Ask This Old House (2002)

S4E26 Mini-Split Air Conditioning System; De-Thatching a Lawn

Richard Trethewey, the plumbing and heating specialist, travels to a Kansas residence to assist in the installation of a mini-split air conditioning unit. Afterward, Richard teams up with general contractor Tom Silva, landscaping expert Roger Cook, and host Kevin O'Connor to tackle the question, "What is it?" In another segment, Roger aids a homeowner in revitalizing their lawn for spring by utilizing a de-thatching machine.