null

Download the TruTech Tools App!

Faster ordering, easier tracking, and be the first to know about exclusive offers. 90+ brands in your pocket. Learn More about the TruTech Tools app

Download on the App Store Get it on Google Play
TTT Free Downloads

TTT Free Downloads

Access a growing library of free HVAC resources designed to help you work faster and make better decisions in the field. From combustion analysis guides and static pressure testing to troubleshooting worksheets and reference charts, these downloads are built for real-world use by technicians.
 
Whether you are verifying system performance, diagnosing issues, or brushing up on best practices, these tools give you quick access to the information you need. Download PDFs, check sheets, and technical references you can use on the job or keep on hand for future work.
A Guide to Combustion Analyzers by TruTech Tools

A Guide to Combustion Analyzers 2025 Edition by TruTech Tools

This free guide written by Eric Kaiser explains how to properly perform combustion testing in homes etc.

Diagram illustrating testing TESP on an air handler with labeled components.

Total External Static Pressure Testing Guide

This free guide details how to perform TESP (Total External Static Pressure) testing on different systems and the best tools to use.

Chart of enthalpy numbers

Enthalpy Chart in BTU per Pound of Dry Air

This free enthalpy reference chart goes down to the tenths of a degree fahrenheit based on ASHRAE data.

Quick chart for rectangular duct traverse measurements and calculations.

Quick Chart for Rectangular Duct Traverse

This free chart details the size requirements for traversing different types of rectangular ducts.

AC Performance Worksheet with fields for contractor and performance data.

A/C Commissioning Test Worksheet

Fill out this A/C performance worksheet and use the equations to calculate the expected system performance.

A/C Heat Pump System Troubleshooting Guide with system problems and solutions.

A/C Heat Pump System Troubleshooting Guide

A general guide to troubleshooting A/C heat pump systems.

Document on verifying air flow and nominal efficiency calculations.

Charge and Airlflow Check Sheet

Fill out this airflow verification sheet and use the equations to calculate the expected airflow in CFM.

Image of a person analyzing combustion data on a device, with graphs below.

A Guide to Combustion Analyzers 2007/2010 Edition by TruTech Tools

This free guide written by Jim Bergmann explains how to properly perform combustion testing in homes etc.

Diagram explaining differential dimensions for measuring copper tubing.

Copper Tube Bending Diameter Chart

Learn the process of measuring for inside (I) or outside (O) dimensions and finding the die-center of copper tubing.

Image of a timeline and illustrations related to building science.

The Building "Science" Timeline

An illustrative look back through the history of building science and how we arrived at todays standards.

Refrigerant recovery cylinder fill calculation tool instructions and data table.

Refrigerant Recovery Cylinder Fill Calculation Tool

Designed to make calculating how much refrigerant will fill a recovery cylinder to 80% of it's volume easy and fast for technicians in the field.

A letter from Metal-Fab Inc. regarding specifications and responsibilities.

Type-B Vent Combustion Test Port Information

Manufacturer guidance on safely adding and sealing test ports in Type B vent for combustion testing.

9th Apr 2025 TruTech Tools, Ltd.

Recent Posts