Ice Box Challenge 2025 – with amazing results!
We’re excited to highlight a remarkable achievement from the Ice Box Challenge 2025: 👉 The smallest team delivered the best ice-results! This is a team of students at Mittuniversitetet in Östersund. ❄️ Only 20% of the ice melted in the passive house located at Jamtli in Östersund, May 15 to June 6 (23 days). ❄️ In comparison, 60% of the ice melted in the conventional house during the same time.