Wilson Elements | Hot Water Element 3600W Bolt-On Flange | Incoloy Sheathed
The Wilson Elements HWIS-36 is a 3600W Incoloy sheathed hot water element for electric storage water heaters, secured by a bolted flange onto a seal. The manufacturer's technical notes recommend Incoloy elements in hard water areas, because they resist the corrosive effects of a high mineral supply far better. The HWIS-36 is supplied as a replacement element, and its bolts are tightened to no more than 8Nm in the stated order to keep the seal sound.
When a storage water heater stops producing hot water, the element is the usual suspect. Meanwhile the household is counting hours until hot water is restored. In bore water and hard town supplies, mineral deposits can scale and corrode an element toward a second premature failure. The HWIS-36 answers that with an Incoloy sheath, which the manufacturer notes resists the corrosive effects of hard water supplies far better. At 3600W it suits tanks specified for a 3600W element, refitted through the same bolted flange and seal arrangement.
Element replacement is bread-and-butter service work, and the part cost sits low against the callout. Choosing the Incoloy version in a hard water area reduces the odds of a return visit on the same tank. That protects the reputation more effectively than the invoice does. The HWIS-36 carries a published 8Nm bolt torque and a stated tightening order, so the seal is reinstated correctly rather than by feel. Carrying one 3600W Incoloy element covers the most common hard water replacement encountered on a service run.
Features
- 3600W output — rated at 3600W for electric storage water heater service and replacement work.
- Incoloy sheath — the HWIS-36 uses an Incoloy sheathed element rather than a copper sheathed one.
- Hard water resistance — the manufacturer notes Incoloy offers far greater resistance to the corrosive effects of hard water supplies.
- Nominated for bore water — specified by the manufacturer for extreme water hardness, including bore water and hard town supplies.
- Bolted flange fixing — the element is held by bolts through a flange onto a seal at the tank port.
- 8Nm maximum bolt torque — the manufacturer warns that tightening the bolts beyond 8Nm will cause the seal to leak.
- Stated tightening order — the bolts are tightened in the sequence shown in the manufacturer's diagram.
- Replacement part — supplied as a replacement element for existing electric storage water heaters.
- Wilson Elements range — part of the Wilson Elements heating range of hot water and appliance elements.
- Fitment check required — Sparky Direct's terms ask buyers to confirm the HWIS-36 suits the tank with a licensed installer before purchase.
- 334 gram packed weight — the element ships at 0.334kg, so it travels easily as a van spare.
- One year warranty — one year domestic and one year commercial from the invoice date, returned to Sparky Direct.
Where to use
- Bore water properties — rural and semi-rural storage heaters running on a bore supply.
- Hard town water supplies — regions where mineral content shortens element service life.
- Element failure callouts — replacing a failed element in a storage water heater specified for a 3600W element.
- Preventive replacement — swapping an ageing element while the tank is already drained for other service work.
- Rental and property maintenance — the HWIS-36 suits scheduled hot water servicing across a managed portfolio.
- Farm and shed hot water — storage heaters on tank or bore supply well away from town water.
- Service vehicle stock — one HWIS-36 on board covers the common 3600W hard water replacement.
Bolt torque above 8Nm will make the seal leak, so the published limit and the stated tightening order apply on every fit. The HWIS-36 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.
