OSO Delta GeoCoil DGC200 200L Heat Pump Cylinder

The OSO Delta GeoCoil DGC200 is a 200 litre indirect unvented heat pump cylinder designed to maximise energy efficiency with its award-winning Vacuum Insulation Panels (VIP) and NANOPUR foam insulation. This cylinder is ErP A-rated and optimised for heat pumps up to 15 kW, offering ultra-low heat loss and outstanding performance for renewable heating systems.

Key Features

• 200 litre capacity with large 2.6 m² smooth scale-resistant coil for efficient heat transfer.
• Ultra-high insulation levels with NANOPUR and VIP technology reducing heat loss by approximately 400 kWh/year.
• Energy rating A (ErP) ensures compliance with stringent SAP and building regulations.
• 25-year warranty on titanium-alloyed stainless steel tank for long-lasting corrosion resistance and durability.
• Built-in digital thermostat with holiday and anti-legionella functions for smart temperature control and hygiene.
• INCOTEC 3 kW immersion heater positioned above the coil can act as a booster for rapid hot water recovery.
• Compatible with gas/oil boilers and heat pump systems including S & Y plan controls integration.
• Compact dimensions: 595 mm diameter x 1270 mm height fit most UK airing cupboards.
• Fully factory-fitted unvented control pack including expansion vessel, motorised valve, temperature and pressure relief valves, and tundish.

Why Buy the OSO Delta GeoCoil DGC200?

The Delta GeoCoil series offers the highest energy retention and efficiency available in heat pump cylinders, delivering exceptional savings on heating bills.

Its advanced insulation system and durable construction provide long-term reliability and compliance with renewable energy standards, making it an ideal choice for new-builds and retrofits utilising heat pumps.

Suitable For

• Homes with heat pumps up to 15 kW requiring efficient indirect water heating storage.
• Integration with gas or oil boilers for dual heat source applications.
• New builds and refurbishments targeting low carbon and energy-efficient heating solutions.
• Properties requiring A-rated, ultra-low heat loss cylinders to meet SAP and building standards.

Technical Specifications

• Brand: OSO Hotwater
• Model: Delta GeoCoil DGC200 (Product code: 11009121)
• Type: Indirect unvented heat pump cylinder
• Capacity: 200 litres (actual volume ~191L)
• Energy Rating: A (ErP)
• Standing Heat Loss: 43 watts / 1.03 kWh/24 hrs
• Dimensions: Diameter 595 mm x Height 1270 mm
• Weight: 273 kg full / 49 kg empty
• Primary Coil Size: 2.6 m² smooth scale-resistant titanium alloy coil
• Thermostat Set Point: 60°C default; digital control with holiday and anti-legionella modes
• Immersion Heater: 3 kW INCOTEC heating element positioned above coil
• Warranty: 25 years on tank, 2 years on components

Installation & Compliance

Comes with a fully compliant G3 unvented control kit including expansion vessel, motorised valve, temperature & pressure relief valves, and tundish. Installation must be performed by a qualified engineer in accordance with UK Building Regulations.