Comprehensive HVAC & Refrigeration Engineering Solutions — From Initial Design to NZBC Compliance.
At JSR Refrigeration & Air Conditioning, we offer end-to-end mechanical system design, technical specification, and project management for commercial, residential, and industrial facilities. Our qualified engineering team works alongside architects, main contractors, building owners, and agricultural clients to deliver fully compliant, energy-efficient turnkey climate control solutions across Hamilton, Waikato, and Auckland.
Producer Statements for HVAC Systems (PS1 – PS4)
Certified engineering documentation and formal Producer Statements required by New Zealand building consent authorities (councils) to confirm that mechanical ventilation, heat pump, and refrigeration designs comply strictly with the New Zealand Building Code (NZBC).
- PS1 – Design: Certified engineering design documentation, heat load calculations & mechanical specifications for council consent.
- PS2 – Design Review: Independent peer review & engineering verification of third-party HVAC designs.
- PS3 – Construction: Contractor construction sign-off confirming equipment and ducting comply with approved consent plans.
- PS4 – Construction Review: Post-installation engineering review required by councils for Code Compliance Certificate (CCC) issuance.
IQP Inspections & Building Compliance (SS9)
Complete compliance management for commercial and industrial buildings operating under specified system SS9 (Mechanical Ventilation and Air Conditioning Systems).
- SS9 Specified System Audits: Comprehensive inspection, air hygiene testing, maintenance log verification, and operational audits.
- IQP Checks for BWOF: Independent Qualified Person (IQP) inspections and annual compliance sign-off for Building Warrant of Fitness renewal.
- WorkSafe & Council Standards: Full adherence to New Zealand environmental, safety, and ventilation standards.
Structured 6-Step HVAC System Engineering
Whether modernising an older building or planning climate control for a new commercial development, our qualified assessment team guides you through a structured 6-step engineering methodology:
- 1. Building Inspection & Thermal Audit: Assessing wall/roof insulation, solar orientation, window glazing, and internal heat loads.
- 2. Heat Load Calculation: Precision calculations determining exact heating/cooling kW demands and required airflow exchange rates (L/s).
- 3. System & Brand Selection: Specifying high-efficiency VRF/VRV, ducted high-static, or heat recovery systems from Daikin, Temperzone & Mitsubishi.
- 4. Acoustic & Ductwork Layout: Designing low-resistance acoustic ducting, diffusers, and intelligent multi-zone controls.
- 5. Outdoor Location Planning: Strategic positioning of condenser units for maximum efficiency and noise boundary compliance.
- 6. Quotation & Engineering Sign-Off: Transparent pricing, technical schematics, Producer Statements, and warranty guarantees.
Turnkey Commercial & Industrial Refrigeration Design
Custom mechanical engineering, specification, equipment supply, and installation for cold storage facilities, food processing plants, supermarkets, and dairy farms across Waikato.
- Walk-In Coolers & Freezers: Custom modular chillers and low-temperature freezer rooms for hospitality & commercial kitchens.
- Refrigerated Warehouse Storage: Large-scale industrial cold storage facilities utilizing central rack compressor systems.
- Food Processing Rooms: HACCP-compliant climate and temperature-controlled cleanroom environments.
- Supermarket Display Line-ups: Glass door reach-in display cabinets and open multideck chiller units.
- On-Farm Milk Cooling: Milk vat refrigeration, primary cooling heat exchangers, and heat recovery water heaters.
In-Depth System Evaluation & Energy Optimization
Comprehensive technical evaluations of existing HVAC/R equipment, maintenance logs, and operating strategies to reduce energy consumption and eliminate unexpected downtime.
- COP & EER Optimization: Identifying retrofits and component upgrades to boost seasonal efficiency ratings.
- Preventative Maintenance Strategy: Tailored maintenance schedules to eliminate breakdown risks and extend equipment life.
- Strategic Capital Planning: Data-driven feedback helping business owners make smart equipment repair vs. replacement decisions.
Turnkey Project Management & Commissioning
Dedicated project management providing seamless coordination between electrical, refrigeration, and mechanical trades for new builds, commercial refurbishments, and industrial upgrades.
- Single Point of Contact: Experienced project managers handling consent filings, scheduling, and trade coordination.
- On-Time & On-Budget: Strict adherence to project milestones, health & safety plans, and financial budgets.
- Full System Commissioning: Airflow balancing, pressure testing, digital controller programming, and client hand-over training.