Key points
- Leak sensors sound an alarm or send a phone alert when they get wet.
- Automatic shut-off valves close the main water line when a leak is detected.
- Placement matters — put sensors where leaks start.
- Some insurers offer discounts — ask yours.
Where to put sensors
- Under kitchen and bathroom sinks
- Next to the water heater and water softener
- Behind the washing machine
- Under the refrigerator and dishwasher
- Near the sump pump
- In the furnace or utility room
Types
- Standalone alarms — inexpensive, beep locally
- Smart sensors — send alerts to your phone
- Whole-home shut-off valves — installed on the main line by a plumber; some detect unusual flow
They’re especially useful in vacant homes and cabins and finished basements. See water damage prevention.
Already had a leak?
Call (385) 250-2825 — answered live 24/7 by the Vault crew.