The CB Series of Combination (Combi) Boilers from Noritz offers a year-round, whole-home solution that utilizes high-efficiency condensing technology to deliver hot water to both plumbing and hydronic heating applications. With 95% AFUE, the Energy Star-qualified appliance can qualify for some state energy rebates. A flow-control valve delivers up to 9.2 gallons per minute of domestic hot water and ensures consistent temperature for the hot water demand, regardless of the incoming water temperature. The CB Series also delivers water for space heating with radiators, baseboards, radiant heating, and air handlers. All of this comes in a compact, wall-hung package weighing just 90 pounds, which allows for space-efficient installation by one installer. Two models are available for different levels of demand. Priced at $3,700.