WebsiteintermediateFree
hvac.com
Unknown
HVAC.com is a comprehensive guide to heating, cooling, and ventilation systems. It provides educational articles, how-to guides, troubleshooting tips, and product buying guides for furnaces, air conditioners, heat pumps, and other HVAC equipment.
More resources on Heating Systems
WebsiteFree
InspectAPedia Heating Section
Detailed free guides on all heating systems, often cited in Reddit
WebsiteFree
HVAC School
Free podcasts, articles, and videos for heating techs
WebsiteFree
HeatingHelp.com
Forum and articles by Dan Holohan, go-to for steam/hydronic pros
CourseFree
Introduction to Hydronic Heating
Learn hydronic heating basics! This course from HVAC School covers system components, operation, and maintenance.
CourseFree
HVAC Fundamentals
Learn HVAC fundamentals & heating systems with this free online course. Gain practical knowledge for a career in HVAC!
BookFree
Heating and Cooling of Buildings
Heating and Cooling of Buildings - A book resource