At 24" x 32", AERCO’s SmartPlate EV tankless indirect water heater features a sleek, compact footprint and incorporates simple, easy-to-understand, real-time, load tracking and responsive controls to maintain accurate hot water temperatures under diversified load patterns, AERCO notes. Available in five models with capacities up to 4500 MBH, it provides up to 90 gpm of domestic hot water while increasing overall boiler plant efficiency.