Large windows and doors can aid passive cooling when externally shaded like this – HSL Ltd 2021 Published 27 September 2021 at 2048 × 1532 in How to design and build a new home in 2021 which stays cool in UK summers (case study) Large windows and doors can aid passive cooling in summer – but only when externally shaded like this. Large windows and doors can aid passive cooling in summer – but only when externally shaded like this. ← Previous