Phyn sends a High Flow Alert when it detects an unusually high rate of water use in your home. By default, this alert is triggered when:
High water flow lasts at least 3 minutes, or
Total water use reaches 50 gallons
These are the initial, predefined thresholds.
What happens next
If Auto Shutoff is enabled:
You’ll receive the first High Flow Alert.
A second alert is sent 2 minutes later.
If you don’t respond within 2 minutes of the second alert, Phyn will automatically shut off your water.
How Phyn adapts over time
After the first 21 days of installation, Phyn begins adjusting High Flow thresholds based on your home’s actual water-use patterns.
Thresholds are updated every 24 hours
Days with no water usage won’t affect learning
Frequent high usage → thresholds gradually increase
Consistently lower usage → thresholds become more sensitive
This helps reduce unnecessary alerts while still protecting your home.
Checking your alert status
You can find details in the Alerts section of the Phyn App:
Active alerts mean water use is still ongoing
Resolved alerts mean the activity has stopped, and you’ll see when it was last detected
For example, if a hose was left running and later turned off, the alert will appear as resolved.
What usually causes a High Flow Alert
Common causes include:
Broken or burst pipes
Damaged supply lines (washing machines, ice makers)
Outdoor hoses left running
Occasionally, irrigation systems or pool filling may trigger an alert—especially before Phyn has fully learned your home’s patterns.
What you should do
If you’re home:
Check for visible or audible water flow.If you’re unsure of the cause:
Turn off your water using the Phyn App and contact a plumber right away.If you’re away from home:
We recommend shutting off the water remotely in the app until someone can investigate.
Help Phyn learn
If you confirm the alert was not caused by a leak, tap the alert and select “Tell Us” at the bottom of the screen. Your feedback helps Phyn recognize normal activities and avoid sending alerts for the same behavior in the future.