Parts by Model

Find the correct replacement parts for your water heater by selecting its appliance range or model. Browse genuine spares for popular Heatrae Sadia and Santon systems, including Megaflo cylinders, Supreme boiling water units, Multipoint water heaters, Express units, Aquarius, Aqualine and Aquaheat models.

Model names can cover different capacities, electrical ratings and manufacturing generations. Before ordering, check the complete model, product code and serial number shown on the appliance data label, together with the original component part number wherever possible.

Shop Spare Parts by Appliance Model

Three Steps to Identify Your Water Heater

  • A circular icon featuring a dark navy magnifying glass over a dark navy barcode card with white text reading 'PART NO. 12345' and an orange checkmark, on a white background.

    Find the Data Label

    Locate the manufacturer’s data label on the appliance. It will usually show the model name, product code, capacity, electrical rating and serial number.

  • A flat vector icon showing a blue rectangular device with a magnifying glass over it, on a plain white background.

    Check the Complete Model

    Record the full model and product code, not just the appliance range. The same range may include different capacities, ratings and manufacturing generations.

  • A simple line icon of an open envelope with a speech bubble, where the flap is filled with a solid orange color on a white background.

    Ask Heatraq

    Cannot identify your model? Send us clear photographs of the appliance, its data label and the existing component, including any numbers printed on the part.

    Contact Heatraq 

Find Water Heater Spare Parts by Appliance Model

Choosing parts by appliance model can make it easier to narrow down the components designed for your particular water heater, cylinder or boiling water unit.

The Heatraq Parts by Model hub brings together genuine and manufacturer-approved spares for Megaflo, Supreme, Multipoint, Express and Santon appliances, including Aquarius, Aqualine and Aquaheat ranges.

A model range may include several capacities, electrical ratings and manufacturing generations, so the model name alone may not confirm compatibility. Always compare the complete product code, serial number and original component reference before ordering.

A white Megaflo water heater shown with several included parts on a light grey background: a thermostat, an immersion heater, a brass valve with a black top fitting, a black rubber gasket

Megaflo Spare Parts

Browse genuine replacement parts for Megaflo unvented hot water cylinders, including immersion heaters, thermostats, element plate assemblies, valves, expansion components, gaskets and seals.

Megaflo cylinders are available in different capacities and manufacturing generations. Check the complete model, product code, serial number and original component reference to confirm compatibility before ordering.

Shop Megaflo Spare Parts
Heatrae Sadia Supreme electric water heater with spare parts for the unit displayed on a light grey background.

Supreme Spare Parts

Browse genuine replacement parts for Heatrae Sadia Supreme boiling water units, including heating components, thermostats, thermistors, wiring assemblies, controls, taps and associated fittings.

Supreme models vary by capacity, finish and electrical specification. Always match the full appliance model and product code with the original component reference before selecting a replacement.

Shop Supreme Spare Parts
A white electric water heater shown with its replacement parts on a light gray background: a cylindrical filter cartridge, a brass thermocouple with wire leads and mounting screws, and a white terminal box with copper-colored metal ends. The heater has a red and black valve assembly on top and a red and black logo label on the front reading 'HEATRAE SADIA' and 'MULTIPOINT'.

Multipoint Spare Parts

Browse genuine replacement parts for Heatrae Sadia Multipoint water heaters, including heating elements, thermostats, valves, controls, seals and other model-specific components.

The Multipoint range includes appliances with different capacities, ratings and component specifications. Check the complete model, product code and original part number rather than relying on appearance alone.

Shop Multipoint Spare Parts
Heatrea Sadia Express water heater kit with a white cylindrical tank, copper coil heat exchanger, white valve, white pump control, metal brackets, hose, and gasket on a light grey background.

Express Spare Parts

Browse genuine replacement parts for Heatrae Sadia Express water heaters, including heating components, thermostats, thermal controls, fittings, seals and other appliance-specific spares.

Express units are available in different sizes and versions, so confirm the full model, capacity, electrical rating and product code shown on the appliance label before ordering.

Shop Express Spare Parts
A white cylindrical water heater expansion tank with a chrome faucet, a brass pipe connector, a thermal switch, and an electrical outlet with temperature sensors, arranged on a light gray background.

Santon Spare Parts

Browse genuine replacement parts and accessories for Santon water heaters, including Aquarius, Aqualine and Aquaheat models. The collection includes heating components, thermostats, controls, fittings, seals and vented outlet accessories where available.

Santon model names can cover several capacities and electrical ratings. Check the complete appliance reference, product code and original component number to ensure the replacement is suitable.

Shop Santon Spare Parts

Water Heater Parts by Model FAQs

Where can I find my water heater model number?

Look for the manufacturer’s data label on the outer casing, underside or rear of the appliance. It may show the model name, product code, capacity, electrical rating and serial number. Photograph the complete label before ordering replacement parts.

Is the appliance range name enough to identify the correct spare part?

Not always. Ranges such as Megaflo, Supreme, Multipoint, Express, Aquarius, Aqualine and Aquaheat can include different capacities, electrical ratings and manufacturing generations. Use the complete model, product code and serial number wherever possible.

Can the same water heater model use different components?

Yes. Manufacturers may revise components during an appliance range’s production life. Two units with the same range name may use different thermostats, elements, valves or controls, so the serial number and original component reference can be important.

How do I confirm that a spare part is compatible with my appliance?

Compare the listed compatible models and product codes with the information on your appliance data label. Also check the original part number, electrical rating, dimensions, connections and pressure settings where applicable. Contact Heatraq if anything is unclear.

What information should I send Heatraq if I cannot identify my model?

Send clear photographs of the complete appliance, its data label and the component requiring replacement. Include any numbers printed on the existing part and briefly describe the fault or reason for replacement.

Should water heater parts be installed by a professional?

Many replacement parts involve mains electricity, pressurised hot water or safety-critical controls. Diagnosis, installation and recommissioning should be completed by a suitably competent professional in accordance with the manufacturer’s instructions.