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Latest Articles

Musings of an Energy Nerd

Attaching Ducts to a Heat-Pump Water Heater

An increasing percentage of green builders are choosing to install heat-pump water heaters -- appliances that use an air-source heat pump to extract heat from the air, transferring that heat…

Building Science

Pete’s Puzzle: Not Your Run-of-the-Mill Moisture Problem

Taking a look at only the first three images in the photo gallery for this blog, can you guess what the contraption is (was) in the middle of the basement…

Green Building News

Two Startups Seek to Grow Interest in Foam Glass Fill

Two companies in the Northeast are seeking to expand the market for a lightweight, insulating fill made from recycled glass that can take the place of stone aggregate in several…

Article

Creating a World-Class Recycling System

This post originally appeared at Ensia. In a large open space overlooking central Taipei, Arthur Huang hands me a translucent, honeycomb-shaped polyethylene panel. Named Polli-Brick, this colorless module made from…

Guest Blogs

What Is ‘Green’ Dry Cleaning?

The winter holidays are a busy time for many businesses, including retail stores, grocers, liquor stores — and dry cleaners. People pull out special-occasion clothes made of silk, satin, or other…

Featured Blogs

Musings of an Energy Nerd

Contemplating residential energy use

January 18
Attaching Ducts to a Heat-Pump Water Heater
January 11
Installing Rigid Foam Above a Concrete Slab
January 4
‘I Can’t Find a Contractor to Do That’

Q&A Spotlight

An in-depth look at reader’s intriguing questions

January 7
Ventilation for a Very Small Home
December 24
Is a Ground-Source Heat Pump the Right Choice?
December 10
Designing an Air Barrier for a Timbered Cathedral Ceiling

Guest Blogs

Fresh perspectives from designers, builders, and industry experts

By Joy Onasch
What Is ‘Green’ Dry Cleaning?
By Matt Bath
Saving Sustainably: Plumbing Rough-In
By Eric Williams, Ashok Sekar, and Eric Hittinger
The Fine Print on Energy Efficiency

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Construction-detail Drawing Library

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A collection of one thousand construction details organized by climate and house part (roofs, walls, foundations, etc.). Each detail can be downloaded as a PDF for printing or as a DWG to incorporate into your CAD software.

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Musings of an Energy Nerd

Musings of an Energy Nerd

Energy-Smart Insight for Builders and Designers Martin Holladay’s new book, Musings of an Energy Nerd, is filled with the in-depth information that builders, designers, and homeowners need to make homes more energy-efficient.

Renovation 4th Edition

Insulate & Weatherize (EBook)

For Pros By Pros: Graphic Guide To Frame Construction

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