HVAC Engineering That Performs,
Not Just Complies

Reshape designs HVAC systems for new builds and existing buildings, from small fit-outs through to complex projects, including chilled water and larger central plant where required. The right system depends on how the building is used, hours of operation, internal loads, ventilation needs, noise expectations, space constraints, and lifecycle cost. Our job is to turn those inputs into a system that is comfortable, compliant, and buildable, not just “something that fits on paper.” Send your plans and goals, and Reshape will recommend a best-fit HVAC option and confirm what information is needed next.

You need an HVAC engineer when performance, compliance, coordination, or risk matters, which is most new builds, major refurbishments, plant replacements, and any project where comfort and operating cost need to be predictable. Contractors are excellent at building, but engineering is what prevents undersized plant, poor ventilation outcomes, noise complaints, and expensive rework caused by missing load assumptions or coordination clashes. Tell Reshape your project stage and priorities, and we’ll tell you what level of engineering input is actually needed.

Reshape’s HVAC scope is defined per project, but typically includes system design, equipment selection support, coordination, and documentation suitable for consent, tender, and construction, plus construction-phase support if engaged. Exclusions and assumptions are confirmed early so responsibilities stay clear, and you do not discover gaps during tender or on site. Share your brief and drawings, and Reshape will confirm scope boundaries in plain English.

Reshape provides design documentation suitable for building consent, tender, and construction, tailored to your project stage and procurement method. This typically includes coordinated drawings and specifications, and where required, support for Producer Statements such as PS1 (design) and PS4 (construction review) depending on council conditions and monitoring scope. Tell us your consent pathway and programme, and Reshape will recommend the right deliverable set to keep consent and construction moving.

To start properly, Reshape needs the latest architectural plans with room names, intended use, occupancy assumptions, and the constraints that drive HVAC, including ceiling zones, risers, plant locations, façade and glazing intent, and any key architectural drivers such as noise or grille visibility. If you have a Revit or IFC model it typically speeds up coordination and reduces redesign loops. Send the latest plans, and Reshape will reply with a short, project-specific list of missing inputs that unlock design progress

Yes. Reshape uses thermal modelling and load simulation to size heating and cooling, test comfort outcomes, and reduce overspend, rather than relying on rules-of-thumb. We commonly use Hourly Analysis Program (HAP) for load calculations and sizing, and our reports explicitly document the software version and modelling assumptions. Where appropriate, we can also use tools like betterbuilding.io as part of a broader performance-modelling workflow (project-dependent). If you want confidence in equipment sizing and running cost, ask Reshape for a modelling-based approach

Yes. Reshape supports main plant replacements and can assist from early options through to documentation and construction support, depending on what you need. The critical step is verifying loads, interfaces, controls intent, and installation constraints before equipment is locked in, because that is where cost blowouts and downtime usually happen. Share your plant details and site constraints, and Reshape will outline a safe replacement pathway and the minimum information needed to proceed.

Yes. Reshape provides HVAC surveys and reports for existing buildings to identify issues, prioritise upgrades, compare tendered vs installed outcomes, support due diligence, and establish upgrade options before money is spent. For example, our review reports commonly include site inspection, airflow measurements, documentation review, independent thermal modelling, and recommendations for remedial options. Tell us the building type and symptoms (comfort, odour, noise, high bills), and Reshape will advise the right survey scope.

Reshape can provide Producer Statements where required, but what is required is driven by the Building Consent Authority and your consent conditions, not a one-size-fits-all rule. In practice, PS1 can support a smoother consent process, and PS4 requirements can vary, councils are not always consistent, and PS4 issuance depends on construction monitoring scope. Forward the council feedback or consent conditions, and Reshape will advise the Producer Statement approach and what monitoring is needed to support it.

Yes. Reshape can review contractor submittals and shop drawings, undertake construction observation, and support commissioning and handover where engaged. If a PS4 is required, we need enough monitoring evidence to stand behind it, typically including first-fix and final inspection, plus commissioning results and as-builts as part of sign-off. Tell us what sign-off is needed and how many site visits you want, and Reshape will structure an efficient monitoring plan.

Yes. Reshape provides peer reviews to identify risk, gaps, and compliance issues before they become construction problems, especially during value engineering, equipment substitutions, or when inheriting a design midstream. A good peer review focuses on the decisions that drive outcomes, ventilation intent, loads, noise risk, maintainability, and whether the design can actually be built as shown. Send the drawing set and specification, and Reshape will confirm review scope and turnaround.

Yes. Reshape provides HVAC CAPEX and OPEX forecasting, and early budgeting is most reliable when it compares a small set of realistic system options, rather than pricing an undefined concept. We can align early budget ranges to the design assumptions that actually drive cost, system type, plant location, controls intent, distribution complexity, and commissioning requirements. Share floor areas, use, and your preferred direction, and Reshape will produce an options-based budget range.