Collection: Immersion Thermostats

Heatraq stocks precision-engineered immersion thermostats designed to regulate water temperature safely and efficiently. Our range includes standard, adjustable and high-limit thermostats compatible with Heatrae Sadia and Baxi immersion heaters, helping prevent overheating while optimising energy use.

Each thermostat is tested for accuracy, durability and compliance, making them suitable for both domestic and commercial hot water systems. Whether you’re replacing a faulty control or carrying out preventative maintenance, our genuine immersion thermostats ensure dependable temperature control and system protection.

Related components:
If your thermostat has failed due to age, scale or overheating, you may also need a replacement Immersion Heater. For faster maintenance and guaranteed fitment, consider an Immersion Heater Plate Assembly.

Heatrae Sadia Immersion Heaters & Thermostats – FAQ

Do you stock genuine Heatrae Sadia immersion heaters?

Yes, we supply genuine Heatrae Sadia immersion heaters and spare parts, ensuring full compatibility, reliability, and manufacturer-approved performance.

How do I find the correct Heatrae Sadia immersion heater replacement?

Check the model number, power rating (usually 3kW), and immersion length. If you’re unsure, matching the existing part number is the safest way to ensure compatibility.

Are Heatrae Sadia immersion heater spares interchangeable?

Some parts may be interchangeable across models, but many are model-specific. Always confirm compatibility to avoid incorrect installation or performance issues.

Do you sell Heatrae Sadia immersion elements separately?

Yes, we stock Heatrae Sadia immersion heater elements, allowing you to replace worn or faulty components without purchasing a complete unit.

Are Heatrae Sadia immersion heaters suitable for commercial use?

Yes, Heatrae Sadia immersion heaters are widely used in commercial and hospitality environments, offering durability and consistent hot water performance.

What does a thermostat do in a water heater or immersion heater?

thermostat regulates water temperature by switching the heating element on and off, ensuring consistent hot water while preventing overheating.

Can I replace just the thermostat instead of the full heater?

Yes, replacing a faulty immersion heater thermostat is often a cost-effective solution when the heating element is still functioning correctly.

How do I choose the correct thermostat replacement?

Check the original thermostat’s temperature range, length, and compatibility with your heater or immersion element. Matching the part number is recommended.

Are thermostats interchangeable between models?

Some thermostats are interchangeable, but many are model-specific. Always verify compatibility to ensure safe and accurate temperature control.

Do you stock thermostats for commercial systems?

Yes, we supply thermostats suitable for domestic and commercial heating and hot water systems, including genuine replacements for leading brands.