Gledhill PLUHP300DUO 300L/70L StainlessLite Plus Heat Pump Duo Unvented Cylinder

The Gledhill PLUHP300DUO is a 300 litre unvented hot water storage cylinder with integrated 70 litre buffer tank, specifically designed for air or ground source heat pumps. Manufactured from high-quality duplex stainless steel, it provides reliable mains-pressure hot water for domestic use in larger households.

Built to the latest standards with high-density HCFC-free foam insulation, the unit includes all necessary safety devices and controls for straightforward installation. It features a high-efficiency corrugated primary heat exchanger and a 3 kW immersion heater for backup or legionella protection.

Key Features

• 300L cylinder capacity with 70L internal buffer tank
• High-efficiency 3 m² corrugated steel coil for optimal heat transfer
• 3 kW Incoloy immersion heater
• Secondary return connection
• ErP rating C
• 25-year manufacturer warranty
• Complies with Section G3 Building Regulations
• High-density HCFC-free foam insulation

Benefits

• ✔ Reduces heat pump on/off cycling for longer compressor life
• ✔ Maintains constant flow rate through heat pump for efficiency
• ✔ Provides reliable mains-pressure hot water
• ✔ Space-saving 2-in-1 design eliminates separate buffer tank
• ✔ Excellent thermal performance with low heat loss
• ✔ Suitable for new installs or heat pump upgrades
• ✔ Trade-friendly with all controls and safety devices included
• ✔ Durable duplex stainless steel construction

Technical Specifications

• MPN: PLUHP300DUO
• Capacity (cylinder/buffer): 300/70 litres
• Height: 2030 mm
• Diameter: 630 mm
• Weight empty: 64 kg
• Weight full: 436 kg
• Heat loss: 104 W / 2.51 kWh/24hr
• Primary heat exchanger surface area: 3 m²
• Number of immersions: 1
• Secondary return: Yes

What’s in the Box?

1 x Gledhill PLUHP300DUO StainlessLite Plus Heat Pump Duo Cylinder complete with controls, safety devices and immersion heater.