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3D Thermal Modelling

SolutionAir

Thermal modelling is how Solutionair determines exactly how much heating, cooling, and ventilation a home needs to perform at its best. Using a detailed three-dimensional model of the building, we simulate how the home will respond to different seasons, weather conditions, and patterns of use—before construction even begins.

This data-driven approach replaces guesswork with precision. Instead of relying on generic assumptions or conservative estimates, systems are designed specifically for each home, ensuring they are properly matched to its size, layout, and construction.

Details
Scope of use
  • New builds and major renovations
  • Architecturally designed or complex homes
  • Airtight or high-performance buildings
  • Projects where predictable comfort and efficiency are required
Why it matters

Poorly sized systems are one of the leading causes of uneven temperatures, reduced comfort, and excessive energy consumption. While oversized systems are most of the time either on or off—resulting in periods of over- or underperformance—undersized systems struggle to perform at all.

Thermal modelling ensures every component is correctly sized and coordinated, reducing performance risks and delivering consistent comfort, improved efficiency, and reliable long-term results.

How it works
  • A three-dimensional model of the building is created to simulate real-world performance.
  • Heating, cooling, and ventilation loads are calculated for the home and for individual spaces
  • The analysis considers layout, construction, insulation, glazing, orientation, airtightness, and local climate conditions.
  • Calculations are carried out using recognised modelling methods aligned with international standards. 
For specifiers

Scope of analysis

  • Whole-building and room-by-room heating, cooling and ventilation loads
  • Suitable for standard residential through to high-performance and airtight homes

Methodology and standards

  • Three-dimensional thermal modelling used to simulate building behaviour
  • Load calculations aligned with recognised international HVAC sizing methodologies
  • Local New Zealand climate data applied

Design and coordination value

  • Supports early HVAC system selection and layout
  • Reduces oversizing and underperformance risk
  • Assists coordination between architectural, services, and construction teams

Typical outputs

  • Space-specific load data
  • Heating / Cooling requirements aligned to building performance
  • Clear basis for system sizing and specification

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About the
Seller

Solutionair is a New Zealand-based leader in residential ventilation, heating, and cooling, helping homes perform at their best. We work closely with homeowners, architects, designers, and builders to create integrated HVAC solutions that deliver healthy air, consistent comfort, and long-term efficiency.

Modern homes are airtight, which improves energy efficiency—but it also makes air quality, moisture control, and thermal comfort critical from day one.

Our approach is design-led and evidence-based. Using thermal modelling and system planning, we tailor solutions to each home’s layout, orientation, construction, and lifestyle, ensuring ventilation, heating, and cooling work together as a seamless system.

Ventilation is at the core of what we do. Our Mechanical Ventilation with Heat Recovery (MVHR) systems continuously deliver fresh, filtered air while removing moisture and stale air. In winter the MVHR recovers heat from the outgoing air and in summer it takes advantage of cool indoor air to maintain comfort without wasting energy. Properly integrated, these systems improve indoor air quality, protect the building, and reduce reliance on mechanical heating and cooling.

From early planning to installation and commissioning, Solutionair provides guidance, technical clarity, and support to ensure every system performs as intended. The result? Homes that are healthier, more comfortable, and better to live in—every day of the year.

Verified ArchiPro Member6 years · Since 2020