H1 Energy Efficiency Modelling

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H1 modelling is about proving your building is warm, energy-efficient, and compliant with the NZ Building Code’s energy requirements. It’s now a key part of getting a building consent. 

 At C3, we make H1 compliance simple. We provide:

• ✔️ Custom H1 energy models (new builds or alterations)
• ✔️ Reports ready for council submission 
• ✔️ Clear guidance on what you need — and nothing you don’t

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 For projects that need to meet the code without changing the design, and without blowing the budget.

Ideal for: Fast consents, tight budgets, minimal rework 

• Lowest-cost pathway to H1 compliance 
• No unnecessary design changes 
• Clear, council-ready reporting
   

✅ Saves time. Saves money. Gets you over the line.
 

 Goes beyond basic compliance to improve comfort, efficiency, and long-term performance.

Ideal for: Passive house principles, energy-conscious builds

• Design tweaks for lower energy use 
• Advice on insulation, glazing, and energy optimisation.
• Performance vs. cost balance

 Let’s make sure your project is compliant, smart, and efficient.