Commercial Heat Pump & VRF Installation Hamilton Waikato

VRF/VRV 2-Pipe Efficiency Simultaneous Heat & Cool IQP SS9 Certified

JSR Refrigeration & Air Conditioning is your one-stop-shop for commercial HVAC design, installation, and maintenance. Whether managing a single commercial building or multiple property portfolios, we recommend energy-efficient VRF/VRV systems, water-sourced heat pumps, and maintenance programs designed around your operational budget and goals.

CITY MULTI & VRF Variable Refrigerant Flow

Advanced 2-pipe VRF systems (such as CITY MULTI S & Y series) for small to large commercial applications. Allows complete zonal changeover from cooling to heating, ensuring a consistent, comfortable indoor climate across all office zones.

Independent room-by-room temperature control for multi-tenant offices
Inverter compressor control operating at precise required load to cut power draw
Compact outdoor condenser footprints ideal for rooftops or plant rooms

Simultaneous Heating & Cooling 2-Pipe Systems

The CITY MULTI R2 series offers the ultimate in operational flexibility — cool one office zone while heating another at the exact same time. Our BC controller transfers heat energy internally, drastically reducing energy consumption.

Heat recovery technology capturing heat from cooling zones to warm heating zones
Exclusive 2-pipe system design lowering installation pipework & labor costs
Ideal for buildings with server rooms needing cooling alongside heated offices

Water-Sourced VRF Systems & Tower Retrofits

Advanced water heat-source units suitable for high-rise towers, coastal buildings, or extreme climates. Operating similarly to air-cooled units, water-sourced VRF systems eliminate defrost cycles and retrofit cleanly into existing water loops.

No outdoor defrost cycle interruptions during freezing winter mornings
Perfect retrofit option for existing cooling tower or boiler water loops
Resistant to coastal salt corrosion when installed indoors or in plant rooms

Commercial HVAC Maintenance & IQP SS9 Compliance

Prevent unexpected equipment downtime, safeguard tenant comfort, and comply with NZ Building Code standards. Our IQP registered engineers conduct quarterly servicing, air volume testing, and Form 12A signoffs for BWOF.

Preventative maintenance agreements tailored to building occupancy and usage
Detailed service history logs & energy savings performance analysis
24/7 priority emergency repair response for commercial contract clients

COMMERCIAL SHOWCASE & SYSTEMS

Explore Commercial HVAC Equipment

We supply, engineer, and install industry-leading Mitsubishi CITY MULTI and Daikin commercial VRF/VRV systems.

CITY MULTI VRF

CITY MULTI S & Y Series VRF

2-pipe variable refrigerant flow systems for small to large commercial buildings. Ensures constant indoor climate control across all office zones.

Pipe: 2-Pipe System Control: Zonal Changeover Scope: Multi-Office

CITY MULTI R2 Simultaneous Heating & Cooling

SIMULTANEOUS R2

CITY MULTI R2 Simultaneous System

World-first 2-pipe simultaneous cooling and heating VRF system. Cool server rooms or sunny offices while heating shady zones, recovering wasted energy.

Feature: Simultaneous H&C Controller: BC Controller Efficiency: Heat Recovery

WATER-SOURCED

Water-Sourced VRF Heat Pump System

Connects to building water loops or cooling towers. Eliminates outdoor defrost cycles in frigid weather and provides long-life indoor plant room operation.

Source: Water Loop Defrost: Zero Defrost Cycle Best For: High Rises

Commercial Ceiling Concealed Ducted Heat Pump

COMMERCIAL DUCTED

Concealed High-Static Commercial Ducted

High-pressure ducted air handlers hidden in ceiling bulkheads, delivering high volume air circulation across open-plan commercial floors and retail stores.

Pressure: High Static ESP Display: Linear Grilles Capacity: Up to 28kW

CEILING CASSETTE

4-Way Under-Ceiling Cassette Unit

Flush-mounted 360° ceiling cassette units providing independent vane control, quiet motor operation, and built-in condensate drain pumps.

Airflow: 360° 4-Way Vane Pump: Built-in Drain Pump Mounting: Flush Ceiling

COMMERCIAL ENGINEERING PROCESS

How We Design & Install Commercial HVAC

From thermal load modelling to seamless rooftop commissioning and IQP building signoff.

Site & Thermal Audit

We evaluate building occupancy, solar heat gain, room zones, and electrical plant capacity.

VRF & Duct Engineering

Our HVAC engineers specify 2-pipe VRF refrigerant routes, BC controllers, and duct diffusers.

Precision Installation

Certified installers complete pipework, electrical wiring, and outdoor unit placement cleanly.

Air Balancing & IQP Signoff

We balance airflow rates, verify pressure differentials, and issue Form 12A BWOF documentation.

FAQ

Commercial Heat Pump FAQ

Frequently asked questions regarding commercial VRF/VRV systems and HVAC maintenance.

How does simultaneous heating and cooling 2-pipe VRF work?

Simultaneous 2-pipe VRF systems (like Mitsubishi CITY MULTI R2) use a BC controller that routes refrigerant gas and liquid dynamically. Heat rejected from cooling zones (such as server rooms or sunny north offices) is redirected to warm up heating zones, capturing waste energy for extreme efficiency.

What are the advantages of VRF over traditional ducted split systems?

VRF systems allow individual temperature control in dozens of separate rooms using one outdoor unit loop. Inverter compressors adjust output precisely to match current load, preventing energy wastage common in single-zone ducted systems.

When should a business choose a water-sourced VRF system?

Water-sourced VRF is ideal for multi-story towers with existing cooling water loops, coastal buildings exposed to salt air, or regions with severe sub-zero winter temperatures where air-cooled defrost cycles cause heating interruptions.

What IQP building compliance documentation do you provide?

Our trade engineers are IQP registered and provide Producer Statements (PS1–PS4) for design and installation, as well as annual 12A inspection signoffs for Building Warrant of Fitness (BWOF) compliance under Specified System 9 (SS9).

What maintenance contract options do you offer for commercial properties?

We offer customized quarterly or bi-annual preventative maintenance agreements covering coil chemical washing, air filter replacements, gas leak checks, fan bearing lubrication, and 24/7 priority emergency dispatch.

How fast do you respond to 24/7 commercial HVAC breakdown calls?

Contract clients receive 24/7 priority response. Our technicians carry common replacement motors, pressure switches, and control cards for rapid on-site troubleshooting across Hamilton & Waikato.

Commercial Heat Pump & HVAC Systems