Call 1-800-441-9411
8am-8pm M-F & 9am-1pm Sat CST
AHIT Home About AHIT Training Products & Reports Software Members Support Contact Us
Products & Reports
Featured Products

The Technical Reference Guide

Book $79.00

Buy Now!





NewTechnical Reference Guide

When you have a heating or cooling question, don’t guess!

The Technical Reference Guide decodes model numbers and serial numbers to help you make an accurate evaluation. This pocket guide tells you the age and capacity of hundreds of home and commercial heating and cooling systems.