Mitsubishi 8.5kW R32 1Ph Mono ASHP Outdoor Unit UQ Coastal - PUZ-WM85VAA-BS

The Mitsubishi Ecodan PUZ-WM85VAA-BS 8.5kW R32 1Ph Mono ASHP Outdoor Unit UQ Coastal is a monobloc air source heat pump outdoor unit designed for efficient heating and hot water in coastal UK homes, featuring R32 refrigerant, ultra-quiet operation, and A+++ energy efficiency for reliable performance in harsh environments.

Product Description

The PUZ-WM85VAA-BS is a compact monobloc ASHP optimised for coastal conditions with enhanced corrosion protection, delivering 8.5kW nominal heating capacity with a COP of 4.0 at A7/W35. It uses low-GWP R32 refrigerant for eco-friendly operation and achieves A+++ ErP rating with SCOP 4.54. Ultra-quiet at 48 dB(A), it supports integration with Ecodan cylinders and FTC6 controllers for seamless DHW and space heating. Ideal for homes up to 150m², it offers silent, high-efficiency performance with MELCloud WiFi monitoring.

Key Features

• Coastal optimised: Enhanced anti-corrosion coating for UQ (Ultra Quiet) coastal use.
• R32 refrigerant: Low GWP (675) for reduced environmental impact.
• A+++ efficiency: SCOP 4.54, COP 4.0 for low running costs.
• Ultra-quiet operation: 48 dB(A) sound pressure for residential suitability.
• Monobloc design: All-in-one unit simplifies installation with no indoor refrigerant lines.
• MELCloud WiFi: Remote monitoring and control via app.
• Weather resilient: Operates to -25°C with automatic defrost.
• Hybrid ready: Compatible with existing boilers.

Technical Specifications

• Model: PUZ-WM85VAA-BS – 8.5kW R32 1Ph Monobloc ASHP Outdoor Unit.
• Heating capacity: 8.5 kW (nominal).
• COP (A7/W35): 4.0.
• SCOP (average climate): 4.54.
• Refrigerant: R32 (GWP 675).
• ErP rating: A+++ (35°C).
• Power supply: 230V 1ph 50Hz.
• Noise level: 48 dB(A).
• Operating temperature: -25°C to +43°C.

Dimensions & Weights

• Width: 900 mm.
• Depth: 450 mm.
• Height: 950 mm.
• Weight: 80 kg.

System & Application Notes

• Ideal for coastal homes up to 150m² with underfloor heating or radiators.
• Requires compatible Ecodan indoor unit (e.g., cylinder or FTC6 controller).
• Suitable for new builds and retrofits; integrates with smart home controls.
• Installation by qualified MCS-certified engineers; qualifies for grants.
• 5-year warranty on unit; 7-year on compressor.