When you need VRF flexibility in high-rise or sealed-plantroom installations, Mitsubishi Electric’s Water-Cooled VRF systems (PQHY‑P & WR2 series) deliver unmatched adaptability. We explore full model specs, installation guidance, design-focused Q&A, and how these systems serve modern commercial needs.
When you need VRF flexibility in high-rise or sealed-plantroom installations, Mitsubishi Electric’s Water-Cooled VRF systems (PQHY‑P & WR2 series) deliver unmatched adaptability. We explore full model specs, installation guidance, design-focused Q&A, and how these systems serve modern commercial needs.
Explore our commercial air conditioning services:
https://www.climateworks.co.uk/commercial-air-conditioning
Unlike air-cooled VRF systems, the PQHY‑P (Water Source VRF heat pump) and WR2 (Water Source Heat Recovery) units reject heat to a water circuit rather than ambient air. That eliminates issues like rooftop access constraints, acoustic exposure, and municipal planning limitations.
Key Genius Features:
Structural Considerations
Pipework and Water Circuit Management
Double Heat Recovery
Electrical and Controls Integration
Q: How do these systems support multi-zone commercial buildings?
The WR2 series allows each zone to independently demand heating or cooling. You maximise energy efficiency via simultaneous heat recovery internally without external heat reject systems.
Q: Client needs efficient HVAC for both winter and summer—why choose PQHY or WR2?
PQHY works well where only heating or cooling is needed. WR2 takes it further, automatically balancing heating and cooling needs across the building, improving performance and lowering energy costs.
Q: We’re in a dense urban centre with limited rooftop access—what’s the advantage here?
Both series are water-cooled; they bypass the need for rooftop plant. That means less planning red tape and easier plantroom access without lifting constraints.
Q: Can these be scaled to high-rise sites?
Yes. PQHY and WR2 units can be combined in modular fashion across plantrooms and utilize vertical risers for water and minimal refrigerant piping—ideal for tall buildings.
Pick PQHY or WR2 when:
Air-cooled VRF remains better for retrofit scenarios where rooftop or external access is straightforward.
Dr. Julian Carter
Dr. Julian Carter is a highly experienced thermal systems expert with over 15 years in the field, holding a PhD in thermal systems. His career spans academic research, consulting, and teaching, focusing on air conditioning and refrigeration systems. Dr. Carter bridges the gap between theoretical advancements and practical applications, providing expert insights to organisations like ClimateWorks, where his guidance informs decision-making and industry best practices. Notably, he has worked on international projects with organisations such as Daikin Industries, the International Institute of Refrigeration (IIR), and the United Nations Environment Programme (UNEP). These collaborations addressed energy performance, sustainable refrigerants, and advanced cooling technologies. Currently a lecturer at Edinburgh University, Dr. Carter combines his expertise with a passion for educating the next generation of engineers and advancing climate control technologies.
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