Fresh Air Ventilation in Visakhapatnam
Tropical coastal — humid, cyclone-prone, industrial port pollution

What makes ventilation difficult in Visakhapatnam?
Vizag is a major port city with steel and pharmaceutical industries. Coastal humidity is high year-round, cyclone season (October–December) brings extreme weather, and industrial sources from Vizag Steel and the port contribute to AQI.
Which machine is right for Visakhapatnam?
RHP Series + HEPA-13
Vizag's combination of coastal humidity (70–90% RH) and industrial PM2.5 from port and steel operations requires RHP treatment: active dehumidification removes coastal moisture from incoming air, while HEPA-13 captures both fine industrial particulates and sea salt aerosols. The system performs reliably through cyclone season and post-storm recovery phases.
For Visakhapatnam we specify RHP Heat Pump ERV as the default, with HEPA-13 (industrial port city) filtration. Models: RHP INA-RHP Series (ceiling or floor-standing). Model-by-model airflow, static pressure and power figures are on the spec sheets.
Typically installed in: Apartments · Villas · Offices · Healthcare · Port-area commercial.
Also worth considering: Revita ERV with HEPA-13 filter box for budget projects away from immediate port and industrial zones
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. Visakhapatnam then adds two local constraints: a summer peak of 35–42°C, which decides how much heat recovery is worth paying for, and humidity of 70–90% RH, which decides whether plain recovery is enough or whether active dehumidification is needed.