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It is quite likely that you have already used some of our software!
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1981
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Carrier Corporation purchases Don Sleeth's Residential Energy Analysis program. It
ran on Radio Shack computers. IBM was not yet in the Personal Computer market!
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1982
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Don Sleeth, having been an HVAC Contractor for 12 years, leaves to devote his full attention to his new company
HVAC Computer Systems Ltd.. The success of his computer programs is a direct result of his complete
knowledge of what a contractor is and needs. He is a Contractor first, programmer second.
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1982
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York Canada introduces the York SmartChart. This handheld Computer/Printer becomes the hit of
the spring marketing tour.
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1983
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York Borg-Warner introduces the York SmartChart throughout the U.S. and adds a Manual J sixth edition Residential Load
Calculation program. These programs, written by Don Sleeth president of HVAC Computer Systems Ltd. set the standard for
ease of use.
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1984
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Rheem and Ruud contract with HVAC Computer Systems to offer a customized version to their
dealers through a volume awards program. Demand is so strong
that the programs are soon offered for direct purchase through their extensive distributor network.
The system is sold under Rheem The Master and RUUD The Facts trade names.
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1985
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HVAC-Calc version 1 is offered directly to contractors by HVAC Computer Systems Ltd. |
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1987
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Lennox Industries Inc. contracts with HVAC Computer to develop a second generation of computer programs
for the handheld system. They are marketed as the Lennox Logic Jr II.
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1989
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Armstrong Air Conditioning Inc introduces the Armstrong Analyzer, again a customized version of Don's easy to use
computer programs for HVAC Contractors.
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1990
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HVAC-Calc version 2 is offered directly to contractors by HVAC Computer Systems Ltd.
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1997
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HVAC-Calc version 3, operating on the Win95 or Windows NT Platform is introduced. Building on
28 years of HVAC experience, this easy to use Residential Load program again
sets the standard for Ease of Use and Speed.
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1998
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HVAC-Calc Commercial 4.0 is introduced, bringing the same "Contractor Friendly" theme to the commercial load
field. Both programs are built to be compatible with all Microsoft Windows systems including the proposed 32 bit operating systems of the future.
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2000
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HVAC-Calc Residential 4.0 is introduced. This version adds the ability to copy jobs from one computer to another
and represents a solid platform upon which we can add new features as time goes on.
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2000
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Don recognizes the need for HVAC contractors to have a place to get together in Cyberspace
and learn and help each other. He starts an online community, HVAC-Talk.
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2001
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With the growing popularity of the Internet, more and more Home Owners are downloading
HVAC-Calc Residential 4.0 and are asking for a less expensive "Home Owner" license. With
the ease of use of this program and the clear instruction manual that is included, home owners
want to calculate their own loads. HVAC Computer Systems introduces a $49 two month
license for non-profit use by individuals to do their own homes.
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2001 to 2007
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In keeping with Don's roots in the HVAC business and the "Contractor Friendly" code we follow,
over 80 updates and additions to the programs have been made, all available for free to our
customers.
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2007
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More free updates to add requested features and to ensure program compatibility
with the new Microsoft Vista operating system.
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Questions? For More Info, Call
1 888 736-1101
Toll Free!
10:00 a.m. to 8:00 p.m 7 days/week
Table of Contents
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