Commercial Refrigeration Controls

REF 202 is a focused refrigeration-controls class for students who already have a basic HVAC foundation and want sharper commercial wiring and controls skills, especially on walk-in coolers, freezers, and low-temp equipment.

The course connects wiring diagrams, sequence of operation, and hands-on troubleshooting on real commercial components so you can step confidently onto a service call at the grocery store, restaurant, or cold storage customer.

• Tracing refrigeration controls through wiring diagrams and sequence of operation.
• Understanding accessories, valves, and control components used in walk-in equipment.
• Connecting electrical troubleshooting to product temperature and system performance.
• Building confidence with commercial refrigeration logic beyond basic residential service.

Students who already understand core HVAC concepts and want to expand into commercial refrigeration controls, or residential techs taking on grocery and restaurant service work.

Prerequisite: ACHP 105 or equivalent field experience. If you’re not sure whether you’re ready, call the office and we’ll help you figure out the right sequence.

• Fluke 116 VOM multimeter
• Standard hand tools (screwdrivers, nut drivers, pliers)
• Manifold gauge set (recommended)

Lab materials and reference diagrams are provided. Call if you have questions about what to bring.

• Course code: REF 202
• Format: Short course, runs when interest is confirmed
• Typical audience: Intermediate students and working techs
• Location: Brier, WA campus

Because REF 202 runs by request, call the office and we’ll line you up for the next posted cohort date.

• Tuition: $495, materials included
• $100 deposit holds your seat (refundable within 5 business days of signing)
• $395 balance due on day one
• Prerequisite: ACHP 105 or equivalent field experience

REF 202 runs by request when enough techs are lined up. Call to request a date and we’ll confirm your seat once the next section is scheduled.