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HISTORY

Pro-Est HVAC software is the brainchild of Stan Carter, Ray Carson and Robert (Bob) Salisbury from CAIRS Mechanical, a midsize HVAC contractor in Houston, Texas since 1987 that self performs piping and sheet metal installation, but does not have a fabrication facility. Robert Salisbury is the co-founder of ‘CAIRS Mechanical’, Stan was in charge of the control department and Ray is an independent programmer.

C-AIR-S Mechanical began work on Pro-Est HVAC sometime in 1996. The program was developed for their internal use. They needed a comprehensive, affordable and user friendly program and were unhappy with the simple spreadsheet program that they had and programs with digitizers were financially beyond their means. They quickly came to the conclusion about the need to develop own program. They initially wrote the program without the ability to calculate shop labor as they didn’t have a shop. At some point after they converted from DOS to Windows, they decided that they liked the program so much that they wanted to put it on the market. To do this effectively they needed the capability to estimate shop labor and ultimately added four versions of sheet metal estimating with the goal of making the program as flexible as possible. They also added more features and options to give it a more professional look and feel. They sold the first program in the year 2000 and since then have sold about 100 copies which puts our efforts more into the category of a hobby than a job.

In 2009 Ray stopped working on the program and as Robert Salisbury wanted to carry on further enhancements in the program, he hired Mithun Baphana, a graduate student at USC, as a summer intern to work on some upgrades. That worked out well and when Mithun graduated in August of 2010 with master’s degree in electrical engineering from USC, he joined Professional Estimating Systems to help transition the company to a full time HVAC software business.

Right now we’ve got a lot of things going on. The program as currently written doesn’t work on Vista or Windows 7 so we’re porting it over to a new platform. We’re confident that our innovative software with additional enhancements and more products will establish us as the premier software for our targeted market.

 
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