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Aug 17
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The State of Program Evaluation and Tips for Picking Good Evaluation Practitioners

By Energy Efficiency, Energy Rant One Comment
This post is brought to you by the International Energy Program Evaluation Conference (IEPEC), circa 19, er 2015.  I moderated one session featuring four great papers and presentations concerning residential space heating and cooling.  I also observed one concurrent session for nearly all the timeslots in the conference.  The theme I found, which was very pleasing to me, is that doing useful research and evaluation is challenging and expensive. The reason it pleases me is that, well, getting things right is everything, but it also levels the playing field.  I hate losing bids, but it is less painful to lose…
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Apr 20
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Duct Leakage; The Results Are In

By Energy Efficiency, Energy Rant 5 Comments
About two years ago, I wrote Duct Leakage Chaff, which explained that residential duct leakage is a mole hill, a red herring, a boogeyman.  I recently reviewed a report that nails my assertions from June 2013. The program evaluation (residential HVAC tune-up) was thorough, likely expensive, but worthwhile.  Too often, not just in evaluation, but any professional service industry, contracts go to the low-ball bidder.  The low-ball bidder either uses the tactic because it’s the only weapon they have, they don’t understand the challenge of doing a decent job (ignorance), or providing actionable value simply isn’t that important to them.The…
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Jun 10
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Duct Leakage Chaff

By Energy Efficiency, Energy Rant 3 Comments
Due to duct leakage, only 57% of heat generated in a home furnace is delivered to conditioned spaces.  OMG!  Run for your lives.  Big deal. I have overheard conversations at conferences and other networking gigs that include statements like, “We are so focused on envelope tightness, insulation, energy-saving windows, and efficient appliances, but meanwhile we are wasting almost half the heat produced in an energy efficient furnace.”  Not so fast. In mechanical engineering, we have the first and second laws of thermodynamics.  The first law is like a change machine – conservation of money.  Put a piece of cotton-infused paper…
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All things energy. That’s our jam.

We talk a lot about energy – from the serious to the satirical.

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