Test and Adjust Sprinkler Timer
Why It Matters
Overwatering wastes money and promotes disease. Underwatering kills your lawn. Seasonal adjustment keeps water use optimal.
Quick Guide
- 1
Gather your tools and materials
You'll need: basic tools. Materials required: necessary materials.
- 2
Perform the test and adjust sprinkler timer
Review and adjust your sprinkler timer schedule for the current season's watering needs.
- 3
Verify and clean up
Check that the work was completed correctly and clean up your workspace.
Community Tips
Most sprinkler timers drift 2-3 minutes per month, so test actual water delivery by placing containers in the lawn and measuring depth after a full cycle—this reveals whether the timer's display matches real runtime. Brands like Rain Bird ($30-60) and Hunter ($40-80) often require minor dial adjustments to compensate for natural drift.
Never adjust sprinkler timers during rain or within 24 hours after heavy watering, as soil moisture sensors and timer calibrations depend on accurate baseline conditions. Premature adjustments lead to overwatering, which wastes 20-40% more water and promotes fungal disease in turf and ornamental plants.
Smart timer upgrades like Raindrip WiFi controllers ($60-100) eliminate manual testing entirely by syncing to local weather data and automatically skipping watering when rain is forecast, typically recovering their cost in water savings within one season compared to basic mechanical timers ($15-30). ---