4-th episode of 21-th season "Grand Designs"

What "Grand Designs" 4-th episode about

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?.

Episode number: 4

Episode name: "Bletchley: Self-Heating House"

Episode release date: 27 january 2021 at 21:00

Status: aired

Rating: 7.5