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Tech Experts Edition: In the Field – Serviceability of Two-Stage Systems

In this episode, we are joined by two experts, Bill Wireman and Chris Cantrell, from Logan A/C & Heat Services in Dayton, Ohio. We kick off the conversation discussing the serviceability of two-stage systems, then move to installation differences between two-stage and fixed or variable speed systems. We also discuss a basic checklist homeowners should do before having a technician service a unit.

Host: Lindsay Headings, Digital Marketing and Content Manager, Emerson
Co-Host: Brad Hess, Application Engineering Manager, Emerson


Bill Wireman, Field Service Supervisor, Logan A/C & Heat Services
Chris Cantrell, Service Manager, Logan A/C & Heat Services


  • 0:09 – Welcome
  • 0:44 – Installation differences between two-stage, fixed speed and variable speed system
  • 1:20 – Training for new technicians
  • 2:26 – Setup differences between a two-stage system vs variable speed system
  • 2:56 – Talking to a homeowner about the difference of operation between two-stage and single-stage
  • 4:52 – How thermostats work in two-stage systems
  • 5:30 – Typical issues and troubleshooting of two-stage systems
  • 8:46 – Benefits of a two-stage system
  • 10:27 – Thermostat installation for new two-stage systems
  • 11:12 – Typical issues received on service calls
  • 12:10 – What impact do new regulations have on serviceability
  • 13:12 – Advice for technicians

Learn more about Logan A/C & Heat Services:

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Previous Episode: The New Copeland™ Online Product Information Tool and Copeland™ Mobile App

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