HVAC Resources

Explore our collection of useful charts, tables, and guides for HVAC professionals.

Guides & Charts

R-Value Charts

Understand insulation effectiveness with typical R-values per inch for common materials.

Refrigerant Properties

Basic properties of common refrigerants. Detailed data is crucial for system design and service.

Unit Conversion Factors

Quick reference for common HVAC unit conversions. Use our dedicated calculators for specific conversions.

Psychrometric Chart Basics

An introduction to reading and using psychrometric charts for air property analysis.

Code Compliance Guides

General overview of key HVAC-related codes and standards. Always consult current local codes.

Duct Size from CFM

A guide to sizing round vs. rectangular ducts using CFM and recommended FPM ranges.

How to Calculate CFM Per Room

An in-depth guide on calculating CFM per room using ACH and load calculation methods.

HVAC Troubleshooting Steps

A general guide to diagnosing common HVAC system problems before calling a professional.

Energy Efficiency Ratings

Understanding SEER, AFUE, HSPF, and EER for informed equipment selection.

Ductwork Design Principles

Fundamental concepts for designing efficient and effective air distribution systems.

Refrigeration Cycle Explained

An overview of the basic vapor-compression refrigeration cycle used in HVAC systems.