The Family Handyman on MSN5mon
Save Money by Insulating Crawl Space Ducts
The Residential Building Code calls for R-8 insulation for these ducts, but check with your building inspector for local code ...
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Lighter automotive air duct that reduces noise, enhances safety developed for commercial vehicles
Traditional air ducts, made from high-density polyethylene (HDPE), were heavy, had poor insulation, and resulted in significant heat loss. Additional issues included difficulty during assembly ...