Plumbing and heating expert Richard Trethewey heads to Tampa, Florida, to help a homeowner cool off his garage workshop with a ductless air conditioning system. Richard, along with landscape contractor Roger Cook, host Kevin O'Connor, and general contractor Tom Silva ask, "What is it?" Tom helps a homeowner eliminate a mysterious leak in her living room ceiling.
Click here to SUBSCRIBE to the official This Old House YouTube channel:
Watch the Ask This Old House Season 8 playlist: