The Xian IAQ Lab
Measure the air. Then engineer it.
The Xian IAQ Lab is our dedicated indoor air quality practice — instrumented audits, data-backed diagnosis and engineered remediation for homes, offices, schools, hospitals and industrial spaces across the NCR.
Calibrated monitoring across a full working cycle
An air quality complaint is usually a design problem
Most air quality complaints are not a filter problem — they are a design problem. Our engineers measure what a space is actually doing across a working day, model the fresh-air and filtration it needs, and then deliver the fix as an HVAC scope: ventilation rates, filtration stages, humidity control and controls logic, commissioned and verified against the same instruments we started with.
- A written IAQ report with logged data, not a single spot reading
- Benchmarks against ASHRAE 62.1, NBC and WHO guidance
- Root-cause diagnosis tied to your actual HVAC system
- A costed remediation scope you are free to tender elsewhere
- Post-commissioning re-measurement to prove the fix worked
- Optional continuous monitoring with periodic reviews
Eight parameters that decide how a building feels
Each one is logged over time and read together — a single number in isolation rarely tells you what to fix.
PM2.5 / PM10
Particulate Matter
Fine dust that reaches the lungs — the headline pollutant in North Indian winters.
CO₂
Carbon Dioxide
The clearest proxy for under-ventilation, drowsiness and lost concentration in occupied rooms.
CO
Carbon Monoxide
Life-safety critical in basements, car parks and spaces near combustion.
TVOC
Volatile Organic Compounds
Off-gassing from paints, adhesives, furnishings and cleaning agents.
HCHO
Formaldehyde
Common in newly fitted-out interiors and engineered wood.
°C / %RH
Temperature & Humidity
Comfort, condensation risk and mould growth all trace back to these two.
CFM / ACH
Fresh Air & Air Changes
Measured supply against code and occupancy — the number most buildings get wrong.
Pa
Airflow & Pressure Balance
Room-to-room pressurisation that decides where contaminated air actually travels.
From walkthrough to verified air
A structured six-step engagement — you can stop after the report, or have us deliver the fix end to end.
Walkthrough & Brief
We map the space, occupancy pattern, existing HVAC and the specific complaints being reported.
Instrumented Audit
Calibrated monitors log every key parameter across a full working cycle — not a single spot reading.
Diagnosis & Report
A written report benchmarking your air against ASHRAE 62.1, NBC and WHO guidance, with the root cause named.
Engineered Remediation
Fresh-air, filtration, humidity and controls designed as a costed HVAC scope — not a product upsell.
Execution
Our own installation teams deliver the scope, with minimal disruption to an occupied building.
Verification & Monitoring
We re-measure after commissioning and can leave continuous monitoring in place to prove it holds.
What we actually install once the data is in
Every recommendation is an engineered HVAC scope our own teams can design, deliver and maintain.
Treated Fresh Air
TFA units and outdoor-air handling sized to real occupancy, so ventilation does not come at the cost of the cooling load.
Energy & Heat Recovery
ERV / HRV systems that bring in outside air while recovering most of the energy you already paid for.
Multi-Stage Filtration
Pre-filters, fine filters and HEPA stages selected for the particulate load your building actually sees.
Humidity Control
Dehumidification and desiccant systems that hold RH in the band where mould and discomfort both stop.
Air Purification & UVGI
In-duct purification and ultraviolet germicidal stages for healthcare, labs and high-density interiors.
Demand-Based Controls
CO₂- and CO-driven ventilation control that ventilates when the building needs it and saves energy when it does not.
Spaces we audit
Fifty years of HVAC execution across North India means we have usually seen your building type before.
Homes & Residences
Nurseries, bedrooms and closed apartments where winter PM2.5 and low fresh air are the usual culprits.
Offices & Workplaces
CO₂ build-up, afternoon drowsiness and complaints that survive every thermostat change.
Schools & Institutions
High-density classrooms where ventilation drives both health and measurable concentration.
Hospitals & Clinics
Pressurisation, filtration and air-change regimes engineered to clinical requirements.
Retail & Hospitality
Kitchens, lobbies and banquet spaces where odour transfer and make-up air need balancing.
Industrial Spaces
Process exhaust, fume capture and basement CO control audited against life-safety codes.
Find out what your air is really doing
Tell us the space, its size and what you have been noticing. Our engineers will scope an audit and share a timeline — reports typically follow within a week of monitoring.
Let’s design comfort that feels effortless.
Share your project — residential, commercial or industrial — and our engineers will map the right HVAC solution for you.