The stakes
Start with the air inside your home.
You breathe most of your air at home, in the rooms where you sleep, work and spend time together. Measure those rooms first. The readings show you where you’re starting from.
Read moreAll year, across India
Not just winter. Not just Delhi.
Outdoor air changes through the year. Compare indoor readings across seasons, and note when you cook and how many people are home. Treat particles and fresh air as two separate questions.
Read moreTwo different jobs
Particle filtration. Fresh-air supply.
A single-room recirculating air purifier cleans the air in the room it sits in. A whole-home air purifier also brings in outdoor air, filtered first. Choose by your rooms, the people in them and the airflow you need.
Read moreWhole-home filtered fresh air
aqi0 air purifier. One for the whole home.
H13 HEPA, Japanese media
Outdoor air enters through H13 HEPA.
Outdoor air passes through H13 HEPA filters before it enters your home. The pre-filter is washable and the HEPA panels are replaceable. Both need regular care to keep the airflow up.
Read moreGerman EC fan
Your home pressurises slightly.
A German EC fan brings filtered outdoor air into your home: about 500 m³/h effective in service (about 700 m³/h rated). Before installation, we check where the intake goes and how air will move through the rooms you use.
Read moreThe way out
Stale air exits through natural gaps.
Clean air comes in through the system. Stale air leaves through natural gaps, like the space under doors, and through the kitchen exhaust. We check these paths before installation.
Read moreMeasure the difference
Check your rooms. Keep the readings.
Measure before and after installation, under similar conditions. Note who was home, how the system was set and what the outdoor air was like. Then the numbers mean something.
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