Filtration technology
The three filter layers and what each one removes.
100 answers
What are the three stages?+
PP pre-filter + H13 True HEPA + activated carbon cotton. The pre-filter catches hair and large dust, HEPA traps fine particles, and carbon handles odours and gases.
Is it True HEPA or HEPA-type?+
H13 True HEPA — tested to capture 99.97% of particles at 0.3 microns, the hardest size to trap.
Does it use UV light?+
No. UV needs long contact time to be useful and can create by-products; Kevelin relies on proven mechanical filtration.
Can the filter release trapped particles back?+
No. Particles are physically held in the fibre matrix; they don't blow back into the room during normal use.
Which stage removes PM2.5?+
The H13 True HEPA layer, with the PP pre-filter catching the coarser fraction of PM2.5 first.
Which stage removes PM10?+
The H13 True HEPA layer, with the PP pre-filter catching the coarser fraction of PM10 first.
Which stage removes ultrafine 0.3-micron particles?+
The H13 True HEPA layer, with the PP pre-filter catching the coarser fraction of ultrafine 0.3-micron particles first.
Which stage removes construction dust?+
The H13 True HEPA layer, with the PP pre-filter catching the coarser fraction of construction dust first.
Which stage removes road dust?+
The H13 True HEPA layer, with the PP pre-filter catching the coarser fraction of road dust first.
Which stage removes house dust?+
The H13 True HEPA layer, with the PP pre-filter catching the coarser fraction of house dust first.
Which stage removes dust-mite debris?+
The H13 True HEPA layer, with the PP pre-filter catching the coarser fraction of dust-mite debris first.
Which stage removes pollen?+
The H13 True HEPA layer, with the PP pre-filter catching the coarser fraction of pollen first.
Which stage removes mould spores?+
The H13 True HEPA layer, with the PP pre-filter catching the coarser fraction of mould spores first.
Which stage removes pet dander?+
The H13 True HEPA layer, with the PP pre-filter catching the coarser fraction of pet dander first.
Which stage removes pet hair?+
The H13 True HEPA layer, with the PP pre-filter catching the coarser fraction of pet hair first.
Which stage removes cooking smoke?+
The activated carbon cotton adsorbs the gas and odour part of cooking smoke, while HEPA traps the solid particles it carries.
Which stage removes deep-fry odours?+
The activated carbon cotton adsorbs the gas and odour part of deep-fry odours, while HEPA traps the solid particles it carries.
Which stage removes tadka smoke?+
The activated carbon cotton adsorbs the gas and odour part of tadka smoke, while HEPA traps the solid particles it carries.
Which stage removes incense smoke?+
The activated carbon cotton adsorbs the gas and odour part of incense smoke, while HEPA traps the solid particles it carries.
Which stage removes mosquito-coil smoke?+
The activated carbon cotton adsorbs the gas and odour part of mosquito-coil smoke, while HEPA traps the solid particles it carries.
Which stage removes candle soot?+
The H13 True HEPA layer, with the PP pre-filter catching the coarser fraction of candle soot first.
Which stage removes cigarette smoke?+
The activated carbon cotton adsorbs the gas and odour part of cigarette smoke, while HEPA traps the solid particles it carries.
Which stage removes vehicle exhaust?+
The H13 True HEPA layer, with the PP pre-filter catching the coarser fraction of vehicle exhaust first.
Which stage removes diesel soot?+
The H13 True HEPA layer, with the PP pre-filter catching the coarser fraction of diesel soot first.
Which stage removes industrial haze?+
The H13 True HEPA layer, with the PP pre-filter catching the coarser fraction of industrial haze first.
Which stage removes stubble-burning smoke?+
The activated carbon cotton adsorbs the gas and odour part of stubble-burning smoke, while HEPA traps the solid particles it carries.
Which stage removes firecracker smoke?+
The activated carbon cotton adsorbs the gas and odour part of firecracker smoke, while HEPA traps the solid particles it carries.
Which stage removes paint fumes?+
The activated carbon cotton adsorbs the gas and odour part of paint fumes, while HEPA traps the solid particles it carries.
Which stage removes new-furniture off-gassing?+
The H13 True HEPA layer, with the PP pre-filter catching the coarser fraction of new-furniture off-gassing first.
Which stage removes formaldehyde?+
The activated carbon cotton adsorbs the gas and odour part of formaldehyde, while HEPA traps the solid particles it carries.
Which stage removes cleaning-product fumes?+
The activated carbon cotton adsorbs the gas and odour part of cleaning-product fumes, while HEPA traps the solid particles it carries.
Which stage removes damp musty odours?+
The activated carbon cotton adsorbs the gas and odour part of damp musty odours, while HEPA traps the solid particles it carries.
Which stage removes garbage odours?+
The activated carbon cotton adsorbs the gas and odour part of garbage odours, while HEPA traps the solid particles it carries.
Which stage removes airborne droplets?+
The H13 True HEPA layer, with the PP pre-filter catching the coarser fraction of airborne droplets first.
Does the filtration help with allergic rhinitis?+
It reduces the airborne triggers linked to allergic rhinitis — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with asthma?+
It reduces the airborne triggers linked to asthma — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with sinus congestion?+
It reduces the airborne triggers linked to sinus congestion — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with morning sneezing?+
It reduces the airborne triggers linked to morning sneezing — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with itchy eyes?+
It reduces the airborne triggers linked to itchy eyes — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with watery eyes?+
It reduces the airborne triggers linked to watery eyes — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with dry throat?+
It reduces the airborne triggers linked to dry throat — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with a lingering cough?+
It reduces the airborne triggers linked to a lingering cough — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with wheezing?+
It reduces the airborne triggers linked to wheezing — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with breathlessness?+
It reduces the airborne triggers linked to breathlessness — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with snoring?+
It reduces the airborne triggers linked to snoring — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with poor sleep?+
It reduces the airborne triggers linked to poor sleep — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with headaches?+
It reduces the airborne triggers linked to headaches — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with brain fog?+
It reduces the airborne triggers linked to brain fog — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with skin irritation?+
It reduces the airborne triggers linked to skin irritation — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with eczema flare-ups?+
It reduces the airborne triggers linked to eczema flare-ups — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with COPD?+
It reduces the airborne triggers linked to COPD — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with bronchitis?+
It reduces the airborne triggers linked to bronchitis — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with sensitivity during pregnancy?+
It reduces the airborne triggers linked to sensitivity during pregnancy — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with a newborn's breathing?+
It reduces the airborne triggers linked to a newborn's breathing — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with toddler colds?+
It reduces the airborne triggers linked to toddler colds — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with frequent infections in school-age kids?+
It reduces the airborne triggers linked to frequent infections in school-age kids — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with elderly lung health?+
It reduces the airborne triggers linked to elderly lung health — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with lung recovery after illness?+
It reduces the airborne triggers linked to lung recovery after illness — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with smoker's cough?+
It reduces the airborne triggers linked to smoker's cough — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with odour-triggered migraines?+
It reduces the airborne triggers linked to odour-triggered migraines — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with nasal discomfort?+
It reduces the airborne triggers linked to nasal discomfort — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with dust allergy?+
It reduces the airborne triggers linked to dust allergy — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with pet allergy?+
It reduces the airborne triggers linked to pet allergy — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
Does the filtration help with pollen allergy?+
It reduces the airborne triggers linked to pollen allergy — fine particles, dander, pollen and spores. It supports, but does not replace, medical care.
How does the filtration cope while sleeping?+
The three layers work in sequence while sleeping. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope while working from home?+
The three layers work in sequence while working from home. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope during online classes?+
The three layers work in sequence during online classes. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope while cooking?+
The three layers work in sequence while cooking. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope just after cooking?+
The three layers work in sequence just after cooking. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope during a party?+
The three layers work in sequence during a party. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope while painting a room?+
The three layers work in sequence while painting a room. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope during renovation?+
The three layers work in sequence during renovation. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope in monsoon humidity?+
The three layers work in sequence in monsoon humidity. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope during Diwali week?+
The three layers work in sequence during Diwali week. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope during winter smog?+
The three layers work in sequence during winter smog. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope on a high-AQI day?+
The three layers work in sequence on a high-AQI day. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope when windows must stay open?+
The three layers work in sequence when windows must stay open. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope in a ground-floor flat on a main road?+
The three layers work in sequence in a ground-floor flat on a main road. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope in a top-floor flat?+
The three layers work in sequence in a top-floor flat. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope in an old building?+
The three layers work in sequence in an old building. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope in a newly built flat?+
The three layers work in sequence in a newly built flat. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope with a pet cat?+
The three layers work in sequence with a pet cat. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope with a pet dog?+
The three layers work in sequence with a pet dog. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope with two pets?+
The three layers work in sequence with two pets. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope with a newborn at home?+
The three layers work in sequence with a newborn at home. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope with elderly parents at home?+
The three layers work in sequence with elderly parents at home. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope in a shared flat?+
The three layers work in sequence in a shared flat. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope in a PG room?+
The three layers work in sequence in a PG room. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope while moving between homes?+
The three layers work in sequence while moving between homes. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope during a house move?+
The three layers work in sequence during a house move. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope in a smoking household?+
The three layers work in sequence in a smoking household. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope near a construction site?+
The three layers work in sequence near a construction site. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope near a busy junction?+
The three layers work in sequence near a busy junction. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope near a garbage point?+
The three layers work in sequence near a garbage point. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope during pollen season?+
The three layers work in sequence during pollen season. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
How does the filtration cope during a dust storm?+
The three layers work in sequence during a dust storm. Run a higher speed for the first 20–30 minutes, then let Auto settle it.
Filtration technology in Delhi: what should I know?+
The three filter layers and what each one removes. The guidance is the same in Delhi as anywhere in India — run the unit in the room you use most, keep it within 14–24 m² (about 150–258 sq ft), and check the live AQI page before opening windows.
Filtration technology in New Delhi: what should I know?+
The three filter layers and what each one removes. The guidance is the same in New Delhi as anywhere in India — run the unit in the room you use most, keep it within 14–24 m² (about 150–258 sq ft), and check the live AQI page before opening windows.
Filtration technology in Noida: what should I know?+
The three filter layers and what each one removes. The guidance is the same in Noida as anywhere in India — run the unit in the room you use most, keep it within 14–24 m² (about 150–258 sq ft), and check the live AQI page before opening windows.
Filtration technology in Gurugram: what should I know?+
The three filter layers and what each one removes. The guidance is the same in Gurugram as anywhere in India — run the unit in the room you use most, keep it within 14–24 m² (about 150–258 sq ft), and check the live AQI page before opening windows.