Season 6 was released on DVD in 2013 (region 1). VOD has mostly replaced DVD sales, but some collectors note that DVD extras (detailed materials lists, expanded tool guides) are absent from digital purchases.
Richard Trethewey has several memorable segments this season regarding radiant heat and air conditioning maintenance. One notable episode features the installation of a ductless mini-split system—a technology that was gaining mainstream traction in the US around this time. Watching these episodes via VOD offers a retrospective on how home climate technology has evolved. ask this old house season 06 vodr