Rain Sensor & Weather Station Install
Your controller doesn't know
it rained last night.
A standard irrigation controller is a timer — it fires its programmed schedule regardless of what's happening outside. Rain sensor and weather station integration gives your system real-time environmental awareness, suspending irrigation after measurable rainfall and adjusting runtimes based on actual evapotranspiration data from your specific climate zone.
In North Idaho's variable climate — dry Julys, wet Mays, surprise September freeze events — that real-time data is the difference between a water bill that reflects efficient use and one that reflects a system running through a rainstorm because nobody updated the timer.
Water savings, code compliance,
and system protection.
North Idaho Rainfall Is Unpredictable by Design
Kootenai County averages 25–27 inches of precipitation annually, with significant variability — dry July stretches followed by late-summer thunderstorm patterns, wet Mays, and surprise September cold fronts. A controller running a fixed schedule ignores all of it. A properly calibrated rain sensor stops irrigation after measurable rainfall, preventing the waterlogged lawns and fungal conditions that fixed schedules create in a wet week.
Water Bills Reflect the Savings Immediately
Studies by the EPA's WaterSense program show properly functioning rain sensors reduce irrigation water use by 15–35% annually. At Post Falls and CDA utility rates, a mid-size residential irrigation system running without sensor bypass wastes $80–$200 of water per year in avoidable run cycles during and after rain events. The hardware cost recovers in one to two seasons.
Idaho Code Requires It on New Installs
Idaho Plumbing Code and most Kootenai County municipalities require rain or soil moisture sensors on any new irrigation system installation. LP installs sensor hardware as standard on every new system and adds sensors to existing systems that predate the code requirement — keeping your property in compliance when you sell.
Protects the Entire System Investment
Running an irrigation system during a freeze event — common in early May and late September in North Idaho — can crack lateral lines, split valve bodies, and destroy backflow assemblies. A properly calibrated freeze sensor costs under $100 installed. Replacing a cracked poly lateral or a split RPZ assembly runs $300–$1,200. The protection math is straightforward.
Every sensor type, properly
installed and verified working.
Wireless Rain Sensor Installation
Wireless rain sensors mount to a gutter, fascia, or fence post and communicate directly with your irrigation controller without additional wiring. When accumulated rainfall exceeds a set threshold — typically 1/8″ or 1/4″ — the sensor overrides the scheduled run cycle until the sensor disc dries. LP selects sensor placement that avoids overhang drip lines and obstructions that would skew readings.
Wired Rain Sensor Retrofit
Wired sensors connect directly into the controller's sensor terminal — the standard circuit that virtually every residential irrigation controller, from basic mechanical timers to advanced smart units, supports from the factory. LP integrates wired sensors cleanly with conduit or direct-bury wire runs that keep installations code-compliant and weather-sealed.
ET-Based Weather Station Integration
Evapotranspiration (ET) stations go further than rain sensors — they measure temperature, solar radiation, wind speed, and humidity to calculate actual plant water demand each day. LP integrates ET stations with compatible Orbit B-hyve, Hunter, and Rachio controllers, establishing daily runtime adjustments calibrated to your property's specific plant and turf zones.
Freeze Sensor Addition
North Idaho's shoulder seasons — April through May and September through October — regularly produce morning freeze events that can crack poly pipe, damage heads, and stress turf that's watered just before temperatures drop. LP installs freeze sensors that suspend irrigation any time ambient temperature falls within a configurable range of 32°F, protecting the entire system.
Sensor-to-Controller Commissioning
Installing the hardware is half the job. LP programs the sensor threshold, tests the bypass function (to verify the controller actually responds to the sensor signal), and configures any delay intervals after rain stops. Most contractor-installed sensors we encounter during service calls have never been correctly commissioned — LP does it right.
Sensor Calibration & Annual Check
Rain sensor discs absorb and release moisture at rates affected by mineral deposits, UV degradation, and debris accumulation. LP inspects and recalibrates or replaces sensor discs as part of every spring startup — confirming the sensor is actually responding before the irrigation season begins, not discovering it's failed after the first summer storm.
Frequently Asked Questions
Free Estimate