Fresh Air Ventilation in Chandigarh
Composite — extreme range: 45°C summer to 2°C winter

What makes ventilation difficult in Chandigarh?
Chandigarh spans an extreme temperature range — India's best-planned city but with highly variable climate. Winter AQI spikes as cold air traps pollutants. Summers are North India's hottest. A system must handle both extremes effectively.
Which machine is right for Chandigarh?
RHP + HEPA-13 (Preferred) · Revita ERV + HEPA-13 (Standard)
The 45°C summer benefits from RHP active cooling; 2°C winters benefit from heat recovery that prevents cold air from reducing indoor temperatures. HEPA-13 is essential for winter months when Punjab/Haryana AQI deteriorates significantly. RHP's full-range performance (cooling + heating + dehumidification + filtration) makes it the preferred single system for Chandigarh's extreme climate span.
For Chandigarh we specify Revita ERV or RHP Heat Pump as the default, with HEPA-13 (winter AQI spikes require it) filtration. Models: RHP INA-RHP Series (preferred), Revita INA-MFQR + HEPA-13 filter box (standard). Model-by-model airflow, static pressure and power figures are on the spec sheets.
Typically installed in: Premium apartments · Schools · Healthcare facilities · Government housing.
Also worth considering: Revita ERV + HEPA-13 is cost-effective if separate HVAC handles seasonal temperature extremes
How is a system sized here?
Sizing is driven by occupancy, not floor area — CO2 comes from people, so a small crowded flat needs more air than a large empty one. ASHRAE 62.1 sets the airflow per person; that number picks the unit. Chandigarh then adds two local constraints: a summer peak of 42–46°C, which decides how much heat recovery is worth paying for, and humidity of 30–70% RH, which decides whether plain recovery is enough or whether active dehumidification is needed.