Worcester Bosch Compress 5800i AW 250L Slim Pre-plumbed Cylinder Indoor Unit

The Worcester Bosch Compress 5800i AW 250L Pre-plumbed Cylinder Indoor Unit is a compact, pre-plumbed indoor cylinder designed for integration with the Compress 5800i AW air-to-water heat pump system, providing efficient hot water storage for residential applications.

Product Description

The Compress 5800i AW indoor Pre-plumbed Cylinder unit features a 250L pre-plumbed cylinder that minimises installation time and space requirements, making it ideal for modern homes. It includes factory-fitted components like the expansion vessel, pump, and valves for hassle-free setup. With Connect-Key K30 connectivity as standard, this Pre-plumbed Cylinder enables easy commissioning and remote monitoring via the Bosch EasyAir app. This all-in-one solution supports low-GWP R290 refrigerant and delivers reliable DHW up to 65°C, compliant with UK building regulations.

Key Features

• Pre-plumbed design: Factory-assembled with pump, expansion vessel, and valves for quick installation.
• Slim footprint: Compact dimensions fit tight spaces like cupboards.
• Connect-Key K30: Integrated connectivity for app-based setup and monitoring.
• High capacity: 250L storage for larger family hot water needs.
• Low noise: Quiet operation with sound diffuser in the outdoor unit.
• ERP A+++ rated: Energy-efficient for low running costs.
• Compatible with R290: Eco-friendly refrigerant for reduced GWP.
• Weather optimised: Performs in UK climates down to -25°C.

Technical Specifications

• Model: WB-7731600273 – Compress 5800i AW 250L Indoor Unit.
• Capacity: 250 litres.
• Maximum DHW temperature: 65 °C.
• ErP rating: A+++.
• Refrigerant: R290 (GWP 3).
• Connectivity: Connect-Key K30 (Bluetooth/WiFi).
• Operating temperature: -25°C to +43°C (system).
• Noise level: <50 dB(A) at 1m.

Dimensions & Weights

• Width: 400 mm.
• Depth: 290 mm.
• Height: 900 mm.
• Weight: ~70 kg (empty).

System & Application Notes

• Ideal for pairing with Compress 5800i AW outdoor unit in space-constrained homes.
• Compatible with underfloor heating, radiators, and low-loss headers.
• Suitable for new builds and retrofits; supports smart controls for efficiency.
• Installation by qualified heat pump engineers following Worcester Bosch guidelines.
• Qualifies for Boiler Upgrade Scheme grants; 7-year warranty on cylinder.