Tech Fundamentals
Building Qualified Techs
From the Ground Up
4 week course
Week 1
HVAC Electrical
Students will start at the very basics of electricity and electrical theory, then will move into the lab to wire various circuits in a hands-on setting. We will then move into electrical troubleshooting with an emphasis on order of operations.
Week 2
Gas Heating Fundamentals
Students will start at the very basics of heating to get comfortable with each component, their function, and how they work together to form a functioning heating system. We will then transition into troubleshooting and maintenance best practices of a furnace. Troubleshooting will be emphasized in a hands-on lab setting.
Certifications offered:
HVAC Excellence Gas Heating Certification
Week 3
Air Conditioning Fundamentals
Students will start by learning about the refrigeration cycle and the basics of an A/C system. We will then transition into troubleshooting and maintenance best practices of an A/C system. Troubleshooting will be emphasized in a hands-on lab setting.
Certifications offered:
EPA 608 Certification
EPA A2L Certification
Week 4
HVAC Installation Best Practices
Students will learn best practices for installation of a complete split HVAC system. Students will go through an entire change-out scenario in our lab, then commission and start up the entire HVAC system. Duct sizing best practices of how to put together square and round ducting, how to build a plenum/transition. Certifications offered:
HVAC Excellence Recovery
Evacuation
Brazing Certifications
Upcoming Sessions

Sep 08, 2026, 8:00 AM CDT – Sep 18, 2026, 4:30 PM CDTJohnstone Supply- De Pere, 715 N Eighth St, De Pere, WI 54115, USA
Sep 08, 2026, 8:00 AM CDT – Oct 02, 2026, 4:00 PM CDTJohnstone Supply Training Center, 221 S Franklin Ave, Sioux Falls, SD 57103, USA
Sep 14, 2026, 8:00 AM CDT – Oct 09, 2026, 4:00 PM CDTJohnstone Supply, 802 Main Ave W, West Fargo, ND 58078, USA
Sep 21, 2026, 8:00 AM MDT – Oct 16, 2026, 4:00 PM MDTRapid City, 1962 Deadwood Ave, Rapid City, SD 57702, USA
Sep 28, 2026, 12:00 PM CDT – Oct 23, 2026, 5:00 PM CDTJohnstone Supply, 2420 W 4th St, Appleton, WI 54914, USA
Oct 05, 2026, 8:00 AM CDT – Oct 16, 2026, 4:00 PM CDTJohnstone Supply Training Center, 221 S Franklin Ave, Sioux Falls, SD 57103, USA
Oct 12, 2026, 12:00 PM CDT – Nov 06, 2026, 5:00 PM CSTJohnstone Supply, 1401 Cunningham Dr, Sioux City, IA 51106, USA- Oct 26, 2026, 12:00 PM MDT – Nov 20, 2026, 5:00 PM MSTRapid City, 1962 Deadwood Ave, Rapid City, SD 57702, USA

Oct 26, 2026, 12:00 PM MDT – Nov 20, 2026, 5:00 PM MSTJohnstone Supply, 3100 E Yellowstone Hwy, Casper, WY 82609, USA
Oct 26, 2026, 12:00 PM MDT – Nov 20, 2026, 5:00 PM MSTJohnstone Supply, 3100 E Yellowstone Hwy, Casper, WY 82609, USA