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The HVAC Industry's most complete reference for replacement sales
Prestons Guide lists original manufacturer hvac specifications for air conditioners, heat pumps, gas, oil furnaces by model with factory ratings for capacity and efficiency.
Calculate the energy savings your replacement hvac units will provide
Prestons Guide is the only reference of its kind in the hvac industry
Find original factory ratings for efficiency and capacity on old equipmenl
Condensers listed up to 10-tons including commercial rooftop units
Models of 205 makes of gas and oil furnaces
1965-2005
Determine approximate age of old hvac equipment
Independently published
(without manufacturer affiliation) supports a much more credible presentation by any hvac contractor
Models of 240 makes of air conditioners and heat pumps
1960-2005
Now updated database of historical hvac specs through 2005
as a Printed Book
also available gas and oil residential boilers
1996-2005
CD-ROM
Updates for your old CD-ROM are also available
On-Line via the InterNet, our database is now available to you by subscription
its fast and easy
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