AIRTH Knowledge Base

Company facts

Topics: company facts, about AIRTH, story, clients, Shark Tank, celebrities, awards, customers, USP, benefits, FILTRIX, validation

About AIRTH

• Full name: Airth Research Pvt Ltd.
• AIRTH does not sell standalone air purifiers. It makes retrofit air purifiers that upgrade existing ACs, plus Forest Neo, a fresh-air machine.
• AIRTH is revolutionising how the world breathes. Its AC filtration technology transforms the health of your family and the life of your AC, making clean air accessible, affordable and effortless.
• Technology developed with IIT Bombay and IISc Bangalore, and tested at IIT Delhi and IIT Kanpur.
• Trusted by 1 lakh+ customers across India.
• As seen on Shark Tank India. Sharks Aman Gupta, Vineeta Singh and Anupam Mittal appreciated the product.
• Green Award 2025 from the Office of the Principal Scientific Adviser, Government of India.
• Brand ambassador: Rahul Dev.
• AIRTH owners include Rahul Dev, Rajiv Makhni, Mugdha Godse, Eijaz Khan and Neeraj Kalra.
• Office: 907, 10th Floor, Westend Mall, Janakpuri, New Delhi.
• Phone: 8700529995. Sales: hello@airth.in. Support: support@airth.in.

Notable clients

Taj Palace New Delhi, DLF Camellias and Magnolias, Tata group brands (Titan EyePlus, Tanishq), IOCL, Cult Fit, Dell Bangalore, IIT Kanpur, Vegas Mall Dwarka, India Post Payments Bank, The Beacon School and other top Delhi schools.

Who AIRTH serves

Homes, schools, gyms, offices and hotels.

The AIRTH clean air ecosystem

• Control: AIRTH filters on every AC and HVAC unit, plus Forest Neo fresh air machines.
• Monitor: Wi-Fi smart air quality monitors, with API access to show readings on a screen.
• Manage: AIRTH’s on-ground team that installs, services and responds.

The story (use for a story-based pitch)

We are an indoor species, around ACs for up to 20 hours a day, breathing about 25,000 times daily. Over a lifetime that is about 18 crore breaths of AC air. ACs cool you, but their mesh filters only trap visible dust. PM2.5, bacteria, viruses and allergens pass straight through and keep recirculating. AIRTH makes sure they land on our filters, not in your lungs.

FILTRIX technology

• FILTRIX is AIRTH’s patent-filed AC filtration technology. Write it as FILTRIX (trademark), never as a registered or patented technology.
• It uses the AC’s own recirculation to deliver high-efficiency air purification through specially engineered filters, without compromising cooling.
• Smart partial-coverage design with 3D filtration: covers about 50% of the AC inlet, lowers airflow by about 10%, and about 30% of the air passes through the filter. That is enough for strong clean-air delivery while cooling stays intact.
• With continuous use FILTRIX also extends the AC’s life, because less dust reaches the cooling coil.
• Features: high dust-holding capacity, lower pressure drop, longer filter life, and a green antimicrobial coating developed at IIT Kanpur (inspired by green-tea polyphenols) that ruptures microbes.

Why turn your AC into an air purifier

• An air purifier is a fan plus a filter. An AC is a fan plus a filter plus a cooling coil, but its mesh filter is useless against fine particles.
• An AC moves about 3 times the air of an air purifier. Air purifiers run at 100 to 300 m3/hr; a split AC runs at 700 to 1,000 m3/hr. Passing even 30% of AC air through AIRTH gives about 210 m3/hr of clean air, comparable to a standalone purifier, built into the AC you already use.
• The AC’s built-in mesh filter is the real reason AC performance drops and needs frequent cleaning. After about 8 months of use, an AC with AIRTH shows a smaller airflow drop than one with only the mesh filter.

Third-party validation

1. IIT Delhi: PM2.5 reduced by 90%.
2. IIT Kanpur: sub-micron particles reduced by 90%.
3. IIT Bombay: CADR about 250 m3/hr, comparable to expensive air purifiers; 5x better air purification than ACs with built-in air purifiers.
4. BEE-accredited lab: cooling performance 95.8% intact; power use about 12% lower with a 3-month-old filter; ISEER above 91%; power factor above 0.90; no damage or overloading.
5. NABL-accredited lab: deactivates SARS-CoV-2 by 99% in 24 hours.
6. TUV Rheinland: deactivates bacteria by 99%.

USPs

Smart 3D filtration, better cooling efficiency, partial-coverage design.

One-line benefits (pick what fits the customer)

• Your family breathes 1,500 fewer cigarettes with one AIRTH AC purifier.
• All-season clean air: summer, winter and monsoon.
• The power of an expensive air purifier, built into your AC.
• Join 1 lakh+ customers using technology from IIT Bombay.
• 5x better air purification than ACs with built-in air purifiers.
• Stops about 4 tablespoons of dust from reaching your lungs over 8 to 12 months.
• 75% lower cost than conventional air purifiers.
• Clean air. Better health. Longer AC life.

Core features of AIRTH AC purifiers

• Blocks PM2.5, PM10, dust and fine particles; the antimicrobial coating fights germs, bacteria and viruses.
• Up to 10x more effective than standard AC mesh filters.
• Improves AC efficiency, reduces energy use and protects the cooling coil.
• About 5-minute DIY installation, no tools or technician needed; fits all AC brands (some newer curved ACs need a quick check with a photo and model number).
• Works in cool, dry and fan modes (the Winter version is used in fan mode).
• HEPA H10 filtration, low pressure drop, sturdy metal frame (the Split AC version has a lifetime warranty on the frame).
• No electricity or power connection needed.
• HEPA filter lasts 8 to 12 months; replacement is affordable.

AC types AIRTH works with

Split, Window, Cassette, FCU (fan coil unit) and AHU (air handling unit). For split, window, cassette and FCU, AIRTH created the AC air purifier category. For AHUs, AIRTH supplies low-pressure-drop replacement filters.

“I already have an air purifier. Why AIRTH?”

• People forget to switch on standalone purifiers; most stop using them within 3 months. Everyone uses their AC out of habit, so AIRTH gives clean air automatically whenever the AC runs.
• A standalone purifier’s filter can become a germ breeding ground with continuous use. AIRTH’s coating kills germs.
• Even with a purifier, AIRTH works as a booster during the worst pollution months. Many North Indian homes reach healthy air only by using both.

Products

Topics: product, standalone air purifier, room air purifier, HEPA air purifier, split summer, split winter, window, cassette, FCU, AHU, Forest Neo, fresh air machine, ventilation, CO2, core cutting, wooden cutting, glass cutting, air quality monitor, installation, maintenance, dimensions

Product lineup

Products you answer fully yourself:

1. Air Purifier for Split AC - Summer
2. Air Purifier for Split AC - Winter
3. Air Purifier for Window AC
4. Air Purifier for Cassette AC
5. HEPA Replacement Filter
6. Smart Air Quality Monitor
7. Advanced Air Quality Monitor
8. Forest Neo (Fresh Air Machine)

Commercial products (explain, share the link, then hand over to B2B / Projects):

9. Air Purifier for FCU
10. AHU Filters
11. Large commercial fresh-air systems

The Cooler air purifier is no longer sold.

When someone asks for an air purifier

If a customer asks for an air purifier, standalone air purifier, room air purifier or HEPA air purifier:

• Say clearly that AIRTH does not sell a standalone air purifier. AIRTH makes retrofit AC air purifiers that upgrade the AC they already have into an air purification system. It uses the AC’s own airflow, so no separate appliance is needed.
• Ask whether they have a Split, Window or Cassette AC, and recommend the matching product.
• If they need fresh outdoor air, ventilation, or have stale air or CO2 build-up, also introduce Forest Neo.
• Keep the two clearly apart:
  • AC air purifier: filters the air already circulating inside the room.
  • Forest Neo: brings filtered outdoor air indoors, helping reduce stale air and CO2 build-up.
• Never describe Forest Neo as a standalone air purifier that recirculates room air.

Air Purifier for Split AC

Sits on top of your existing split AC’s air inlet and turns it into an air purifier. No separate device and no extra power. Side prongs lock it in place. Works with all AC brands; some newer curved ACs need a quick check with a photo and model number. Needs at least 8 cm of free space between the top of the AC and the ceiling. Lifetime warranty on the frame; the HEPA filter is a consumable with no warranty.

Which version to recommend:

• Ask the customer’s city or their local AQI before recommending.
• North India in winter, or AQI 200 or above: recommend the Winter version.
• Anywhere else, or AQI below 200: recommend the Summer version.
• If they ask the price before sharing their location, give both prices, then ask their city to recommend the right one.

Summer version

• For customers outside North India, or wherever the AQI is below 200. Also for North India outside winter.
• One coated HEPA filter in the middle with airflow boosters (mesh) on the sides. Gives clean air while the AC keeps cooling.
• Slight pressure drop reduces AC airflow by about 10%.
• Size: 52 x 20 x 5 cm.
• Buy: airth.in/products/air-purifier-for-split-ac-summer

Winter version

• Works best for North India in winter, and anywhere the AQI is 200 or above.
• Two coated HEPA filters (dual HEPA filtration) covering the full inlet.
• Use with the AC in FAN mode only. In fan mode the AC uses about 40W, roughly the same as a ceiling fan. Never describe the Winter version as cooling, and never advise cool mode with it.
• Size: 81 x 22.5 x 5.5 cm.
• Buy: airth.in/products/air-purifier-for-split-ac

How it works: the AC recirculates room air 10 to 20 times an hour, so the filter cleans the room continuously. It removes about 4 tablespoons of dust over 8 to 12 months.

Installation: DIY, about 5 minutes. First check there are at least 8 cm between the top of the AC and the ceiling. Unbox, place it on the AC’s top air inlet, lock or secure it, and switch on the AC as usual. For the Winter version, set the AC to fan mode. Winter installation video: youtu.be/mdpMB5JjKyk

Maintenance: vacuum the HEPA filter every 4 to 6 months, replace it every 8 to 12 months, and wash the mesh airflow boosters and the AC mesh every 2 to 3 months. Never wash the HEPA filter; moisture damages it.

Buy:

• Summer: airth.in/products/air-purifier-for-split-ac-summer
• Winter: airth.in/products/air-purifier-for-split-ac

Air Purifier for Window AC

• Turns a standard window AC into an air purification system. Technology from IIT Kanpur and IISc Bangalore.
• HEPA H10 filter with green antimicrobial coating that neutralises germs, viruses and bacteria. Helps with allergies and breathing. No extra electricity; uses the AC’s airflow.
• Size: 40 x 20 x 1.1 cm (box 42 x 21 x 3.5 cm). Same filter area as the split version, thinner because the filter sits inside.
• How it works: the AC pushes room air through the purifier several times an hour; the HEPA traps fine dust and allergens and the coating deactivates microbes.
• Installation: clean the AC’s intake grill, place the purifier on top of the AC, secure it with the adhesive strips, and switch on cool or fan mode.
• Maintenance: clean the AC mesh every 2 to 4 weeks, vacuum the HEPA every 4 to 6 months, replace it every 8 to 12 months. Never wash the HEPA.
• Videos: installation youtu.be/z1j78zhfwJo, maintenance youtu.be/w5AXf-7GpDw
• Buy: airth.in/products/window-ac-air-purifier
• Sold to consumers only. It is not a channel partner product.

Air Purifier for Cassette AC

• Clips onto the cassette AC’s air-intake panel; no modification needed. Technology from IIT Kanpur and IISc Bangalore.
• HEPA H10 filter with green antimicrobial coating; uses the AC’s airflow, no extra power.
• Size: 40 x 20 x 1.1 cm (box 42 x 21 x 3.5 cm). Same filter area as the split version, thinner because it sits inside the panel.
• Installation: switch off the AC, clean the intake, clip the purifier onto the intake panel, switch on. About 5 minutes.
• Maintenance: clean the AC mesh every 2 to 4 weeks, vacuum the HEPA every 4 to 6 months, replace it every 8 to 12 months. Never wash the HEPA.
• Buy: airth.in/products/cassette-ac-air-purifier/

HEPA Replacement Filter

• Replace the HEPA filter every 8 to 12 months. Summer uses one filter (single); Winter uses two (double).
• Buy: Summer (single) airth.in/products/hepa-filter-replacement/, Winter (double) airth.in/products/hepa-filter-replacement-for-winter

Forest Neo (Fresh Air Machine)

Forest Neo is a compact fresh-air machine that supplies filtered outdoor air into indoor spaces. It is installed outside the room and sends filtered air indoors through a duct opening.

AC purifiers and HEPA filters cannot remove CO2; only fresh air can. Introduce Forest Neo when a customer mentions stale air, stuffiness, CO2, ventilation or wanting fresh outdoor air, without forcing it.

Key features:

• Fresh airflow: 170 m3/h
• Filtration: 1 carbon filter plus 3 HEPA filters, using FILTRIX 3D filtration
• Targets: PM2.5, dust, pollen, fine particles, odours and gaseous pollutants
• CO2: helps reduce indoor CO2 build-up by continuously bringing in outdoor air
• Power: up to 55W
• Noise: 50 dB or less
• Fan controls: 5 fan speeds plus Auto mode
• Filter life: about 8 to 12 months under typical conditions
• Warranty: lifetime warranty on the metal body; the rest of the product has no warranty
• Best for: bedrooms, living rooms, studies and offices
• EMI: available through Snapmint. Mention it when the customer asks about price, affordability or payment options.
• Buy: airth.in/products/forest-neo

Air quality can start improving in as little as five minutes, depending on room size, outdoor pollution, number of people and fan speed. Never guarantee this timeframe.

How Forest Neo works:

1. It draws outdoor air in through its intake.
2. The air passes through one carbon filter and three HEPA filters.
3. The filters capture particles and help reduce odours.
4. Filtered outdoor air enters the room through a duct and diffuser.
5. The continuous fresh-air supply helps reduce stale air and indoor CO2 build-up.

Common Forest Neo questions:

• “I have windows.” Open windows let in unfiltered, polluted air. Forest Neo brings in fresh air that has passed through 1 carbon and 3 HEPA filters.
• “How is it different from an air purifier?” An air purifier only cleans the air already in the room and can’t reduce CO2. Forest Neo brings in filtered fresh outdoor air, which helps reduce stale air and CO2.
• “Outdoor air in Delhi is toxic too.” The carbon and HEPA filters clean the outdoor air before it enters the room.
• “Will my bill go up?” It uses up to 55W.
• “Is it noisy?” 50 dB or less.

Forest Neo installation: cutting options

Forest Neo needs an opening for the filtered outdoor air to enter the room. There are three possible approaches, depending on how the home is built and what is feasible on site:

• Option A, core cutting: an opening is made through a concrete wall by core cutting, then the duct and diffuser are fitted.
• Option B, wooden cutting: an opening is made in a suitable wooden panel or section, then the duct and diffuser are fitted.
• Option C, glass cutting: an opening is arranged through a suitable glass section for the duct and diffuser. The installation team must check feasibility. Tempered or toughened glass cannot be assumed safe to cut, and the glass panel may need to be replaced with a pre-cut panel.

Installation rules:

• When asked about installation, explain all three options.
• Ask whether the planned spot is a concrete wall, a wooden panel or a glass section.
• Explain that the final method depends on what is feasible at their property.
• Never finalise a cutting method without the customer’s approval and the installation team’s check.
• Never promise that cutting or drilling is possible at every property.
• Never quote installation or cutting charges or an installation timeline; they are not in the approved information.
• When the customer is happy with the approach and wants to go ahead, collect their name, city, address or area, the surface type (concrete, wood or glass) and photos of the spot if possible, then hand over to Retail Sales for a site check and confirmation.

Air Purifier for FCU (fan coil unit)

Commercial product. Explain it, share the link, then hand over to B2B / Projects for sizing and a quote.

• For FCU systems, typically 3 to 7 tons.
• FCUs can only be reached from below, so AIRTH screws a base plate (6 cm x 40 cm, 2 mm thick) along the inlet: half fixed to the base, 3 cm hanging out to hold the AIRTH filter (40 x 20 cm, 2.1 cm thick). The filter has magnetic tape on two edges so it can be oriented on site.
• Always placed in the middle of the inlet, where most air flows.
• Example: an inlet 50 cm deep x 150 cm long takes 2 base plates in the middle and 4 coated HEPA filters, covering the central 80 cm.
• Installation: about 20 minutes per FCU.
• To size an FCU job, ask for the inlet dimensions.
• Price: available on demand; the team shares a quote.
• Enquire: airth.in/products/air-purifier-for-fcu

AHU Filters (air handling units)

Commercial product. Explain it, share the link, then hand over to B2B / Projects for a site assessment and quote.

• Clean air through AHUs without changing the blower. Conventional high-efficiency filters raise pressure drop so much that a new blower is needed. AIRTH filters have much lower pressure drop, higher dust-holding capacity and longer life, so the existing blower works.
• Fitted at the AHU inlet; fits any AHU. Antimicrobial HEPA purifies air and destroys germs.
• Improves cooling efficiency (less dust on the coil). Electricity rises by at most about 1%, and with continuous use electricity and maintenance costs can drop.
• Unlike other AC types, where AIRTH sits on top of existing filters, for AHUs AIRTH replaces the filters with a new frame.
• Installed by the customer’s technicians or AIRTH partners; about 1 day per AHU.
• Filters are custom-made; about 15 days to prepare.
• Developed with IIT Kanpur and IISc Bangalore, made in India.
• Price: available on demand; the team shares a quote.
• Enquire: airth.in/products/ahu-filters
• Answer AHU questions fully when asked, but don’t push AHU.

Large commercial fresh-air systems

For halls, large offices, schools, gyms, hotels and other big spaces that need more fresh air than a Forest Neo provides. These are custom solutions sized to the site. Don’t quote prices or specs; collect the space type, area and city, and hand over to B2B / Projects for a site assessment.

Smart Air Quality Monitor

• Tracks PM2.5 in real time, 24/7. Keep it plugged in and connect it to the AIRTH Care app (Android: play.google.com/store/apps/details?id=com.airth.consumer, iPhone: apps.apple.com/in/app/airth-care/id6798278377).
• Compact with an easy-to-read display.
• Warranty: 3 months.
• Buy: airth.in/products/smart-air-quality-monitor

Advanced Air Quality Monitor

• Measures PM2.5, PM10, TVOC, CO2 and HCHO (formaldehyde), with the AIRTH Care app. A dashboard version is available; connect with AIRTH for it.
• Wi-Fi, with API access so readings can be shown on a screen (useful for offices, schools, gyms and hotels).
• Warranty: 3 months.
• Price: available on demand; hand over to B2B / Projects for a quote.
• Details: airth.in/products/advanced-air-quality-monitor

Choosing a monitor:

• Only PM2.5 with the app: Smart Air Quality Monitor.
• PM2.5, PM10, TVOC, HCHO and CO2 with the app: Advanced Air Quality Monitor.
• Same with a dashboard: Advanced Air Quality Monitor with dashboard (connect with AIRTH).

Monitor troubleshooting:

1. Switch it off for 1 to 2 hours, switch it on and check whether values change.
2. Charge it for 1 to 2 hours. If a red icon shows at the top right, the unit may need replacing; hand over to Support.
3. Light an incense stick near it. If the readings change, the monitor is working.

Prices

Topics: price, cost, how much, price list, current price, MRP, on demand, quote.

Current prices

Current AIRTH consumer prices in Indian Rupees, including GST, updated automatically from the AIRTH store.

Priced on demand

Pricing rules

Topics: consumer pricing, price, cost, how much, price list, on demand, quote, website discount, free shipping, EMI

Where prices come from

Prices change often. The current prices are in the “Current prices” list above, which updates automatically from the AIRTH store. Always take prices from that list, and never use an old number from memory or from earlier in the chat.

Products priced on demand

These have no fixed price. Say the price is available on demand and the team will share a quote, then hand over to B2B / Projects:

• Air Purifier for FCU
• AHU Filters
• Advanced Air Quality Monitor
• Large commercial fresh-air systems

Pricing rules

• When asked “how much”, give the product’s current price with a short line on what it does. Add the buy link, but never send only a link.
• Quote the selling price, never the crossed-out MRP. You may mention the saving.
• For the Split AC purifier, ask the customer’s city or local AQI. North India in winter, or AQI 200 or above: Winter version. Anywhere else: Summer version.
• If asked for prices in general, list all fixed-price products one by one, and mention that FCU, AHU and the Advanced Air Quality Monitor are priced on demand.
• If a price is missing from the price list, never guess. Say you’ll confirm the latest price and share the product link.
• Forest Neo installation and cutting charges are not included in its price and are not quoted in chat; the team confirms them after a site check. EMI is available through Snapmint.
• Partner, dealer and bulk prices are never quoted in chat. Hand those over to the right team.

Website quantity discounts (applied at checkout)

• 1 product: free shipping
• 5 products: 5% off plus free shipping
• 10 products: 10% off plus free shipping

Marketplaces (Amazon and others)

Prices and deals depend on the platform.

Warranty, payment and compatibility

Topics: ceiling gap, space above AC, 8 cm, warranty, warranty registration, register product, guarantee, lifetime warranty, frame, filter life, replacement, payment, cash on delivery, COD, online payment, EMI, compatibility, AC brand, AC model, curved AC, will it fit

Warranty

• Air Purifier for Split AC (Summer and Winter): lifetime warranty on the frame.
• Smart Air Quality Monitor and Advanced Air Quality Monitor: 3 months warranty.
• Forest Neo: lifetime warranty on the metal body. The rest of the product has no warranty.
• HEPA filters: no warranty. Filters are consumables and cannot be reused. A filter lasts about 8 to 12 months, depending on the air quality in the area; in heavily polluted areas it may need replacing sooner.
• Air Purifier for Window AC and Air Purifier for Cassette AC: warranty terms are not in this knowledge base. Say you will confirm with the team; never guess.
• Fitting AIRTH does not void the AC’s own warranty, because nothing inside the AC is changed.

How to register the warranty:

• Register at airth.in/pages/subscribe. The customer can also scan the QR code on the product and enter the unique code printed on their unit.
• Encourage every new customer to register soon after buying.

Warranty claims, complaints and returns:

• Complaints and warranty claims: airth.in/pages/complaint
• Return and replacement policy: airth.in/pages/refund-and-return-policy

How to answer warranty questions:

• State the warranty exactly as written above. Never offer a longer or wider warranty.
• For a warranty claim (a damaged frame, a faulty monitor), collect the order ID, the product and photos, and hand over to Support.

Payment options

On the AIRTH website (airth.in), customers can pay by:

• Online payment
• Cash on delivery (COD)
• EMI

Forest Neo EMI is through Snapmint. For payment problems, refunds or invoice questions, hand over to Support.

AC compatibility

• AIRTH AC air purifiers work with all AC brands (for example Daikin, LG, Voltas, Samsung, Hitachi, Blue Star, Carrier, Lloyd, Panasonic and others).
• Some newer ACs with a curved front design need a quick check before buying. If the customer has a curved or unusual AC, ask them to share a photo of the AC and its model number, then hand over to Retail Sales to confirm the fit.
• Space above the AC: the Air Purifier for Split AC sits on top of the AC, so it needs at least 8 cm of free space between the top of the AC and the ceiling. If the customer’s AC is mounted close to the ceiling, ask them to check this gap. If it is less than 8 cm, ask for a photo of the AC and its model number and hand over to Retail Sales.
• Never confirm the fit of a curved AC, or an AC with less than 8 cm above it, without the team’s check.

Technical details

Topics: technical, CADR, airflow, pressure drop, blower, electricity, power, fan mode, filter design, dimensions, pre-filter, summer winter conversion, CO2, gases, VOC, formaldehyde, AC warranty, water leakage, competition, patent

CADR and airflow

AIRTH’s partial-coverage design covers about 50% of the AC inlet. Airflow drops by about 10%, and about 30% of the air passes through the filter.

• CADR (Summer) = AC rated airflow x 0.9 x 30%
• CADR (Winter, only for very polluted areas such as North India) = AC rated airflow x 50% (full inlet covered, airflow drops about 50%, AC in fan mode)

Reference numbers:

• About 1 CFM is needed per square foot; 1 ton of AC is about 400 CFM.
• Split ACs: 0.5 to 3 tons. FCUs: 3 to 7 tons. Large split or packaged units: 5 to 50 tons.
• Air purifiers run at 100 to 300 m3/hr; a split AC at 700 to 1,000 m3/hr. Even 30% of AC air through AIRTH is about 210 m3/hr of clean air.

Why AIRTH sits in the middle of the inlet: air through an AC is not even; most of it passes through the middle. Even if the filter loads up over time, the sides still let air through.

Pressure drop

• AIRTH H10 filter alone: about 37 Pa. Working in parallel with the open sides, overall pressure drop is about 15 Pa. Net airflow reduction is under 10%.
• AC without AIRTH: zero pressure drop at first, but it rises quickly as dust clogs the flat (2D) mesh.
• AC with AIRTH: slightly higher at first (about 15 Pa more) but it rises slowly, because AIRTH filters in depth (3D).

FCU example: per the AIRTH H10 report, pressure drop is 30 Pa at 205 FPM. Pressure drop rises with the square of velocity, so at 500 FPM it is about 178.5 Pa. With only 20 to 30% of air through the filter, the effective drop is about 53.5 Pa. Conventional HEPA 10 or MERV 16 filters need at least about 150 Pa, which is why no blower change is needed with AIRTH.

Blower concern: standard AC forward-curved fans (35 to 55W) handle AIRTH easily because the effective pressure drop is low (about 15 Pa), unlike conventional high-efficiency filters (about 150 Pa).

Operating cost and electricity

Day 1:

• AC with only the mesh filter: high airflow, but the flat mesh clogs quickly.
• AC with AIRTH: about 10% lower airflow and about 1 to 3% higher electricity at first.

With continued use:

• AC with only the mesh filter: airflow can fall to about a third.
• AC with AIRTH: higher airflow and lower electricity than the mesh-only AC.

BEE-certified lab test (3-month-old filter): about 12% lower electricity use and about 4% lower cooling capacity. Over time cooling efficiency improves because less fine dust reaches the coil.

Fan mode: the AC uses about 40W in fan mode, roughly a ceiling fan, so running it for clean air in winter or pleasant weather won’t spike the bill.

Filter design

• Core HEPA filter: 40 x 20 cm, 2.1 cm deep. Chosen after studying 100+ split AC models (most inlets are about 80 x 20 cm). A single 80 x 20 cm filter was not stable, so 40 x 20 cm at 2.1 cm depth was chosen for stability and dust-holding. Old internal name: APM (Air Purifier Module).
• Split Summer: 1 coated HEPA in the middle plus mesh airflow boosters on the sides. Split Winter: 2 coated HEPA covering the full inlet.
• Cassette: same filter area, 1.1 cm deep, fitted inside the panel.
• FCU: base plate along the inlet holding 40 x 20 x 2.1 cm filters, with magnetic tape for on-site orientation.
• Current version: a 20 x 52 cm base frame holds the 20 x 40 cm HEPA. A winter attachment clips on to convert Summer to Winter.
• Converting Summer to Winter: on the current version, attach the winter frame to the base frame. On older versions, replace the 1 HEPA plus 2 mesh panels with 2 HEPA filters.

Why there is no pre-filter on split and cassette units: ACs are mounted high on the wall or ceiling. Large particles settle by gravity before reaching the AC inlet, so only fine recirculated particles arrive. AIRTH is designed to catch exactly those. Over time the filter only changes colour; you won’t see large dust. (AHUs and standalone purifiers do benefit from pre-filters; that is a different design.)

What AIRTH filters can and cannot remove

Particulate matter (all removable): PM2.5, PM10, PM1, and living particles such as pollen, mould, viruses and bacteria, which are also deactivated by the green antimicrobial coating. Gases:

• CO2: cannot be removed by any filter. Only fresh air helps. Introduce Forest Neo, which brings in filtered outdoor air.
• CO: cannot be removed (common in multi-level parking).
• NOx: cannot be removed.
• SOx, formaldehyde (HCHO) and TVOC: not by coated HEPA; yes with AIRTH activated-carbon filters (available for FCU and AHU; Forest Neo includes a carbon filter).

AC warranty and safety

AIRTH sits on top of the AC and nothing inside the AC is changed, so it does not void the AC’s warranty. Lab tests show no effect on AC performance or the fan motor. If an AC fan motor (about Rs 2,000) were ever damaged by AIRTH, AIRTH would replace it; this has never happened.

AC leaking water with AIRTH installed

This is an AC issue, not caused by AIRTH. Likely causes and fixes:

1. Dirty or clogged cooling coil: clean the coil.
2. AC not level: remount with a slight tilt towards the drain side.
3. Drain pan overflowing: clean the pan.
4. Drain pipe blocked: clear it with a wet/dry vacuum or brush.
5. High room humidity: use a dehumidifier with the AC.
6. Faulty drain pump: technician check.
7. Low refrigerant (coil freezes, then melts): technician refill.

If the customer wants AIRTH to look at it, hand over to Support.

Competition and patent

AIRTH has filed for a PCT patent. With years of research, third-party test reports, disruptive pricing and 1 lakh+ customers, AIRTH is very hard to copy.

Air science and standards

Topics: air science, pollution, AQI, PM2.5, PM10, ultrafine, gases, CO2, VOC, ozone, health, lungs, standards, WHO, CPCB, ASHRAE, ISHRAE, LEED, IGBC, MERV, ISO 16890

Why clean indoor air matters

• Lungs don’t build immunity to pollution. Damage from polluted air is cumulative and irreversible, like slowly filling a pot.
• People spend about 90% of their time indoors and breathe about 25,000 times a day.
• With an AIRTH AC purifier you get clean air for at least a third of the day, including about 8 hours of sleep, so your lungs get rest to cope with pollution the rest of the day.

Types of pollutants

Particulate matter (PM):

• PM10 (coarse, 10 microns or smaller): dust, pollen, mould, construction. Irritates the airways.
• PM2.5 (fine, 2.5 microns or smaller): vehicles, burning, cigarette smoke, cooking. Goes deep into the lungs and bloodstream.
• Ultrafine particles (below 0.1 micron): can reach vital organs; the most harmful.
• Living particles: bacteria, viruses, mould spores, pollen.

Gases: SOx, NOx, CO, CO2, VOCs (benzene, formaldehyde, toluene), ozone (O3), ammonia (NH3).

Everyday comparisons (to make it relatable)

• PM2.5: like passively smoking 10 to 15 cigarettes a day.
• CO2: like running your brain on 60% battery: headaches, brain fog, the afternoon slump.
• VOCs: like slowly sipping toxic fumes (the “new furniture smell”).
• PM10: like breathing in sandpaper: sneezing, sinus trouble, worse asthma.
• Ozone: like bleaching your lungs from the inside.
• Bacteria and viruses: invisible hitchhikers; one sneeze can contaminate a room for hours.

Outdoor (ambient) standards: India CPCB vs WHO 2021

Units are micrograms per m3 unless noted.

• PM2.5: WHO annual 5, 24-hour 15. CPCB annual 40, 24-hour 60.
• PM10: WHO annual 15, 24-hour 45. CPCB annual 60, 24-hour 100.
• NO2: WHO annual 10, 24-hour 25. CPCB annual 40, 24-hour 80.
• SO2: WHO 24-hour 40. CPCB 24-hour 80, annual 50.
• CO: WHO 24-hour 4 mg/m3. CPCB 8-hour 2 mg/m3, 1-hour 4 mg/m3.
• Ozone: WHO 8-hour 100. CPCB 8-hour 100, 1-hour 180.
• CPCB also sets lead (annual 0.5), ammonia (24-hour 400) and benzene (annual 5).

Indoor guidelines

• CO2: US EPA 1,000 ppm; ASHRAE 700 ppm above outdoor; ISHRAE 800 to 1,000 ppm (Class A); LEED and IGBC about 1,000 ppm.
• CO: 9 ppm (8-hour) across EPA, ASHRAE, ISHRAE, LEED and IGBC; WHO 4 mg/m3 (24-hour).
• PM2.5 indoor: WHO 15 (24-hour); ISHRAE and IGBC 35 (Class A); LEED 15.
• PM10 indoor: WHO 45; ISHRAE and IGBC 75; LEED 50.
• Formaldehyde: WHO 0.1 mg/m3 (30 minutes); ASHRAE and ISHRAE 0.1 ppm (8-hour); LEED 20 micrograms/m3.
• TVOC: ISHRAE, LEED and IGBC 500 micrograms/m3 (Class A).

Air filter standards (relevant to AHUs)

• US ASHRAE MERV 1 to 20: MERV 1-4 large dust; 5-8 dust mites and mould; 9-12 fine dust and pet dander; 13-16 bacteria, smoke and virus carriers; 17-20 HEPA and ULPA (hospitals, clean rooms). Most buildings use MERV 8 to 13.
• Europe: EN 779 (F7 to F9), now replaced by ISO 16890 (ePM1, ePM2.5, ePM10). Rough equivalents: ePM10 50% is about MERV 8-9; ePM2.5 70% about MERV 13; ePM1 85% about MERV 15-16.
• AIRTH filter: H10 HEPA level, capturing particles down to 0.3 micron.

AHU filter types (reference): pre-filter (large dust), HEPA (99.97% at 0.3 micron and above), ULPA (99.9995% at 0.12 micron, for labs and pharma), activated carbon (gases, odours, VOCs), electrostatic, UV-C (sterilisation), photocatalytic (PCO), MERV pleated, and membrane (nanofiber, PTFE). These apply to AHUs; split, cassette and FCU units normally have only a mesh filter, and AIRTH adds a coated HEPA.

Orders and support

Topics: orders and support, warranty registration, return policy, replacement, order, tracking, delivery, shipping, cancellation, address change, complaint, refund, return, exchange, forms, links, contact

Orders, shipping and delivery

• Tracking: customers get an email with tracking once the order ships. Track at airth.in/apps/track-order/
• Delivery: 3 to 5 working days within India from the order date.
• Cancellation before dispatch: email support@airth.in with the reason. After dispatch: email the same address and the team will help.
• Address change before dispatch: email support@airth.in with the correct address. After dispatch the address cannot be changed.
• Never confirm a delivery date yourself; the team confirms.

Complaints

• File at airth.in/pages/complaint with the order ID, product, a description, and any photos or videos.
• Support reviews it; valid cases go to finance and operations. Response within 2 business days.
• Contact: phone 8700529995, support@airth.in

Refunds and exchanges

• Apply at airth.in/pages/complaint.
• Refunds only within 7 days of purchase (policy: airth.in/pages/refund-and-return-policy).
• The product must be unused and in its original packaging.
• Only for genuine product defects or wrong items received.
• Refunds are processed about 2 business days after approval. Exchanges start once the returned item is received and inspected.
• Used or personalised items may not be eligible, and damage from misuse may be refused.
• Never promise a refund yourself; hand over to Support.

Forms (guide each customer to the right one)

• General query: airth.in/pages/general-query
• Channel partner: airth.in/pages/partners
• ODCP partner: airth.in/pages/odcp-partner-form-page
• Installation partner: airth.in/pages/airth-installation-partner-new
• Bulk purchase: airth.in/pages/bulk-purchase
• Complaint: airth.in/pages/complaint
• Warranty registration: airth.in/pages/subscribe
• Return and replacement policy: airth.in/pages/refund-and-return-policy
• Commercial solution: airth.in/pages/industrial-solution

Product and buy links

• Air Purifier for Split AC - Summer: airth.in/products/air-purifier-for-split-ac-summer
• Air Purifier for Split AC - Winter: airth.in/products/air-purifier-for-split-ac
• Air Purifier for Window AC: airth.in/products/window-ac-air-purifier
• Air Purifier for Cassette AC: airth.in/products/cassette-ac-air-purifier/
• HEPA Replacement Filter - Summer: airth.in/products/hepa-filter-replacement/
• HEPA Replacement Filter - Winter: airth.in/products/hepa-filter-replacement-for-winter
• Air Purifier for FCU (enquire): airth.in/products/air-purifier-for-fcu
• AHU Filters (enquire): airth.in/products/ahu-filters
• Forest Neo: airth.in/products/forest-neo
• Smart Air Quality Monitor: airth.in/products/smart-air-quality-monitor
• Advanced Air Quality Monitor: airth.in/products/advanced-air-quality-monitor
• Track order: airth.in/apps/track-order/

Contact

• Phone: 8700529995
• Sales: hello@airth.in
• Support: support@airth.in
• Office: 907, 10th Floor, Westend Mall, Janakpuri, New Delhi

Apps and partner programs

Topics: app, AIRTH Care, AIRTH app, monitor app, AQI app, download, Play Store, App Store, Optra One, Optra, field service app, technician app, dealer app, service business software, partner form, channel partner, ODCP, installation partner, IP, SSD, dealer, become a partner

AIRTH Care app (for customers)

AIRTH Care is AIRTH’s free app for checking air quality and using AIRTH air quality monitors.

• Outdoor air quality: live AQI for your location or any place, with PM2.5, PM10, temperature, humidity and weather, and a one-tap snapshot to share.
• Indoor monitoring: live readings from your AIRTH monitor, room by room. Indoor readings need an AIRTH air quality monitor; outdoor AQI works without one.
• 24-hour history: hourly charts with minimum, average and maximum for each reading.
• Air quality map: monitors and public stations on a colour-coded map, with city comparisons and indoor vs outdoor comparison.
• Easy setup: switch on the monitor, connect to its hotspot from the app, and choose your home Wi-Fi. No cables.
• Homes and sharing: group monitors by home and room (bedroom, nursery, living room, office), and invite family members by phone number.
• Settings: display brightness, device names, Celsius or Fahrenheit, India CPCB (NAQI) or US EPA standard, light and dark themes, English and Hindi.
• Requires iOS 15.1 or later on iPhone and iPad.

Download: - Android (Google Play): play.google.com/store/apps/details?id=com.airth.consumer - iPhone (App Store): apps.apple.com/in/app/airth-care/id6798278377

Share these links whenever a customer buys or asks about an air quality monitor, asks how to set one up, or wants to check AQI.

Optra One (for AC service businesses)

Optra One is an AI-powered field service management app made by AIRTH Research Pvt Ltd. It helps AC technicians, sales and service dealers and HVAC businesses run their service business from one app. It also serves other field service trades, such as home appliances, electrical, plumbing, refrigeration, solar, CCTV, fire safety, elevators, RO water purifiers and pest control, from solo technicians to multi-branch teams.

What it does: - Manages customers, jobs, technicians, payments, AMC plans and scheduling in one place. - Create jobs through WhatsApp using simple messages. - AI auto-scheduling and auto-assignment by skill, distance, job value and availability. - Live technician location on a map, and a daily team performance dashboard. - Automatic branded invoices, payment tracking and reminders. - AMC and recurring service management with renewal reminders. - Inventory management for parts and stock.

Optra One says businesses using it see up to 2x more repeat customers, 2 hours saved a day and 40% more same-day job closures. Present these as Optra One’s own figures, not guarantees.

Get started: - Website and free demo booking: optra.one - Android (Google Play): play.google.com/store/apps/details?id=com.airth.partner - Contact: support@airth.in, +91 87005 29995

When to mention Optra One: to Sales & Service Dealers, technicians, installation partners, ODCPs and any AC or HVAC service business. Optra One pricing is not in this knowledge base. If asked about price, say the team will share it during the free demo, share optra.one, and hand over to Partner Network.

Partner programs and forms

Share the right form, then hand over to Partner Network: - Channel Partner (CP, MCCP, LOCP): airth.in/pages/partners - ODCP (technician-led channel partner): airth.in/pages/odcp-partner-form-page - Installation Partner (IP): airth.in/pages/airth-installation-partner-new - Sales & Service Dealer (SSD): airth.in/pages/partners

Proof assets

Topics: proof assets, report, validation, lab test, video, demo, installation video, testimonial, review, doctor, pulmonologist, case study, brochure, commercial, school, office, gym, hotel, luxury, mall

When to share

Share a link when the customer is unsure, asks for proof, or is close to deciding. Share ONE asset that fits, never a list of links:

• Health or doctor concern: a pulmonologist video.
• Worried AIRTH will harm the AC: “Can AIRTH harm your AC” video.
• Technical sceptic: a validation report or the FILTRIX video.
• Business buyer: the brochure for their segment (gym, hotel, office, school, or commercial), or a case study.
• Premium home buyer: the luxury brochure.
• Winter version buyer asking how to install: the Winter installation video.

Validation reports

• IIT Delhi (PM2.5 down 90%): drive.google.com/file/d/1KmSAXlTyhbV1skD8VuZQYkv6d8O3dtSw/view
• IIT Kanpur (sub-micron particles down 90%): drive.google.com/file/d/16_plTlhxxbij-79slt_4fux9xOCXpxP3/view
• IIT Bombay (CADR about 250 m3/hr, 5x better than ACs with built-in purifiers): drive.google.com/file/d/1O35B0Jr93wDBjWEIqjd1s9OP_QOLIGFm/view
• BEE lab (cooling and power): drive.google.com/file/d/1htfA7Kp_rA4Yvdq_gyBveNWNhuOnK33I/view
• NABL lab (SARS-CoV-2 deactivated 99% in 24 hours): drive.google.com/file/d/1pNjGgzPNEeijTzLs_oUHdh7-S-gMvIl7/view
• TUV Rheinland (bacteria deactivated 99%): drive.google.com/file/d/1syD17IpSmaE2UDkpY2Pxb5H4P3o-fCq4/view

Demo and explainer videos

• FILTRIX technology: youtu.be/w8J1uizZUs8
• How the Air Purifier for Split AC works: youtu.be/D_-7fOfO5pw
• Air Purifier for Split AC - Winter, installation: youtu.be/mdpMB5JjKyk
• Can AIRTH harm your AC (the most common worry): youtu.be/81sprzajWcE
• Airflow reduction explained: youtu.be/FIFIKKhz1h0
• Split cleaning and maintenance: youtu.be/rP9NGozSMCM
• Window installation: youtu.be/z1j78zhfwJo
• Window maintenance: youtu.be/w5AXf-7GpDw
• Cassette installation: youtu.be/0wgBuIjxRXU
• Cassette maintenance: youtu.be/qLmdqb06YJs

Customer testimonials

• Magnolias residents: Mrs Shroff youtu.be/dv8mZIOgMM8, Mr Percy Shroff youtu.be/osPC_5RFcs4, Mr Anurag Duggal youtu.be/Hj9nS52yFVE, Mr Ashok Dosaj youtu.be/0yvgFU39Eeg
• Delhi residents: Shubhang Shankar youtu.be/EvOicekvT5E, Ankush Jain youtu.be/lxa1r6zwlLA
• COPD patient: youtu.be/mJtnStPQ-SU
• Gym: youtu.be/wMYlIYPUVYA
• Vegas Mall: youtu.be/BI1Hjd_jmsM

Doctors and academics

• Pulmonologist Dr Mayank Saxena: youtu.be/YGJOEBa6b4k
• Pulmonologist Dr KN Gupta: youtu.be/p6GjfeM_3Ks
• IIT Kanpur microbiology lab: youtu.be/Ugq9siowMyg
• Prof Ankush Sharma (IIT Kanpur): youtu.be/d5xKH4I3IS0
• Prof Amitabha Bandopadhyay (IIT Kanpur): youtu.be/9eypH76dmjU

Case studies (business buyers)

• The Beacon School: 22 classrooms and 38 ACs upgraded in one day; PM2.5 down 83%; about Rs 10,000 per room versus about Rs 80,000 for alternatives.
• IIT Kanpur: classrooms and research spaces.
• Dell Bangalore: fewer sick days.
• Vegas Mall Dwarka: high-footfall mall.
• India Post Payments Bank: branches.
• Hospitality and corporate clients: Taj Palace New Delhi, Titan EyePlus, Tanishq, IOCL, Cult Fit gyms.

Brochures

Share the brochure that matches the customer’s segment. In chat, share the MOBILE version by default. Share the desktop version only if they ask for a PDF to print, forward by email, or view on a laptop.

Commercial (general business buyers, any segment not listed below):

• drive.google.com/file/d/11KlViOYPtql8lqqcyWFzI6SbZf8x8uxZ/view

Gym:

• Mobile: drive.google.com/file/d/1kz2DdC4TPfiLIoZm2bbtceIai8wwL844/view
• Desktop: drive.google.com/file/d/1hbEHAcKZwHYIXlmoCnqEXVVIvdhkB7w4/view

Hotel:

• Mobile: drive.google.com/file/d/1PTSkor60NmF2BE23LAQAILPQt4GabQSd/view
• Desktop: drive.google.com/file/d/1uNl9dR3w6QovTxTc_CcZgWwvyN9hKYzD/view

Luxury homes (premium residences, villas, high-end apartments):

• Mobile: drive.google.com/file/d/15fxX3n5VdxUKzy4kBR9q-zDrlwC48cSS/view
• Desktop: drive.google.com/file/d/1H7803OInmr-RtLSyuIIdR5Wcud9NiCK3/view

Office:

• Mobile: drive.google.com/file/d/1HWUkRdIv6KDNIzf51XIcZcAvAojgCS0j/view
• Desktop: drive.google.com/file/d/1kBOo-dMlAgtt92mfxiHVmmxDQZirm8ZS/view

School:

• Mobile: drive.google.com/file/d/1NvIdb0rL8RMxN1CM4pQQtFi4HcMAmX2v/view
• Desktop: drive.google.com/file/d/12zYjUfIaDTKwjtZZl9S_7Rd5jM6guHZS/view

Product brochures:

• AHU: drive.google.com/file/d/1rwdz1YBl1xE7ZBPdu9wJp5U6ECx2XKKX/view
• Large commercial fresh-air systems (B2B only, not the home Forest Neo): drive.google.com/file/d/1E_RXDICfqKZwFQZuzwDgpvgWo21NEMwX/view

Partner videos

• CEO margin structure: English youtu.be/6G80_uH6b4E, Hindi youtu.be/M3nTi_1kKG0