Clear, practical H1 compliance support for standard projects, complex glazing, renovations, additions, and designs that need more than a simple pathway.
This page keeps the compliance, modelling and optimisation work separate from trade quantity takeoffs.
We prepare H1 compliance reports for residential and light commercial projects using the appropriate NZ Building Code energy efficiency pathway, including H1/AS1, H1/AS2, calculation method reporting, and VM1 support where required.
Core serviceWe carry out H1/VM1 modelling where a project requires a more detailed compliance pathway, including designs with glazing over 40% or where a passing result cannot be achieved using the calculation method alone. Useful for testing specification options before final documentation.
Detailed complianceFor non-standard projects, renovations, additions, complex existing buildings, or designs that do not fit neatly within a simple compliance pathway, we can help develop clear H1 alternative-solution logic for review and submission.
Complex projectsWe provide practical heat pump sizing support by calculating the required heating capacity for the main living area under the Healthy Homes heating assessment methodology. Useful for checking whether proposed or existing fixed heating is appropriately sized.
Heating checkWhere a project is close to failing H1, or where the proposed specification is becoming expensive or impractical, we test practical options across roof, wall, floor, slab, glazing, and construction R-values to identify a sensible compliance pathway.
Problem solvingSend through your plans, specs, or project details and we’ll help identify the right pathway.