This guide will help you identify, date and determine the size of residential and commercial heating and cooling systems, boilers and domestic water heaters, going back more than 40 years. With entries for more than 200 manufacturers, you will be able to provide your clients with the precise age and size of heating and air conditioning equipment.

There is also helpful information on determining the approximate adequacy of the units you are inspecting as well as complete contact information on who to contact for more details on the equipment.

This is the same guide created and used by CDW Engineering’s own engineers to date and size mechanical equipment. You too will find that this newly updated version will soon become an indispensable part of your toolkit.

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For further assistance, please call 416 964 3246 (toll free: 1 866 964 3246), or email