There was a download of FireCAD AirHeater 3.0 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The program is sometimes distributed under different names, such as "FireCAD AirHeater Trial".
This software is an intellectual property of FireCAD Technologies. The software lies within Office Tools, more precisely Calculators. The most popular version among the program users is 3.0. The latest version of the software can be downloaded for PCs running Windows XP/7/8, 32-bit. We recommend checking the downloaded files with any free antivirus.
From the developer:
FireCAD AirHeater is a program that enables you to calculate various heat conditions for boilers. You can insert the tube and the shell side details, the gas composition, source, type and the program will display the air heater details such as heat load, surface area and mass velocity.
You may want to check out more software, such as OC Conversion Pro, CAS SI Unit Converter or CelsiusConverter, which might be related to FireCAD AirHeater.