Where To Stream Grand Designs Season 21 Episode 4
Bletchley Self-Heating House
- Aired January 27, 2021
- 60 Min
- Rated 8.5
- Number 16 Of 90 Rated Episodes
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?