The NPE-A2 series of Advanced Premium Efficiency Condensing Tankless Water Heaters are amongst the most innovative water heaters on the market. The built-in ComfortFlow recirculation system allows for the continuous flow of hot water, without the "cold-water sandwich effect" that is common amongst other tankless units. Other features include:

• Energy Star certified with up to a 0.95 Uniform Energy Factor
• Low nox emissions (20ppm)
• 2" PVC venting up to 75 feet and 1/2" gas line up to 24 feet saves time and cost of installation
• Field gas convertible units with high-altitude and LP orifice conversion kits included with every unit
• EZNav multi-line control with built-in intuitive software to make startup, operation, and troubleshooting faster and easier
• Durable dual stainless steel heat exchangers for longer life and faster heating
• Built-in recirculation system