IG Passivhus Sverige

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16/08/2025

GutHolz Attic Hatch is an innovative attic access that includes an airtight and insulated hatch with a unique sealing system, designed to prevent heat loss and eliminate air leaks. It will reduce your heating bills maintaining insulation performance all year round

This is why we like it:
✅ Unique airtight sealing system for the door and frame
✅ Fully insulated hatch and rigorous thermal performance testing
✅ Manufactured by the global leader in high-performance attic hatches

Available in various heights to suit your needs. With over 60 years of experience, this product guarantees exceptional, long-lasting performance, and it is the perfect solution to improve the energy efficiency of your home or commercial project.

👉 Visit our website for more information: https://loom.ly/THZWAIs

A year of hard work. A moment of celebration. A future full of promise. On Wednesday, we reached the grand finale of Ice...
13/06/2025

A year of hard work. A moment of celebration. A future full of promise.

On Wednesday, we reached the grand finale of Ice Box Challenge Sweden 2025, and what a journey it has been. Over the past year, we’ve had the honour of following passionate student teams from across Sweden as they designed, built, tested, failed, learned, and rose again, all in pursuit of one shared goal: to shape a more sustainable future.

🎉 This year’s overall winner is Sub-Zero Studio from Luleå University of Technology, congratulations! ❄️ Your vision, clarity, and commitment were truly outstanding.

At the same time, this challenge has shown us that excellence takes many forms. Each team brought something unique, and the jury was deeply impressed by the dedication, creativity and heart on display. We’re proud to celebrate the following recognitions:

🏅 Distinction in Craft and Commitment – Ice Box Challenge Miun, Mittuniversitetet
🏅 Leadership in Material Reuse – Dala Glacier, Högskolan Dalarna
🏅 Outstanding Ex*****on and Delivery – IceBox Challenge Team Linnaeus University, Linnéuniversitetet
🏅 Excellence in Project and Concept Communication – Sub-Zero Studio, Luleå tekniska universitet

💫 And to every single student who stood up to this challenge: we see you. We celebrate you. You made this more than just a competition, you made it a movement.

Over 60 people gathered on Teams on Wednesday, mentors, sponsors, jury members, university staff, and many more, to celebrate the incredible work of these teams.

To everyone who supported this project, through guidance, feedback, funding, inspiration or simply by cheering from the sidelines, we are deeply grateful.
But the heart of this project has always been you: the students. Thank you for letting us be part of this ride. It has been a privilege to watch you grow, push boundaries, and build something bigger than yourselves.

In the end, we’re not five teams from different cities, we are one community, one team, with a shared purpose: to design sustainable solutions and take meaningful steps toward a better-built future.

🇸🇪THE FINAL MELTDOWN – Ice Box Challenge 2025, Sweden 🇸🇪After weeks of waiting, the big moment is here!Nine boxes. Four ...
05/06/2025

🇸🇪THE FINAL MELTDOWN – Ice Box Challenge 2025, Sweden 🇸🇪
After weeks of waiting, the big moment is here!
Nine boxes. Four cities. One shared mission: building a more energy-efficient future.
Tomorrow, we reveal the results.

📍 Växjö – by Växjösjön, 12:25 PM
📍 Östersund – at Jamtli, boxes open in the morning, results on stage at 2 PM
📍 Borlänge – Högskolan Dalarna parking lot, 12 PM
📍 Luleå – Södra Hamn, final show at 2 PM

🎶 Live music • 🌭 Free food • 🎁 Giveaways • 💚 Climate awareness

Student teams across Sweden have taken on the challenge – now it’s time to celebrate their work and see which box kept its cool the best!

👉 Follow
https://lnkd.in/dM4j5tur
https://lnkd.in/dn72Gus5
https://lnkd.in/dCveFSAv
https://lnkd.in/dqEh9idN

for live updates and behind-the-scenes moments.

🌍 Let’s make National Day a celebration of climate solutions – powered by knowledge, creativity, and student innovation.

The students at Högskolan Dalarna have now completed their two iceboxes, each filled with one cubic meter of ice. We’re ...
12/05/2025

The students at Högskolan Dalarna have now completed their two iceboxes, each filled with one cubic meter of ice. We’re excited to see the results on June 6! You’ll find the boxes just outside Dalarna University in Borlänge, and they’re definitely worth checking out. You can also find other iceboxes participating in the Ice Box Challenge Sweden 2025 in Luleå, Stockholm, Växjö, and Östersund.

📍 Find the location here: https://maps.app.goo.gl/FbKTLjvJwtVXh6Xh6


by The International Passive House Association IG Passivhus Sverige

Yesterday, the first competing team installed their two boxes. A big congratulations to the students from Linnéuniversit...
07/05/2025

Yesterday, the first competing team installed their two boxes.
A big congratulations to the students from Linnéuniversitetet, who, with impressive dedication and perseverance, first designed the boxes and then built and assembled them with the support of generous sponsors.

The ice is now officially in the boxes, and the experiment is underway! 🧊 In the coming weeks, we’ll follow how well the boxes insulate, an exciting and visual reminder of the power of energy-efficient building.

📍 You’ll find the boxes in central Växjö, and we can promise they’re well worth a visit! Find the location here:
https://maps.app.goo.gl/rAetfbmLi3i7Rkb2A



by The International Passive House Association IG Passivhus Sverige

We’re excited to introduce the next proud sponsor of the Ice Box Challenge 2025!At Winge Byggnads AB, we believe in buil...
22/04/2025

We’re excited to introduce the next proud sponsor of the Ice Box Challenge 2025!

At Winge Byggnads AB, we believe in building not only structures, but a sustainable future. That's why we're excited to support the Icebox Challenge, an innovative initiative aimed at raising awareness of climate change and energy efficiency.
The Icebox Challenge demonstrates the importance of energy-efficient design and construction. By comparing two ice boxes – one built with conventional materials and the other with sustainable methods – we can visually show the impact of building choices on our environment. This aligns perfectly with our mission to incorporate sustainable practices into all our projects.
By participating in the Icebox Challenge, we aim to inspire our community and our customers to consider the environmental impact of their choices in construction and design. Together, we can work towards a greener and more sustainable future.
Join us and support this important cause! Learn more about the Icebox Challenge on iceboxchallenge.org and see how you can make a difference.
For more information about Winge Byggnads AB and our commitment to sustainability, visit wingebygg.se.

Become a sponsor of the Ice Box Challenge! We're seeking support for materials, ice, transport, and exhibition costs. Want to help shape the future? Contact us at [email protected]!



by The International Passive House Association IG Passivhus Sverige

Big thanks to all the student teams for bringing so much energy, creativity and good vibes into this year’s challenge. 🙌...
17/04/2025

Big thanks to all the student teams for bringing so much energy, creativity and good vibes into this year’s challenge. 🙌 Enjoy the holiday, you’ve earned it! 🌷

And to all our followers and friends, we wish you a joyful and relaxing Easter holiday too! 🐣

Linnéuniversitetet Luleå tekniska universitet Mittuniversitetet Högskolan Dalarna KTH Royal Institute of Technology



by The International Passive House Association IG Passivhus Sverige

We’re excited to introduce the next proud sponsor of the Ice Box Challenge 2025!ByggConstruct is a proud co-organiser of...
16/04/2025

We’re excited to introduce the next proud sponsor of the Ice Box Challenge 2025!

ByggConstruct is a proud co-organiser of the international competition Ice Box Challenge: Building for a Sustainable Future, which in Sweden is carried out together with IG Passivhus.

The aim is to raise awareness of sustainable building and energy efficiency. Swedish technical colleges compete by building small houses for one cubic metre of ice.
The best insulated house, where the ice melts the least, wins!

ByggConstruct has long experience of passive houses and, together with IG Passivhus, has built and certified several preschools and trained staff in energy-efficient construction.

“Our ambition at ByggConstruct is to be at the forefront of creating energy-efficient buildings. We want to build circularly with well-thought-out working methods and create solutions to minimize energy input and the building's climate footprint throughout
the building's entire lifespan”, Stefan Andersson, vice president at ByggConstruct.

“It is important for ByggConstruct to work towards smarter buildings. The Ice Box Challenge gives us the opportunity to be associated with positive forces”, Stefan continues.

Become a sponsor of the Ice Box Challenge! We're seeking support for materials, ice, transport, and exhibition costs. Want to help shape the future? Contact us at [email protected]!






by The International Passive House Association IG Passivhus Sverige

Dynacon Construction AB joins the Ice Box Challenge as a committed partner in driving innovation and comfort through ene...
15/04/2025

Dynacon Construction AB joins the Ice Box Challenge as a committed partner in driving innovation and comfort through energy-efficient building technologies.

Dynacon is a dedicated building contractor focused on new technology for energy efficient and comfortable buildings. We are a mid-size company with broad interest and experience in Passive House solutions. Along with our ambition to complete our projects in close cooperation with our clients, we fully support the Ice Box Challenge and the benefits it will bring to the ongoing work for a sustainable living.

Become a sponsor of the Ice Box Challenge! We're seeking support for materials, ice, transport, and exhibition costs. Want to help shape the future? Contact us at [email protected]!




by The International Passive House Association IG Passivhus Sverige

This project wouldn’t be possible without our amazing sponsors! We extend our deepest thanks to HMB Construction for the...
14/04/2025

This project wouldn’t be possible without our amazing sponsors! We extend our deepest thanks to HMB Construction for their invaluable support. Their commitment to sustainability and innovation plays a crucial role in driving progress forward.

At HMB Construction, we believe in building for the future, with care, curiosity, and a deep respect for the environment. As proud supporters of the Ice Box Challenge, we are inspired by the students’ commitment to energy efficiency and sustainable innovation.

With roots in local craftsmanship and a strong presence across Sweden, we combine experience with a forward-thinking mindset. For us, sustainability is not just a goal — it’s part of our everyday work, from smart material choices to energy-efficient construction methods.

The Ice Box Challenge reflects something we truly believe in: The future of construction depends on knowledge-sharing, creative thinking, and collaboration across generations. We’re honored to be part of an initiative that encourages bold ideas and real solutions for a climate-smart built environment.

Become a sponsor of the Ice Box Challenge! We’re seeking support for materials, ice, transport, and exhibition costs. Want to help shape the future? Contact us at [email protected]!





by The International Passive House Association IG Passivhus Sverige

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