HVAC Know It All is a free education and reference Android app developed by HVAC Know It All. It is a community of professionals in the HVAC/R industry who aim to enhance their skills in the field. The app is designed to help technicians, installers, company owners, educators, and students to become better in their respective roles.

The app provides a platform for users to participate in educational discussions, ask questions, and share their knowledge with others. The user-friendly interface and the availability of a wide range of topics make it easy for users to find relevant information. HVAC Know It All also offers podcasts and blog posts related to the HVAC/R industry, which can be accessed through the app.