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Software Products

Our software products provide libraries of accurate engineering functions which are available through add-ins and calculators. The add-ins attach directly to Microsoft Excel, Lotus 1-2-3 and MathCad. They are used just like any of the built-in functions and require no macros or modules attached to the spreadsheets.

WinSteam thermodynamic steam properties add-ins and calculator
@Air thermodynamic moist air properties add-ins and calculator
@Gas thermodynamic flue gas properties add-ins and calculator
XLInterp linear and non-linear interpolation functions for Excel
DeskTop Steam just the steam properties calculator (included in WinSteam)
DeskTop Air just the air properties calculator (included in @Air)

What's New

Compatibility with Microsoft Office 2010

Version 4.0 of WinSteam, @Air, @Gas and XLInterp are compatible with both 32-bit and 64-bit operating systems and will work with 32-bit and 64-bit versions of Microsoft Excel 2010. In Version 4.0, all help files have been converted to compiled HTML format, which is compatible with all recent versions of Windows. WinSteam 4.0 is now available. @Air 4.0, @Gas 4.0 and XLInterp 4.0 will be available shortly.

WinSteam 4.0 Now Available

WinSteam 4.0 is now available for sale. You may download the software and install it as a demo so that you can test the 64-bit functionality. All new orders for WinSteam will be filled with WinSteam 4.0. New licenses for WinSteam 3.2 will be available for some time by special request. We will continue support for it and earlier versions. In addition to support for 64-bit applications, WinSteam 4.0 increases the range of pressure for Region 5, the high temperature region to 50 Mpa (7251.9 psia) and includes improvements to the transport properties issued by IAPWS in 2008.

Compatibility with Office 2007 and Earlier

The latest versions, WinSteam 4.0, @Air 4.0, @Gas 4.0 and XLInterp 4.0 are compatible with Microsoft Office 2007, Office 2003 and Office XP. The Excel add-in for Office 2007 and later is different from the add-in for earlier versions of Office in that it supports the larger worksheet size. The installation program will detect which version of Office you have and install the proper add-in automatically. For all version 4.0 products, you will have to go to the TechwareEng group on the Start Menu to launch Help.

Version 4.0 Pricing

The pricing for all version 4.0 products will be the same as the previous version. Upgrades from versions 3.0, 3.1 and 3.2 of WinSteam, @Air and @Gas as well as versions 1.1 and 1.2 of XLInterp are available for a price of $99.00 each. Upgrades from older versions are available for $149.00 each. Check the pricing schedule for details.

If you purchased WinSteam, @Air, @Gas or XLInterp after October 31, 2011, you qualify for a free upgrade to version 4.0. Contact Techware for your upgrade. You will have to be issued a new serial number.

All pricing is based on downloading the software, which has many advantages over a physical delivery. It is fast, easy and you don't have to worry about losing your CD. The software is always available for download from our website whenever you need it and you are insured of installing the latest version. Physical delivery of new purchases is available for additional charges.