BACK

#millivolt

Tech Tips:

For those of you who don't know, a millivolt system uses a thermocouple/thermopile with a standing (constant) pilot flame to generate a tiny “millivolt” signal used to control the furnace rather than the 24v signal modern thermostats use. There's still a ton of millivolt furnaces out there, and many of the owners want the new […]

Stewart castro
#millivolt #smart thermostat

Check out our most recent video

How to Evacuate an AC system, Full Vacuum Procedure

Our latest Podcast

HVAC School – For Techs, By Techs

Real training for HVAC ( Heating, Ventilation, Air Conditioning and Refrigeration) Technicians. Including recorded tech training, interviews, diagnostics and general conversations about the trade.

In this episode, Bryan Orr sits down with Ty Branaman for a wide-ranging conversation about what it really takes to be a good on-call technician. They open by reminiscing about how dispatch technology has evolved over their careers — from pagers, radio codes, and outdated paper map books to MapQuest, early GPS units, and today’s 24-hour dispatch systems. That trip down memory lane sets up the episode’s central theme: while the tools have changed, the mindset needed to succeed on call has not. Both hosts agree that being on call can be genuinely enjoyable when a technician learns to embrace the autonomy, the bigger paychecks, and the quieter, less stressful roads that come with nights and weekends.

A major thread running through the discussion is self-discipline and long-term thinking. Bryan and Ty encourage younger techs to treat on-call money as an opportunity rather than spending cash — saving and investing overtime pay instead of financing trucks, boats, or other lifestyle upgrades. They share stories about the financial traps of seasonal trade work, the value of staying in a consistent routine even at 2 a.m., and how cutting corners under fatigue is often what leads to injuries or callbacks. Ty compares a disciplined on-call tech to a pilot running through a pre-flight checklist: the process matters just as much in the middle of the night as it does at noon.

The conversation also digs into customer relationships and judgment calls in the field. They talk candidly about the difference between genuine emergencies and entitled or overblown complaints, and how companies that over-market “24/7 service” can create unrealistic customer expectations. Bryan shares a story about temporarily misting a struggling condenser to get an elderly client through a brutal heat wave, using it to illustrate the kind of judgment-based, get-them-by fix that defines old-school on-call work — as opposed to always pushing for a full sale. Safety boundaries, cutting corners responsibly, and the excitement of solving unpredictable problems on the fly are all discussed as part of what makes the work rewarding despite its challenges.

Finally, Bryan and Ty turn to advice for company owners and service managers. They emphasize building fair, well-communicated on-call rotations, respecting technicians’ personal time, and charging appropriately for after-hours work so that both customers and technicians value it. Ty argues that the industry needs to reframe HVAC work as a skilled trade rather than commodity labor, and that companies should be careful not to chase more emergency calls than their technician pool can sustainably handle. The episode closes with reflections on career growth, mentorship, and the kindness that comes from helping teammates cover on-call shifts for one another.

Topics Covered

The evolution of dispatch: pagers, radio 10-codes, paper map books, and early GPS
Why on-call work can be enjoyable: autonomy, higher pay, and quieter roads
The hardest part of on-call: getting called back out after coming home
Customer expectations, entitlement, and the impact of “24/7 service” marketing
Saving and investing on-call earnings instead of overspending on trucks and boats
Staying in routine and following checklists even late at night to avoid callbacks
Sleep, hydration, and avoiding excess caffeine while working on-call shifts
Judgment calls and temporary fixes to get customers through emergencies safely
Knowing your personal safety and ethical limits when cutting corners
Career paths with less on-call demand: maintenance roles, installation, stationary engineering
Reframing HVAC service as a skilled trade rather than commodity labor
Building fair, well-communicated on-call rotations to prevent technician burnout
Mentorship, teamwork, and covering shifts for coworkers with families

Subscribe to Ty’s YouTube channel, @love2hvac.

Learn more about the work we’re doing with Ty at the GRIT Foundation at https://www.thegritfoundation.com/.

Have a question that you want us to answer on the podcast? Submit your questions at https://www.speakpipe.com/hvacschool

Purchase your tickets or learn more about the 8th Annual HVACR Training Symposium at https://hvacrschool.com/symposium.

Subscribe to our podcast on your iPhone or Android.

Subscribe to our YouTube channel.

Check out our handy calculators here or on the HVAC School Mobile App for Apple and Android.

Search Episodes

Tips for Being On Call w/ Ty

08/20/2026

Bryan Orr

The Florida “M-Word” – Legal Boundaries & Tech Communication – Short #299