Ask This Old House Hvac Zoning, Plaster Patch on Alabama Public Television
Alabama Public Television Education

Hvac Zoning, Plaster Patch

Rocket scientist turned HVAC innovator-watch Richard meet the man behind a new technology that could revolutionize the way we heat and cool homes. See Tom teach a homeowner how to use plaster to patch drywall. The guys ask, 'What is it?'

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