The traditional 'vented' hot water cylinder operates with a header tank and generates lower water pressure than an unvented cylinder. In 'direct' units the water is heated by one or more electric immersion heaters. In 'indirect' units the heat source is an external boiler that circulates hot water through a coil heat exchanger within the cylinder. In practice indirect units also have an electric immersion heater as a back-up in case of boiler failure. Indirect cylinders are generally more expensive to purchase and install but usually result in faster reheat times as much more heating power is normally available from a boiler than from electric immersion heaters. Direct (all-electric) units come into their own when a gas/oil boiler is either not available or too expensive to install, or in situations where the requirement for annual gas safety checks of appliances, flues and pipework is considered onerous, for example at rental properties.
Select the product attributes to refine your search.
Heatrae Sadia Megalife 100 direct, 100L, 3kW.
Ground-breaking 25-year cylinder guarantee, titanium immersion heater element and Duplex stainless steel construction. Fast recovery coil that can heat up 150 litres of water in under 12 minutes. 25-year guarantee Titanium immersion heater(s). No anode. Ideal for use in very aggressive water areas. Immersion heater and safety cut-out designed to latest EU standard.
Capacity 100 Litres | Elements 1 x 3kW | Dimensions 755 x 550 x 550mm (H x W x D)
Size:
Single
Order Code:
030700
Price:
£471.00
Price inc. VAT:
£553.43
Heatrae Sadia Megalife 120 direct, 120L, 3kW.
Ground-breaking 25-year cylinder guarantee, titanium immersion heater element and Duplex stainless steel construction. 25-year guarantee Titanium immersion heater(s). No anode. Ideal for use in very aggressive water areas. Immersion heater and safety cut-out designed to latest EU standard.
Capacity 120 Litres | Elements 1 x 3kW | Dimensions 877 x 550 x 550mm (H x W x D)
Size:
Single
Order Code:
030704
Price:
£520.00
Price inc. VAT:
£611.00
Heatrae Sadia Megalife 150 direct, 150L, 3kW.
Ground-breaking 25-year cylinder guarantee, titanium immersion heater element and Duplex stainless steel construction. 25-year guarantee Titanium immersion heater(s). No anode. Ideal for use in very aggressive water areas. Immersion heater and safety cut-out designed to latest EU standard.
Capacity 150 Litres | Elements 1 x 3kW | Dimensions 1061 x 550 x 550mm (H x W x D)
Size:
Single
Order Code:
030701
Price:
£721.00
Price inc. VAT:
£847.18
Heatrae Sadia Megalife 170 direct, 170L, 3kW x 2.
Ground-breaking 25-year cylinder guarantee, titanium immersion heater element and Duplex stainless steel construction. 25-year guarantee Titanium immersion heater(s). No anode. Ideal for use in very aggressive water areas. Immersion heater and safety cut-out designed to latest EU standard.
Capacity 170 Litres | Elements 2 x 3kW | Dimensions 1187 x 550 x 550mm (H x W x D)
Size:
Single
Order Code:
030702
Price:
£769.00
Price inc. VAT:
£903.58
Heatrae Sadia Megalife 210 direct, 210L, 3kW x 2.
Ground-breaking 25-year cylinder guarantee, titanium immersion heater element and Duplex stainless steel construction. 25-year guarantee Titanium immersion heater(s). No anode. Ideal for use in very aggressive water areas. Immersion heater and safety cut-out designed to latest EU standard.
Capacity 210 Litres | Elements 2 x 3kW | Dimensions 1445 x 550 x 550mm (H x W x D)
The traditional 'vented' hot water cylinder operates with a header tank and generates lower water pressure than an unvented cylinder. In 'direct' units the water is heated by one or more electric immersion heaters. In 'indirect' units the heat source is an external boiler that circulates hot water through a coil heat exchanger within the cylinder. In practice indirect units also have an electric immersion heater as a back-up in case of boiler failure. Indirect cylinders are generally more expensive to purchase and install but usually result in faster reheat times as much more heating power is normally available from a boiler than from electric immersion heaters. Direct (all-electric) units come into their own when a gas/oil boiler is either not available or too expensive to install, or in situations where the requirement for annual gas safety checks of appliances, flues and pipework is considered onerous, for example at rental properties. 
Time Controllers 
Ground-breaking 25-year cylinder guarantee, titanium immersion heater element and Duplex stainless steel construction. Fast recovery coil that can heat up 150 litres of water in under 12 minutes. 25-year guarantee Titanium immersion heater(s). No anode. Ideal for use in very aggressive water areas. Immersion heater and safety cut-out designed to latest EU standard. 
