Technical Reference Guide

Technical Reference Guide

$79.00

This pocket field guide tells you the age and capacity of hundreds of home heating and cooling systems.

We are temporarily sold out. However, the new 2018 edition of the TRG will be available the first week of January 2018. Please check back later.

Out of stock

Product Description

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.

Additional Information

Weight 1 lbs
Dimensions 10 x 10 x 2 in