rooftop units Archives - Michaels Energy

Aug 20

Efficiency at ACEEE – Something New, Something New

By Jeff Ihnen Energy Rant No Comments

Last week, I participated in ACEEE’s Summer Study for Buildings in Pacific Grove. This week’s Rant features themes of our industry’s direction as described by the hundreds of papers presented at the conference. Most of what I’ve been writing about in recent months is happening in many places. Hurray! EISApcolypse? Bring It! EISA (you say ee-suh, I say I-suh), otherwise known as the Energy Independence and Security Act, will in 2020 mandate the use of light emitting diodes as the standard for applications. While EISA may not mandate LEDs, or even mandate LED-level efficacy, the horse has left the barn.…

Dec 04

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Rooftop Units – Yesteryear’s Pool Brat Punks

By Jeff Ihnen Energy Rant One Comment

Last week several of us at Michaels bemoaned the hazards of operations and maintenance (O&M), controls, and behavioral programs. The specific discussion was about the ubiquitous rooftop unit, like those shown on the box-store roof below. The discussion could have been about anything other than light bulbs. Measures in a portfolio come with a spectrum of savings risk from baselines, to hours of use, to risks associated with operation once deployed. Next week I think I’ll analyze an entire portfolio of risks and give those risks relative scores. For instance, many measures depend on the baseline – not necessarily the…