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Full HVAC System Design

SolutionAir

Heating, cooling and ventilation systems are central to how a home feels, functions, and performs year-round. In modern, airtight homes, these systems must be carefully designed to work in balance with building design and the building envelope to deliver consistent, reliable comfort.

Solutionair designs integrated heating, cooling and ventilation solutions guided by detailed thermal modelling and load analysis. Rather than relying on generic assumptions, each system is tailored to the specific characteristics of the home—its layout, construction, orientation, and occupancy patterns—ensuring precise and responsive performance.

Details
Scope of use
  • New builds and major renovations
  • Architecturally designed homes
  • Airtight or energy-efficient buildings
  • Projects where comfort, efficiency, and predictability are priorities
Why it matters

Incorrectly sized or poorly coordinated systems are a common cause of uneven temperatures and over- or underventilation, leading to unnecessary energy consumption and ongoing comfort issues. Too often, heating and cooling systems are selected without a clear understanding of how the home will perform once built.

By designing systems based on measured loads and real-world conditions, Solutionair delivers predictable comfort, improved efficiency, and long-term reliability. The result is a home that maintains the right temperature with minimal energy use—season after season.

How it works
  • Heating and cooling loads are established through thermal modelling and air supply and extraction requirements through ventilation load calculations.
  • System selection is informed by building layout, insulation levels, glazing, airtightness, and ventilation strategy.
  • Heating, cooling and ventilation solutions are designed to operate efficiently across seasonal conditions.
  • System layouts and control strategies are coordinated to support consistent comfort and low operating costs.
For specifiers

Scope of design

  • Integrated heating, cooling and ventilation system design
  • Coordination with ventilation and overall HVAC strategy
  • Consideration of room-by-room performance requirements

System considerations

  • System sizing based on calculated loads rather than rule-of-thumb values
  • Selection informed by efficiency, acoustic performance, and control requirements
  • Integration with ventilation systems to support humidity management and comfort
  • Compatibility with high-performance and airtight building envelopes

Design and coordination value

  • Reduced risk of oversizing or underperformance
  • Improved temperature consistency across the home
  • Cleaner integration into architectural layouts
  • Fewer compromises during installation and commissioning

Typical outputs

  • Heating, cooling and ventilation system performance criteria
  • Space-specific load data to inform system selection
  • Coordinated design inputs suitable for construction documentation

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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