Heatrae Sadia 95110905R 27" Superloy 3kW Immersion Heater with RDT Thermostat for Aggressive Water

Genuine Heatrae Sadia 95110905R 27" Superloy 3kW Immersion Heater with RDT Thermostat

The Heatrae Sadia 95110905R is a genuine 27-inch Superloy 3kW immersion heater supplied complete with an RDT thermostat. Designed for demanding water conditions, this long-reach immersion heater provides efficient heating throughout the full height of larger hot water cylinders while offering excellent resistance to corrosion.

Featuring a Superloy heating element, this immersion heater is particularly suitable for installations located in aggressive water areas where standard copper elements may experience a shorter service life. The included RDT thermostat helps maintain accurate water temperature control while supporting safe and efficient cylinder operation.

Manufactured to original Heatrae Sadia specifications, this genuine replacement immersion heater delivers dependable performance and long-term reliability.

Also known as a 27 inch immersion heater, 27" immersion element, Superloy immersion heater or long immersion heater for hot water cylinders.

What Is a Superloy Immersion Heater?

Superloy is a specialist immersion heater material developed to provide enhanced resistance to corrosion in challenging water conditions.

Benefits include:

• Improved resistance to aggressive water
• Longer service life than standard copper elements
• Reduced maintenance requirements
• Reliable heating performance
• Suitable for demanding installations

Where water quality is known to be particularly harsh, a Superloy immersion heater is often the preferred choice.

Why Choose a 27-Inch Immersion Heater?

A 27-inch immersion heater extends much deeper into the cylinder than shorter elements, allowing heat to be distributed more effectively throughout the stored water.

Benefits include:

• Improved cylinder heat-up performance
• Better utilisation of stored hot water
• Suitable for larger cylinders
• Consistent hot water availability
• Efficient energy transfer

For customers replacing an existing immersion heater, matching the original element length is essential.

Supplied Complete with RDT Thermostat

This immersion heater is supplied with a genuine RDT thermostat, providing accurate temperature regulation and helping protect the cylinder from overheating.

The thermostat automatically controls the heating cycle to maintain efficient operation while supporting safe stored water temperatures.

Common Reasons for Replacement

Replacement may be required if:

• The immersion heater is no longer heating water
• The element has failed electrically
• The heater trips the electrical supply
• The thermostat is faulty
• The existing element is heavily scaled or corroded
• A complete immersion heater assembly is required during servicing

Choosing the Correct Superloy Immersion Heater

Superloy immersion heaters are designed for installations where enhanced corrosion resistance is required. Available in multiple lengths, they provide a reliable solution for aggressive water conditions while helping to maximise immersion heater lifespan.

When replacing an existing immersion heater, it is important to match:

• Element length
• Power rating
• Thread size
• Thermostat specification

Installing the correct immersion heater helps ensure efficient heat distribution and reliable hot water performance.

If you're unsure which immersion heater length your cylinder requires, read our guide: What Length Immersion Heater Do I Need? 11", 14", 27" & 36" Explained.

The Superloy Range

• 11" Superloy 3kW Immersion Heater with RDT Thermostat (95110901R)
• 27" Superloy 3kW Immersion Heater with RDT Thermostat (95110905R)
• 36" Superloy 3kW Immersion Heater with RDT Thermostat (95110907R)

Always check your existing immersion heater specification before ordering.

Genuine Heatrae Sadia Spare Part

Using a genuine Heatrae Sadia immersion heater helps ensure:

• Correct fitment
• Reliable heating performance
• Manufacturer-approved compatibility
• Accurate thermostat operation
• Long-term durability

Technical Specifications

Suitable for Aggressive Water Areas

If your existing immersion heater has failed prematurely due to water quality, a Superloy element can offer a more durable alternative to standard copper elements.

You can also browse our full range of Immersion Heaters and genuine Heatrae Sadia replacement parts at Heatraq.