EQS Air
Drag a point on the chart and every property follows. Mix two air streams and size a coil in seconds, on your iPhone, iPad and Mac.
In App Review now. One purchase for iPhone, iPad and Mac.
iPhone and iPad with iOS 16 or later · Mac with macOS 12 or later · Apple silicon and Intel
Dry bulb, wet bulb, dew point, relative humidity, humidity ratio, enthalpy or specific volume: give any two and get the rest, at your site's elevation.
Every state is a point on a real psychrometric chart. Slide it with a finger or the mouse; tap the chart to read the air anywhere.
Mix outdoor and return air by their airflows. Join two points as a coil, heater or humidifier and read the total, sensible and latent load and the water removed.
°C, kPa, kJ/kg and g/kg, or °F, psia, Btu/lb, grains, CFM and tons. One tap switches the whole app.
ASHRAE Handbook – Fundamentals: Hyland–Wexler saturation over water and ice, the thermodynamic wet bulb, the standard atmosphere. Checked against CoolProp.
No account, no ads, no tracking, no internet. Copy any result as a table for a report or a spreadsheet.
HVAC engineers and technicians, energy auditors and students who need the state of moist air and the loads of air treatment.
It uses the moist-air equations of the ASHRAE Handbook – Fundamentals and agrees with CoolProp's humid-air model within a few tenths of a per cent from −20 °C to 50 °C.
Yes. It never connects: your points stay on your device.