Noritz NRCP series heaters offer the latest cutting edge technology in tankless water heaters. The NRCP982 is an indoor condensing tankless water heater that can produce up to 11 gallons of hot water per minute. It features and internal pump that provides hot water faster in both recirculating and non-re-circulating applications. This unit is equipped with heavy duty 304 stainless steel heat exchanger for superior thermal transfer as well as excellent resistance to scale formation. Noritz NRCP series heaters can be vented using 2" schedule 40 PVC pipe and operate with as little as 3.5" water column on the incoming gas line.