Passive House certified


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Passive House

Dear Reader,

A personal announcement this month, combined with some science: We built our house here in Colorado Springs, and just got it certified as a Passive House, the first one in Colorado Springs and 8th in the state.

What's a Passive House? It's a concept that is better-known in Europe, but making inroads in the US. I usually explain it as a way to make a building extremely energy-efficient, with three fundamental elements:

  1. Super-insulated: our external walls are about 12" thick, packed with wool insulation, and the windows are all triple-paned
  2. Air-tight: we were extra careful during construction to avoid unnecessary penetrations and closing up possible gaps, e.g. sealing between plywood sheets on the floor. Doors and windows are ringed with mechanisms that seal tightly shut.
  3. Continuous ventilation: fresh air is constantly brought in through a Heat Recovery Ventilator (HRV), which exchanges heat between the air going out and the air coming in, with >90% efficiency.

The result of all that is a house that doesn't need a furnace or air conditioner (i.e., no active heating or cooling, hence the "passive" label), relying on the sun to warm the house and the insulation to keep it warm at night. For example: it's currently below freezing overnight and 40's during the day, and our inside temp stays above 65F overnight, rising to 75F during the day when the Colorado sun fills our living room.

What's Rick Reading Now?

I learned about this book, Dissolution, when I listened to a podcast interviewing the author, Nicholas Binge, about his use of Scrivener, a writing tool I also use. It's a fascinating story focused on how fundamental memory is to who we are, weaving back and forth between an elderly woman recording her enhanced memories of her husband (afflicted with Alzheimer's), and her husband's early life researching groundbreaking improvements in human memorization. There's a shadowy organization lurking in the background, providing tension and a "what's really going on?" question for the reader. Highly recommended!

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A housekeeping note: I changed over to a new email address this month, since I learned that using a gmail address can get my newsletters stuffed into junk folders. So the new address is rick@rickaallensf.com. You may want to add that to your contact list to ensure future newsletters don't end up in your junk folder.

Happy Reading!

Rick A. Allen

The Star Riders series:

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Copyright 2026 by Rick A. Allen, all rights reserved

613 Columbia Court, Colorado Springs, CO 80904

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Rick A. Allen

A little about me: I'm an older guy who grew up reading great science fiction by such masters as Isaac Asimov, Larry Niven, Arthur C. Clarke, Robert Heinlein, Clifford Simak, and Robert Heinlein. My favorite current authors are Neal Stephenson and Alastair Reynolds. I started writing a few years ago to try to create a book (and now series) that I think my younger self would have loved to read. Hopefully you will, too! And if you have any comments, I promise to always read your emails to me, and provide a response. I love hearing from my readers!

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