This gas tankless water heater gives you continuous hot water on demand instead of waiting for a tank to refill. Rated at 100,000 BTU/HR with 4.3-gallon flow capacity, it runs on natural gas at 120V-60Hz and reaches a maximum output temperature of 149°F. Smart sensors hold your set temperature within ±1°F, so showers stay steady instead of swinging hot and cold, and the oxygen-free copper tank speeds up heat transfer while resisting rust over years of daily use. A bright LED touch display shows real-time temperature and status at a glance. Designed for indoor installation with a 1/2 inch NPT connector and a vent outlet for direct venting, it handles flow up to 16 L/min and starts at just 2.5 L/min. Built-in protection against leakage, flameout, dry burning, overheating, timeout, pipe damage, high-temperature lock, wind pressure, and freezing keeps the whole household's hot water supply safe.