one most fragrance brands answer worst. The usual approach is to quote a flattering figure at a flattering setting and hope nobody divides it back out. I would rather show the division and let you pick your own row. That is why this guide has a table of 400ml split across six fill durations instead of one confident sentence.
The part I keep repeating is not there for legal cover. The Vaayu arrives with 400ml of cold-air fragrance and we do not currently sell a separate refill for it. That is a real gap in our range, the same kind of gap as the replacement reeds we do not sell for the reed diffusers, and I would rather name it in the second sentence of every page in this cluster than let a buyer find it in month four. If it matters to you — and on an eleven-thousand-rupee machine it should — write to us before you order and ask what is available.
What I can promise is that the arithmetic on this page is real. Five watts is five watts; four hundred divided by ninety is four point four; ₹3,499 for five hundred millilitres over fourteen to eighteen months is one hundred and ninety-five to two hundred and fifty rupees a point a month. Those numbers will survive any scrutiny you put them under, because they are division rather than marketing. Everything we make is composed and handmade in small batches in Pune, tested through 45°C summers and 85% monsoon humidity, and a part of every order funds a girl's classroom through Nanhi Kali.
Frequently asked questions
What is the running cost of the SOSA Vaayu per month?
Electricity is ₹22 to ₹36 a month running twenty-four hours a day, or ₹7 to ₹12 on the 8-hour timer, computed from the verified 5W rating at ₹6 to ₹10 a unit. Maintenance is effectively nil because the machine holds no water. Fragrance is included for roughly three months from the 400ml in the box, and cannot be priced after that because SOSA does not currently sell a separate Vaayu refill oil.
How much fragrance oil does a cold-air diffuser use?
For the Vaayu, 400ml over the specified 90+ days is about 4.4ml a day or roughly 133ml a month at a mid intensity setting. If a fill stretches to 120 days it is 3.33ml a day, and at 180 days 2.22ml. Consumption is a setting rather than a fixed spec — run hours and intensity move it most, followed by room volume, air exchange and season.
How long does the 400ml in the box last?
About three months at the published 90+ day rate, longer on a timer or at a lower intensity. Split across the four 100ml bottles supplied, each one is roughly twenty-two days at 4.44ml a day if you run a single scent at a time. Your own first fill is the only figure that will ever be specific to your house — note the date you fill it and the date it empties.
Can I buy Vaayu refill oil, and what does it cost?
Not as a separate SOSA product today, and there is therefore no price to quote. The machine ships with 400ml of cold-air fragrance and that is the supply available at the time of writing. The water-based Hotel Collection sold for ultrasonic machines is a different formulation and is not a Vaayu refill despite sharing scent names. Write to SOSA and confirm current availability before buying if long-term supply matters to you.
Is a Vaayu cheaper to run than several reed diffusers?
It cannot be answered completely today. Eight reed points on the 500ml refill cost ₹1,560 to ₹2,000 a month indefinitely, which is a complete figure. The Vaayu costs ₹11,999 once plus ₹22 to ₹36 a month of electricity, with fragrance included for roughly the first quarter and no priced resupply after that. Two of the three lines favour the machine; the third is missing, and it is the one that decides.
Does the Vaayu need servicing, and what is the warranty?
Neither is published. What is verified is CE, RoHS and SGS certification, a DC 12V / 1A 5W supply, under 38 dB operation, 0.9 kg, and freestanding or wall and HVAC mounting. Warranty length, annual maintenance contracts, installation service and spare parts are all unstated, and I will not invent them — ask SOSA and get the answers in writing before spending ₹11,999.
Vaayu running cost & consumption · 2026
Four hundred millilitres, five watts, and one open question — ask it before you spend
The Vaayu at ₹11,999 covers up to 1000m³ from a 400ml tank at 90+ days a fill, draws 5W, runs under 38 dB and holds no water at all — four 100ml cold-air fragrances included, no separate refill sold today. The Sukoon at ₹1,899 covers 270–320 sq ft on demand with fragrance you can restock at published prices. Reed diffusers from ₹749 for 50ml and ₹1,249 for 130ml run at ₹195–₹250 a scented point a month on the ₹3,499 500ml oil refill. Free shipping above ₹499, and a portion of every order supports girl-child education through Nanhi Kali.
See the Vaayu → Refill from ₹2,399
Continue the read
The nine guides behind this page
- How much does it cost to run a cold-air scent diffuser at home? — two costs, and one of them is tiny.
- How much fragrance oil does a cold-air diffuser use? — consumption as a setting rather than a spec.
- How long does fragrance oil last in a cold-air diffuser? — the honest range around 90+ days.
- How long can 400ml last in a scent machine? — the in-box supply treated as the whole budget.
- How long does 400ml last at eight hours a day? — one realistic pattern, worked properly.
- How much fragrance does a large home need per month? — every format converted to millilitres.
- How much does whole-home scenting cost per month in India? — three households costed in rupees.
- Is a cold-air diffuser expensive to maintain? — the labour ledger, and what is unpublished.
- What is the monthly running cost of SOSA Vaayu? — the seven questions to send before you buy.
- 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, collecting the running cost and fragrance consumption of the SOSA Vaayu and the formats around it into one reference. Consumption figures are arithmetic on the published 400ml / 90+ day tank specification at a mid intensity setting; only the 90-day row is a manufacturer figure and the others are division offered for planning. Electricity is computed from the verified 5W rating at illustrative tariffs of ₹6, ₹8 and ₹10 per unit — Indian domestic tariffs are slabbed and vary by state, and no bill is quoted. Wattage for the ultrasonic range is not published and is not estimated. Reed figures are arithmetic on verified prices and stated bottle lifespans. The Vaayu fragrance cost line is deliberately left open because SOSA does not currently sell a separate Vaayu refill oil. Warranty, AMC, installation, spare parts, app platform support and bulk terms are not published and are not invented here. No health, mood, focus, sleep, air-purification or odour-removal claim is made anywhere on this page, and no claim is made that scenting affects ratings, reviews, bookings, occupancy or revenue.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.