Reliance 0 gal 180,000 BTU Propane Tankless Water Heater

This outdoor propane tankless water heater delivers 97% recovery efficiency and a 0.95 UEF, featuring a secondary stainless-steel heat exchanger and condensing technology for significant energy cost savings. It meets California Ultra Low NOx requirements and includes a built-in temperature controller, diagnostics, power cord, and remote control (not waterproof), requiring a 3/4″ gas line and 120V power supply. For proper installation and easier maintenance, a 150 PSI pressure-only relief valve and isolation valve kit must be purchased separately, with remote wiring limited to 400 feet and operation supported up to 6,000 ft altitude.