Applications

Ventilation for Homes, Schools, Offices and Industry

Sealed is the problem. We solve it everywhere.

Every sealed space has a unique ventilation challenge. Inair designs and installs systems for homes, offices, hospitals, hotels, kitchens, factories — each specified for the exact space.

Residential
Homes & Apartments
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Commercial
Office Buildings
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Healthcare
Hospital & Clinic
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Fitness
Gyms & Studios
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Hospitality
Hotels
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Food Service
Commercial Kitchens
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Food Production
Bakery Ventilation
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Education
Libraries & Schools
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Industrial
Production Halls
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Dining
Restaurants
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Retail
Shopping Centers
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Technology
Server Rooms
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Education
Schools & Kindergartens
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Sports
Sports Halls
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Services
Laundry Services
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Industrial
Paint Shops
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Industrial
Printing Works
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Every space is different

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Why does the building type change the answer?

Every sealed building has the same underlying problem — air conditioning recirculates the air already in the room, so carbon dioxide, moisture and volatile compounds accumulate while the temperature stays comfortable. What changes between a home, a school, an office and a factory is not the principle but three numbers: how many people are in the space, how long they stay, and what else in the room is adding to the load.

Occupant density is the dominant term. A classroom holds thirty people in a volume sized for a fraction of that, so it needs several times the airflow per square metre that a living room does. A hospital adds infection control to the brief. A factory adds process contaminants that have nothing to do with occupancy at all. Sizing therefore starts from people and activity, then adjusts for the local climate and air quality — which is why the same building specification produces a different machine in Kochi than in Delhi NCR.

What gets specified where?

Homes and apartments take a Revita ERV, or an RHP heat-pump unit where humidity is high enough to need active dehumidification. Schools, offices and healthcare take the Ventura range at commercial airflow, usually with CO2-driven demand control so the rate follows occupancy. Kitchens, toilets and basements are extract duties handled by commercial extraction, toilet exhaust and jet fans. Industrial buildings use radial and centrifugal fans for process air movement, with ERV serving the occupied areas.

In every case the extract side has to be balanced against the supply side. Extract alone leaves the building at negative pressure, and the replacement air arrives unfiltered through whatever gaps exist — which in a high-AQI city undoes the filtration entirely.

Further reading

Application questions

What do people ask about their building type?

ASHRAE 62.2 sets residential ventilation from floor area and bedroom count; the practical effect in an Indian apartment is a continuous rate in the region of 100–250 m³/h for a 2–3 BHK. The number that matters is occupancy, because CO2 is produced by people: a closed bedroom with two adults passes 1,500 ppm well before morning, which is the level at which measured cognitive performance falls.
Occupant density. A classroom packs thirty people into a room sized for far fewer, so CO2 rises faster than anywhere else in the built environment and the ventilation rate is set per person rather than per square metre. Demand-controlled ventilation driven by a CO2 sensor matches the airflow to how full the room actually is, which is both better air and lower energy than running a fixed high rate all day.
The same principles at a different scale. Offices need higher absolute airflow, ducted distribution across a floor plate, and usually integration with the building management system so ventilation follows occupancy and working hours. The Ventura range covers commercial airflow; the Revita range covers residential. Filtration grade is set by the city, not by the building type.
These are extract duties rather than fresh-air supply, and they matter because unbalanced extract pulls unfiltered air in through every gap in the building. Kitchen and toilet extract should be sized and balanced against the fresh-air supply so the building stays close to neutral pressure. Basements and car parks are a separate problem again — ductless thrust ventilation with jet fans dilutes vehicle emissions and supports smoke movement.
Partly. Air movement and extract use industrial radial and centrifugal fans sized for the process duty. Where the occupied part of an industrial building needs clean, conditioned fresh air, the same ERV and heat-pump equipment applies as in a commercial building. The difference is usually filtration and materials specification rather than the ventilation principle.