Expansion Vessel SizeNot ApplicableIncludes Expansion VesselNoNumber of Immersion HeatersLong-Life 3 kW Incoloy Supplied as Standard; Upgrades AvailableYears Guaranteed25 Years (Cylinder); 2 Years (Parts)Width545mmTypeCylinders - Heat PumpSolar CompatibleYesPower kW3 kWMaterialDuplex Stainless SteelHeight915mmFuel TypeExternal Source (Heat Pump)Energy Efficiency RatingBDiameter545mmDepth545mmConnection Size28 mm Coil; 22 mm Hot/Cold (Including Nuts And Olives); 10 mm Sensor Probe PocketColourSilverCoil TypeLarge-Diameter Corrugated CoilCapacity120 LSupplier Part NumberESHPD3120Brand NameUK Cylinders