Whole house indoor solution with a maximum input rating of 170,000 BTU/hr that will provide a flow rate of up to 7.5 GPM. The Marey 24L Natural Gas Tankless Water Heater features a sleek LED touch screen, bringing cutting-edge technology to your water heating experience. Elevate your control with just a touch. The high-quality pure copper heat exchanger ensures efficient heat transfer and corrosion resistance, while the NSF certification guarantees safe and clean water for your needs. Our CSA certification signifies meticulous testing and approval, ensuring that your tankless water heater surpasses rigorous safety and performance standards. Your assurance of a high- performing, safe, and reliable product.