HVAC and building services
ACH from air flow
Calculates air changes per hour from air flow and room volume.
Related calculators
Simple absolute humidity
Calculates auxiliary absolute humidity from water vapor pressure and temperature without climate tables.
Fan power from flow and pressure rise
Calculates auxiliary fan power from volumetric flow rate, pressure rise, and efficiency.
Occupancy ventilation flow
Calculates air flow from occupant count and flow per person.
Ventilation heat loss
Calculates a helper sensible heat-loss estimate for an air stream from density, specific heat, flow rate and temperature difference.
Air cooling power from flow and delta T
Estimates sensible air cooling power from volumetric flow rate and temperature difference.
Air heating power from flow and delta T
Estimates air heating power from volumetric flow rate and temperature difference.