Rheem 180,000 BTU Indoor High-Efficency Condensing Direct Vent Natural Gas Tankless Water Heater Model RTGH-90DVLN-3

Easy Installation PVC Vent runs up to 60' (2"), 150' (3") The enhanced design is up to 20% smaller and lighter-making one-person installs even easier Ready for Retrofits Industry Best! 1/2" side-to-side clearance allows you to work in spaces the safely competition can't 1/2" Gas line compatibility up to 24 ft (subject to local code) Key Features Rheem® Exclusive! Hot-start Programming™ ensures the unit is in a ready state between back-to-back usage, minimizing any cold water bursts Built-in EcoNet® Wi-Fi technology for direct control from your device (on select models) LeakGuard® – All-inclusive leak detection and prevention system that detects any leak that comes from the unit (on indoor Wi-Fi models)