Air Psychrometric calculator

AHU PSYCHROMETRIC CALCULATOR is designed for engineers involved in air conditioning design. It allows you to eliminate the time-consuming process of psychrometric chart graphical calculation.
"Tornado" counts heating, cooling air-handling equipment loads, water flow rate, air parameters after each element. Design criteria is required : heat and moister (latent heat) indoor gains (may be null), temperatures - indoor and outdoor dry and relative humidity (or dew point or wet bulb). Inside relative humidity need not always.
"Tornado" automatically determines the desired fan discharge temperature and humidity to absorb energy and moisture from the room thermal load.

the missed opportunities

As I can see on the site statistics, more than 7,000 calculations were made without user registration.
Colleagues, you are missing the opportunity to save your input data to the site database for easy RECALCULATION in future! In case you register you can return to your calculations any time!
I recommend to register to ease your future recalculations.

AHU calculation fee

On april, 1 2017 we will begin to charge for AHU calculations, offering per calculation fee, as well as dayly, monthly and annual subscriptions.
As new users, we are happy to offer you 10 free HVAC calculation. In order to take advantage of this offer, please sing-in.

Input Examples

Online HVAC calculatinos