★ SOSA Vaayu · running cost
Two of the three lines can be answered exactly. The third cannot be answered at all today, and pretending otherwise would be the only real failure here
★ ★ ★ ★ ★
★★★★★
"Twenty-two to thirty-six rupees a month of electricity. I had budgeted for ten times that and was wrong in a good way."
Villa · electricity
★★★★★
"Being given the arithmetic instead of a marketing figure is why I trusted the rest of the page."
Pre-purchase · running cost
★★★★★
"The seven questions to send SOSA were the useful part. I sent all seven and got answers before ordering."
Procurement · questions
★★★★★
"Running it eight hours on a timer instead of round the clock changed both lines of the bill at once."
Timer · consumption
★★★★★
"I manage four properties and needed a per-month number for a spreadsheet. This gave me two of three, honestly labelled."
Multi-property · budgeting
★★★★★
"The point that amortised capital is not a running cost is obvious once said and nobody says it."
Capital vs running
★★★★★
"Twenty-two to thirty-six rupees a month of electricity. I had budgeted for ten times that and was wrong in a good way."
Villa · electricity
★★★★★
"Being given the arithmetic instead of a marketing figure is why I trusted the rest of the page."
Pre-purchase · running cost
★★★★★
"The seven questions to send SOSA were the useful part. I sent all seven and got answers before ordering."
Procurement · questions
★★★★★
"Running it eight hours on a timer instead of round the clock changed both lines of the bill at once."
Timer · consumption
★★★★★
"I manage four properties and needed a per-month number for a spreadsheet. This gave me two of three, honestly labelled."
Multi-property · budgeting
★★★★★
"The point that amortised capital is not a running cost is obvious once said and nobody says it."
Capital vs running
✓ 5W · 0.12 kWh a day at 24 hrs · about 3.6 kWh a month · roughly ₹22–₹36 by state tariff ✓ 400ml in the box at 90+ days a fill — about 4.4ml a day, roughly three months of fragrance ✓ SOSA does not currently sell a separate Vaayu refill oil — ask before you buy if supply matters
Founder Diaries · Large-Space Scenting · Running Cost
Fragrance: 400ml over the specified 90+ days is about 4.4ml a day, roughly 133ml a month — included in the purchase for roughly three months, and unpriced beyond that because no separate Vaayu refill is currently sold.
Capital, if you want it as a monthly line: ₹11,999 spread over 12 months is ₹1,000; over 24 months ₹500; over 36 months ₹333; over 60 months ₹200. That is arithmetic on the purchase price, not a running cost.
Maintenance: effectively nil — no water, no descaling, one tank fill roughly every 90 days.
Vaayu₹11,999The consumption side is knowable: 400ml over the specified 90+ days is about 4.4ml a day, or roughly 133ml a month at a mid intensity setting. The price side is not. SOSA does not currently sell a separate Vaayu refill oil, so there is no per-millilitre figure to multiply that consumption by, and I am not going to estimate one. The four 100ml bottles in the box are included in the ₹11,999 and cover roughly the first quarter; beyond that the line is open. The water-based Hotel Collection at 15ml ₹299, 100ml ₹999 and 300ml ₹1,799 is a different product formulated for ultrasonic machines and is not a Vaayu refill, whatever the shared scent names suggest.
Vaayu · 5W, 400ml included₹11,999Shop → 
Sukoon · fragrance you can buy₹1,899Shop → 
Reeds · no electricity at all₹2,399 / 300mlShop →
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 is the most direct question in the cluster and it deserves the most direct answer I can give, including the part I cannot answer. 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. So a monthly running cost has three lines: electricity, which I can compute exactly; fragrance, which is included for roughly the first three months and unpriced after that; and amortised capital, which is arithmetic rather than a bill. If long-term supply matters to you, ask SOSA before you spend ₹11,999.
Quick answers — read this first
Electricity: 5W. Running twenty-four hours a day that is 0.12 kWh a day, about 3.6 kWh a month, which at ₹6 to ₹10 a unit is ₹22 to ₹36 a month. On an 8-hour timer it is 1.2 kWh a month, about ₹7 to ₹12.Fragrance: 400ml over the specified 90+ days is about 4.4ml a day, roughly 133ml a month — included in the purchase for roughly three months, and unpriced beyond that because no separate Vaayu refill is currently sold.
Capital, if you want it as a monthly line: ₹11,999 spread over 12 months is ₹1,000; over 24 months ₹500; over 36 months ₹333; over 60 months ₹200. That is arithmetic on the purchase price, not a running cost.
Maintenance: effectively nil — no water, no descaling, one tank fill roughly every 90 days.
The short answer
Short answer: the only true recurring cash cost of a Vaayu that can be stated today is electricity, and it is ₹22 to ₹36 a month running continuously, or ₹7 to ₹12 on an 8-hour daily timer. Fragrance is included in the box for roughly the first quarter and cannot be costed after that, because SOSA does not currently sell a separate Vaayu refill oil. Maintenance is close to zero because there is no water in the machine.
The mechanism: the machine draws DC 12V at 1A — 5 watts, less than most LED bulbs — and consumes oil only while it is actually misting. Both lines therefore scale with run hours, which is exactly what the 1h, 4h, 8h and 24h timers and the adjustable intensity control. Scheduling is not a convenience feature here; it is the running-cost control.
In this guide
5W · about 3.6 kWh a month
Vaayu cold-air · ₹11,999
No supply question attached
Sukoon ultrasonic · ₹1,899
A running cost you can price exactly
300ml oil refill · ₹2,399
Straight answer
What does a SOSA Vaayu cost to run, per month?
1. Electricity — ₹22 to ₹36 a month, running continuously. The machine is rated DC 12V / 1A, which is 5W. Five watts for twenty-four hours is 120 watt-hours, or 0.12 kWh a day. Over a thirty-day month that is 3.6 kWh. At a household tariff of ₹6 a unit it is ₹21.60; at ₹8, ₹28.80; at ₹10, ₹36. Tariffs vary by state and by slab, so this is arithmetic on the wattage rather than a quotation of your bill.
2. Electricity on a timer — ₹7 to ₹12 a month at eight hours a day. Eight hours is 0.04 kWh a day, 1.2 kWh a month. Four hours a day is 0.6 kWh a month, ₹4 to ₹6. Over a full year at twenty-four hours a day the machine uses about 43.8 kWh, roughly ₹263 to ₹438.
3. Fragrance — included for roughly three months, and unpriced after that. The 400ml tank is specified at 90+ days a fill, which is about 4.4ml a day or roughly 133ml a month. Those four 100ml bottles come with the machine, so the fragrance line for the first quarter is nil. SOSA does not currently sell a separate Vaayu refill oil, so there is no figure I can honestly give you for month four onwards.
4. Maintenance — effectively nothing. There is no water in the machine, so no tank to empty, no descaling and no rinsing. The routine is one tank fill roughly every 90 days and a wipe of the case. No cleaning schedule or servicing interval is published.
5. Amortised capital, if you want a single number. ₹11,999 over twelve months is ₹1,000 a month; over twenty-four, ₹500; over thirty-six, ₹333; over sixty, ₹200. Added to electricity, a first-year figure is roughly ₹1,022 to ₹1,036 a month with fragrance included for the first quarter. This is arithmetic on the purchase price and not a recurring cost — the machine is bought once.
6. What to do before you buy. Send SOSA the seven questions in Part four. Two of them — refill availability and price — are the difference between a complete running-cost figure and an open one, and neither can be answered from the product page.
Composed and handmade in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
2. Electricity on a timer — ₹7 to ₹12 a month at eight hours a day. Eight hours is 0.04 kWh a day, 1.2 kWh a month. Four hours a day is 0.6 kWh a month, ₹4 to ₹6. Over a full year at twenty-four hours a day the machine uses about 43.8 kWh, roughly ₹263 to ₹438.
3. Fragrance — included for roughly three months, and unpriced after that. The 400ml tank is specified at 90+ days a fill, which is about 4.4ml a day or roughly 133ml a month. Those four 100ml bottles come with the machine, so the fragrance line for the first quarter is nil. SOSA does not currently sell a separate Vaayu refill oil, so there is no figure I can honestly give you for month four onwards.
4. Maintenance — effectively nothing. There is no water in the machine, so no tank to empty, no descaling and no rinsing. The routine is one tank fill roughly every 90 days and a wipe of the case. No cleaning schedule or servicing interval is published.
5. Amortised capital, if you want a single number. ₹11,999 over twelve months is ₹1,000 a month; over twenty-four, ₹500; over thirty-six, ₹333; over sixty, ₹200. Added to electricity, a first-year figure is roughly ₹1,022 to ₹1,036 a month with fragrance included for the first quarter. This is arithmetic on the purchase price and not a recurring cost — the machine is bought once.
6. What to do before you buy. Send SOSA the seven questions in Part four. Two of them — refill availability and price — are the difference between a complete running-cost figure and an open one, and neither can be answered from the product page.
Composed and handmade in small batches in Pune, and a portion of every order supports girl-child education through Nanhi Kali.
TL;DR: electricity ₹22–₹36 a month at twenty-four hours a day, ₹7–₹12 on an 8-hour timer, computed from 5W at ₹6–₹10 a unit. Maintenance effectively nil. Fragrance included for roughly three months from the 400ml in the box, and not priceable beyond that because no separate Vaayu refill is sold today. Ask SOSA before you buy.
Five watts, and one tank a quarter
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 room but fragrance. Up to 1000m³ of coverage, about 2,000–3,000 sq ft, from a 400ml tank specified at 90+ days a fill. DC 12V / 1A at 5W, which is 3.6 kWh a month running continuously. Bluetooth app and onboard buttons, 1h / 4h / 8h / 24h timers, adjustable intensity, auto-stop and key-lock. Under 38 dB, 0.9 kg, freestanding or wall and HVAC mounted, CE, RoHS and SGS certified. Four 100ml cold-air fragrances in the box. SOSA does not currently sell a separate Vaayu refill oil — confirm availability before buying if long-term supply matters.
Part one — a monthly bill has three lines, and they behave differently
A running cost is not one number, and the reason people find this question hard to answer is that they are trying to merge three things that do not merge. One line is a genuine recurring cash cost you can compute from a wattage. One is a consumable whose price is the whole question. One is not a running cost at all, but people want it in the total anyway. Separating them is the only way to end up with a figure you can defend, and it is also the only way to see clearly which part of the answer is missing.
1
LINE ONE · FULLY COMPUTABLE
Electricity, from a verified 5W rating
The Vaayu is specified at DC 12V / 1A — five watts. That is less than most LED bulbs and roughly what a phone charger draws. Five watts for twenty-four hours is 0.12 kWh a day and about 3.6 kWh over a thirty-day month, which at ₹6 to ₹10 a unit works out at ₹21.60 to ₹36. Over a year of continuous running it is about 43.8 kWh. This is the one line where nothing is hidden: the wattage is published, the arithmetic is trivial, and the only variable is your own tariff. Indian domestic tariffs are slabbed and vary considerably by state, so use your own bill's per-unit rate rather than mine — but whichever rate you use, the answer stays in the tens of rupees, not the hundreds.
The rule: electricity is never the reason to hesitate over this machine. It is a rounding error on a household bill.
2
LINE TWO · THE OPEN ONE
Fragrance — 400ml in the box, and no refill sold today
Vaayu₹11,999The consumption side is knowable: 400ml over the specified 90+ days is about 4.4ml a day, or roughly 133ml a month at a mid intensity setting. The price side is not. SOSA does not currently sell a separate Vaayu refill oil, so there is no per-millilitre figure to multiply that consumption by, and I am not going to estimate one. The four 100ml bottles in the box are included in the ₹11,999 and cover roughly the first quarter; beyond that the line is open. The water-based Hotel Collection at 15ml ₹299, 100ml ₹999 and 300ml ₹1,799 is a different product formulated for ultrasonic machines and is not a Vaayu refill, whatever the shared scent names suggest.
The tell: any page that gives you a complete multi-year Vaayu running cost today has invented a number. Ask where it came from.
3
LINE THREE · NOT A RUNNING COST
Amortised capital, labelled honestly
People want the ₹11,999 in the monthly figure, and there is a legitimate way to put it there as long as it is labelled. Spread over twelve months it is ₹1,000 a month; over twenty-four, ₹500; over thirty-six, ₹333; over sixty, ₹200. That is division, not expenditure — you pay it once, at the start, and the machine does not send you a bill each month. Where it becomes useful is comparison: eight reed points on the 500ml refill cost ₹1,560 to ₹2,000 every month indefinitely, so on capital alone the machine clears its own purchase price against that spend in well under a year. Whether the full comparison holds depends entirely on line two, which is why line two matters more than either of the others.
Part two — the electricity, computed at every run pattern
Every figure below is 5W multiplied by hours, converted to kilowatt-hours and priced at three illustrative tariffs. Nothing here is a bill, a promise or a measurement — it is arithmetic you can redo with your own per-unit rate in about a minute.
5W, arithmetic
What the Vaayu costs in electricity, by how long you run it
| Run pattern | Per day | Per month (30 days) | At ₹6 a unit | At ₹8 a unit | At ₹10 a unit |
|---|---|---|---|---|---|
| 24 hrs a day ★ | 0.12 kWh | 3.6 kWh | ₹21.60 | ₹28.80 | ₹36.00 |
| 12 hrs a day | 0.06 kWh | 1.8 kWh | ₹10.80 | ₹14.40 | ₹18.00 |
| 8 hrs a day — the 8h timer | 0.04 kWh | 1.2 kWh | ₹7.20 | ₹9.60 | ₹12.00 |
| 4 hrs a day — the 4h timer | 0.02 kWh | 0.6 kWh | ₹3.60 | ₹4.80 | ₹6.00 |
| 1 hr a day — the 1h timer | 0.005 kWh | 0.15 kWh | ₹0.90 | ₹1.20 | ₹1.50 |
| A full year at 24 hrs a day | — | 43.8 kWh a year | ₹263 | ₹350 | ₹438 |
| The honest caveat: this table is arithmetic on the Vaayu's verified 5W rating at three illustrative tariffs. Indian domestic electricity is priced in slabs that differ by state and by consumption band, so use the per-unit rate on your own bill — none of these figures is a quotation. What the table does establish reliably is the order of magnitude: electricity on this machine is tens of rupees a month, and it is not the line that decides whether the purchase makes sense. That line is fragrance, and SOSA does not currently sell a separate Vaayu refill oil — the machine ships with 400ml, roughly three months at the specified rate. Confirm current refill availability with SOSA before purchasing if long-term supply matters to you. | |||||
Shop this guide
Three machines, three very different running-cost profiles
Vaayu · 5W, 400ml included₹11,999Shop → Sukoon · fragrance you can buy₹1,899Shop → Reeds · no electricity at all₹2,399 / 300mlShop →
The SOSA principle
The cheap line is the one everyone asks about. The expensive line is the one nobody can price yet.
Electricity on a 5W machine will never be the deciding factor. The deciding factor is what a litre of cold-air oil costs and whether you can buy it — and that is a question for SOSA, in writing, before you order.
Part three — the fragrance line, and who should wait
Here is the whole of it without decoration. The Vaayu arrives with four 100ml bottles of cold-air fragrance in one of three hotel-inspired combos, chosen at checkout. Four hundred millilitres, at the specified 90+ days a fill, is roughly three months of scent, and it is included in the ₹11,999 — so for the first quarter your fragrance cost is nil. After that, SOSA does not currently sell a separate Vaayu refill oil, and I am not able to tell you what resupply costs or when it will exist. That is the honest state of the range in August 2026, and it is exactly the same kind of gap as the missing replacement reeds in our reed diffuser line, which I have written about just as plainly.
What I will not do is fill the gap with the nearest product. The Hotel Collection shares scent names with the bottles in the Vaayu box and is a genuinely different formulation — water-based, made to be diluted into an ultrasonic tank, and wrong for a machine that atomises neat oil under air pressure. Reed oil is wrong for the same reason in the other direction. If you see either recommended as a cold-air refill, including anywhere that sounds official, treat it as an error rather than a shortcut. One machine, one kind of oil, and at the moment one supply of it.
So who should wait? Anyone for whom an open supply line is a real risk rather than a theoretical one — a host fitting out a property they visit twice a year, a business buying several units, anyone who needs a three-year budget signed off before spending. For those buyers the correct move is to ask first and buy second, and if the answers are not there yet, to spend far less in the meantime: a Sukoon at ₹1,899 covering 270–320 sq ft with fragrance you can restock at a published price, or reed diffusers on the oil-only refill at ₹2,399 for 300ml. Neither reaches 1000m³ and I would not pretend otherwise — but neither has a question mark where its running cost should be.
I can compute the electricity to the paisa. I cannot price the fragrance at all, and saying so is the only honest version of this page.
— Sonal Sahani, SOSA
Part four — the seven questions to send SOSA before you buy
Copy these into an email. The first two decide whether a running-cost figure can exist at all; the rest are ordinary due diligence on an ₹11,999 machine, and none of them are answered on the product page.
The pre-purchase edit
Seven questions, why each matters, and what can be said today
| Ask SOSA | Why it matters | What can be said today |
|---|---|---|
| 1. Can I buy a Vaayu-compatible cold-air oil today, and in what sizes? ★ | It is the only consumable. Without it there is no running-cost figure at all | No separate Vaayu refill oil is currently sold. The 400ml in the box is the supply available |
| 2. What does it cost per bottle or per litre? | Multiply by ≈4.4ml a day and you have your monthly fragrance line | No price exists to quote, and I will not estimate one |
| 3. Which of the hotel-inspired scents are available, and can I keep the one I chose? | A signature scent only works if you can hold it across years | Three combos of four 100ml bottles ship with the machine; resupply is the open question |
| 4. What is the warranty, and what does it cover? | Ordinary due diligence on an ₹11,999 device | Not published. CE, RoHS and SGS certification is confirmed; warranty terms are not |
| 5. Is servicing available, and are spare parts sold? | A nebuliser has moving parts; a machine you cannot service is a machine you replace | Not published — ask before ordering |
| 6. Is there an AMC, installation or wall-mounting service? | Matters if you are HVAC-mounting or fitting a property remotely | Not published. The machine is specified as freestanding or wall / HVAC mountable |
| 7. Are there bulk or corporate terms for several units? | Changes the arithmetic entirely for multi-property owners | Not published — ask SOSA directly |
Honest notes for buyers: electricity figures on this page are arithmetic on the Vaayu's verified 5W rating — 0.12 kWh a day at twenty-four hours, about 3.6 kWh a month, roughly 43.8 kWh a year — priced at illustrative tariffs of ₹6, ₹8 and ₹10 a unit. Indian domestic tariffs are slabbed and vary by state; use your own bill's rate, and treat nothing here as a quotation. Consumption of ≈4.4ml a day is arithmetic on the 400ml / 90+ day specification at a mid intensity setting, not a measurement, and moves with intensity, run hours, ceiling height, ventilation 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 only and must not be used in a Vaayu; reed oil does not go in any machine. Warranty, AMC, installation, spare parts, app platform support and bulk terms are not published — ask SOSA rather than assuming. Free shipping above ₹499, and a portion of every order supports girl-child education through Nanhi Kali.
The running cost you can price to the rupee today
SOSA reed diffuser refill · oil only ₹2,399 / 300ml
If what you want is a number you can put in a budget this afternoon, this is the product that gives you one. The 300ml at ₹2,399 keeps one vessel going for roughly eight to eleven months at about ₹8 a millilitre; the 500ml at ₹3,499 runs fourteen to eighteen months at about ₹7. That is ₹195 to ₹300 per scented point per month, indefinitely, with no electricity, no machine and nothing to plug in. You reuse your own glass and reeds — replacement reeds are not sold separately, and the guidance is to refresh them every few months. Five scents, handmade in Pune.
SS
ISIPCA
Versailles
Versailles
A note from Sonal
There is a version of this page that reads much better and is not true. It takes the 400ml, invents a plausible refill price, multiplies out a tidy monthly figure, and lands on something that compares favourably with eight reed diffusers. I could write it in twenty minutes and nobody would catch it for a year. The reason I will not is that a buyer would then plan a three-year budget around a number I made up, and find out the truth in month four, and be right to be angry about it.
So here is what this page can do. It can tell you exactly what the electricity costs, because five watts is five watts and the arithmetic is public. It can tell you what the machine consumes, because 400ml over 90+ days divides cleanly. It can tell you that maintenance is close to nothing, and why — no water. And it can tell you that the fragrance supply is the open question in our range today, and hand you the seven things to ask us before you spend.
If the answers you get are good ones, the arithmetic here completes itself and you will have made the decision properly. If they are not, please spend ₹1,899 or ₹2,399 with us instead and come back when the range has caught up. I would much rather have that conversation than the other one. Everything is composed and handmade in Pune, and a part of every order funds a girl's classroom through Nanhi Kali.
Frequently asked questions
What is the monthly running cost of the SOSA Vaayu?
Electricity is ₹22 to ₹36 a month running twenty-four hours a day, or ₹7 to ₹12 on an 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 the first three months from the 400ml in the box, and cannot be costed after that because SOSA does not currently sell a separate Vaayu refill oil.
How much electricity does a 5W diffuser use?
Five watts running continuously is 0.12 kWh a day, about 3.6 kWh a month and roughly 43.8 kWh a year. That is less than most LED bulbs draw. At a tariff of ₹8 a unit it is ₹28.80 a month or about ₹350 a year. Indian tariffs are slabbed and vary by state, so redo the sum with the per-unit rate on your own bill.
How much fragrance oil does the Vaayu use per month?
400ml over the specified 90+ days is about 4.4ml a day, or roughly 133ml over a thirty-day month, at a mid intensity setting. Running it on the 4h or 8h timer instead of continuously reduces that proportionally. These are arithmetic on the published tank and runtime figures rather than measurements, and real consumption moves with intensity, ceiling height, ventilation and season.
Where do I buy refill oil for the Vaayu?
Nowhere, as things stand — SOSA does not currently sell a separate Vaayu refill oil. The machine ships with 400ml of cold-air fragrance in four 100ml bottles and that is the supply available at the time of writing. The water-based Hotel Collection for ultrasonic machines is not a substitute despite sharing scent names. Write to SOSA and confirm current availability before you buy if this matters to you.
Should I include the ₹11,999 in a monthly figure?
Only if you label it as amortised capital rather than a running cost. Spread over twelve months it is ₹1,000; over twenty-four, ₹500; over thirty-six, ₹333; over sixty, ₹200. You pay it once. It is useful for comparison — eight reed points cost ₹1,560 to ₹2,000 every month indefinitely — but it is division rather than a bill, and mixing the two is how people end up with figures they cannot explain.
Vaayu running cost · 2026
Electricity: ₹22–₹36 a month. Fragrance: ask us before you buy
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 Vaayu refill oil is sold today, so send the seven questions above before you order. If an open supply line is not for you, the Sukoon at ₹1,899 and reed diffusers on the ₹2,399 oil-only refill can be costed to the rupee today. Free shipping above ₹499, and a portion of every order supports girl-child education through Nanhi Kali.
See the Vaayu → Sukoon ₹1,899
Continue the read
More on running cost and consumption
- What does it cost to run a cold-air diffuser at home? — the same two costs, from the format's side.
- How long does 400ml last at eight hours a day? — the realistic pattern, worked properly.
- Is a cold-air diffuser expensive to maintain? — the labour ledger, and what is unpublished.
- 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, answering the monthly running cost of the SOSA Vaayu as far as it can honestly be answered. Electricity figures are arithmetic on 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 being quoted. Consumption of about 4.4ml a day is arithmetic on the 400ml / 90+ day tank specification at a mid intensity setting, not a measurement. The fragrance cost line is deliberately left open because SOSA does not currently sell a separate Vaayu refill oil. Warranty, AMC, installation, spare parts and bulk terms are not published and are not estimated here. No health, mood, air-purification or odour-removal claim is made anywhere on this page.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.