# Auto-Flush & Sensor Fixtures > Sensor Fixture and Auto-Flush Valve Service; St. Louis metro; Manual-to-Sensor Conversion, Solenoid & Diaphragm Repair. Canonical: https://legacyplumbingmo.com/facility-services/auto-flush-systems Facility Services Touch-free fixtures cut water use and complaints — until the sensors drift, the batteries die, or the solenoids stick. Legacy Plumbing installs and maintains auto-flush systems across St. Louis facility portfolios. [Request Sensor Fixture Service](https://legacyplumbingmo.com/contact-us) [636-978-0120](tel:+16369780120) ## Request Sensor Fixture Service Tell us about your project — we respond within one business day. What's Included ## Touch-Free Fixture Work Whole-restroom conversions or a standing service route across every building you manage. ### Manual-to-Sensor Conversion Retrofitting existing flush valves and faucets with hardwired or battery sensor operators, no rough-in changes. ### Solenoid & Diaphragm Repair Rebuilding the internals that actually fail instead of replacing the whole valve every time. ### Scheduled Battery Service Portfolio-wide battery replacement on a set cycle so fixtures never go dead mid-day. ### Sensor Range Calibration Tuning detection range and flush duration to stop phantom flushes and wasted water. ### High-Efficiency Upgrades Low-consumption water closets, urinals, and metering faucets that reduce utility spend. ### Multi-Site Standardization Consolidating mismatched fixture brands across a portfolio so parts and service are consistent. Our Process ## How Portfolio Service Works ### Fixture Audit We inventory every sensor fixture by building, brand, and model so parts are on the truck the first trip. ### Standardize A recommended standard so future repairs use one parts stock instead of six. ### Scheduled Route Set visits for battery, filter, and diaphragm service before failures generate work orders. ### Report Per-building service records with fixture counts and any recommended replacements. ## Auto-Flush Fixture FAQ ### Can existing manual flush valves be converted to sensor? In most cases yes — the sensor operator replaces the manual handle on the same valve body, so no rough-in work is required. ### Why do sensor fixtures flush when nobody is there? Usually a sensor range set too wide or a reflective surface across from the fixture. Recalibrating the detection range fixes most phantom flushing. ### Do you service multiple buildings on one contract? Yes. We run scheduled fixture routes across facility portfolios so batteries and diaphragms are replaced before they fail. For examples of this work, see [Facility Water Heater & Backflow Program (Regional Portfolio)](https://legacyplumbingmo.com/projects/facility-water-heater-backflow-program) . For planning guidance, read [Before the First Hard Freeze: A Plumbing Walk-Through for St. Louis Commercial Buildings](https://legacyplumbingmo.com/resources/first-hard-freeze-commercial-plumbing-walkthrough-st-louis) and [When a Commercial Plumbing Problem Can't Wait](https://legacyplumbingmo.com/resources/commercial-plumbing-emergency-what-to-do-first) . ### Related Services - [Retrofits & ADA Upgrades](https://legacyplumbingmo.com/facility-services/ada-retrofits) - [Preventive Maintenance Plans](https://legacyplumbingmo.com/facility-services/preventive-maintenance) - [Commercial Water Heaters](https://legacyplumbingmo.com/facility-services/commercial-water-heaters) - [All Facility Services](https://legacyplumbingmo.com/residential) ### Next Steps - [Request Service](https://legacyplumbingmo.com/request-service) - [View All Commercial Services](https://legacyplumbingmo.com/commercial) - [Request a Free Estimate](https://legacyplumbingmo.com/contact-us) Serving the Greater St. Louis Area ## Auto-Flush & Sensor Fixtures Across the St. Louis Metro Schools in Rockwood and Francis Howell, medical offices in Creve Coeur and Chesterfield, and office portfolios in Clayton and Maryland Heights all run touch-free restrooms that need real maintenance, not just replacement. We keep sensor fixtures working across multi-building portfolios throughout the St. Louis metro on a schedule your facility team sets. Don't see your city below? We work the entire metro and a 2-hour radius from O'Fallon, MO. [View full service area →](https://legacyplumbingmo.com/service-areas) ### St. Charles County - [O'Fallon](https://legacyplumbingmo.com/locations/ofallon) - [St. Charles](https://legacyplumbingmo.com/locations/st-charles) - [St. Peters](https://legacyplumbingmo.com/locations/st-peters) - [Wentzville](https://legacyplumbingmo.com/locations/wentzville) - [Lake Saint Louis](https://legacyplumbingmo.com/service-area/lake-st-louis-mo) - [Dardenne Prairie](https://legacyplumbingmo.com/service-area/dardenne-prairie-mo) - [Cottleville](https://legacyplumbingmo.com/service-area/cottleville-mo) - [Weldon Spring](https://legacyplumbingmo.com/service-area/weldon-spring-mo) - [New Melle](https://legacyplumbingmo.com/service-area/new-melle-mo) - [Foristell](https://legacyplumbingmo.com/service-area/foristell-mo) ### Lincoln County - [Troy](https://legacyplumbingmo.com/service-area/troy-mo) - [Moscow Mills](https://legacyplumbingmo.com/service-area/moscow-mills-mo) - [Elsberry](https://legacyplumbingmo.com/service-area/elsberry-mo) - [Winfield](https://legacyplumbingmo.com/service-area/winfield-mo) - [Old Monroe](https://legacyplumbingmo.com/service-area/old-monroe-mo) - [Hawk Point](https://legacyplumbingmo.com/service-area/hawk-point-mo) - [Silex](https://legacyplumbingmo.com/service-area/silex-mo) ### Warren County - [Warrenton](https://legacyplumbingmo.com/service-area/warrenton-mo) - [Wright City](https://legacyplumbingmo.com/service-area/wright-city-mo) - [Marthasville](https://legacyplumbingmo.com/service-area/marthasville-mo) - [Innsbrook](https://legacyplumbingmo.com/service-area/innsbrook-mo) - [Truesdale](https://legacyplumbingmo.com/service-area/truesdale-mo) ### St. Louis County - [Affton](https://legacyplumbingmo.com/service-area/affton-mo) - [Clayton](https://legacyplumbingmo.com/locations/clayton) - [Ladue](https://legacyplumbingmo.com/service-area/ladue-mo) - [Brentwood](https://legacyplumbingmo.com/service-area/brentwood-mo) - [Chesterfield](https://legacyplumbingmo.com/locations/chesterfield) - [Crestwood](https://legacyplumbingmo.com/service-area/crestwood-mo) - [Des Peres](https://legacyplumbingmo.com/service-area/des-peres-mo) - [Fenton](https://legacyplumbingmo.com/service-area/fenton-mo) - [Lemay](https://legacyplumbingmo.com/service-area/lemay-mo) - [Maplewood](https://legacyplumbingmo.com/service-area/maplewood-mo) ### Jefferson County - [Arnold](https://legacyplumbingmo.com/service-area/arnold-mo) - [Festus](https://legacyplumbingmo.com/service-area/festus-mo) - [Crystal City](https://legacyplumbingmo.com/service-area/crystal-city-mo) - [Herculaneum](https://legacyplumbingmo.com/service-area/herculaneum-mo) - [Pevely](https://legacyplumbingmo.com/service-area/pevely-mo) - [De Soto](https://legacyplumbingmo.com/service-area/de-soto-mo) - [Hillsboro](https://legacyplumbingmo.com/service-area/hillsboro-mo) - [Barnhart](https://legacyplumbingmo.com/service-area/barnhart-mo) - [Imperial](https://legacyplumbingmo.com/service-area/imperial-mo) - [High Ridge](https://legacyplumbingmo.com/service-area/high-ridge-mo) ### St. Louis City - [Central West End](https://legacyplumbingmo.com/service-area/central-west-end-mo) - [Compton Heights](https://legacyplumbingmo.com/service-area/compton-heights-mo) - [Lafayette Square](https://legacyplumbingmo.com/service-area/lafayette-square-mo) - [Soulard](https://legacyplumbingmo.com/service-area/soulard-mo) - [Tower Grove South](https://legacyplumbingmo.com/service-area/tower-grove-south-mo) - [Shaw](https://legacyplumbingmo.com/service-area/shaw-mo) - [Benton Park](https://legacyplumbingmo.com/service-area/benton-park-mo) - [The Hill](https://legacyplumbingmo.com/service-area/the-hill-mo) - [Dogtown](https://legacyplumbingmo.com/service-area/dogtown-mo) - [South City](https://legacyplumbingmo.com/service-area/south-city-st-louis-mo) ## Sensor Fixtures Giving You Work Orders? We'll audit your fixtures and build a service route that stops the calls. [Get Free Estimate](https://legacyplumbingmo.com/contact-us) [636-978-0120](tel:+16369780120) ## Related - [Contact Legacy Plumbing](https://legacyplumbingmo.com/contact-us) - [Company facts](https://legacyplumbingmo.com/company-facts) - [All pages (llms.txt)](https://legacyplumbingmo.com/llms.txt)