The NRC711 Condensing Tankless Unit is sized for smaller, two-bath homes. Available in indoor and outdoor versions, the unit is gas-fired with an Energy Factor of 0.94 for both NG and LP fuels and offers a compact design, scale-detection software, and a built-in digital display. The indoor direct-vent model can be vented with 3-inch PVC or CPVC pipe. Cost is around $1,000. Noritz, 877.773.8556, noritz.com
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