Get the Most Out ofYour HVAC Training

Evaluate, align, and develop your talent with the Lennox U™ workbook.


BuildATech® in Spanish

World-class foundational HVAC training now in Spanish!


Over 400 Online HVAC Coursesat Your Fingertips

Access our industry-leading courses from anywhere.


Call 1-800-654-3283 (option 2)

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Expert HVAC instructors

Together, our instructors have over 150 years of experience teaching in the HVAC industry.

Flexible schedule

We offer online and instructor-led training to fit your schedule and learning needs.

HVAC training anytime, anywhere

Our online courses are available 24/7/365, and we offer instructor-led classes in 33 district offices.

Featured HVAC Courses

Technical, sales and business training in a classroom setting, led by experienced instructors who are dedicated to helping you succeed in your HVAC career.

Access My Learning

Ready to learn? Quickly access over 500 learning assets immediately! Click below to explore our HVAC online learning center.

Ready to take the next step in your career?


I want to tell you what an awesome program BuildATech® is. My nineteen-year-old son went through it last March and he’s performing like a star.

Keith Saunders

Aire Serv Heating and Cooling, Waco, TX


As an AC novice, I came into this class with only the most basic understanding of how an air conditioner works. Working with the team at Lennox, I now feel confident and proficient as an HVAC professional.

Gregory Snavely

Mr. Fireplace Patio & Spa, Melbourne, FL


Learning the how/why of the system was a big help. Knowing the science and processes involved make understanding set up and troubleshooting much easier.

Alex Keedy

Peter Levi Plumbing, San Rafael, CA

Choose Your Curriculum

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Nothing creates repeat customers quite like techs who inspire their confidence and trust. Our online HVAC training provides technicians and installers with advanced knowledge and skills to grow their careers.

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The best salespeople never stop learning. HVAC is a tough market, and today’s tech-savvy homeowners are more educated and informed than ever before. But that’s a good thing, as long as your Comfort Advisors know their stuff.

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Business Leaders

Every good leader knows that learning is a lifelong process. Training and education are investments that pay dividends and separate good HVAC companies from great ones.

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Customer Service

The best way to “wow” homeowners and earn their loyalty is to make them your focus. Even when you’re booked solid or dealing with a “tough customer,” you can still create an awesome customer experience.