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Ask This Old House – Season 7, Episode 23: Full Cast & Crew Aired Feb 28, 2009 House & Garden/Special Interest
Plumbing and heating expert Richard Trethewey helps a California homeowner install a new type of zoning control for her forced-air heating and cooling system; What is it?; Tom helps a homeowner re-grout the tile floor in her master bathroom. TV-G Air Date: Feb 28, 2009 See TV Episode Details

Cast & Crew

All Cast Crew
Kevin O'Connor Host Tom Silva Self Richard Trethewey Self Roger Cook Self