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Learn more by watching our Hotwater Element Duraloy 1800W | HWDS-18 video.
The Wilson Elements HWDS-18 is an 1800W Duraloy hot water element for electric storage water heaters, secured by a bolted flange onto a seal. Wilson positions the Duraloy element for soft water areas, and as suitable for the harder mains supplies listed across Australian capital cities. The HWDS-18 is supplied as a replacement element, and its bolts are tightened to no more than 8Nm in the stated order.
When a storage water heater stops producing hot water, the element is the usual culprit. Meanwhile the household is counting hours until hot water returns. Water hardness varies enough between regions that the wrong element choice reappears as a second premature failure. The HWDS-18 sits between the extremes, nominated by Wilson for soft water areas and for capital city mains supplies at the harder end, and refitted through the same bolted flange and seal arrangement.
Element replacement is steady service work, and the part cost sits low against the callout. Matching the element to the local water supply reduces the odds of a return visit on the same tank. The HWDS-18 carries a published 8Nm bolt torque and a stated tightening order, so the seal is reinstated correctly rather than by feel. At 1800W it covers the lower-output tanks and boosted systems specified for that rating.
Bolt torque above 8Nm will make the seal leak, so the published limit and the stated tightening order apply on every fit. The HWDS-18 is a replacement element only, not a complete tank assembly. Sparky Direct's terms ask buyers to confirm compatibility and suitability with a licensed installer before purchase, because tank and flange arrangements differ between makes and models.
Verified Sparky Direct customer reviews: Hotwater Element Duraloy 1800W (HWDS-18)
"As Advertised and Timely" — Paul
"Good value. Fast delivery" — Lyndsay
(HWDS-18)
Duraloy is the element type Wilson uses on this heating element. The product information positions it for soft water areas, and as suitable for the harder mains supplies listed across Australian capital cities. Wilson does not publish an alloy composition for it.
No more than 8Nm. Wilson warns that tightening the bolts beyond 8Nm will cause the seal to leak, and the bolts are tightened in the order shown on the supplied diagram. A licensed installer completes the fit and refills the tank.
The element is rated 1800W, supplied for electric storage water heater replacement at that output. Circuit protection and the supply arrangement for the load are confirmed by the licensed electrician carrying out the work.
Fitment depends on the tank's element port, flange arrangement and element length, and those differ between makes and models. Sparky Direct's terms ask buyers to confirm compatibility and suitability with a licensed installer before purchase. Check the element already fitted before ordering.
Dissolved minerals in the supply scale and attack the element sheath. Water carrying a high mineral concentration is described as hard. Wilson's technical notes recommend a copper based element in soft water areas, and an Incoloy based element where the water is hard.
Replacing an element involves mains-voltage connections and a drained pressure vessel, so it is work for a licensed tradesperson. Product warranty is void where installation has not been carried out by a licensed electrician. Isolation, draining and refilling all form part of that work.
One year for domestic use and one year for commercial use from the invoice date, with the warranty method being return to Sparky Direct. A separate 100-day money-back guarantee covers change of mind on unused product in its original packaging.
The Wilson Elements HWDS-18 is available online from Sparky Direct, with Australia-wide delivery to any state or territory including regional areas. Sparky Direct is an Australian electrical wholesaler established in 2005, supplying more than 500,000 customers with transparent trade pricing.
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Warranty starts from Invoice Date
Domestic Use: 1 Year
Commercial Use: 1 Year
Warranty Method: Return to Sparky Direct
These specifications and characteristics outline physical, mechanical, electrical details.
| Brand | Wilson Elements |
| SKU | HWDS-18 |
| Model # | HWDS-18 |
| Package Weight | 0.260kg |
| TYPE | VALUE |
|---|---|
| Type | Hot Water Element |
| Brand | Wilson Elements |
| Wattage (W) | 1800 |
Electrical and HVAC products sold by Sparky Direct are intended for installation by licensed and appropriately qualified professionals in accordance with applicable Australian Standards and regulatory requirements. Customers are responsible for ensuring that any product purchased, including any related or associated components, is compatible and suitable for their intended installation and application.
Sparky Direct does not provide installation advice and does not assess product suitability for individual circumstances unless expressly confirmed in writing. Customers must confirm correct product selection, compatibility, compliance, and suitability with a licensed or appropriately qualified professional prior to purchase.
Tools sold by Sparky Direct must be used safely and in accordance with the manufacturer’s instructions. Customers are responsible for ensuring they have the necessary knowledge and competence to operate any tool purchased. If you are unsure how to safely or correctly use a tool, do not use it and seek guidance from the manufacturer or a suitably qualified professional.
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