Music: Tranquility Base by Kevin MacLeod (CC BY 4.0).

A whole-home air purifier installed on a wall — branded white body, silver duct curving away, sunlight on terracotta floor
A whole-home air purifier installed on a wall — branded white body, silver duct curving away, sunlight on terracotta floor

The whole-home air purifier.

One unit. The whole house. Every season. PM2.5 under 15 µg/m³ continuously. CO₂ continuously flushed under 1,000 ppm. The air purifier built for Indian conditions, not adapted from somewhere cleaner.

Start with what you already do for water

Indian households have been treating their drinking water for generations — boiled water, the ceramic candle filter at your grandmother’s house, an Aquaguard on the wall, a Pureit by the sink, an RO under the counter, an inline filter snapped onto the tap. Whatever the method, no one in your family drinks straight from the tap. Nobody worries that having clean water at home will leave the family unable to handle tap water elsewhere. The principle is simple: if a contaminant harms the body, less of it is better. You filter the input you control.

Air is the same input, two tiers behind. You drink 2 litres of water a day. You breathe 11,000 litres of air a day. The category called “air purifier” has been built around the wrong unit of analysis for India — a single small room, isolated from the rest of the house, recirculating air that’s already inside.

That worked for the climates where the category was invented — homes built tight, outdoor air mostly clean, indoor pollution mostly from cooking or pets. None of those conditions describe an Indian home in October, or August, or April. The category needs to be rebuilt for Indian conditions.

That’s what aqi0 is. Technically, it’s a positive-pressure fresh air system — a single unit that pulls outdoor air through a clinical-grade H13 HEPA filter, pressurises the entire home, and displaces stale indoor air through gaps and exhausts. Practically, it’s the air purifier the whole house needs, designed for a country where outdoor air is the problem most of the year.

Room purifier vs whole-home air purifier

Single-room recirculating purifier aqi0 — the whole-home air purifier
Coverage One room, doors closed Whole home, up to 2,000 sq ft
Mechanism Recirculates indoor air Brings filtered outdoor air in continuously
Reduces PM2.5? Within the room, partially Across the home, to under 15 µg/m³
Reduces CO₂? No — physically cannot Yes — continuously flushed under 1,000 ppm
Performance in winter peak (outdoor 250+ µg/m³) Indoor stays 60-120 µg/m³ in most setups Indoor stays under 15 µg/m³ regardless
Per-room hardware One unit per room One unit for the whole home
Filter cost per year ₹8,000-₹15,000 × number of rooms ₹12,500 AMC + GST, all rooms covered
Door-state dependence Requires doors closed Doors stay open; whole home is one zone

The two products are not the same category. A room HEPA tower is a useful tool for a single sealed bedroom under moderate outdoor conditions. A whole-home air purifier is what an entire Indian home actually needs.

Why room purifiers can’t deliver this in Indian homes

The physics is fixed by the equation indoor air engineers use to predict steady-state concentration:

C_indoor / C_outdoor = infiltration / (infiltration + CADR)

The infiltration term is how leakily the outdoor air enters through gaps, kitchen exhausts, door-opens and window seals. In US homes, this factor sits around 0.26. In typical Indian construction it sits closer to 0.71 — nearly three times higher. Outdoor air finds its way in.

What this means in practice: a recirculating room purifier with a high CADR can win against indoor air at a fixed level. It cannot keep up when the outdoor air feeding the leaks is sitting at 250-400 µg/m³ for months at a time. Independent Delhi field testing of premium room units measured an average 49% reduction during peak season; one brand’s own field study showed indoor PM2.5 rising 459% during the worst weeks because outdoor concentration was so high the filtration couldn’t keep up.

The whole-home approach inverts the equation. Pull outdoor air through H13 HEPA before it enters the home. Pressurise the interior (~10-25 Pa above outdoors) so air leaks out through gaps, not in. The infiltration term goes to zero. Indoor concentration stops following outdoor concentration. The full technical breakdown is in our purifier-physics explainer — the argument is universal mass-balance, not a winter-specific claim.

A separate disqualifier: no filter, no HEPA grade, no carbon stage removes CO₂. A closed bedroom with two adults sleeping reaches 1,500-2,500 ppm CO₂ by morning regardless of how good the purifier in the corner is. Cognitive performance drops measurably above 1,000 ppm; sleep quality degrades. The whole-home approach handles CO₂ because it’s pulling fresh outdoor air in, not recirculating the same indoor air all night.

The aqi0 promise

The brand name is a claim. aqi0 is shorthand for AQI of zero indoors — or as close as is physically achievable while sitting inside an Indian airshed.

What aqi0 holds, year-round, in every room:

This is not a marketing target. It’s what the engineering delivers, measured indoors at every install, before we leave the house.

Not a Delhi-only problem, not a winter-only problem

The conversation usually opens with Delhi October-November smog. That’s where the public discourse lives. It’s also where the smallest part of the problem lives.

PM2.5 in Delhi NCR stays above the WHO 15 µg/m³ guideline for 9-10 months of the year. Even monsoon — the cleanest stretch — sits at roughly 3× WHO. The 11.9-year life-expectancy hit measured by AQLI is a year-round average. Winter is not the problem; winter is when the problem becomes loud enough to ignore.

It’s also not a Delhi-only problem. The Indo-Gangetic Plain — Ghaziabad, Lucknow, Patna, Kanpur, Varanasi, Agra, Jaipur — sits at Delhi-level or worse, year-round. Eastern India (Kolkata) hits Delhi-NCR-winter levels seasonally. Even cities long considered “clean” — Mumbai, Pune, Ahmedabad, Bengaluru, Chennai — measure above WHO levels routinely. A 2024 Lancet Planetary Health study (Krishna et al.) attributed 7.2% of daily deaths across ten Indian cities to PM2.5 above WHO guidelines. That’s not a Delhi statistic.

A whole-home air purifier is not winter equipment. It runs every day of the year.

“Less is better. Period.”

The most common reason people delay installing isn’t price. It’s an objection that sounds something like: “if my body is used to this air, won’t clean air at home make me soft?”

The body does not adapt to PM2.5 the way it adapts to viruses, altitude, or weight training. Particulate exposure has no tolerable dose at which beneficial adaptation kicks in. The body’s clearance machinery saturates under load — the alveolar macrophages slow down, then stop, then accumulate. There is no “training dose” of fine particulates that builds resilience.

This is the same logic the rest of life already follows. Less sugar is better than more. Less alcohol is better than more. Less tobacco, less screen time, less ultra-processed food, less chronic stress — universal axiom. PM2.5 is the same category of harm and has somehow been mis-classified as something the body negotiates with rather than just absorbs.

When ambient pollution drops — Beijing 2008 Olympics, Atlanta 1996 Olympics, Dublin’s 1990 coal ban — inflammatory and cardiovascular biomarkers improve in days. When indoor PM2.5 drops via HEPA filtration in randomised trials (Allen 2011, Bräuner 2008, Chen 2015, Karottki 2013, plus eight others across four continents), the same markers improve within 48-72 hours. When children move from polluted to cleaner communities, their lung-function growth accelerates (Avol 2001, Gauderman NEJM 2004 + 2015).

Clean indoor air is recovery, not weakness. Your body doesn’t lose tolerance because there is no tolerance to lose. Your children develop better lungs in cleaner air, not worse. Air is the next utility. Water already is. Less of a harmful thing is always better.

The full evidence breakdown is in the body-adapt blog and its technical companion.

What’s under the hood

Technical specs live on the full product page. The summary:

We’ve installed across real Indian homes in Gurugram and South Delhi NCR — see Gurugram society pages and customer stories for representative installs across society types.

Pricing

Item All-in (incl. 18% GST)
Whole-home air purifier (installed) ₹82,600
Annual AMC (6+ filter changes + cleaning) ₹14,750
aqi0 AQI monitor (₹6,000) Included free when AMC signed on the same invoice as the system

Same pricing across Delhi NCR. Installation, ducting, electrical, louvre and the first filter change are included. AMC same price whether signed at install or later — the only difference is whether the monitor is included.

Browse the full pricing breakdown →

Frequently asked questions about whole-home air purifiers

What’s the difference between a whole-home air purifier and a regular air purifier?

A regular air purifier — the kind that sits in a corner — recirculates the air in one room. It can lower PM2.5 in that room while the door is closed. A whole-home air purifier brings filtered outdoor air into the home continuously, pressurising it so polluted air leaks out instead of in. One unit treats the entire 2,000 sq ft house, doors open or closed. It also handles CO₂ — which no room purifier can.

Is one unit really enough for a 3-BHK or 4-BHK home?

For most 2-4 BHK homes up to about 2,000 sq ft, yes. We measure airflow against actual home volume at the site survey and confirm. For homes over 2,500 sq ft or with significantly partitioned floor plans, we plan two units in series. Pricing scales accordingly.

How loud is it inside the house?

Quieter than a typical ceiling fan on speed 2. Residents stop noticing it within the first week. It runs in the background like a refrigerator does.

What does the monthly electricity cost look like?

Roughly ₹170/month at ₹8/unit, running 24/7 at standard operating voltage. Peak-AQI mode (used for ~2-3 months of winter smog) bumps that slightly. For comparison, a typical 1.5-ton air conditioner running 6 hours a day costs 4-6× more.

Do we need to keep windows closed?

For best performance, yes — the system pressurises the home and a wide-open window defeats the pressure differential. But there’s no requirement to seal the home obsessively. Normal door-opens, balcony access, and brief window-opens for cooking exhaust don’t materially affect indoor PM2.5 because the unit is continuously flushing.

What’s the filter replacement cadence?

H13 HEPA changes every 60-90 days (more frequently during October-February peak). Six changes per year is the standard AMC schedule — more if winter is severe. The pre-filter is washable and cleaned at home every 7-10 days; that step extends HEPA life and keeps the system efficient.

How is this better than the air purifier I already own?

Your existing purifier likely works in the room it’s in, with the door closed, when outdoor air is moderate. It can stay where it is — many customers keep theirs in a guest room or office after the whole-home system installs. The whole-home unit handles what a room purifier can’t: PM2.5 across the entire house, CO₂ accumulation overnight, performance during the worst weeks of the year.

What’s the warranty?

One year on the fan and electrical components, full coverage. H13 HEPA filters are consumables and covered by AMC. AQI monitor: one year on hardware. Installation workmanship: as long as we serve the city you’re in.

When is the right time to install?

Any time. The system runs year-round, so an October install gives you the full winter benefit immediately, and a May install gives you the full summer benefit (lower PM2.5 outdoors but higher indoor CO₂ during AC season). The system matters every day.

How long does the install take?

Typically one site visit — survey, glass-cut coordination if needed, ducting, electrical, unit mounting, louvre placement, monitor pairing, post-install AQI verification. Most installs complete in a single day. Toughened-glass cutting is the one external dependency; we coordinate it with a Manesar partner.

Talk to us

The site survey is free. We measure indoor PM2.5 and CO₂ before we propose anything, so the install plan matches what your home actually shows.

Call +91 96676 72740 or WhatsApp wa.me/919667672740.