GC Library: Heating, Ventilation, Air Conditioning, and Refrigeration (HVAC-R): Open Access & Online Resources

Air Conditioning, Heating & Refrigeration News
The Air Conditioning, Heating and Refrigeration News is the HVACR contractor's weekly news magazine.
American Standard Heating & Air Conditioning
Glossary of Terms
Heating Ventilation Air Conditioning: HVAC
Highlights the latest advances in technology pertaining to the residential and commercial HVAC field (air conditioning and heating). For the general public as well as HVAC professionals.
HVACR Education
HVACReducation.net group provides a variety of comprehensive and training programs for students in the related fields of heating, ventilating and air conditioning.
HVAC Web Connection
A network of HVAC & Plumbing community websites for trade professionals.
National Fire Protection Association (NFPA)
NFPA delivers free online access to all NFPA standards to enhance public safety and to serve the public's increasing interest in technical information

Danfoss Free Cooling Courses
HVAC equipment manufacturer Danfoss offers free e-learning modules on introductory HVAC subjects.
HVAC Talk Forum
With a membership of more than 150,000 HVAC professionals and enthusiasts, HVAC Talk is a place to discuss study materials.
StudyStack HVAC Flashcards
StudyStack is a free study tool that aids in learning, memorization, and preparing for exams.
Test.com: EPA Practice Tests
Tests.com offers practice tests with questions that are similar to those you might see on the EPA Section 608 certification exam.

AHRI (Air-Conditioning, Heating, & Refrigeration Institute)
The Air-Conditioning, Heating, and Refrigeration Institute (AHRI) is the trade association representing manufacturers of HVACR and water heating equipment within the global industry.
ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers)
ASHRAE is a global society advancing human well-being through sustainable technology for the built environment. The Society and its members focus on building systems, energy efficiency, indoor air quality, refrigeration and sustainability within the industry.
RSES (Refrigeration Service Engineers Society)
RSES is a leader in training and education for professional HVACR technicians and contractors.
Women in HVAC
Women in HVAC, was organized exclusively for educational purposes to further the growth of women in all areas of the HVACR industry.