Heatrae Sadia Spares & Spare Parts
Electrical Deals Direct supplies genuine Heatrae Sadia spares and replacement parts, including a full range for the Megaflo unvented cylinder — immersion elements, thermostats, cut-outs, relief valves and seals. Order online with trade pricing, fast dispatch and expert phone support from a team who know unvented hot water systems inside out.
About Heatrae Sadia Parts
Heatrae Sadia is a long-established British manufacturer best known for the Megaflo unvented cylinder — the original and one of the most widely fitted unvented cylinders in the UK — alongside its Amptec electric boilers and Multipoint water heaters. Because unvented cylinders run at mains pressure and fall under Building Regulations Part G3, their safety and control components — immersion elements, thermostats, over-temperature cut-outs and relief valves — need to be kept in good order and replaced with the correct part when they fail.
Looking for the cylinder or heater itself? Browse the Heatrae Sadia water heating range, or find related valves in our Reliance parts section.
Common Heatrae Sadia Spare Parts We Stock
- Immersion elements & heaters — direct and Megaflo indirect Incoloy elements and element kits, plus the fitting accessories that go with them (spanners, covers, back nuts and terminal covers)
- Thermostats & cut-outs — rod thermostats, indirect thermostats, combined thermostat and thermal cut-out units, and over-temperature and thermal-fuse cut-outs
- Pressure & temperature relief valves — temperature and pressure relief valves, expansion relief valves, pressure relief valves and tundishes for the G3 discharge arrangement
- Inlet control & isolation valves — Megaflo isolation control valves and inlet control valves
- Seals, gaskets & kits — seal kits and gaskets that perish over time and cause weeping or leaks
- Air vents & controls — automatic air vents, switches and control knobs
How to Find the Right Heatrae Sadia Part
Heatrae Sadia parts are matched to the model, so start by identifying your cylinder or heater — for example the Megaflo or Megaflo Eco — and cross-check the part number on the component you're replacing. It matters whether an element or thermostat is for a direct or indirect cylinder, and safety components such as relief valves must be the correct pressure and temperature rating for your unit. We stock both genuine and compatible options on many parts; if you're unsure which you need, read our guide on how to identify the right water heater spare part, use our Can't Identify Your Spare Part? service, or send our trade counter team the model number or a photo.
Why Buy Heatrae Sadia Spares from Electrical Deals Direct
- Trade pricing on all Heatrae Sadia spares, with account pricing available for regular buyers
- Same-day dispatch on in-stock parts ordered before cut-off
- Genuine Heatrae Sadia parts, plus compatible options on selected items where they offer better value
- Expert phone support to match the right element, thermostat or valve to your specific cylinder
- Deep unvented cylinder and G3 knowledge on hand, not just a parts list
Related Categories
Browse the full Heatrae Sadia water heating range, our Reliance parts, or all spares and accessories. Not sure what you need? Try our Product Advisor or browse the Advice Centre.
Heatrae Sadia Spares — Frequently Asked Questions
Which Megaflo immersion element do I need?
Check whether your cylinder is direct or indirect, then match the element type and rating — Megaflo indirect models typically use an Incoloy element suited to UK water. Confirm against your model and the old element's part number, and if you're unsure, send us the details and we'll match it.
Do you stock genuine and compatible Heatrae Sadia parts?
Yes — most parts are genuine Heatrae Sadia components, and on many items we also offer a compatible alternative. Both are shown on the page so you can choose on price and preference.
Can I replace a Megaflo relief valve myself?
Unvented cylinders are covered by Building Regulations Part G3, and their safety components — temperature and pressure relief valves, expansion valves and the discharge arrangement — must be the correct specification. Replacement of these safety-critical parts should be carried out by a G3-qualified person, so fit like-for-like and use a competent installer where required.
How do I identify an older Heatrae Sadia part?
Send our trade counter the model number or a photo of the data plate or failed component and we can usually match the correct spare, even for older Megaflo cylinders and heaters.
Not sure exactly which part you need? Use our parts finder to search by model. If you'd rather talk it through, call our team on 01934 253600 or use live chat and we'll help you get the right Heatrae Sadia spare first time.
From Splash Backs to Drip Plates to Air Filters, if it's not in the list, don't hesitate to call us on 01934 253600, or send an email over to [email protected]. We are confident that we can source your replacement part or accessory.
