Press Release

Oct 15, 1999

Don Sleeth, president of HVAC Computer Systems, today announced the release of
HVAC-Calc Residential 4.0, a computer program to calculate the size of furnace and
air conditioner needed in residential buildings. The HVAC-Calc programs were first
introduced in 1981 and have been a favorite with contractors ever since. Based on
industry standards, HVAC-Calc Residential 4.0 joins the current HVAC-Calc Commercial 4.0
as the easiest to use heat loss and heat gain calculation programs available. A feature of both
of these programs is easy sharing of jobs between the laptop computer, office computer and
home computer.

HVAC Computer Systems, based in Ottawa, Canada has embraced the new era of Internet based
businesses. Both programs are available in trial mode from the company web-site at
http://www.hvaccomputer.com. To complement their Internet presence, the company has a toll free
support line at 1-888-736-1101 which is manned by technicians 12 hours a day, 7 days a week.
It is this combination of new technology and old fashioned personal service that has made
HVAC Computer Systems a successful company in the contractor software industry
for almost 20 years.

HVAC Computer Systems Ltd.
403-B Echo Dr
Ottawa, Ontario
Canada K1S 1N5
1-888-736-1101

http://www.hvaccomputer.com

don@hvaccomputer.com

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