Ice Box Challenge Sydney 2022 Wrap Up

The Ice Box Challenge has concluded in Martin Place, with the Passive House Standard box victorious over the Australian Building Code box by a whopping 413kgs!

The boxes, which were each equally filled with a cubic metre of ice nearly two weeks ago, were uncovered at the closing ceremony on Friday 4 March and measured as follows:

Australian Building Code box: .8 kg
Passive House Standard box: 413.8 kgs

APHA CEO Paul Wall, was thrilled with the results, saying "the event captured interest far and wide, with the big reveal demonstrating visually, and beyond doubt the superior qualities of Passive House construction. Being a performance standard, we knew that based on the modelling we could guarantee the outcome, and that the impressive 413kgs of ice remaining in the Passive House box could have far exceeded of the 12 day demonstration.

The benefits of Passive House extend way past the thermal qualities proven with the Ice Box Challenge, with a healthy and comfortable indoor environment guaranteed, creating the ideal environment for people whether that be in the family home or any asset class including office, educational or community buildings to name a few.

This was a real team effort, and it would not have been possible without the support of the City of Sydney, all our sponsors including the major sponsor Eclipse Passive House and of course the many volunteers that gave their time so generously during the event"

Guess The Ice Competition

The winner in our Guess the Ice Competition was the guess closest to the difference in ice melt of the final result.

Congratulations to Libby H. and her winning guess of 412kg. Libby has won a year's free membership with APHA and a selection of APHA merchandise!

Thanks for your Support

Our sincere thanks to the City of Sydney for the grant to help our project under the Environmental Performance Grants - Innovation - 2021-22 - Round 2 program.

We are so grateful for the support of our valued Sponsors:


And our volunteers, we couldn't have done it without you! We are always so delighted with the response from our APHA community and their willingness to lend a hand.

Jennifer Crawford
David Hellier
Matthew Kosnik
Paul Shelbourn
Simon Nelson
Hilit Einav
Kylie Mills
Marie Mattinson

And thank you to everyone who visited the Ice Box Challenge. Don't settle for the minimum standards, ALL Australian's deserve to live in healthy, low energy, comfortable, and resilient buildings.

Evan Maclean Photography

Drone Photography by John Beurle

Closing Ceremony with Lord Mayor Clover Moore, APHA CEO Paul Wall, and APHA Chairperson Kate Nason