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Includes study guide*, seminar, and test.

* Study guide to be picked up from our branch in advance to allow time for test preparation.

Candidates for this exam can be certified in any of three equipment categories plus Universal.

Core– General Information Must pass for any type of certification

Type 1 Small appliances, i.e. PTACs and window ACs

Type 2 Equipment using high pressure refrigerant, i.e. Residential ACs and heat pumps

Type 3 Equipment using low pressure refrigerant, i.e. chillers

Universal Any candidate passing all three Types, including Core

 Note: Additional tests and retests will have additional charges. 

EPA testing 5-12-26

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NATE Testing: On demand

with Vince Feldman

June 30th, 2026

$165 More Info

In person NATE certification testing (Proxy Only). 

Students are responsible for purchasing training materials and studying prior to the test date.  No review will be offered prior to the start of the test.  Materials can be purchased at https://natex.org/shop.

For more information on NATE certification visit https://natex.org/ 

Tests offered are:
NATE Core
Gas Furnace
Heat Pump
CHP-5

For NATE testing options please inquire with Vince at vfeldman@corkensteel.com and include your full name, email address and which test you will be taking.

Cost of core and specialty test is $165.00.  Each additional test is $165.00 including retesting. CHP-5 is $80.00 per test including retesting. 

Laptop recommended but not required.

Online registration unavailable
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Inverter Technology: Online (no CEUs)

with John Ogle

June 25th, 2026

Free More Info

This class will cover:
• New inverter A/C and heat pump systems
• Proper installation and service procedures
• New controls used in inverter units
• 454b review and updates

Login instructions will be emailed prior to class

 

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Who Should Attend:
Employees and subcontractors of LG Representatives and Distribution Partners who will be performing field installations of LG ductless systems.

Course Overview – What You’ll Learn:
This training covers the manufacturer’s guidelines for installing piping and wiring systems associated with LG Duct-Free Split (DFS) indoor and outdoor air conditioning units.

How You’ll Learn:
The session begins with a brief introduction to LG inverter technology, followed by detailed lectures focused on system installation—with a strong emphasis on piping and control wiring best practices. Instruction will be delivered through PowerPoint presentations, group discussions, and hands-on lab activities. In the lab, participants will be introduced to LGMV Mobile, LG’s performance evaluation tool, which is essential for assessing system operation prior to startup. Charging procedures and pre-commissioning tasks will also be addressed.

Prerequisites:

  1. Advanced technical knowledge of residential A/C, heat pump, and air distribution systems
  2. Basic proficiency in Microsoft Office programs, including Excel, PowerPoint, and Word

What to Bring:

  • A laptop or PC with a web browser 
  • Students who wish to have LGMV installed on their device should ensure their system meets compatibility requirements

Registration: Participants must register at https://lghvac.com/training/ to receive LG Pro Dealer credit and a certificate of completion.

Extras: Refreshments and lunch will be provided.

Class approved for 4 CE hours KY Masters/Journeyman, 4 CE hours OH, 4 CE hours Vanderburg Co, IN Masters, and NATE CE hours. Per state rules, repeat courses do not qualify for accumulative credits. Each class must be unique. i.e. Taking (2) Heat Pump Classes only qualifies for 4 CE hours total, whereas (1) Inverter Technology Class & (1) Heat Pump Class = 8 CE hours

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AC Startup & Service: Indianapolis Downtown

with Eric Richardson

April 21st, 2026

Free More Info

This class covers:

  • Proper setup of an AC unit
  • Airflow and proper charging of the units
  • Current regional SEER regulations
  • Superheat and supercool charging and setup of variable speed motors
  • 454B refrigeration and equipment review and update

Refreshments provided

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MaxiPro product demonstration

with Factory Representative

March 25th, 2026

Free More Info

MaxiPro is an innovative press fitting, which is quick and simple to use, providing a secure and permanent joint. Compared with traditional techniques it significantly improves productivity through greatly reduced installation time and enhanced working flexibility. MaxiPro is revolutionizing pipe jointing in air-conditioning and refrigeration applications.

The training will cover the following:
• MaxiPro ACR Press product and installation revie
• Future of Press in our industry
• Tools to make the install easy

Refreshments provided

Stop by the counter day table after training for more hands-on interaction with the products. Counter day table will be avaliable from 10:00-1:00 pm in the showroom. 

Maxipro Richmond 3-25-26

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AC Startup & Service: Florence

with Eric Richardson

May 20th, 2026

$75 More Info

This class covers:
• Proper setup of an AC unit
• Airflow and proper charging of the units
• Current regional SEER regulations
• Superheat and supercool charging and setup of variable speed motors

Refreshments/dinner provided

Class approved for 4 CE hours KY Masters/Journeyman, 4 CE hours OH, 4 CE hours Vanderburg Co, IN Masters, and NATE CE hours. Per state rules, repeat courses do not qualify for accumulative credits. Each class must be unique. i.e. Taking (2) Heat Pump Classes only qualifies for 4 CE hours total, whereas (1) Inverter Technology Class & (1) Heat Pump Class = 8 CE hours

 

 

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Inverter Technology: Evansville, IN

with Eric Richardson

April 23rd, 2026

$75 More Info

This class will cover:

  • New inverter A/C and heat pump systems
  • Proper installation and service procedures
  • New controls used in inverter units
  • 454B refrigeration and equipment update and review
  • The new Variable Speed A/C and Heat Pump units
  • The proper installation, service and set up of the units
  • The new controls used in the Variable speed equipment
  • The Service and set up of the 5 stage Inverter units

Class approved for 4 CE hours KY Masters/Journeyman, and 4 CE hours Vanderburg Co, IN Masters. Per state rules, repeat courses do not qualify for accumulative credits. Each class must be unique. i.e. Taking (2) Heat Pump Classes only qualifies for 4 CE hours total, whereas (1) Inverter Technology Class & (1) Heat Pump Class = 8 CE hours

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Ion Zoning: Florence, KY

with Eric Richardson

March 31st, 2026

$75 More Info

Learn about Tempstar's zoning smart sensor in the Ion System. The smart sensor provides homeowners with a wall control featuring an attractive design, with the ability to control an individual zone in the home's Ion zoning system.

This class will be all hands-on installation wiring and operation of the zoning equipment.

Please bring field hand tools

2 elite hours (class does not offer NATE or KY/OH CE hours)

Ion Zoning 3-31-26

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AC Startup & Service: Florence

with Eric Richardson

March 18th, 2026

$75 More Info

This class covers:
• Proper setup of an AC unit
• Airflow and proper charging of the units
• Current regional SEER regulations
• Superheat and supercool charging and setup of variable speed motors

Refreshments/dinner provided

Class approved for 4 CE hours KY Masters/Journeyman, 4 CE hours OH, 4 CE hours Vanderburg Co, IN Masters, and NATE CE hours. Per state rules, repeat courses do not qualify for accumulative credits. Each class must be unique. i.e. Taking (2) Heat Pump Classes only qualifies for 4 CE hours total, whereas (1) Inverter Technology Class & (1) Heat Pump Class = 8 CE hours