Grand Designs - Season 21 Episode 4
Energy conservationist Andrew plans to build a radical, self-heating home by storing the warmth of the summer sun into insulated earth banks. But will this gigantic thermal experiment work?
First Air Date : 1999-04-29
Last Air date : 2025-04-02
Runtime : 57 minutes
Genre : Documentary
Cast : Kevin McCloud
Crew :
Quality : 
Subtitles :
- Season 21 : Episode 12021-01-06
- Season 21 : Episode 22021-01-13
- Season 21 : Episode 32021-01-20
- Season 21 : Episode 42021-01-27
- Season 21 : Episode 52021-02-03
- Season 21 : Episode 62021-07-14
