A burst supply line while the house is empty is the single most expensive thing that can happen to it.

The numbers
Water damage is now the number one home insurance claim in Canada, accounting for more than 40% of all home claims. The average claim runs about $23,550. The average basement flood is about $43,000. Several insurers have introduced minimum deductibles of $2,500 specifically for water damage, so even a modest claim now carries a real cost to you.
Those figures are year-round. What makes December different is that houses sit empty, and an unattended leak runs for days rather than minutes.
What the device does
A whole-home controller such as the GROHE Sense Guard fits on the main water line where it enters the house. It monitors pressure and flow continuously, learns the difference between a tap running and a pipe failing, and closes the supply automatically when it sees a burst. It alerts your phone at the same time.
It also catches the slow leak — the drip inside a wall that would otherwise go unnoticed for months and surface as a stain on a ceiling. Floor sensors placed under a laundry sink, behind a dishwasher or beside a hot water tank add a second layer.
What it needs
A power outlet at the main shut-off and a Wi-Fi signal that genuinely reaches there. In a concrete basement or a crawlspace that is worth testing before installation day rather than after. GROHE quote approximately 90 minutes for professional installation, which matches our experience where the shut-off is accessible.
More detail on our GROHE Sense Guard installation page.
What it costs you to wait
Nothing, if the pipe holds. Everything, if it does not. This is the one item on the autumn list that is explicitly insurance rather than maintenance — and it is the one we would fit first in a house that is empty over the holidays, has a finished basement, or has a hot water tank sitting above living space.
Booking it
We work across Langley, Surrey, Vancouver, Burnaby, Richmond, the North Shore, the Tri-Cities and the Fraser Valley. Licensed and insured, with a written workmanship warranty set out in our Service Guarantee.
This is one of eight jobs we cover in the autumn plumbing guide for the Lower Mainland.
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