Through the wall units

Join us for a hands-on Through-the-Wall HVAC Training Class, hosted by Johnstone Supply in partnership with First Co. and NCP. This class is designed for HVAC contractors and technicians looking to sharpen their knowledge of through-the-wall systems—ideal for multi-family housing, condos, and light commercial applications.

Attendees will gain valuable insights into proper installation techniques, unit selection, servicing, and troubleshooting. Experts from First Co. and NCP will be on-site to provide guidance, showcase products, and answer field questions.

Whether you're installing for the first time or want to refresh your skills, this class will help you improve job performance, reduce callbacks, and confidently recommend the right products for your customers.

What This Class Covers:

• Introduction to Through-the-Wall HVAC systems
• Proper installation techniques
• Sizing and application best practices
• Troubleshooting and servicing units
• Product lineup from First Co. and supply support from NCP

Why You Should Attend:

✅ Learn from manufacturer experts✅ Improve your service and install confidence✅ Hands-on product review✅ Get answers to your field questions

☕ Meal and refeshments will be provided!

This is a fantastic opportunity to sharpen your skills and stay ahead in the HVAC industry. Purchase your tickets today and join us for this informative event!

Where to park for Crestwood classes

Please park in any available spot behind the building or along the east side, parallel to the building.Do not park at the old location or in front of 4611/4621 138th St.

Refund requests must be made at least 7 days before the class. This allows us time to fill the spot you reserved.

Missed classes cannot be transferred to a future class, and failure to attend will result in forfeiture of your funds.