Which immersion heater is best for hard water areas?

Titanium immersion heaters are best suited to hard water areas as they resist limescale buildup and corrosion more effectively than copper elements.

Are copper immersion heaters still suitable for domestic use?

Yes, copper immersion heaters remain suitable for many domestic applications, particularly in soft to moderately hard water areas.

Do titanium immersion heaters last longer than copper?

In hard water or high-usage environments, titanium immersion heaters typically offer a longer lifespan due to their resistance to scale and corrosion.

Can I replace a copper immersion heater with a titanium one?

In most cases, yes. Provided the length, power rating, and thread type match, upgrading from copper to titanium is a straightforward replacement.

Should the thermostat be replaced at the same time as the immersion heater?

Often yes. Replacing the thermostat alongside the immersion heater can help ensure safe temperature control and reliable performance.

Heatraq | Genuine Heatrae Sadia & Baxi Parts Supplier UK

Heatraq the trade standard in heating components

Browse our latest products

View Catalogue

Heating components with promotional text and 'Shop Now' button on a gradient background

Hot Water & Heating Spares - Heatrae Sadia Specialists

Heatraq is your trusted online source for genuine Heatrae Sadia and Baxi spare parts.

Whether you’re a heating engineer, plumber, electrician or a homeowner looking for a reliable replacement, we supply authentic components designed for safe, efficient and long-lasting performance.

With fast UK delivery and competitive pricing, we help you get repairs
completed right the first time.

Featured Categories

Water Heaters

A curated range of Heatrae Sadia and Baxi electric water heaters — from point-of-use units to high-capacity systems. Ideal for trade installations and
replacements.

View Range

Immersion Heaters Components

OEM immersion heaters, thermostats and element kits
suitable for unvented cylinders and electric water heaters. Built for accuracy,
safety and long-term reliability.

View Range

Water filter system with cylindrical filter, brass valve, and connectors on a white background

Expansion Vessels

Genuine potable expansion vessels that help maintain safe
pressure levels and protect system components. Fully compliant with
manufacturer standards.

View Range

Trusted Supplier of Genuine Heating and Hot Water Components

At Heatraq, we specialise in supplying genuine Heatrae Sadia and Baxi parts for heating and hot water systems across the UK. With a background in professional trade supply and a commitment to reliability, we provide installers, maintenance engineers and homeowners with authentic, manufacturer-approved components that perform. From immersion heaters and thermostats to valves and expansion vessels, every product is sourced directly for quality assurance and long service life. Whether you’re replacing a single part or managing multiple projects, Heatraq delivers the right solution—quickly, efficiently, and backed by expert support.

Learn More

Popular Everyday Trade Essentials

Valves

Pressure relief valves, blending valves, inlet groups and safety valves engineered for regulated and high-performance operation in hot water systems.

View Range

Gaskets & Seals

OEM gaskets, O-rings and seal kits designed to prevent leaks and maintain reliable operation. A must-have for servicing and maintenance work.

View Range

Accessories & Fittings

Installation essentials, including cables, brackets, taps, fixings and supporting parts for professional repairs and upgrades.

View Range

Why Trade Professionals Choose Heatraq?

Genuine parts only — no aftermarket substitutes
Consistent stock levels on the most requested components
Fast delivery with Royal Mail, DPD & APC options
Clear compatibility information on every product
Trade-friendly support — simple ordering and dependable fulfilment

From cylinder elements to valves and control components, we supply the parts engineers trust.

We're here to help!

Whether you’re replacing a thermostat, servicing a Supreme unit or installing a new water heater, Heatraq has the genuine part you need.

Browse our collections or search by part number to get started.

Can't find the part you're looking for? No problem, we've got you. Just give us a call or email, and we will source the correct part or unit you require.

Contact the Heatraq Team

Heatrae Sadia Spare Parts – FAQ

Do you stock genuine heating and water heater spare parts?

Yes, we supply genuine spare parts for immersion heaters and water heaters, including Heatrae Sadia components.

Why should I use genuine spare parts?

Using genuine spare parts ensures correct fit, reliable performance, and helps extend the lifespan of your heating or hot water system.

Can spare parts fix common water heater faults?

In many cases, replacing parts such as immersion heater elements, thermostats, or gaskets can resolve common issues like lack of hot water or overheating.

How do I identify the correct spare part?

The easiest way is to match the original part number or system model. If unavailable, comparing size, power rating, and connection type is essential.

Do you supply spare parts for older systems?

Yes, we stock a wide range of water heater and immersion heater spare parts, including components for older and discontinued models where available.