Noritz’s Residential Combination Boiler allows for simultaneous residential domestic hot water and space heating. The unit’s simultaneous capabilities are easy to control and especially beneficial for applications that do not store or deliver heat energy efficiently. Performing at a 95% AFUE, the unit is EnergyStar-certified. Its 316 L copper primary and secondary heat exchangers have high corrosion resistance, and the unit can adjust to either PP or CPVC venting without the installer needing to make any programming changes. The venting can also easily be reconfigured to use room air.