HVAC Calculator allows performing different calculations for HVAC systems engineering.
The program is a complex unique by its size and content comprising 38 calculations vital for any HVAC engineer.
Now all the most up-to-date calculations are readily available for you perform calculations anywhere: at a construction site in negotiating in a transport office auditorium etc.
You can select Imperial or Metric units in the program.
This program is also available online for PC: http://www.softhvac.com/hvac-calculator