Caroline Hazard

Company name: CHH Consulting

Position: Principal

Caroline Hazard is the Principal at CHH Consulting. She has over 20 years of experience in researching, designing, and implementing sustainable energy programs and practices. Her recent projects have focused on the impact of HVAC monitoring tools to optimize occupant comfort and system performance.

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Technician Head Trash

It’s Friday at 6 PM. The schedule is clear, as far as you can tell. Other guys have been getting cleared right and left, so you call in standby. Five minutes pass. Ten minutes pass. You check in again, and sure as &%$#, there it is! You get sent across town to another call that […]

Why the New Guy Gets Fewer Callbacks

I was going through a recorded service meeting with the Kalos techs, and Bert shared something that has been rattling around in my head ever since. His team went digging through their callback data looking for patterns, and after stepping back and looking at it, one showed up that nobody expected: The newer techs were […]

Why is 240V called “Single-Phase”?

Why is it called single-phase 240 when there are two opposing phases (or legs)? I wondered why we called two 120v opposing legs “single-phase 240” for years. Then someone pointed out to me that a typical “single-phase” pole transformer only has one power leg entering and two coming out. That freaked me out. How can […]

The Devil is in the Data

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