Mitsubishi Electric · Water-cooled VRF
Water-cooled City Multi VRF.
WY heat pump and WR2 heat recovery VRF for high-rise, coastal and plant-constrained buildings — including buildings with an existing closed water loop that can be re-used. A strong option when replacing ageing central plant.
High-rise
Chiller replacement
Coastal sites
Hotels
Apartments
Key data
| Capacity per unit | 22–150 kW |
| Indoor units per unit | 15 to 50 |
| WR2 heat recovery | Refrigerant and water circuits |
| WR2 max. piping | 550–750 m (P200–P900) |
The range
WY or WR2.
Both connect to a building’s closed water circuit. Condensing units give off no radiant heat, so they can sit in small plant rooms on each floor rather than on the roof.
WY-Series heat pump
PQHY-P200-900Y(S)LM-A. Water-source heat pump VRF from 22 to 150 kW, with 15 to 50 indoor units per condensing unit and individual or centralised control.
WR2-Series heat recovery
PQRY-P200-900Y(S)LM-A. Double heat recovery — between indoor units on the refrigerant side and between condensing units on the water loop — for simultaneous heating and cooling.
Re-using existing plant
Mitsubishi Electric states water-cooled VRF can connect to a building’s closed water circuit, including one from a previous chiller system — often the key to a staged, floor-by-floor replacement.
Selection & installation
The water loop decides the job.
In a replacement, the existing water side matters as much as the new VRF. We assess it before recommending a system.
- Condition and capacity of the existing loop, pumps and heat rejection plant
- Water treatment, strainers and flushing before connection
- Cooling tower or dry cooler obligations reviewed with the owner
- Floor-by-floor changeover planned around tenants
- Loop pumps, valves and alarms integrated with the BMS
- Refrigerant charge checked against AS/NZS 5149
Specifications
Manufacturer data.
From Mitsubishi Electric Australia product pages, checked 5 November 2026. Manufacturer data may change — confirm against the current data book before selection.
| WY heat pump | WR2 heat recovery | |
| Condensing unit models | PQHY-P200-900Y(S)LM-A | PQRY-P200-900Y(S)LM-A |
| Capacity range | 22–150 kW | 22–150 kW |
| Operation | Cooling or heating (changeover) | Simultaneous heating and cooling |
| Heat recovery | — | Refrigerant circuit and water loop |
| Indoor units per condensing unit | 15 to 50 | 15 to 50 |
| Max. refrigerant piping | Refer to data book | 550–750 m (P200–P900) |
| Water source | Closed water circuit | Closed water circuit |
Downloads
Brochures, data & case studies.
Documents open from Mitsubishi Electric Australia. Case studies describe Mitsubishi Electric projects delivered by others and are linked for reference.
- Water-cooled VRF brochure
- City Multi brochure
- Case study: Chevron HQ, One The Esplanade, Perth
- Case study: EQ2, 9 The Esplanade, Perth
- Case study: The Queensbridge Building, Southbank
- Case study: Next Hotel Brisbane (existing chilled water re-used)
- Case study: Rydges Palmerston Hotel
- Case study: Skytower
- Manufacturer page: WY heat pump
- Manufacturer page: WR2 heat recovery
How to buy
Choose your route.
Projects & installation
Supply, installation and commissioning as part of a coordinated mechanical package.
Upgrades & business cases
Replacing existing plant? Start with the options, costs and payback.
Compare the range
See every Mitsubishi Electric system we supply and install.
Quotation
Need pricing for water-cooled VRF?
Send the drawings, the building and what you need. We’ll confirm the selection, supply and next steps.