Heating, Ventilation, and Air Conditioning (HVAC)

Tests.com offers practice tests with questions that are similar to those you might see on the EPA Section 608 certification exam. Use the links in the top menu to view more resources on this site.

Video study guides for North American Technician Excellence (NATE) certification on the website of Arizona-based HVAC service contractor American Heating and Cooling.

HVAC Terms Flashcards and other study resources.

Superheat & Delta T Calculator, Voltage Imbalance Calculator, Nitrogen Pressure Calculator, Under Load Capacitor Test Calculator, Air Density Calculator, Recovery Tank Fill Calculator, and Additional Charge Weight Calculator.

A collection of calculators that were made with HVAC maintenance and support in mind, including a Three Phase Voltage Imbalance Calculator.

Technical videos, interactive calculators, technical charts, and tech tips are available here for free from Coburn Supply Company.

A large amount of Air Conditioning and Refrigeration Training Videos and other learning resources can be found here for free.

A collection of links to other resources, guides, phone apps, and podcasts pertaining to HVAC.

Free HVAC resources, including free HVAC training courses, HVAC podcasts, and free HVAC training online.

Free learning resources to supplement your HVAC training.