SEPTEMBER 2011
ASHI Reporter September 2011, Feature

Solving Jigsaw Puzzles in Four Dimensions

Excessive and improper use of flexible insulated plastic HVAC duct tubing quickly is becoming pandemic in the home-building industry. I regularly see HVAC systems that look like they were patterned after the villainous “Doctor Octopus” of the Spiderman movie.

By: C. Blaine Illingworth III read full article
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