A practical guide to choosing and checking insulation levels, supporting H1 compliance and warmer, healthier, energy‑efficient New Zealand homes.

A calculation tool that shows how thermal bridging affects the real performance of timber‑framed walls, helping designers understand heat loss, improve wall design and compare insulation and framing options.

A smart search hub that brings together trusted Building Code H1 Energy efficiency guidance, tools, and resources from BRANZ and industry partners.

A simple Excel‑based tool that helps designers check whether houses and small buildings meet Building Code H1 Energy efficiency requirements using the schedule method, available for use until 26 November 2026.

This Excel based tool helps designers check energy-efficiency compliance for houses and small buildings against the H1/AS1 6th edition calculation method, with clear pass or fail results suitable for building consent applications.

This Excel based tool helps designers check energy efficiency compliance for buildings other than housing over 300 m2 using the H1/AS2 2nd edition calculation method, with clear pass or fail results suitable for building consent applications.