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A homeowner in North Delta, BC called TechVill after their LG WM4100HBA front-load washer started leaking from the door during wash cycles. TechVill technician Alexander confirmed the cause in about ten minutes on site: a visible tear in the door gasket — the flexible rubber boot seal that keeps water contained inside the drum. This is the first repair TechVill has documented in Delta, a district municipality in Metro Vancouver just south of the Fraser River.
On a front-load washer, a leak at the door almost always traces back to the boot seal. The gasket is a wear item — it flexes on every cycle, sits in constant contact with water, detergent and heat, and is vulnerable to punctures from coins or keys left in pockets. Alignment, hinge and internal drain-seal faults can also cause door leaks, but a gasket that shows physical damage on inspection is a clear, direct diagnosis. No electrical testing or multi-cycle observation was needed here.
The unit is an LG WM4100HBA — a mid-tier premium residential front-load washer with an inverter direct-drive motor. Water escaping from behind the door glass points to the boot seal well before any other component, because that seal is the only barrier between the drum and the door frame during a fill-and-tumble cycle.
Reading the model and serial plate on arrival matters more than it looks. LG builds several boot-seal variants across its washer platforms, and the gasket dimensions, rubber compound and mounting geometry are engineered to one specific drum-and-door architecture. Confirming the exact model number lets us order the correct part the first time rather than guessing from a photo.
Part on order for the install visit:
- Door gasket / boot seal (part #MDS66290825) — the flexible rubber seal that bridges the drum and door frame and keeps wash water contained during fill, tumble and spin. Sourced through LG’s OEM service parts catalogue; the MDS prefix is LG’s standard washer-component service numbering. No other OEM part numbers were recorded for this repair.
This case is in progress. On the diagnostic visit, Alexander confirmed the torn gasket, quoted the repair, and the homeowner approved it on the spot. Because the correct boot seal has to be ordered to the confirmed model number, a prepayment covering the part, handling and the service call was collected through a payment link, with the labour balance due once the gasket arrives and is installed. At that install visit the old seal comes off, the new MDS66290825 goes on, door closure and seal seating are checked, and a wash cycle with a full water fill verifies there are no remaining leaks. On premium residential washers, an OEM gasket is the right call — an aftermarket seal that does not match LG’s tolerances risks the same leak returning.
The quoted total is $609 CAD plus 5% GST, broken out as $185 for the OEM gasket, $30 parts handling, $225 labour for the install, and a $169 service call. Booking the diagnostic first meant the homeowner knew the full scope and cost before committing, with no return trip wasted on the wrong part.
Book online to schedule an LG washer diagnostic with our team across Delta and Metro Vancouver.
