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Building Science Air-to-water heat pumps use water, not air, to deliver heat. They’re an emerging product we’re starting to see more often. Here’s how, and where, they work. By Jon Harrod | August 12, 2026 This article explores air-to-water (A2W) heat pumps, an emerging HVAC technology that combines the efficiency of heat pumps with the […]
Hi, thank you for any advice. Roof assembly: Bottom to top -1/2″ Sheetrock (Low Sag) – 2″ air gap – 2×10 purlins @ 24″ OC running perpendicular to roof slope w/ 7.25″ rockwool insulation R30 pushed up tight to underside of roof deck -1/2″ zip sheathing, tape all seams over to walls w/ Zip R6 […]
Background: I am about to build a new, two-story house, with a full height basement in the Roanoke, VA area (Bedford County – Climate Zone 4A – Mixed Humid). It will have a vented, unconditioned attic space, R49/R50 blown cellulose insulation, raised heel trusses, asphalt shingles, and composite wood (LP) lap-siding over OSB sheathing using […]
Green Building News Colorado-based RIC Robotics’ solution to scalability is simple: standardize everything By Justin R. Wolf | August 11, 2026 The industrial era of the early 20th century was defined by friction. Despite its many success stories, from the first radio receiver to the automobile, from stainless steel to the arc welder, the world […]
How Extreme Heat Demands Are Straining Electricity Infrastructure and Driving Policy Changes Extended summer heat waves create record peak electricity loads that severely degrade physical power infrastructure. By Jane Marsh August 11, 2026 Increasingly, extended heat events have shifted from occasional climate anomalies to regular seasonal challenges that test physical infrastructure, from primary power generation […]