Ask This Old House - watch online: streaming, buy or rent
Currently you are able to watch "Ask This Old House" streaming on Amazon Prime Video, Amazon Prime Video with Ads, Howdy Amazon Channel, Philo, YouTube TV, Thirteen, WETA+ or for free with ads on The Roku Channel, Pluto TV, Amazon Prime Video Free with Ads. It is also possible to buy "Ask This Old House" as download on Apple TV Store, Amazon Video.
Besides streaming, you can also buy the series on DVD from Amazon DVD / Blu-ray and watch it anytime.
You can also stream the title for free on WETA+.
